diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTest5.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTest5.java
index 1fff2b6910bc..2bd8bce55ca3 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTest5.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTest5.java
@@ -28,7 +28,6 @@
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.fail;
 
 import java.io.IOException;
 import java.time.Duration;
@@ -59,21 +58,14 @@
 import org.apache.hadoop.hbase.client.Scan.ReadType;
 import org.apache.hadoop.hbase.client.metrics.ScanMetrics;
 import org.apache.hadoop.hbase.filter.BinaryComparator;
-import org.apache.hadoop.hbase.filter.Filter;
 import org.apache.hadoop.hbase.filter.FilterList;
 import org.apache.hadoop.hbase.filter.FirstKeyOnlyFilter;
 import org.apache.hadoop.hbase.filter.InclusiveStopFilter;
-import org.apache.hadoop.hbase.filter.KeyOnlyFilter;
-import org.apache.hadoop.hbase.filter.QualifierFilter;
-import org.apache.hadoop.hbase.filter.RegexStringComparator;
 import org.apache.hadoop.hbase.filter.RowFilter;
-import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
 import org.apache.hadoop.hbase.filter.SubstringComparator;
 import org.apache.hadoop.hbase.filter.ValueFilter;
-import org.apache.hadoop.hbase.io.TimeRange;
 import org.apache.hadoop.hbase.io.hfile.BlockCache;
 import org.apache.hadoop.hbase.io.hfile.CacheConfig;
-import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
 import org.apache.hadoop.hbase.regionserver.HRegion;
 import org.apache.hadoop.hbase.regionserver.HRegionServer;
 import org.apache.hadoop.hbase.regionserver.HStore;
@@ -87,13 +79,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutationProto;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutationProto.MutationType;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MultiRowMutationService;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MutateRowsRequest;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MutateRowsResponse;
-
 /**
  * Run tests that use the HBase clients; {@link Table}. Sets up the HBase mini cluster once at start
  * and runs through all client tests. Each creates a table named for the method and does its stuff
@@ -215,347 +200,6 @@ private Result getReverseScanResult(Table table, byte[] row) throws IOException
     }
   }
 
-  @TestTemplate
-  public void testMultiRowMutation() throws Exception {
-    LOG.info("Starting testMultiRowMutation");
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] ROW3 = Bytes.toBytes("testRow3");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.batch(Arrays.asList(new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE),
-        new Put(ROW2).addColumn(FAMILY, QUALIFIER, Bytes.toBytes(1L)),
-        new Put(ROW3).addColumn(FAMILY, QUALIFIER, VALUE)), new Object[3]);
-
-      // Execute MultiRowMutation
-      Put put = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put);
-
-      Delete delete = new Delete(ROW1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      Increment increment = new Increment(ROW2).addColumn(FAMILY, QUALIFIER, 1L);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.INCREMENT, increment);
-
-      Append append = new Append(ROW3).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m4 = ProtobufUtil.toMutation(MutationType.APPEND, append);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addMutationRequest(m4);
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertTrue(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW1));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW2));
-      assertEquals(2L, Bytes.toLong(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW3));
-      assertEquals(Bytes.toString(VALUE) + Bytes.toString(VALUE),
-        Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-    }
-  }
-
-  @TestTemplate
-  public void testMultiRowMutationWithSingleConditionWhenConditionMatches() throws Exception {
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] VALUE1 = Bytes.toBytes("testValue1");
-    final byte[] VALUE2 = Bytes.toBytes("testValue2");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
-
-      // Execute MultiRowMutation with conditions
-      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
-      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
-      Delete delete = new Delete(ROW2);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addCondition(
-        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2, null));
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertTrue(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW1));
-      assertEquals(Bytes.toString(VALUE1), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW2));
-      assertTrue(r.isEmpty());
-    }
-  }
-
-  @TestTemplate
-  public void testMultiRowMutationWithSingleConditionWhenConditionNotMatch() throws Exception {
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] VALUE1 = Bytes.toBytes("testValue1");
-    final byte[] VALUE2 = Bytes.toBytes("testValue2");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
-
-      // Execute MultiRowMutation with conditions
-      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
-      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
-      Delete delete = new Delete(ROW2);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addCondition(
-        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE1, null));
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertFalse(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW1));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW2));
-      assertEquals(Bytes.toString(VALUE2), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-    }
-  }
-
-  @TestTemplate
-  public void testMultiRowMutationWithMultipleConditionsWhenConditionsMatch() throws Exception {
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] VALUE1 = Bytes.toBytes("testValue1");
-    final byte[] VALUE2 = Bytes.toBytes("testValue2");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
-
-      // Execute MultiRowMutation with conditions
-      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
-      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
-      Delete delete = new Delete(ROW2);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addCondition(
-        ProtobufUtil.toCondition(ROW, FAMILY, QUALIFIER, CompareOperator.EQUAL, null, null));
-      mrmBuilder.addCondition(
-        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2, null));
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertTrue(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW1));
-      assertEquals(Bytes.toString(VALUE1), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW2));
-      assertTrue(r.isEmpty());
-    }
-  }
-
-  @TestTemplate
-  public void testMultiRowMutationWithMultipleConditionsWhenConditionsNotMatch() throws Exception {
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] VALUE1 = Bytes.toBytes("testValue1");
-    final byte[] VALUE2 = Bytes.toBytes("testValue2");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
-
-      // Execute MultiRowMutation with conditions
-      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
-      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
-      Delete delete = new Delete(ROW2);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addCondition(
-        ProtobufUtil.toCondition(ROW1, FAMILY, QUALIFIER, CompareOperator.EQUAL, null, null));
-      mrmBuilder.addCondition(
-        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE1, null));
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertFalse(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW1));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW2));
-      assertEquals(Bytes.toString(VALUE2), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-    }
-  }
-
-  @TestTemplate
-  public void testMultiRowMutationWithFilterConditionWhenConditionMatches() throws Exception {
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] QUALIFIER2 = Bytes.toBytes("testQualifier2");
-    final byte[] VALUE1 = Bytes.toBytes("testValue1");
-    final byte[] VALUE2 = Bytes.toBytes("testValue2");
-    final byte[] VALUE3 = Bytes.toBytes("testValue3");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.put(
-        new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2).addColumn(FAMILY, QUALIFIER2, VALUE3));
-
-      // Execute MultiRowMutation with conditions
-      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
-      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
-      Delete delete = new Delete(ROW2);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addCondition(ProtobufUtil.toCondition(ROW2,
-        new FilterList(
-          new SingleColumnValueFilter(FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2),
-          new SingleColumnValueFilter(FAMILY, QUALIFIER2, CompareOperator.EQUAL, VALUE3)),
-        null));
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertTrue(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW1));
-      assertEquals(Bytes.toString(VALUE1), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-
-      r = t.get(new Get(ROW2));
-      assertTrue(r.isEmpty());
-    }
-  }
-
-  @TestTemplate
-  public void testMultiRowMutationWithFilterConditionWhenConditionNotMatch() throws Exception {
-    final byte[] ROW1 = Bytes.toBytes("testRow1");
-    final byte[] ROW2 = Bytes.toBytes("testRow2");
-    final byte[] QUALIFIER2 = Bytes.toBytes("testQualifier2");
-    final byte[] VALUE1 = Bytes.toBytes("testValue1");
-    final byte[] VALUE2 = Bytes.toBytes("testValue2");
-    final byte[] VALUE3 = Bytes.toBytes("testValue3");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
-      // Add initial data
-      t.put(
-        new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2).addColumn(FAMILY, QUALIFIER2, VALUE3));
-
-      // Execute MultiRowMutation with conditions
-      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
-      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
-      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
-      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
-      Delete delete = new Delete(ROW2);
-      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
-
-      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
-      mrmBuilder.addMutationRequest(m1);
-      mrmBuilder.addMutationRequest(m2);
-      mrmBuilder.addMutationRequest(m3);
-      mrmBuilder.addCondition(ProtobufUtil.toCondition(ROW2,
-        new FilterList(
-          new SingleColumnValueFilter(FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2),
-          new SingleColumnValueFilter(FAMILY, QUALIFIER2, CompareOperator.EQUAL, VALUE2)),
-        null));
-
-      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
-      MultiRowMutationService.BlockingInterface service =
-        MultiRowMutationService.newBlockingStub(channel);
-      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
-
-      // Assert
-      assertFalse(response.getProcessed());
-
-      Result r = t.get(new Get(ROW));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW1));
-      assertTrue(r.isEmpty());
-
-      r = t.get(new Get(ROW2));
-      assertEquals(Bytes.toString(VALUE2), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
-    }
-  }
-
   @TestTemplate
   public void testRowMutations() throws Exception {
     LOG.info("Starting testRowMutations");
@@ -862,305 +506,6 @@ public void testClientPoolThreadLocal() throws IOException {
     }
   }
 
-  @TestTemplate
-  public void testCheckAndPut() throws IOException {
-    final byte[] anotherrow = Bytes.toBytes("anotherrow");
-    final byte[] value2 = Bytes.toBytes("abcd");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      Put put1 = new Put(ROW);
-      put1.addColumn(FAMILY, QUALIFIER, VALUE);
-
-      // row doesn't exist, so using non-null value should be considered "not match".
-      boolean ok =
-        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(VALUE).thenPut(put1);
-      assertFalse(ok);
-
-      // row doesn't exist, so using "ifNotExists" should be considered "match".
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put1);
-      assertTrue(ok);
-
-      // row now exists, so using "ifNotExists" should be considered "not match".
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put1);
-      assertFalse(ok);
-
-      Put put2 = new Put(ROW);
-      put2.addColumn(FAMILY, QUALIFIER, value2);
-
-      // row now exists, use the matching value to check
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(VALUE).thenPut(put2);
-      assertTrue(ok);
-
-      Put put3 = new Put(anotherrow);
-      put3.addColumn(FAMILY, QUALIFIER, VALUE);
-
-      // try to do CheckAndPut on different rows
-      try {
-        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(value2).thenPut(put3);
-        fail("trying to check and modify different rows should have failed.");
-      } catch (Exception ignored) {
-      }
-    }
-  }
-
-  @TestTemplate
-  public void testCheckAndMutateWithTimeRange() throws IOException {
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      final long ts = EnvironmentEdgeManager.currentTime() / 2;
-      Put put = new Put(ROW);
-      put.addColumn(FAMILY, QUALIFIER, ts, VALUE);
-
-      boolean ok =
-        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put);
-      assertTrue(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.at(ts + 10000)).ifEquals(VALUE).thenPut(put);
-      assertFalse(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.from(ts + 10000)).ifEquals(VALUE).thenPut(put);
-      assertFalse(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.between(ts + 10000, ts + 20000)).ifEquals(VALUE).thenPut(put);
-      assertFalse(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.until(ts))
-        .ifEquals(VALUE).thenPut(put);
-      assertFalse(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.at(ts))
-        .ifEquals(VALUE).thenPut(put);
-      assertTrue(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.from(ts))
-        .ifEquals(VALUE).thenPut(put);
-      assertTrue(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.between(ts, ts + 20000)).ifEquals(VALUE).thenPut(put);
-      assertTrue(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.until(ts + 10000)).ifEquals(VALUE).thenPut(put);
-      assertTrue(ok);
-
-      RowMutations rm = new RowMutations(ROW).add((Mutation) put);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.at(ts + 10000)).ifEquals(VALUE).thenMutate(rm);
-      assertFalse(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.at(ts))
-        .ifEquals(VALUE).thenMutate(rm);
-      assertTrue(ok);
-
-      Delete delete = new Delete(ROW).addColumn(FAMILY, QUALIFIER);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .timeRange(TimeRange.at(ts + 10000)).ifEquals(VALUE).thenDelete(delete);
-      assertFalse(ok);
-
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.at(ts))
-        .ifEquals(VALUE).thenDelete(delete);
-      assertTrue(ok);
-    }
-  }
-
-  @TestTemplate
-  public void testCheckAndPutWithCompareOp() throws IOException {
-    final byte[] value1 = Bytes.toBytes("aaaa");
-    final byte[] value2 = Bytes.toBytes("bbbb");
-    final byte[] value3 = Bytes.toBytes("cccc");
-    final byte[] value4 = Bytes.toBytes("dddd");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      Put put2 = new Put(ROW);
-      put2.addColumn(FAMILY, QUALIFIER, value2);
-
-      Put put3 = new Put(ROW);
-      put3.addColumn(FAMILY, QUALIFIER, value3);
-
-      // row doesn't exist, so using "ifNotExists" should be considered "match".
-      boolean ok =
-        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put2);
-      assertTrue(ok);
-
-      // cell = "bbbb", using "aaaa" to compare only LESS/LESS_OR_EQUAL/NOT_EQUAL
-      // turns out "match"
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER, value1).thenPut(put2);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.EQUAL, value1).thenPut(put2);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value1).thenPut(put2);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS, value1).thenPut(put2);
-      assertTrue(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS_OR_EQUAL, value1).thenPut(put2);
-      assertTrue(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.NOT_EQUAL, value1).thenPut(put3);
-      assertTrue(ok);
-
-      // cell = "cccc", using "dddd" to compare only LARGER/LARGER_OR_EQUAL/NOT_EQUAL
-      // turns out "match"
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS, value4).thenPut(put3);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS_OR_EQUAL, value4).thenPut(put3);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.EQUAL, value4).thenPut(put3);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER, value4).thenPut(put3);
-      assertTrue(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value4).thenPut(put3);
-      assertTrue(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.NOT_EQUAL, value4).thenPut(put2);
-      assertTrue(ok);
-
-      // cell = "bbbb", using "bbbb" to compare only GREATER_OR_EQUAL/LESS_OR_EQUAL/EQUAL
-      // turns out "match"
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER, value2).thenPut(put2);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.NOT_EQUAL, value2).thenPut(put2);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS, value2).thenPut(put2);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value2).thenPut(put2);
-      assertTrue(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS_OR_EQUAL, value2).thenPut(put2);
-      assertTrue(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.EQUAL, value2).thenPut(put3);
-      assertTrue(ok);
-    }
-  }
-
-  @TestTemplate
-  public void testCheckAndDelete() throws IOException {
-    final byte[] value1 = Bytes.toBytes("aaaa");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      Put put = new Put(ROW);
-      put.addColumn(FAMILY, QUALIFIER, value1);
-      table.put(put);
-
-      Delete delete = new Delete(ROW);
-      delete.addColumns(FAMILY, QUALIFIER);
-
-      boolean ok =
-        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(value1).thenDelete(delete);
-      assertTrue(ok);
-    }
-  }
-
-  @TestTemplate
-  public void testCheckAndDeleteWithCompareOp() throws IOException {
-    final byte[] value1 = Bytes.toBytes("aaaa");
-    final byte[] value2 = Bytes.toBytes("bbbb");
-    final byte[] value3 = Bytes.toBytes("cccc");
-    final byte[] value4 = Bytes.toBytes("dddd");
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      Put put2 = new Put(ROW);
-      put2.addColumn(FAMILY, QUALIFIER, value2);
-      table.put(put2);
-
-      Put put3 = new Put(ROW);
-      put3.addColumn(FAMILY, QUALIFIER, value3);
-
-      Delete delete = new Delete(ROW);
-      delete.addColumns(FAMILY, QUALIFIER);
-
-      // cell = "bbbb", using "aaaa" to compare only LESS/LESS_OR_EQUAL/NOT_EQUAL
-      // turns out "match"
-      boolean ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER, value1).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.EQUAL, value1).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value1).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS, value1).thenDelete(delete);
-      assertTrue(ok);
-      table.put(put2);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS_OR_EQUAL, value1).thenDelete(delete);
-      assertTrue(ok);
-      table.put(put2);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.NOT_EQUAL, value1).thenDelete(delete);
-      assertTrue(ok);
-
-      // cell = "cccc", using "dddd" to compare only LARGER/LARGER_OR_EQUAL/NOT_EQUAL
-      // turns out "match"
-      table.put(put3);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS, value4).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS_OR_EQUAL, value4).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.EQUAL, value4).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER, value4).thenDelete(delete);
-      assertTrue(ok);
-      table.put(put3);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value4).thenDelete(delete);
-      assertTrue(ok);
-      table.put(put3);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.NOT_EQUAL, value4).thenDelete(delete);
-      assertTrue(ok);
-
-      // cell = "bbbb", using "bbbb" to compare only GREATER_OR_EQUAL/LESS_OR_EQUAL/EQUAL
-      // turns out "match"
-      table.put(put2);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER, value2).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.NOT_EQUAL, value2).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS, value2).thenDelete(delete);
-      assertFalse(ok);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value2).thenDelete(delete);
-      assertTrue(ok);
-      table.put(put2);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.LESS_OR_EQUAL, value2).thenDelete(delete);
-      assertTrue(ok);
-      table.put(put2);
-      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
-        .ifMatches(CompareOperator.EQUAL, value2).thenDelete(delete);
-      assertTrue(ok);
-    }
-  }
-
   /**
    * Test ScanMetrics
    */
@@ -1753,631 +1098,6 @@ public void testSmallScan() throws Exception {
     }
   }
 
-  @TestTemplate
-  public void testSuperSimpleWithReverseScan() throws Exception {
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
-      Put put = new Put(Bytes.toBytes("0-b11111-0000000000000000000"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b11111-0000000000000000002"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b11111-0000000000000000004"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b11111-0000000000000000006"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b11111-0000000000000000008"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b22222-0000000000000000001"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b22222-0000000000000000003"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b22222-0000000000000000005"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b22222-0000000000000000007"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      put = new Put(Bytes.toBytes("0-b22222-0000000000000000009"));
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-      Scan scan = new Scan().withStartRow(Bytes.toBytes("0-b11111-9223372036854775807"))
-        .withStopRow(Bytes.toBytes("0-b11111-0000000000000000000"), true);
-      scan.setReversed(true);
-      try (ResultScanner scanner = ht.getScanner(scan)) {
-        Result result = scanner.next();
-        assertTrue(Bytes.equals(result.getRow(), Bytes.toBytes("0-b11111-0000000000000000008")));
-      }
-    }
-  }
-
-  @TestTemplate
-  public void testFiltersWithReverseScan() throws Exception {
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
-      byte[][] ROWS = makeN(ROW, 10);
-      byte[][] QUALIFIERS =
-        { Bytes.toBytes("col0-<d2v1>-<d3v2>"), Bytes.toBytes("col1-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col2-<d2v1>-<d3v2>"), Bytes.toBytes("col3-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col4-<d2v1>-<d3v2>"), Bytes.toBytes("col5-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col6-<d2v1>-<d3v2>"), Bytes.toBytes("col7-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col8-<d2v1>-<d3v2>"), Bytes.toBytes("col9-<d2v1>-<d3v2>") };
-      for (int i = 0; i < 10; i++) {
-        Put put = new Put(ROWS[i]);
-        put.addColumn(FAMILY, QUALIFIERS[i], VALUE);
-        ht.put(put);
-      }
-      Scan scan = new Scan();
-      scan.setReversed(true);
-      scan.addFamily(FAMILY);
-      Filter filter =
-        new QualifierFilter(CompareOperator.EQUAL, new RegexStringComparator("col[1-5]"));
-      scan.setFilter(filter);
-      try (ResultScanner scanner = ht.getScanner(scan)) {
-        int expectedIndex = 5;
-        for (Result result : scanner) {
-          assertEquals(1, result.size());
-          Cell c = result.rawCells()[0];
-          assertTrue(Bytes.equals(c.getRowArray(), c.getRowOffset(), c.getRowLength(),
-            ROWS[expectedIndex], 0, ROWS[expectedIndex].length));
-          assertTrue(
-            Bytes.equals(c.getQualifierArray(), c.getQualifierOffset(), c.getQualifierLength(),
-              QUALIFIERS[expectedIndex], 0, QUALIFIERS[expectedIndex].length));
-          expectedIndex--;
-        }
-        assertEquals(0, expectedIndex);
-      }
-    }
-  }
-
-  @TestTemplate
-  public void testKeyOnlyFilterWithReverseScan() throws Exception {
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
-      byte[][] ROWS = makeN(ROW, 10);
-      byte[][] QUALIFIERS =
-        { Bytes.toBytes("col0-<d2v1>-<d3v2>"), Bytes.toBytes("col1-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col2-<d2v1>-<d3v2>"), Bytes.toBytes("col3-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col4-<d2v1>-<d3v2>"), Bytes.toBytes("col5-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col6-<d2v1>-<d3v2>"), Bytes.toBytes("col7-<d2v1>-<d3v2>"),
-          Bytes.toBytes("col8-<d2v1>-<d3v2>"), Bytes.toBytes("col9-<d2v1>-<d3v2>") };
-      for (int i = 0; i < 10; i++) {
-        Put put = new Put(ROWS[i]);
-        put.addColumn(FAMILY, QUALIFIERS[i], VALUE);
-        ht.put(put);
-      }
-      Scan scan = new Scan();
-      scan.setReversed(true);
-      scan.addFamily(FAMILY);
-      Filter filter = new KeyOnlyFilter(true);
-      scan.setFilter(filter);
-      try (ResultScanner ignored = ht.getScanner(scan)) {
-        int count = 0;
-        for (Result result : ht.getScanner(scan)) {
-          assertEquals(1, result.size());
-          assertEquals(Bytes.SIZEOF_INT, result.rawCells()[0].getValueLength());
-          assertEquals(VALUE.length, Bytes.toInt(CellUtil.cloneValue(result.rawCells()[0])));
-          count++;
-        }
-        assertEquals(10, count);
-      }
-    }
-  }
-
-  /**
-   * Test simple table and non-existent row cases.
-   */
-  @TestTemplate
-  public void testSimpleMissingWithReverseScan() throws Exception {
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
-      byte[][] ROWS = makeN(ROW, 4);
-
-      // Try to get a row on an empty table
-      Scan scan = new Scan();
-      scan.setReversed(true);
-      Result result = getSingleScanResult(ht, scan);
-      assertNullResult(result);
-
-      scan = new Scan().withStartRow(ROWS[0]);
-      scan.setReversed(true);
-      result = getSingleScanResult(ht, scan);
-      assertNullResult(result);
-
-      scan = new Scan().withStartRow(ROWS[0]).withStopRow(ROWS[1], true);
-      scan.setReversed(true);
-      result = getSingleScanResult(ht, scan);
-      assertNullResult(result);
-
-      scan = new Scan();
-      scan.setReversed(true);
-      scan.addFamily(FAMILY);
-      result = getSingleScanResult(ht, scan);
-      assertNullResult(result);
-
-      scan = new Scan();
-      scan.setReversed(true);
-      scan.addColumn(FAMILY, QUALIFIER);
-      result = getSingleScanResult(ht, scan);
-      assertNullResult(result);
-
-      // Insert a row
-      Put put = new Put(ROWS[2]);
-      put.addColumn(FAMILY, QUALIFIER, VALUE);
-      ht.put(put);
-
-      // Make sure we can scan the row
-      scan = new Scan();
-      scan.setReversed(true);
-      result = getSingleScanResult(ht, scan);
-      assertSingleResult(result, ROWS[2], FAMILY, QUALIFIER, VALUE);
-
-      scan = new Scan().withStartRow(ROWS[3]).withStopRow(ROWS[0], true);
-      scan.setReversed(true);
-      result = getSingleScanResult(ht, scan);
-      assertSingleResult(result, ROWS[2], FAMILY, QUALIFIER, VALUE);
-
-      scan = new Scan().withStartRow(ROWS[2]).withStopRow(ROWS[1], true);
-      scan.setReversed(true);
-      result = getSingleScanResult(ht, scan);
-      assertSingleResult(result, ROWS[2], FAMILY, QUALIFIER, VALUE);
-
-      // Try to scan empty rows around it
-      // Introduced MemStore#shouldSeekForReverseScan to fix the following
-      scan = new Scan().withStartRow(ROWS[1]);
-      scan.setReversed(true);
-      result = getSingleScanResult(ht, scan);
-      assertNullResult(result);
-    }
-  }
-
-  @TestTemplate
-  public void testNullWithReverseScan() throws Exception {
-    TEST_UTIL.createTable(tableName, FAMILY);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
-      // Null qualifier (should work)
-      Put put = new Put(ROW);
-      put.addColumn(FAMILY, null, VALUE);
-      ht.put(put);
-      scanTestNull(ht, ROW, FAMILY, VALUE, true);
-      Delete delete = new Delete(ROW);
-      delete.addColumns(FAMILY, null);
-      ht.delete(delete);
-    }
-
-    // Use a new table
-    TableName newTableName = TableName.valueOf(tableName.toString() + "2");
-    TEST_UTIL.createTable(newTableName, FAMILY);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(newTableName)) {
-      // Empty qualifier, byte[0] instead of null (should work)
-      Put put = new Put(ROW);
-      put.addColumn(FAMILY, HConstants.EMPTY_BYTE_ARRAY, VALUE);
-      ht.put(put);
-      scanTestNull(ht, ROW, FAMILY, VALUE, true);
-      TEST_UTIL.flush();
-      scanTestNull(ht, ROW, FAMILY, VALUE, true);
-      Delete delete = new Delete(ROW);
-      delete.addColumns(FAMILY, HConstants.EMPTY_BYTE_ARRAY);
-      ht.delete(delete);
-      // Null value
-      put = new Put(ROW);
-      put.addColumn(FAMILY, QUALIFIER, null);
-      ht.put(put);
-      Scan scan = new Scan();
-      scan.setReversed(true);
-      scan.addColumn(FAMILY, QUALIFIER);
-      Result result = getSingleScanResult(ht, scan);
-      assertSingleResult(result, ROW, FAMILY, QUALIFIER, null);
-    }
-  }
-
-  @TestTemplate
-  @SuppressWarnings("checkstyle:MethodLength")
-  public void testDeletesWithReverseScan() throws Exception {
-    byte[][] ROWS = makeNAscii(ROW, 6);
-    byte[][] FAMILIES = makeNAscii(FAMILY, 3);
-    byte[][] VALUES = makeN(VALUE, 5);
-    long[] ts = { 1000, 2000, 3000, 4000, 5000 };
-    TEST_UTIL.createTable(tableName, FAMILIES, 3);
-    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
-      Put put = new Put(ROW);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[0], VALUES[0]);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[1], VALUES[1]);
-      ht.put(put);
-
-      Delete delete = new Delete(ROW);
-      delete.addFamily(FAMILIES[0], ts[0]);
-      ht.delete(delete);
-
-      Scan scan = new Scan().withStartRow(ROW);
-      scan.setReversed(true);
-      scan.addFamily(FAMILIES[0]);
-      scan.readVersions(Integer.MAX_VALUE);
-      Result result = getSingleScanResult(ht, scan);
-      assertNResult(result, ROW, FAMILIES[0], QUALIFIER, new long[] { ts[1] },
-        new byte[][] { VALUES[1] }, 0, 0);
-
-      // Test delete latest version
-      put = new Put(ROW);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[4], VALUES[4]);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[2], VALUES[2]);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[3], VALUES[3]);
-      put.addColumn(FAMILIES[0], null, ts[4], VALUES[4]);
-      put.addColumn(FAMILIES[0], null, ts[2], VALUES[2]);
-      put.addColumn(FAMILIES[0], null, ts[3], VALUES[3]);
-      ht.put(put);
-
-      delete = new Delete(ROW);
-      delete.addColumn(FAMILIES[0], QUALIFIER); // ts[4]
-      ht.delete(delete);
-
-      scan = new Scan().withStartRow(ROW);
-      scan.setReversed(true);
-      scan.addColumn(FAMILIES[0], QUALIFIER);
-      scan.readVersions(Integer.MAX_VALUE);
-      result = getSingleScanResult(ht, scan);
-      assertNResult(result, ROW, FAMILIES[0], QUALIFIER, new long[] { ts[1], ts[2], ts[3] },
-        new byte[][] { VALUES[1], VALUES[2], VALUES[3] }, 0, 2);
-
-      // Test for HBASE-1847
-      delete = new Delete(ROW);
-      delete.addColumn(FAMILIES[0], null);
-      ht.delete(delete);
-
-      // Cleanup null qualifier
-      delete = new Delete(ROW);
-      delete.addColumns(FAMILIES[0], null);
-      ht.delete(delete);
-
-      // Expected client behavior might be that you can re-put deleted values
-      // But alas, this is not to be. We can't put them back in either case.
-
-      put = new Put(ROW);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[0], VALUES[0]);
-      put.addColumn(FAMILIES[0], QUALIFIER, ts[4], VALUES[4]);
-      ht.put(put);
-
-      // The Scanner returns the previous values, the expected-naive-unexpected
-      // behavior
-
-      scan = new Scan().withStartRow(ROW);
-      scan.setReversed(true);
-      scan.addFamily(FAMILIES[0]);
-      scan.readVersions(Integer.MAX_VALUE);
-      result = getSingleScanResult(ht, scan);
-      assertNResult(result, ROW, FAMILIES[0], QUALIFIER, new long[] { ts[1], ts[2], ts[3] },
-        new byte[][] { VALUES[1], VALUES[2], VALUES[3] }, 0, 2);
-
-      // Test deleting an entire family from one row but not the other various
-      // ways
-
-      put = new Put(ROWS[0]);
-      put.addColumn(FAMILIES[1], QUALIFIER, ts[0], VALUES[0]);
-      put.addColumn(FAMILIES[1], QUALIFIER, ts[1], VALUES[1]);
-      put.addColumn(FAMILIES[2], QUALIFIER, ts[2], VALUES[2]);
-      put.addColumn(FAMILIES[2], QUALIFIER, ts[3], VALUES[3]);
-      ht.put(put);
-
-      put = new Put(ROWS[1]);
-      put.addColumn(FAMILIES[1], QUALIFIER, ts[0], VALUES[0]);
-      put.addColumn(FAMILIES[1], QUALIFIER, ts[1], VALUES[1]);
-      put.addColumn(FAMILIES[2], QUALIFIER, ts[2], VALUES[2]);
-      put.addColumn(FAMILIES[2], QUALIFIER, ts[3], VALUES[3]);
-      ht.put(put);
-
-      put = new Put(ROWS[2]);
-      put.addColumn(FAMILIES[1], QUALIFIER, ts[0], VALUES[0]);
-      put.addColumn(FAMILIES[1], QUALIFIER, ts[1], VALUES[1]);
-      put.addColumn(FAMILIES[2], QUALIFIER, ts[2], VALUES[2]);
-      put.addColumn(FAMILIES[2], QUALIFIER, ts[3], VALUES[3]);
-      ht.put(put);
-
-      delete = new Delete(ROWS[0]);
-      delete.addFamily(FAMILIES[2]);
-      ht.delete(delete);
-
-      delete = new Delete(ROWS[1]);
-      delete.addColumns(FAMILIES[1], QUALIFIER);
-      ht.delete(delete);
-
-      delete = new Delete(ROWS[2]);
-      delete.addColumn(FAMILIES[1], QUALIFIER);
-      delete.addColumn(FAMILIES[1], QUALIFIER);
-      delete.addColumn(FAMILIES[2], QUALIFIER);
-      ht.delete(delete);
-
-      scan = new Scan().withStartRow(ROWS[0]);
-      scan.setReversed(true);
-      scan.addFamily(FAMILIES[1]);
-      scan.addFamily(FAMILIES[2]);
-      scan.readVersions(Integer.MAX_VALUE);
-      result = getSingleScanResult(ht, scan);
-      assertEquals(2, result.size(), "Expected 2 keys but received " + result.size());
-      assertNResult(result, ROWS[0], FAMILIES[1], QUALIFIER, new long[] { ts[0], ts[1] },
-        new byte[][] { VALUES[0], VALUES[1] }, 0, 1);
-
-      scan = new Scan().withStartRow(ROWS[1]);
-      scan.setReversed(true);
-      scan.addFamily(FAMILIES[1]);
-      scan.addFamily(FAMILIES[2]);
-      scan.readVersions(Integer.MAX_VALUE);
-      result = getSingleScanResult(ht, scan);
-      assertEquals(2, result.size(), "Expected 2 keys but received " + result.size());
-
-      scan = new Scan().withStartRow(ROWS[2]);
-      scan.setReversed(true);
-      scan.addFamily(FAMILIES[1]);
-      scan.addFamily(FAMILIES[2]);
-      scan.readVersions(Integer.MAX_VALUE);
-      result = getSingleScanResult(ht, scan);
-      assertEquals(1, result.size());
-      assertNResult(result, ROWS[2], FAMILIES[2], QUALIFIER, new long[] { ts[2] },
-        new byte[][] { VALUES[2] }, 0, 0);
-
-      // Test if we delete the family first in one row (HBASE-1541)
-
-      delete = new Delete(ROWS[3]);
-      delete.addFamily(FAMILIES[1]);
-      ht.delete(delete);
-
-      put = new Put(ROWS[3]);
-      put.addColumn(FAMILIES[2], QUALIFIER, VALUES[0]);
-      ht.put(put);
-
-      put = new Put(ROWS[4]);
-      put.addColumn(FAMILIES[1], QUALIFIER, VALUES[1]);
-      put.addColumn(FAMILIES[2], QUALIFIER, VALUES[2]);
-      ht.put(put);
-
-      scan = new Scan().withStartRow(ROWS[4]);
-      scan.setReversed(true);
-      scan.addFamily(FAMILIES[1]);
-      scan.addFamily(FAMILIES[2]);
-      scan.readVersions(Integer.MAX_VALUE);
-      try (ResultScanner scanner = ht.getScanner(scan)) {
-        result = scanner.next();
-        assertEquals(2, result.size(), "Expected 2 keys but received " + result.size());
-        assertTrue(Bytes.equals(CellUtil.cloneRow(result.rawCells()[0]), ROWS[4]));
-        assertTrue(Bytes.equals(CellUtil.cloneRow(result.rawCells()[1]), ROWS[4]));
-        assertTrue(Bytes.equals(CellUtil.cloneValue(result.rawCells()[0]), VALUES[1]));
-        assertTrue(Bytes.equals(CellUtil.cloneValue(result.rawCells()[1]), VALUES[2]));
-        result = scanner.next();
-        assertEquals(1, result.size(), "Expected 1 key but received " + result.size());
-        assertTrue(Bytes.equals(CellUtil.cloneRow(result.rawCells()[0]), ROWS[3]));
-        assertTrue(Bytes.equals(CellUtil.cloneValue(result.rawCells()[0]), VALUES[0]));
-      }
-    }
-  }
-
-  /**
-   * Tests reversed scan under multi regions
-   */
-  @TestTemplate
-  public void testReversedScanUnderMultiRegions() throws Exception {
-    // Test Initialization.
-    byte[] maxByteArray = ConnectionUtils.MAX_BYTE_ARRAY;
-    byte[][] splitRows = new byte[][] { Bytes.toBytes("005"),
-      Bytes.add(Bytes.toBytes("005"), Bytes.multiple(maxByteArray, 16)), Bytes.toBytes("006"),
-      Bytes.add(Bytes.toBytes("006"), Bytes.multiple(maxByteArray, 8)), Bytes.toBytes("007"),
-      Bytes.add(Bytes.toBytes("007"), Bytes.multiple(maxByteArray, 4)), Bytes.toBytes("008"),
-      Bytes.multiple(maxByteArray, 2) };
-    TEST_UTIL.createTable(tableName, FAMILY, splitRows);
-    TEST_UTIL.waitUntilAllRegionsAssigned(tableName);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      try (RegionLocator l = conn.getRegionLocator(tableName)) {
-        assertEquals(splitRows.length + 1, l.getAllRegionLocations().size());
-      }
-      // Insert one row each region
-      int insertNum = splitRows.length;
-      for (byte[] splitRow : splitRows) {
-        Put put = new Put(splitRow);
-        put.addColumn(FAMILY, QUALIFIER, VALUE);
-        table.put(put);
-      }
-
-      // scan forward
-      try (ResultScanner scanner = table.getScanner(new Scan())) {
-        int count = 0;
-        for (Result r : scanner) {
-          assertFalse(r.isEmpty());
-          count++;
-        }
-        assertEquals(insertNum, count);
-      }
-
-      // scan backward
-      Scan scan = new Scan();
-      scan.setReversed(true);
-      try (ResultScanner scanner = table.getScanner(scan)) {
-        int count = 0;
-        byte[] lastRow = null;
-        for (Result r : scanner) {
-          assertFalse(r.isEmpty());
-          count++;
-          byte[] thisRow = r.getRow();
-          if (lastRow != null) {
-            assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-              + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-          }
-          lastRow = thisRow;
-        }
-        assertEquals(insertNum, count);
-      }
-    }
-  }
-
-  /**
-   * Tests reversed scan under multi regions
-   */
-  @TestTemplate
-  public void testSmallReversedScanUnderMultiRegions() throws Exception {
-    // Test Initialization.
-    byte[][] splitRows = new byte[][] { Bytes.toBytes("000"), Bytes.toBytes("002"),
-      Bytes.toBytes("004"), Bytes.toBytes("006"), Bytes.toBytes("008"), Bytes.toBytes("010") };
-    TEST_UTIL.createTable(tableName, FAMILY, splitRows);
-    TEST_UTIL.waitUntilAllRegionsAssigned(tableName);
-    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
-      try (RegionLocator l = conn.getRegionLocator(tableName)) {
-        assertEquals(splitRows.length + 1, l.getAllRegionLocations().size());
-      }
-      for (byte[] splitRow : splitRows) {
-        Put put = new Put(splitRow);
-        put.addColumn(FAMILY, QUALIFIER, VALUE);
-        table.put(put);
-
-        byte[] nextRow = Bytes.copy(splitRow);
-        nextRow[nextRow.length - 1]++;
-
-        put = new Put(nextRow);
-        put.addColumn(FAMILY, QUALIFIER, VALUE);
-        table.put(put);
-      }
-
-      // scan forward
-      try (ResultScanner scanner = table.getScanner(new Scan())) {
-        int count = 0;
-        for (Result r : scanner) {
-          assertTrue(!r.isEmpty());
-          count++;
-        }
-        assertEquals(12, count);
-      }
-
-      reverseScanTest(table, ReadType.STREAM);
-      reverseScanTest(table, ReadType.PREAD);
-      reverseScanTest(table, ReadType.DEFAULT);
-    }
-  }
-
-  private void reverseScanTest(Table table, ReadType readType) throws IOException {
-    // scan backward
-    Scan scan = new Scan();
-    scan.setReversed(true);
-    try (ResultScanner scanner = table.getScanner(scan)) {
-      int count = 0;
-      byte[] lastRow = null;
-      for (Result r : scanner) {
-        assertTrue(!r.isEmpty());
-        count++;
-        byte[] thisRow = r.getRow();
-        if (lastRow != null) {
-          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-        }
-        lastRow = thisRow;
-      }
-      assertEquals(12, count);
-    }
-
-    scan = new Scan();
-    scan.setReadType(readType);
-    scan.setReversed(true);
-    scan.withStartRow(Bytes.toBytes("002"));
-    try (ResultScanner scanner = table.getScanner(scan)) {
-      int count = 0;
-      byte[] lastRow = null;
-      for (Result r : scanner) {
-        assertTrue(!r.isEmpty());
-        count++;
-        byte[] thisRow = r.getRow();
-        if (lastRow != null) {
-          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-        }
-        lastRow = thisRow;
-      }
-      assertEquals(3, count); // 000 001 002
-    }
-
-    scan = new Scan();
-    scan.setReadType(readType);
-    scan.setReversed(true);
-    scan.withStartRow(Bytes.toBytes("002"));
-    scan.withStopRow(Bytes.toBytes("000"));
-    try (ResultScanner scanner = table.getScanner(scan)) {
-      int count = 0;
-      byte[] lastRow = null;
-      for (Result r : scanner) {
-        assertFalse(r.isEmpty());
-        count++;
-        byte[] thisRow = r.getRow();
-        if (lastRow != null) {
-          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-        }
-        lastRow = thisRow;
-      }
-      assertEquals(2, count); // 001 002
-    }
-
-    scan = new Scan();
-    scan.setReadType(readType);
-    scan.setReversed(true);
-    scan.withStartRow(Bytes.toBytes("001"));
-    try (ResultScanner scanner = table.getScanner(scan)) {
-      int count = 0;
-      byte[] lastRow = null;
-      for (Result r : scanner) {
-        assertFalse(r.isEmpty());
-        count++;
-        byte[] thisRow = r.getRow();
-        if (lastRow != null) {
-          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-        }
-        lastRow = thisRow;
-      }
-      assertEquals(2, count); // 000 001
-    }
-
-    scan = new Scan();
-    scan.setReadType(readType);
-    scan.setReversed(true);
-    scan.withStartRow(Bytes.toBytes("000"));
-    try (ResultScanner scanner = table.getScanner(scan)) {
-      int count = 0;
-      byte[] lastRow = null;
-      for (Result r : scanner) {
-        assertFalse(r.isEmpty());
-        count++;
-        byte[] thisRow = r.getRow();
-        if (lastRow != null) {
-          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-        }
-        lastRow = thisRow;
-      }
-      assertEquals(1, count); // 000
-    }
-
-    scan = new Scan();
-    scan.setReadType(readType);
-    scan.setReversed(true);
-    scan.withStartRow(Bytes.toBytes("006"));
-    scan.withStopRow(Bytes.toBytes("002"));
-    try (ResultScanner scanner = table.getScanner(scan)) {
-      int count = 0;
-      byte[] lastRow = null;
-      for (Result r : scanner) {
-        assertFalse(r.isEmpty());
-        count++;
-        byte[] thisRow = r.getRow();
-        if (lastRow != null) {
-          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
-            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
-        }
-        lastRow = thisRow;
-      }
-      assertEquals(4, count); // 003 004 005 006
-    }
-  }
-
   @TestTemplate
   public void testFilterAllRecords() throws IOException {
     Scan scan = new Scan();
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestBase.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestBase.java
index a7f9ce7e6657..a347a045e0fe 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestBase.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestBase.java
@@ -18,9 +18,9 @@
 package org.apache.hadoop.hbase.client;
 
 import static org.apache.hadoop.hbase.HBaseTestingUtil.countRows;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.IOException;
 import java.util.Arrays;
@@ -146,7 +146,7 @@ protected void deleteColumns(Table ht, String value, String keyPrefix) throws IO
       ht.delete(delete);
       count++;
     }
-    assertEquals("Did not perform correct number of deletes", 3, count);
+    assertEquals(3, count, "Did not perform correct number of deletes");
   }
 
   protected int getNumberOfRows(String keyPrefix, String value, Table ht) throws Exception {
@@ -332,47 +332,42 @@ protected static boolean equals(byte[] left, byte[] right) {
   }
 
   protected void assertKey(Cell key, byte[] row, byte[] family, byte[] qualifier, byte[] value) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(CellUtil.cloneRow(key)) + "]", equals(row, CellUtil.cloneRow(key)));
-    assertTrue(
+    assertTrue(equals(row, CellUtil.cloneRow(key)), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(CellUtil.cloneRow(key)) + "]");
+    assertTrue(equals(family, CellUtil.cloneFamily(key)),
       "Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-        + Bytes.toString(CellUtil.cloneFamily(key)) + "]",
-      equals(family, CellUtil.cloneFamily(key)));
-    assertTrue(
+        + Bytes.toString(CellUtil.cloneFamily(key)) + "]");
+    assertTrue(equals(qualifier, CellUtil.cloneQualifier(key)),
       "Expected qualifier [" + Bytes.toString(qualifier) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(key)) + "]",
-      equals(qualifier, CellUtil.cloneQualifier(key)));
-    assertTrue("Expected value [" + Bytes.toString(value) + "] " + "Got value ["
-      + Bytes.toString(CellUtil.cloneValue(key)) + "]", equals(value, CellUtil.cloneValue(key)));
+        + Bytes.toString(CellUtil.cloneQualifier(key)) + "]");
+    assertTrue(equals(value, CellUtil.cloneValue(key)), "Expected value [" + Bytes.toString(value)
+      + "] " + "Got value [" + Bytes.toString(CellUtil.cloneValue(key)) + "]");
   }
 
   static void assertIncrementKey(Cell key, byte[] row, byte[] family, byte[] qualifier,
     long value) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(CellUtil.cloneRow(key)) + "]", equals(row, CellUtil.cloneRow(key)));
-    assertTrue(
+    assertTrue(equals(row, CellUtil.cloneRow(key)), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(CellUtil.cloneRow(key)) + "]");
+    assertTrue(equals(family, CellUtil.cloneFamily(key)),
       "Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-        + Bytes.toString(CellUtil.cloneFamily(key)) + "]",
-      equals(family, CellUtil.cloneFamily(key)));
-    assertTrue(
+        + Bytes.toString(CellUtil.cloneFamily(key)) + "]");
+    assertTrue(equals(qualifier, CellUtil.cloneQualifier(key)),
       "Expected qualifier [" + Bytes.toString(qualifier) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(key)) + "]",
-      equals(qualifier, CellUtil.cloneQualifier(key)));
-    assertEquals("Expected value [" + value + "] " + "Got value ["
-      + Bytes.toLong(CellUtil.cloneValue(key)) + "]", Bytes.toLong(CellUtil.cloneValue(key)),
-      value);
+        + Bytes.toString(CellUtil.cloneQualifier(key)) + "]");
+    assertEquals(Bytes.toLong(CellUtil.cloneValue(key)), value, "Expected value [" + value + "] "
+      + "Got value [" + Bytes.toLong(CellUtil.cloneValue(key)) + "]");
   }
 
   protected void assertNumKeys(Result result, int n) throws Exception {
-    assertEquals("Expected " + n + " keys but got " + result.size(), result.size(), n);
+    assertEquals(result.size(), n, "Expected " + n + " keys but got " + result.size());
   }
 
   protected void assertNResult(Result result, byte[] row, byte[][] families, byte[][] qualifiers,
     byte[][] values, int[][] idxs) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(result.getRow()) + "]", equals(row, result.getRow()));
-    assertEquals("Expected " + idxs.length + " keys but result contains " + result.size(),
-      result.size(), idxs.length);
+    assertTrue(equals(row, result.getRow()), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(result.getRow()) + "]");
+    assertEquals(result.size(), idxs.length,
+      "Expected " + idxs.length + " keys but result contains " + result.size());
 
     Cell[] keys = result.rawCells();
 
@@ -385,19 +380,19 @@ protected void assertNResult(Result result, byte[] row, byte[][] families, byte[
       byte[] famb = CellUtil.cloneFamily(key);
       byte[] qualb = CellUtil.cloneQualifier(key);
       byte[] valb = CellUtil.cloneValue(key);
-      assertTrue("(" + i + ") Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-        + Bytes.toString(famb) + "]", equals(family, famb));
-      assertTrue("(" + i + ") Expected qualifier [" + Bytes.toString(qualifier) + "] "
-        + "Got qualifier [" + Bytes.toString(qualb) + "]", equals(qualifier, qualb));
-      assertTrue("(" + i + ") Expected value [" + Bytes.toString(value) + "] " + "Got value ["
-        + Bytes.toString(valb) + "]", equals(value, valb));
+      assertTrue(equals(family, famb), "(" + i + ") Expected family [" + Bytes.toString(family)
+        + "] " + "Got family [" + Bytes.toString(famb) + "]");
+      assertTrue(equals(qualifier, qualb), "(" + i + ") Expected qualifier ["
+        + Bytes.toString(qualifier) + "] " + "Got qualifier [" + Bytes.toString(qualb) + "]");
+      assertTrue(equals(value, valb), "(" + i + ") Expected value [" + Bytes.toString(value) + "] "
+        + "Got value [" + Bytes.toString(valb) + "]");
     }
   }
 
   protected void assertNResult(Result result, byte[] row, byte[] family, byte[] qualifier,
     long[] stamps, byte[][] values, int start, int end) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(result.getRow()) + "]", equals(row, result.getRow()));
+    assertTrue(equals(row, result.getRow()), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(result.getRow()) + "]");
     int expectedResults = end - start + 1;
     assertEquals(expectedResults, result.size());
 
@@ -408,16 +403,17 @@ protected void assertNResult(Result result, byte[] row, byte[] family, byte[] qu
       long ts = stamps[end - i];
       Cell key = keys[i];
 
-      assertTrue("(" + i + ") Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-        + Bytes.toString(CellUtil.cloneFamily(key)) + "]", CellUtil.matchingFamily(key, family));
-      assertTrue(
+      assertTrue(CellUtil.matchingFamily(key, family),
+        "(" + i + ") Expected family [" + Bytes.toString(family) + "] " + "Got family ["
+          + Bytes.toString(CellUtil.cloneFamily(key)) + "]");
+      assertTrue(CellUtil.matchingQualifier(key, qualifier),
         "(" + i + ") Expected qualifier [" + Bytes.toString(qualifier) + "] " + "Got qualifier ["
-          + Bytes.toString(CellUtil.cloneQualifier(key)) + "]",
-        CellUtil.matchingQualifier(key, qualifier));
-      assertEquals("Expected ts [" + ts + "] " + "Got ts [" + key.getTimestamp() + "]", ts,
-        key.getTimestamp());
-      assertTrue("(" + i + ") Expected value [" + Bytes.toString(value) + "] " + "Got value ["
-        + Bytes.toString(CellUtil.cloneValue(key)) + "]", CellUtil.matchingValue(key, value));
+          + Bytes.toString(CellUtil.cloneQualifier(key)) + "]");
+      assertEquals(ts, key.getTimestamp(),
+        "Expected ts [" + ts + "] " + "Got ts [" + key.getTimestamp() + "]");
+      assertTrue(CellUtil.matchingValue(key, value),
+        "(" + i + ") Expected value [" + Bytes.toString(value) + "] " + "Got value ["
+          + Bytes.toString(CellUtil.cloneValue(key)) + "]");
     }
   }
 
@@ -427,91 +423,89 @@ protected void assertNResult(Result result, byte[] row, byte[] family, byte[] qu
    */
   protected void assertDoubleResult(Result result, byte[] row, byte[] familyA, byte[] qualifierA,
     byte[] valueA, byte[] familyB, byte[] qualifierB, byte[] valueB) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(result.getRow()) + "]", equals(row, result.getRow()));
-    assertEquals("Expected two keys but result contains " + result.size(), 2, result.size());
+    assertTrue(equals(row, result.getRow()), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(result.getRow()) + "]");
+    assertEquals(2, result.size(), "Expected two keys but result contains " + result.size());
     Cell[] kv = result.rawCells();
     Cell kvA = kv[0];
-    assertTrue(
+    assertTrue(equals(familyA, CellUtil.cloneFamily(kvA)),
       "(A) Expected family [" + Bytes.toString(familyA) + "] " + "Got family ["
-        + Bytes.toString(CellUtil.cloneFamily(kvA)) + "]",
-      equals(familyA, CellUtil.cloneFamily(kvA)));
-    assertTrue(
+        + Bytes.toString(CellUtil.cloneFamily(kvA)) + "]");
+    assertTrue(equals(qualifierA, CellUtil.cloneQualifier(kvA)),
       "(A) Expected qualifier [" + Bytes.toString(qualifierA) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(kvA)) + "]",
-      equals(qualifierA, CellUtil.cloneQualifier(kvA)));
-    assertTrue("(A) Expected value [" + Bytes.toString(valueA) + "] " + "Got value ["
-      + Bytes.toString(CellUtil.cloneValue(kvA)) + "]", equals(valueA, CellUtil.cloneValue(kvA)));
+        + Bytes.toString(CellUtil.cloneQualifier(kvA)) + "]");
+    assertTrue(equals(valueA, CellUtil.cloneValue(kvA)),
+      "(A) Expected value [" + Bytes.toString(valueA) + "] " + "Got value ["
+        + Bytes.toString(CellUtil.cloneValue(kvA)) + "]");
     Cell kvB = kv[1];
-    assertTrue(
+    assertTrue(equals(familyB, CellUtil.cloneFamily(kvB)),
       "(B) Expected family [" + Bytes.toString(familyB) + "] " + "Got family ["
-        + Bytes.toString(CellUtil.cloneFamily(kvB)) + "]",
-      equals(familyB, CellUtil.cloneFamily(kvB)));
-    assertTrue(
+        + Bytes.toString(CellUtil.cloneFamily(kvB)) + "]");
+    assertTrue(equals(qualifierB, CellUtil.cloneQualifier(kvB)),
       "(B) Expected qualifier [" + Bytes.toString(qualifierB) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(kvB)) + "]",
-      equals(qualifierB, CellUtil.cloneQualifier(kvB)));
-    assertTrue("(B) Expected value [" + Bytes.toString(valueB) + "] " + "Got value ["
-      + Bytes.toString(CellUtil.cloneValue(kvB)) + "]", equals(valueB, CellUtil.cloneValue(kvB)));
+        + Bytes.toString(CellUtil.cloneQualifier(kvB)) + "]");
+    assertTrue(equals(valueB, CellUtil.cloneValue(kvB)),
+      "(B) Expected value [" + Bytes.toString(valueB) + "] " + "Got value ["
+        + Bytes.toString(CellUtil.cloneValue(kvB)) + "]");
   }
 
   protected void assertSingleResult(Result result, byte[] row, byte[] family, byte[] qualifier,
     byte[] value) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(result.getRow()) + "]", equals(row, result.getRow()));
-    assertEquals("Expected a single key but result contains " + result.size(), 1, result.size());
+    assertTrue(equals(row, result.getRow()), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(result.getRow()) + "]");
+    assertEquals(1, result.size(), "Expected a single key but result contains " + result.size());
     Cell kv = result.rawCells()[0];
-    assertTrue("Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-      + Bytes.toString(CellUtil.cloneFamily(kv)) + "]", equals(family, CellUtil.cloneFamily(kv)));
-    assertTrue(
+    assertTrue(equals(family, CellUtil.cloneFamily(kv)),
+      "Expected family [" + Bytes.toString(family) + "] " + "Got family ["
+        + Bytes.toString(CellUtil.cloneFamily(kv)) + "]");
+    assertTrue(equals(qualifier, CellUtil.cloneQualifier(kv)),
       "Expected qualifier [" + Bytes.toString(qualifier) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(kv)) + "]",
-      equals(qualifier, CellUtil.cloneQualifier(kv)));
-    assertTrue("Expected value [" + Bytes.toString(value) + "] " + "Got value ["
-      + Bytes.toString(CellUtil.cloneValue(kv)) + "]", equals(value, CellUtil.cloneValue(kv)));
+        + Bytes.toString(CellUtil.cloneQualifier(kv)) + "]");
+    assertTrue(equals(value, CellUtil.cloneValue(kv)), "Expected value [" + Bytes.toString(value)
+      + "] " + "Got value [" + Bytes.toString(CellUtil.cloneValue(kv)) + "]");
   }
 
   protected void assertSingleResult(Result result, byte[] row, byte[] family, byte[] qualifier,
     long value) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(result.getRow()) + "]", equals(row, result.getRow()));
-    assertEquals("Expected a single key but result contains " + result.size(), 1, result.size());
+    assertTrue(equals(row, result.getRow()), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(result.getRow()) + "]");
+    assertEquals(1, result.size(), "Expected a single key but result contains " + result.size());
     Cell kv = result.rawCells()[0];
-    assertTrue("Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-      + Bytes.toString(CellUtil.cloneFamily(kv)) + "]", equals(family, CellUtil.cloneFamily(kv)));
-    assertTrue(
+    assertTrue(equals(family, CellUtil.cloneFamily(kv)),
+      "Expected family [" + Bytes.toString(family) + "] " + "Got family ["
+        + Bytes.toString(CellUtil.cloneFamily(kv)) + "]");
+    assertTrue(equals(qualifier, CellUtil.cloneQualifier(kv)),
       "Expected qualifier [" + Bytes.toString(qualifier) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(kv)) + "]",
-      equals(qualifier, CellUtil.cloneQualifier(kv)));
-    assertEquals("Expected value [" + value + "] " + "Got value ["
-      + Bytes.toLong(CellUtil.cloneValue(kv)) + "]", value, Bytes.toLong(CellUtil.cloneValue(kv)));
+        + Bytes.toString(CellUtil.cloneQualifier(kv)) + "]");
+    assertEquals(value, Bytes.toLong(CellUtil.cloneValue(kv)), "Expected value [" + value + "] "
+      + "Got value [" + Bytes.toLong(CellUtil.cloneValue(kv)) + "]");
   }
 
   protected void assertSingleResult(Result result, byte[] row, byte[] family, byte[] qualifier,
     long ts, byte[] value) {
-    assertTrue("Expected row [" + Bytes.toString(row) + "] " + "Got row ["
-      + Bytes.toString(result.getRow()) + "]", equals(row, result.getRow()));
-    assertEquals("Expected a single key but result contains " + result.size(), 1, result.size());
+    assertTrue(equals(row, result.getRow()), "Expected row [" + Bytes.toString(row) + "] "
+      + "Got row [" + Bytes.toString(result.getRow()) + "]");
+    assertEquals(1, result.size(), "Expected a single key but result contains " + result.size());
     Cell kv = result.rawCells()[0];
-    assertTrue("Expected family [" + Bytes.toString(family) + "] " + "Got family ["
-      + Bytes.toString(CellUtil.cloneFamily(kv)) + "]", equals(family, CellUtil.cloneFamily(kv)));
-    assertTrue(
+    assertTrue(equals(family, CellUtil.cloneFamily(kv)),
+      "Expected family [" + Bytes.toString(family) + "] " + "Got family ["
+        + Bytes.toString(CellUtil.cloneFamily(kv)) + "]");
+    assertTrue(equals(qualifier, CellUtil.cloneQualifier(kv)),
       "Expected qualifier [" + Bytes.toString(qualifier) + "] " + "Got qualifier ["
-        + Bytes.toString(CellUtil.cloneQualifier(kv)) + "]",
-      equals(qualifier, CellUtil.cloneQualifier(kv)));
-    assertEquals("Expected ts [" + ts + "] " + "Got ts [" + kv.getTimestamp() + "]", ts,
-      kv.getTimestamp());
-    assertTrue("Expected value [" + Bytes.toString(value) + "] " + "Got value ["
-      + Bytes.toString(CellUtil.cloneValue(kv)) + "]", equals(value, CellUtil.cloneValue(kv)));
+        + Bytes.toString(CellUtil.cloneQualifier(kv)) + "]");
+    assertEquals(ts, kv.getTimestamp(),
+      "Expected ts [" + ts + "] " + "Got ts [" + kv.getTimestamp() + "]");
+    assertTrue(equals(value, CellUtil.cloneValue(kv)), "Expected value [" + Bytes.toString(value)
+      + "] " + "Got value [" + Bytes.toString(CellUtil.cloneValue(kv)) + "]");
   }
 
   protected void assertEmptyResult(Result result) throws Exception {
-    assertTrue("expected an empty result but result contains " + result.size() + " keys",
-      result.isEmpty());
+    assertTrue(result.isEmpty(),
+      "expected an empty result but result contains " + result.size() + " keys");
   }
 
   protected void assertNullResult(Result result) throws Exception {
-    assertNull("expected null result but received a non-null result", result);
+    assertNull(result, "expected null result but received a non-null result");
   }
 
   protected void getVersionRangeAndVerifyGreaterThan(Table ht, byte[] row, byte[] family,
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestCheckAndMutate.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestCheckAndMutate.java
new file mode 100644
index 000000000000..8e0e0e3df306
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestCheckAndMutate.java
@@ -0,0 +1,337 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.io.IOException;
+import org.apache.hadoop.hbase.CompareOperator;
+import org.apache.hadoop.hbase.io.TimeRange;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
+import org.junit.jupiter.api.TestTemplate;
+
+@SuppressWarnings("deprecation")
+public class FromClientSideTestCheckAndMutate extends FromClientSideTestBase {
+
+  protected FromClientSideTestCheckAndMutate(Class<? extends ConnectionRegistry> registryImpl,
+    int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @TestTemplate
+  public void testCheckAndPut() throws IOException {
+    final byte[] anotherrow = Bytes.toBytes("anotherrow");
+    final byte[] value2 = Bytes.toBytes("abcd");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      Put put1 = new Put(ROW);
+      put1.addColumn(FAMILY, QUALIFIER, VALUE);
+
+      // row doesn't exist, so using non-null value should be considered "not match".
+      boolean ok =
+        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(VALUE).thenPut(put1);
+      assertFalse(ok);
+
+      // row doesn't exist, so using "ifNotExists" should be considered "match".
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put1);
+      assertTrue(ok);
+
+      // row now exists, so using "ifNotExists" should be considered "not match".
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put1);
+      assertFalse(ok);
+
+      Put put2 = new Put(ROW);
+      put2.addColumn(FAMILY, QUALIFIER, value2);
+
+      // row now exists, use the matching value to check
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(VALUE).thenPut(put2);
+      assertTrue(ok);
+
+      Put put3 = new Put(anotherrow);
+      put3.addColumn(FAMILY, QUALIFIER, VALUE);
+
+      // try to do CheckAndPut on different rows
+      try {
+        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(value2).thenPut(put3);
+        fail("trying to check and modify different rows should have failed.");
+      } catch (Exception ignored) {
+      }
+    }
+  }
+
+  @TestTemplate
+  public void testCheckAndMutateWithTimeRange() throws IOException {
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      final long ts = EnvironmentEdgeManager.currentTime() / 2;
+      Put put = new Put(ROW);
+      put.addColumn(FAMILY, QUALIFIER, ts, VALUE);
+
+      boolean ok =
+        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put);
+      assertTrue(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.at(ts + 10000)).ifEquals(VALUE).thenPut(put);
+      assertFalse(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.from(ts + 10000)).ifEquals(VALUE).thenPut(put);
+      assertFalse(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.between(ts + 10000, ts + 20000)).ifEquals(VALUE).thenPut(put);
+      assertFalse(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.until(ts))
+        .ifEquals(VALUE).thenPut(put);
+      assertFalse(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.at(ts))
+        .ifEquals(VALUE).thenPut(put);
+      assertTrue(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.from(ts))
+        .ifEquals(VALUE).thenPut(put);
+      assertTrue(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.between(ts, ts + 20000)).ifEquals(VALUE).thenPut(put);
+      assertTrue(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.until(ts + 10000)).ifEquals(VALUE).thenPut(put);
+      assertTrue(ok);
+
+      RowMutations rm = new RowMutations(ROW).add((Mutation) put);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.at(ts + 10000)).ifEquals(VALUE).thenMutate(rm);
+      assertFalse(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.at(ts))
+        .ifEquals(VALUE).thenMutate(rm);
+      assertTrue(ok);
+
+      Delete delete = new Delete(ROW).addColumn(FAMILY, QUALIFIER);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .timeRange(TimeRange.at(ts + 10000)).ifEquals(VALUE).thenDelete(delete);
+      assertFalse(ok);
+
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).timeRange(TimeRange.at(ts))
+        .ifEquals(VALUE).thenDelete(delete);
+      assertTrue(ok);
+    }
+  }
+
+  @TestTemplate
+  public void testCheckAndPutWithCompareOp() throws IOException {
+    final byte[] value1 = Bytes.toBytes("aaaa");
+    final byte[] value2 = Bytes.toBytes("bbbb");
+    final byte[] value3 = Bytes.toBytes("cccc");
+    final byte[] value4 = Bytes.toBytes("dddd");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      Put put2 = new Put(ROW);
+      put2.addColumn(FAMILY, QUALIFIER, value2);
+
+      Put put3 = new Put(ROW);
+      put3.addColumn(FAMILY, QUALIFIER, value3);
+
+      // row doesn't exist, so using "ifNotExists" should be considered "match".
+      boolean ok =
+        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifNotExists().thenPut(put2);
+      assertTrue(ok);
+
+      // cell = "bbbb", using "aaaa" to compare only LESS/LESS_OR_EQUAL/NOT_EQUAL
+      // turns out "match"
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER, value1).thenPut(put2);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.EQUAL, value1).thenPut(put2);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value1).thenPut(put2);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS, value1).thenPut(put2);
+      assertTrue(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS_OR_EQUAL, value1).thenPut(put2);
+      assertTrue(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.NOT_EQUAL, value1).thenPut(put3);
+      assertTrue(ok);
+
+      // cell = "cccc", using "dddd" to compare only LARGER/LARGER_OR_EQUAL/NOT_EQUAL
+      // turns out "match"
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS, value4).thenPut(put3);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS_OR_EQUAL, value4).thenPut(put3);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.EQUAL, value4).thenPut(put3);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER, value4).thenPut(put3);
+      assertTrue(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value4).thenPut(put3);
+      assertTrue(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.NOT_EQUAL, value4).thenPut(put2);
+      assertTrue(ok);
+
+      // cell = "bbbb", using "bbbb" to compare only GREATER_OR_EQUAL/LESS_OR_EQUAL/EQUAL
+      // turns out "match"
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER, value2).thenPut(put2);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.NOT_EQUAL, value2).thenPut(put2);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS, value2).thenPut(put2);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value2).thenPut(put2);
+      assertTrue(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS_OR_EQUAL, value2).thenPut(put2);
+      assertTrue(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.EQUAL, value2).thenPut(put3);
+      assertTrue(ok);
+    }
+  }
+
+  @TestTemplate
+  public void testCheckAndDelete() throws IOException {
+    final byte[] value1 = Bytes.toBytes("aaaa");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      Put put = new Put(ROW);
+      put.addColumn(FAMILY, QUALIFIER, value1);
+      table.put(put);
+
+      Delete delete = new Delete(ROW);
+      delete.addColumns(FAMILY, QUALIFIER);
+
+      boolean ok =
+        table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER).ifEquals(value1).thenDelete(delete);
+      assertTrue(ok);
+    }
+  }
+
+  @TestTemplate
+  public void testCheckAndDeleteWithCompareOp() throws IOException {
+    final byte[] value1 = Bytes.toBytes("aaaa");
+    final byte[] value2 = Bytes.toBytes("bbbb");
+    final byte[] value3 = Bytes.toBytes("cccc");
+    final byte[] value4 = Bytes.toBytes("dddd");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      Put put2 = new Put(ROW);
+      put2.addColumn(FAMILY, QUALIFIER, value2);
+      table.put(put2);
+
+      Put put3 = new Put(ROW);
+      put3.addColumn(FAMILY, QUALIFIER, value3);
+
+      Delete delete = new Delete(ROW);
+      delete.addColumns(FAMILY, QUALIFIER);
+
+      // cell = "bbbb", using "aaaa" to compare only LESS/LESS_OR_EQUAL/NOT_EQUAL
+      // turns out "match"
+      boolean ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER, value1).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.EQUAL, value1).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value1).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS, value1).thenDelete(delete);
+      assertTrue(ok);
+      table.put(put2);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS_OR_EQUAL, value1).thenDelete(delete);
+      assertTrue(ok);
+      table.put(put2);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.NOT_EQUAL, value1).thenDelete(delete);
+      assertTrue(ok);
+
+      // cell = "cccc", using "dddd" to compare only LARGER/LARGER_OR_EQUAL/NOT_EQUAL
+      // turns out "match"
+      table.put(put3);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS, value4).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS_OR_EQUAL, value4).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.EQUAL, value4).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER, value4).thenDelete(delete);
+      assertTrue(ok);
+      table.put(put3);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value4).thenDelete(delete);
+      assertTrue(ok);
+      table.put(put3);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.NOT_EQUAL, value4).thenDelete(delete);
+      assertTrue(ok);
+
+      // cell = "bbbb", using "bbbb" to compare only GREATER_OR_EQUAL/LESS_OR_EQUAL/EQUAL
+      // turns out "match"
+      table.put(put2);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER, value2).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.NOT_EQUAL, value2).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS, value2).thenDelete(delete);
+      assertFalse(ok);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.GREATER_OR_EQUAL, value2).thenDelete(delete);
+      assertTrue(ok);
+      table.put(put2);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.LESS_OR_EQUAL, value2).thenDelete(delete);
+      assertTrue(ok);
+      table.put(put2);
+      ok = table.checkAndMutate(ROW, FAMILY).qualifier(QUALIFIER)
+        .ifMatches(CompareOperator.EQUAL, value2).thenDelete(delete);
+      assertTrue(ok);
+    }
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestMultiRowMutation.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestMultiRowMutation.java
new file mode 100644
index 000000000000..e05e7e40bfb9
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestMultiRowMutation.java
@@ -0,0 +1,385 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Arrays;
+import org.apache.hadoop.hbase.CompareOperator;
+import org.apache.hadoop.hbase.filter.FilterList;
+import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
+import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.junit.jupiter.api.TestTemplate;
+
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutationProto;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutationProto.MutationType;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MultiRowMutationService;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MutateRowsRequest;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.MultiRowMutationProtos.MutateRowsResponse;
+
+public class FromClientSideTestMultiRowMutation extends FromClientSideTestBase {
+
+  protected FromClientSideTestMultiRowMutation(Class<? extends ConnectionRegistry> registryImpl,
+    int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @TestTemplate
+  public void testMultiRowMutation() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] ROW3 = Bytes.toBytes("testRow3");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.batch(Arrays.asList(new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE),
+        new Put(ROW2).addColumn(FAMILY, QUALIFIER, Bytes.toBytes(1L)),
+        new Put(ROW3).addColumn(FAMILY, QUALIFIER, VALUE)), new Object[3]);
+
+      // Execute MultiRowMutation
+      Put put = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put);
+
+      Delete delete = new Delete(ROW1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      Increment increment = new Increment(ROW2).addColumn(FAMILY, QUALIFIER, 1L);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.INCREMENT, increment);
+
+      Append append = new Append(ROW3).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m4 = ProtobufUtil.toMutation(MutationType.APPEND, append);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addMutationRequest(m4);
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertTrue(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW1));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW2));
+      assertEquals(2L, Bytes.toLong(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW3));
+      assertEquals(Bytes.toString(VALUE) + Bytes.toString(VALUE),
+        Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+    }
+  }
+
+  @TestTemplate
+  public void testMultiRowMutationWithSingleConditionWhenConditionMatches() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] VALUE1 = Bytes.toBytes("testValue1");
+    final byte[] VALUE2 = Bytes.toBytes("testValue2");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
+
+      // Execute MultiRowMutation with conditions
+      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
+      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
+      Delete delete = new Delete(ROW2);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addCondition(
+        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2, null));
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertTrue(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW1));
+      assertEquals(Bytes.toString(VALUE1), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW2));
+      assertTrue(r.isEmpty());
+    }
+  }
+
+  @TestTemplate
+  public void testMultiRowMutationWithSingleConditionWhenConditionNotMatch() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] VALUE1 = Bytes.toBytes("testValue1");
+    final byte[] VALUE2 = Bytes.toBytes("testValue2");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
+
+      // Execute MultiRowMutation with conditions
+      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
+      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
+      Delete delete = new Delete(ROW2);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addCondition(
+        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE1, null));
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertFalse(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW1));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW2));
+      assertEquals(Bytes.toString(VALUE2), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+    }
+  }
+
+  @TestTemplate
+  public void testMultiRowMutationWithMultipleConditionsWhenConditionsMatch() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] VALUE1 = Bytes.toBytes("testValue1");
+    final byte[] VALUE2 = Bytes.toBytes("testValue2");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
+
+      // Execute MultiRowMutation with conditions
+      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
+      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
+      Delete delete = new Delete(ROW2);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addCondition(
+        ProtobufUtil.toCondition(ROW, FAMILY, QUALIFIER, CompareOperator.EQUAL, null, null));
+      mrmBuilder.addCondition(
+        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2, null));
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertTrue(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW1));
+      assertEquals(Bytes.toString(VALUE1), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW2));
+      assertTrue(r.isEmpty());
+    }
+  }
+
+  @TestTemplate
+  public void testMultiRowMutationWithMultipleConditionsWhenConditionsNotMatch() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] VALUE1 = Bytes.toBytes("testValue1");
+    final byte[] VALUE2 = Bytes.toBytes("testValue2");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.put(new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2));
+
+      // Execute MultiRowMutation with conditions
+      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
+      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
+      Delete delete = new Delete(ROW2);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addCondition(
+        ProtobufUtil.toCondition(ROW1, FAMILY, QUALIFIER, CompareOperator.EQUAL, null, null));
+      mrmBuilder.addCondition(
+        ProtobufUtil.toCondition(ROW2, FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE1, null));
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertFalse(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW1));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW2));
+      assertEquals(Bytes.toString(VALUE2), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+    }
+  }
+
+  @TestTemplate
+  public void testMultiRowMutationWithFilterConditionWhenConditionMatches() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] QUALIFIER2 = Bytes.toBytes("testQualifier2");
+    final byte[] VALUE1 = Bytes.toBytes("testValue1");
+    final byte[] VALUE2 = Bytes.toBytes("testValue2");
+    final byte[] VALUE3 = Bytes.toBytes("testValue3");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.put(
+        new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2).addColumn(FAMILY, QUALIFIER2, VALUE3));
+
+      // Execute MultiRowMutation with conditions
+      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
+      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
+      Delete delete = new Delete(ROW2);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addCondition(ProtobufUtil.toCondition(ROW2,
+        new FilterList(
+          new SingleColumnValueFilter(FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2),
+          new SingleColumnValueFilter(FAMILY, QUALIFIER2, CompareOperator.EQUAL, VALUE3)),
+        null));
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertTrue(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertEquals(Bytes.toString(VALUE), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW1));
+      assertEquals(Bytes.toString(VALUE1), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+
+      r = t.get(new Get(ROW2));
+      assertTrue(r.isEmpty());
+    }
+  }
+
+  @TestTemplate
+  public void testMultiRowMutationWithFilterConditionWhenConditionNotMatch() throws Exception {
+    final byte[] ROW1 = Bytes.toBytes("testRow1");
+    final byte[] ROW2 = Bytes.toBytes("testRow2");
+    final byte[] QUALIFIER2 = Bytes.toBytes("testQualifier2");
+    final byte[] VALUE1 = Bytes.toBytes("testValue1");
+    final byte[] VALUE2 = Bytes.toBytes("testValue2");
+    final byte[] VALUE3 = Bytes.toBytes("testValue3");
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table t = conn.getTable(tableName)) {
+      // Add initial data
+      t.put(
+        new Put(ROW2).addColumn(FAMILY, QUALIFIER, VALUE2).addColumn(FAMILY, QUALIFIER2, VALUE3));
+
+      // Execute MultiRowMutation with conditions
+      Put put1 = new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE);
+      MutationProto m1 = ProtobufUtil.toMutation(MutationType.PUT, put1);
+      Put put2 = new Put(ROW1).addColumn(FAMILY, QUALIFIER, VALUE1);
+      MutationProto m2 = ProtobufUtil.toMutation(MutationType.PUT, put2);
+      Delete delete = new Delete(ROW2);
+      MutationProto m3 = ProtobufUtil.toMutation(MutationType.DELETE, delete);
+
+      MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
+      mrmBuilder.addMutationRequest(m1);
+      mrmBuilder.addMutationRequest(m2);
+      mrmBuilder.addMutationRequest(m3);
+      mrmBuilder.addCondition(ProtobufUtil.toCondition(ROW2,
+        new FilterList(
+          new SingleColumnValueFilter(FAMILY, QUALIFIER, CompareOperator.EQUAL, VALUE2),
+          new SingleColumnValueFilter(FAMILY, QUALIFIER2, CompareOperator.EQUAL, VALUE2)),
+        null));
+
+      CoprocessorRpcChannel channel = t.coprocessorService(ROW);
+      MultiRowMutationService.BlockingInterface service =
+        MultiRowMutationService.newBlockingStub(channel);
+      MutateRowsResponse response = service.mutateRows(null, mrmBuilder.build());
+
+      // Assert
+      assertFalse(response.getProcessed());
+
+      Result r = t.get(new Get(ROW));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW1));
+      assertTrue(r.isEmpty());
+
+      r = t.get(new Get(ROW2));
+      assertEquals(Bytes.toString(VALUE2), Bytes.toString(r.getValue(FAMILY, QUALIFIER)));
+    }
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestReverseScan.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestReverseScan.java
new file mode 100644
index 000000000000..f0f479bc273c
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/FromClientSideTestReverseScan.java
@@ -0,0 +1,669 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.IOException;
+import org.apache.hadoop.hbase.Cell;
+import org.apache.hadoop.hbase.CellUtil;
+import org.apache.hadoop.hbase.CompareOperator;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.Scan.ReadType;
+import org.apache.hadoop.hbase.filter.Filter;
+import org.apache.hadoop.hbase.filter.KeyOnlyFilter;
+import org.apache.hadoop.hbase.filter.QualifierFilter;
+import org.apache.hadoop.hbase.filter.RegexStringComparator;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.junit.jupiter.api.TestTemplate;
+
+public class FromClientSideTestReverseScan extends FromClientSideTestBase {
+
+  protected FromClientSideTestReverseScan(Class<? extends ConnectionRegistry> registryImpl,
+    int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @TestTemplate
+  public void testSuperSimpleWithReverseScan() throws Exception {
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
+      Put put = new Put(Bytes.toBytes("0-b11111-0000000000000000000"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b11111-0000000000000000002"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b11111-0000000000000000004"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b11111-0000000000000000006"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b11111-0000000000000000008"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b22222-0000000000000000001"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b22222-0000000000000000003"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b22222-0000000000000000005"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b22222-0000000000000000007"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      put = new Put(Bytes.toBytes("0-b22222-0000000000000000009"));
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+      Scan scan = new Scan().withStartRow(Bytes.toBytes("0-b11111-9223372036854775807"))
+        .withStopRow(Bytes.toBytes("0-b11111-0000000000000000000"), true);
+      scan.setReversed(true);
+      try (ResultScanner scanner = ht.getScanner(scan)) {
+        Result result = scanner.next();
+        assertTrue(Bytes.equals(result.getRow(), Bytes.toBytes("0-b11111-0000000000000000008")));
+      }
+    }
+  }
+
+  @TestTemplate
+  public void testFiltersWithReverseScan() throws Exception {
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
+      byte[][] ROWS = makeN(ROW, 10);
+      byte[][] QUALIFIERS =
+        { Bytes.toBytes("col0-<d2v1>-<d3v2>"), Bytes.toBytes("col1-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col2-<d2v1>-<d3v2>"), Bytes.toBytes("col3-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col4-<d2v1>-<d3v2>"), Bytes.toBytes("col5-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col6-<d2v1>-<d3v2>"), Bytes.toBytes("col7-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col8-<d2v1>-<d3v2>"), Bytes.toBytes("col9-<d2v1>-<d3v2>") };
+      for (int i = 0; i < 10; i++) {
+        Put put = new Put(ROWS[i]);
+        put.addColumn(FAMILY, QUALIFIERS[i], VALUE);
+        ht.put(put);
+      }
+      Scan scan = new Scan();
+      scan.setReversed(true);
+      scan.addFamily(FAMILY);
+      Filter filter =
+        new QualifierFilter(CompareOperator.EQUAL, new RegexStringComparator("col[1-5]"));
+      scan.setFilter(filter);
+      try (ResultScanner scanner = ht.getScanner(scan)) {
+        int expectedIndex = 5;
+        for (Result result : scanner) {
+          assertEquals(1, result.size());
+          Cell c = result.rawCells()[0];
+          assertTrue(Bytes.equals(c.getRowArray(), c.getRowOffset(), c.getRowLength(),
+            ROWS[expectedIndex], 0, ROWS[expectedIndex].length));
+          assertTrue(
+            Bytes.equals(c.getQualifierArray(), c.getQualifierOffset(), c.getQualifierLength(),
+              QUALIFIERS[expectedIndex], 0, QUALIFIERS[expectedIndex].length));
+          expectedIndex--;
+        }
+        assertEquals(0, expectedIndex);
+      }
+    }
+  }
+
+  @TestTemplate
+  public void testKeyOnlyFilterWithReverseScan() throws Exception {
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
+      byte[][] ROWS = makeN(ROW, 10);
+      byte[][] QUALIFIERS =
+        { Bytes.toBytes("col0-<d2v1>-<d3v2>"), Bytes.toBytes("col1-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col2-<d2v1>-<d3v2>"), Bytes.toBytes("col3-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col4-<d2v1>-<d3v2>"), Bytes.toBytes("col5-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col6-<d2v1>-<d3v2>"), Bytes.toBytes("col7-<d2v1>-<d3v2>"),
+          Bytes.toBytes("col8-<d2v1>-<d3v2>"), Bytes.toBytes("col9-<d2v1>-<d3v2>") };
+      for (int i = 0; i < 10; i++) {
+        Put put = new Put(ROWS[i]);
+        put.addColumn(FAMILY, QUALIFIERS[i], VALUE);
+        ht.put(put);
+      }
+      Scan scan = new Scan();
+      scan.setReversed(true);
+      scan.addFamily(FAMILY);
+      Filter filter = new KeyOnlyFilter(true);
+      scan.setFilter(filter);
+      try (ResultScanner ignored = ht.getScanner(scan)) {
+        int count = 0;
+        for (Result result : ht.getScanner(scan)) {
+          assertEquals(1, result.size());
+          assertEquals(Bytes.SIZEOF_INT, result.rawCells()[0].getValueLength());
+          assertEquals(VALUE.length, Bytes.toInt(CellUtil.cloneValue(result.rawCells()[0])));
+          count++;
+        }
+        assertEquals(10, count);
+      }
+    }
+  }
+
+  /**
+   * Test simple table and non-existent row cases.
+   */
+  @TestTemplate
+  public void testSimpleMissingWithReverseScan() throws Exception {
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
+      byte[][] ROWS = makeN(ROW, 4);
+
+      // Try to get a row on an empty table
+      Scan scan = new Scan();
+      scan.setReversed(true);
+      Result result = getSingleScanResult(ht, scan);
+      assertNullResult(result);
+
+      scan = new Scan().withStartRow(ROWS[0]);
+      scan.setReversed(true);
+      result = getSingleScanResult(ht, scan);
+      assertNullResult(result);
+
+      scan = new Scan().withStartRow(ROWS[0]).withStopRow(ROWS[1], true);
+      scan.setReversed(true);
+      result = getSingleScanResult(ht, scan);
+      assertNullResult(result);
+
+      scan = new Scan();
+      scan.setReversed(true);
+      scan.addFamily(FAMILY);
+      result = getSingleScanResult(ht, scan);
+      assertNullResult(result);
+
+      scan = new Scan();
+      scan.setReversed(true);
+      scan.addColumn(FAMILY, QUALIFIER);
+      result = getSingleScanResult(ht, scan);
+      assertNullResult(result);
+
+      // Insert a row
+      Put put = new Put(ROWS[2]);
+      put.addColumn(FAMILY, QUALIFIER, VALUE);
+      ht.put(put);
+
+      // Make sure we can scan the row
+      scan = new Scan();
+      scan.setReversed(true);
+      result = getSingleScanResult(ht, scan);
+      assertSingleResult(result, ROWS[2], FAMILY, QUALIFIER, VALUE);
+
+      scan = new Scan().withStartRow(ROWS[3]).withStopRow(ROWS[0], true);
+      scan.setReversed(true);
+      result = getSingleScanResult(ht, scan);
+      assertSingleResult(result, ROWS[2], FAMILY, QUALIFIER, VALUE);
+
+      scan = new Scan().withStartRow(ROWS[2]).withStopRow(ROWS[1], true);
+      scan.setReversed(true);
+      result = getSingleScanResult(ht, scan);
+      assertSingleResult(result, ROWS[2], FAMILY, QUALIFIER, VALUE);
+
+      // Try to scan empty rows around it
+      // Introduced MemStore#shouldSeekForReverseScan to fix the following
+      scan = new Scan().withStartRow(ROWS[1]);
+      scan.setReversed(true);
+      result = getSingleScanResult(ht, scan);
+      assertNullResult(result);
+    }
+  }
+
+  @TestTemplate
+  public void testNullWithReverseScan() throws Exception {
+    TEST_UTIL.createTable(tableName, FAMILY);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
+      // Null qualifier (should work)
+      Put put = new Put(ROW);
+      put.addColumn(FAMILY, null, VALUE);
+      ht.put(put);
+      scanTestNull(ht, ROW, FAMILY, VALUE, true);
+      Delete delete = new Delete(ROW);
+      delete.addColumns(FAMILY, null);
+      ht.delete(delete);
+    }
+
+    // Use a new table
+    TableName newTableName = TableName.valueOf(tableName.toString() + "2");
+    TEST_UTIL.createTable(newTableName, FAMILY);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(newTableName)) {
+      // Empty qualifier, byte[0] instead of null (should work)
+      Put put = new Put(ROW);
+      put.addColumn(FAMILY, HConstants.EMPTY_BYTE_ARRAY, VALUE);
+      ht.put(put);
+      scanTestNull(ht, ROW, FAMILY, VALUE, true);
+      TEST_UTIL.flush();
+      scanTestNull(ht, ROW, FAMILY, VALUE, true);
+      Delete delete = new Delete(ROW);
+      delete.addColumns(FAMILY, HConstants.EMPTY_BYTE_ARRAY);
+      ht.delete(delete);
+      // Null value
+      put = new Put(ROW);
+      put.addColumn(FAMILY, QUALIFIER, null);
+      ht.put(put);
+      Scan scan = new Scan();
+      scan.setReversed(true);
+      scan.addColumn(FAMILY, QUALIFIER);
+      Result result = getSingleScanResult(ht, scan);
+      assertSingleResult(result, ROW, FAMILY, QUALIFIER, null);
+    }
+  }
+
+  @TestTemplate
+  @SuppressWarnings("checkstyle:MethodLength")
+  public void testDeletesWithReverseScan() throws Exception {
+    byte[][] ROWS = makeNAscii(ROW, 6);
+    byte[][] FAMILIES = makeNAscii(FAMILY, 3);
+    byte[][] VALUES = makeN(VALUE, 5);
+    long[] ts = { 1000, 2000, 3000, 4000, 5000 };
+    TEST_UTIL.createTable(tableName, FAMILIES, 3);
+    try (Connection conn = getConnection(); Table ht = conn.getTable(tableName)) {
+      Put put = new Put(ROW);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[0], VALUES[0]);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[1], VALUES[1]);
+      ht.put(put);
+
+      Delete delete = new Delete(ROW);
+      delete.addFamily(FAMILIES[0], ts[0]);
+      ht.delete(delete);
+
+      Scan scan = new Scan().withStartRow(ROW);
+      scan.setReversed(true);
+      scan.addFamily(FAMILIES[0]);
+      scan.readVersions(Integer.MAX_VALUE);
+      Result result = getSingleScanResult(ht, scan);
+      assertNResult(result, ROW, FAMILIES[0], QUALIFIER, new long[] { ts[1] },
+        new byte[][] { VALUES[1] }, 0, 0);
+
+      // Test delete latest version
+      put = new Put(ROW);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[4], VALUES[4]);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[2], VALUES[2]);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[3], VALUES[3]);
+      put.addColumn(FAMILIES[0], null, ts[4], VALUES[4]);
+      put.addColumn(FAMILIES[0], null, ts[2], VALUES[2]);
+      put.addColumn(FAMILIES[0], null, ts[3], VALUES[3]);
+      ht.put(put);
+
+      delete = new Delete(ROW);
+      delete.addColumn(FAMILIES[0], QUALIFIER); // ts[4]
+      ht.delete(delete);
+
+      scan = new Scan().withStartRow(ROW);
+      scan.setReversed(true);
+      scan.addColumn(FAMILIES[0], QUALIFIER);
+      scan.readVersions(Integer.MAX_VALUE);
+      result = getSingleScanResult(ht, scan);
+      assertNResult(result, ROW, FAMILIES[0], QUALIFIER, new long[] { ts[1], ts[2], ts[3] },
+        new byte[][] { VALUES[1], VALUES[2], VALUES[3] }, 0, 2);
+
+      // Test for HBASE-1847
+      delete = new Delete(ROW);
+      delete.addColumn(FAMILIES[0], null);
+      ht.delete(delete);
+
+      // Cleanup null qualifier
+      delete = new Delete(ROW);
+      delete.addColumns(FAMILIES[0], null);
+      ht.delete(delete);
+
+      // Expected client behavior might be that you can re-put deleted values
+      // But alas, this is not to be. We can't put them back in either case.
+
+      put = new Put(ROW);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[0], VALUES[0]);
+      put.addColumn(FAMILIES[0], QUALIFIER, ts[4], VALUES[4]);
+      ht.put(put);
+
+      // The Scanner returns the previous values, the expected-naive-unexpected
+      // behavior
+
+      scan = new Scan().withStartRow(ROW);
+      scan.setReversed(true);
+      scan.addFamily(FAMILIES[0]);
+      scan.readVersions(Integer.MAX_VALUE);
+      result = getSingleScanResult(ht, scan);
+      assertNResult(result, ROW, FAMILIES[0], QUALIFIER, new long[] { ts[1], ts[2], ts[3] },
+        new byte[][] { VALUES[1], VALUES[2], VALUES[3] }, 0, 2);
+
+      // Test deleting an entire family from one row but not the other various
+      // ways
+
+      put = new Put(ROWS[0]);
+      put.addColumn(FAMILIES[1], QUALIFIER, ts[0], VALUES[0]);
+      put.addColumn(FAMILIES[1], QUALIFIER, ts[1], VALUES[1]);
+      put.addColumn(FAMILIES[2], QUALIFIER, ts[2], VALUES[2]);
+      put.addColumn(FAMILIES[2], QUALIFIER, ts[3], VALUES[3]);
+      ht.put(put);
+
+      put = new Put(ROWS[1]);
+      put.addColumn(FAMILIES[1], QUALIFIER, ts[0], VALUES[0]);
+      put.addColumn(FAMILIES[1], QUALIFIER, ts[1], VALUES[1]);
+      put.addColumn(FAMILIES[2], QUALIFIER, ts[2], VALUES[2]);
+      put.addColumn(FAMILIES[2], QUALIFIER, ts[3], VALUES[3]);
+      ht.put(put);
+
+      put = new Put(ROWS[2]);
+      put.addColumn(FAMILIES[1], QUALIFIER, ts[0], VALUES[0]);
+      put.addColumn(FAMILIES[1], QUALIFIER, ts[1], VALUES[1]);
+      put.addColumn(FAMILIES[2], QUALIFIER, ts[2], VALUES[2]);
+      put.addColumn(FAMILIES[2], QUALIFIER, ts[3], VALUES[3]);
+      ht.put(put);
+
+      delete = new Delete(ROWS[0]);
+      delete.addFamily(FAMILIES[2]);
+      ht.delete(delete);
+
+      delete = new Delete(ROWS[1]);
+      delete.addColumns(FAMILIES[1], QUALIFIER);
+      ht.delete(delete);
+
+      delete = new Delete(ROWS[2]);
+      delete.addColumn(FAMILIES[1], QUALIFIER);
+      delete.addColumn(FAMILIES[1], QUALIFIER);
+      delete.addColumn(FAMILIES[2], QUALIFIER);
+      ht.delete(delete);
+
+      scan = new Scan().withStartRow(ROWS[0]);
+      scan.setReversed(true);
+      scan.addFamily(FAMILIES[1]);
+      scan.addFamily(FAMILIES[2]);
+      scan.readVersions(Integer.MAX_VALUE);
+      result = getSingleScanResult(ht, scan);
+      assertEquals(2, result.size(), "Expected 2 keys but received " + result.size());
+      assertNResult(result, ROWS[0], FAMILIES[1], QUALIFIER, new long[] { ts[0], ts[1] },
+        new byte[][] { VALUES[0], VALUES[1] }, 0, 1);
+
+      scan = new Scan().withStartRow(ROWS[1]);
+      scan.setReversed(true);
+      scan.addFamily(FAMILIES[1]);
+      scan.addFamily(FAMILIES[2]);
+      scan.readVersions(Integer.MAX_VALUE);
+      result = getSingleScanResult(ht, scan);
+      assertEquals(2, result.size(), "Expected 2 keys but received " + result.size());
+
+      scan = new Scan().withStartRow(ROWS[2]);
+      scan.setReversed(true);
+      scan.addFamily(FAMILIES[1]);
+      scan.addFamily(FAMILIES[2]);
+      scan.readVersions(Integer.MAX_VALUE);
+      result = getSingleScanResult(ht, scan);
+      assertEquals(1, result.size());
+      assertNResult(result, ROWS[2], FAMILIES[2], QUALIFIER, new long[] { ts[2] },
+        new byte[][] { VALUES[2] }, 0, 0);
+
+      // Test if we delete the family first in one row (HBASE-1541)
+
+      delete = new Delete(ROWS[3]);
+      delete.addFamily(FAMILIES[1]);
+      ht.delete(delete);
+
+      put = new Put(ROWS[3]);
+      put.addColumn(FAMILIES[2], QUALIFIER, VALUES[0]);
+      ht.put(put);
+
+      put = new Put(ROWS[4]);
+      put.addColumn(FAMILIES[1], QUALIFIER, VALUES[1]);
+      put.addColumn(FAMILIES[2], QUALIFIER, VALUES[2]);
+      ht.put(put);
+
+      scan = new Scan().withStartRow(ROWS[4]);
+      scan.setReversed(true);
+      scan.addFamily(FAMILIES[1]);
+      scan.addFamily(FAMILIES[2]);
+      scan.readVersions(Integer.MAX_VALUE);
+      try (ResultScanner scanner = ht.getScanner(scan)) {
+        result = scanner.next();
+        assertEquals(2, result.size(), "Expected 2 keys but received " + result.size());
+        assertTrue(Bytes.equals(CellUtil.cloneRow(result.rawCells()[0]), ROWS[4]));
+        assertTrue(Bytes.equals(CellUtil.cloneRow(result.rawCells()[1]), ROWS[4]));
+        assertTrue(Bytes.equals(CellUtil.cloneValue(result.rawCells()[0]), VALUES[1]));
+        assertTrue(Bytes.equals(CellUtil.cloneValue(result.rawCells()[1]), VALUES[2]));
+        result = scanner.next();
+        assertEquals(1, result.size(), "Expected 1 key but received " + result.size());
+        assertTrue(Bytes.equals(CellUtil.cloneRow(result.rawCells()[0]), ROWS[3]));
+        assertTrue(Bytes.equals(CellUtil.cloneValue(result.rawCells()[0]), VALUES[0]));
+      }
+    }
+  }
+
+  /**
+   * Tests reversed scan under multi regions
+   */
+  @TestTemplate
+  public void testReversedScanUnderMultiRegions() throws Exception {
+    // Test Initialization.
+    byte[] maxByteArray = ConnectionUtils.MAX_BYTE_ARRAY;
+    byte[][] splitRows = new byte[][] { Bytes.toBytes("005"),
+      Bytes.add(Bytes.toBytes("005"), Bytes.multiple(maxByteArray, 16)), Bytes.toBytes("006"),
+      Bytes.add(Bytes.toBytes("006"), Bytes.multiple(maxByteArray, 8)), Bytes.toBytes("007"),
+      Bytes.add(Bytes.toBytes("007"), Bytes.multiple(maxByteArray, 4)), Bytes.toBytes("008"),
+      Bytes.multiple(maxByteArray, 2) };
+    TEST_UTIL.createTable(tableName, FAMILY, splitRows);
+    TEST_UTIL.waitUntilAllRegionsAssigned(tableName);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      try (RegionLocator l = conn.getRegionLocator(tableName)) {
+        assertEquals(splitRows.length + 1, l.getAllRegionLocations().size());
+      }
+      // Insert one row each region
+      int insertNum = splitRows.length;
+      for (byte[] splitRow : splitRows) {
+        Put put = new Put(splitRow);
+        put.addColumn(FAMILY, QUALIFIER, VALUE);
+        table.put(put);
+      }
+
+      // scan forward
+      try (ResultScanner scanner = table.getScanner(new Scan())) {
+        int count = 0;
+        for (Result r : scanner) {
+          assertFalse(r.isEmpty());
+          count++;
+        }
+        assertEquals(insertNum, count);
+      }
+
+      // scan backward
+      Scan scan = new Scan();
+      scan.setReversed(true);
+      try (ResultScanner scanner = table.getScanner(scan)) {
+        int count = 0;
+        byte[] lastRow = null;
+        for (Result r : scanner) {
+          assertFalse(r.isEmpty());
+          count++;
+          byte[] thisRow = r.getRow();
+          if (lastRow != null) {
+            assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+              + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+          }
+          lastRow = thisRow;
+        }
+        assertEquals(insertNum, count);
+      }
+    }
+  }
+
+  /**
+   * Tests reversed scan under multi regions
+   */
+  @TestTemplate
+  public void testSmallReversedScanUnderMultiRegions() throws Exception {
+    // Test Initialization.
+    byte[][] splitRows = new byte[][] { Bytes.toBytes("000"), Bytes.toBytes("002"),
+      Bytes.toBytes("004"), Bytes.toBytes("006"), Bytes.toBytes("008"), Bytes.toBytes("010") };
+    TEST_UTIL.createTable(tableName, FAMILY, splitRows);
+    TEST_UTIL.waitUntilAllRegionsAssigned(tableName);
+    try (Connection conn = getConnection(); Table table = conn.getTable(tableName)) {
+      try (RegionLocator l = conn.getRegionLocator(tableName)) {
+        assertEquals(splitRows.length + 1, l.getAllRegionLocations().size());
+      }
+      for (byte[] splitRow : splitRows) {
+        Put put = new Put(splitRow);
+        put.addColumn(FAMILY, QUALIFIER, VALUE);
+        table.put(put);
+
+        byte[] nextRow = Bytes.copy(splitRow);
+        nextRow[nextRow.length - 1]++;
+
+        put = new Put(nextRow);
+        put.addColumn(FAMILY, QUALIFIER, VALUE);
+        table.put(put);
+      }
+
+      // scan forward
+      try (ResultScanner scanner = table.getScanner(new Scan())) {
+        int count = 0;
+        for (Result r : scanner) {
+          assertTrue(!r.isEmpty());
+          count++;
+        }
+        assertEquals(12, count);
+      }
+
+      reverseScanTest(table, ReadType.STREAM);
+      reverseScanTest(table, ReadType.PREAD);
+      reverseScanTest(table, ReadType.DEFAULT);
+    }
+  }
+
+  private void reverseScanTest(Table table, ReadType readType) throws IOException {
+    // scan backward
+    Scan scan = new Scan();
+    scan.setReversed(true);
+    try (ResultScanner scanner = table.getScanner(scan)) {
+      int count = 0;
+      byte[] lastRow = null;
+      for (Result r : scanner) {
+        assertTrue(!r.isEmpty());
+        count++;
+        byte[] thisRow = r.getRow();
+        if (lastRow != null) {
+          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+        }
+        lastRow = thisRow;
+      }
+      assertEquals(12, count);
+    }
+
+    scan = new Scan();
+    scan.setReadType(readType);
+    scan.setReversed(true);
+    scan.withStartRow(Bytes.toBytes("002"));
+    try (ResultScanner scanner = table.getScanner(scan)) {
+      int count = 0;
+      byte[] lastRow = null;
+      for (Result r : scanner) {
+        assertTrue(!r.isEmpty());
+        count++;
+        byte[] thisRow = r.getRow();
+        if (lastRow != null) {
+          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+        }
+        lastRow = thisRow;
+      }
+      assertEquals(3, count); // 000 001 002
+    }
+
+    scan = new Scan();
+    scan.setReadType(readType);
+    scan.setReversed(true);
+    scan.withStartRow(Bytes.toBytes("002"));
+    scan.withStopRow(Bytes.toBytes("000"));
+    try (ResultScanner scanner = table.getScanner(scan)) {
+      int count = 0;
+      byte[] lastRow = null;
+      for (Result r : scanner) {
+        assertFalse(r.isEmpty());
+        count++;
+        byte[] thisRow = r.getRow();
+        if (lastRow != null) {
+          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+        }
+        lastRow = thisRow;
+      }
+      assertEquals(2, count); // 001 002
+    }
+
+    scan = new Scan();
+    scan.setReadType(readType);
+    scan.setReversed(true);
+    scan.withStartRow(Bytes.toBytes("001"));
+    try (ResultScanner scanner = table.getScanner(scan)) {
+      int count = 0;
+      byte[] lastRow = null;
+      for (Result r : scanner) {
+        assertFalse(r.isEmpty());
+        count++;
+        byte[] thisRow = r.getRow();
+        if (lastRow != null) {
+          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+        }
+        lastRow = thisRow;
+      }
+      assertEquals(2, count); // 000 001
+    }
+
+    scan = new Scan();
+    scan.setReadType(readType);
+    scan.setReversed(true);
+    scan.withStartRow(Bytes.toBytes("000"));
+    try (ResultScanner scanner = table.getScanner(scan)) {
+      int count = 0;
+      byte[] lastRow = null;
+      for (Result r : scanner) {
+        assertFalse(r.isEmpty());
+        count++;
+        byte[] thisRow = r.getRow();
+        if (lastRow != null) {
+          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+        }
+        lastRow = thisRow;
+      }
+      assertEquals(1, count); // 000
+    }
+
+    scan = new Scan();
+    scan.setReadType(readType);
+    scan.setReversed(true);
+    scan.withStartRow(Bytes.toBytes("006"));
+    scan.withStopRow(Bytes.toBytes("002"));
+    try (ResultScanner scanner = table.getScanner(scan)) {
+      int count = 0;
+      byte[] lastRow = null;
+      for (Result r : scanner) {
+        assertFalse(r.isEmpty());
+        count++;
+        byte[] thisRow = r.getRow();
+        if (lastRow != null) {
+          assertTrue(Bytes.compareTo(thisRow, lastRow) < 0, "Error scan order, last row= "
+            + Bytes.toString(lastRow) + ",this row=" + Bytes.toString(thisRow));
+        }
+        lastRow = thisRow;
+      }
+      assertEquals(4, count); // 003 004 005 006
+    }
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5.java
index 4efedafbf2a1..b4017a23803a 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5.java
@@ -19,7 +19,6 @@
 
 import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
 import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
-import org.apache.hadoop.hbase.regionserver.NoOpScanPolicyObserver;
 import org.apache.hadoop.hbase.testclassification.ClientTests;
 import org.apache.hadoop.hbase.testclassification.LargeTests;
 import org.junit.jupiter.api.BeforeAll;
@@ -41,6 +40,6 @@ public TestFromClientSide5(Class<? extends ConnectionRegistry> registryImpl, int
 
   @BeforeAll
   public static void setUpBeforeClass() throws Exception {
-    initialize(NoOpScanPolicyObserver.class, MultiRowMutationEndpoint.class);
+    initialize(MultiRowMutationEndpoint.class);
   }
 }
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5WithCoprocessor.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5WithCoprocessor.java
index b7203a0b5858..c1785665d899 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5WithCoprocessor.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide5WithCoprocessor.java
@@ -19,6 +19,7 @@
 
 import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
 import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.regionserver.NoOpScanPolicyObserver;
 import org.apache.hadoop.hbase.testclassification.ClientTests;
 import org.apache.hadoop.hbase.testclassification.LargeTests;
 import org.junit.jupiter.api.BeforeAll;
@@ -41,6 +42,6 @@ public TestFromClientSide5WithCoprocessor(Class<? extends ConnectionRegistry> re
 
   @BeforeAll
   public static void setUpBeforeClass() throws Exception {
-    initialize(MultiRowMutationEndpoint.class);
+    initialize(NoOpScanPolicyObserver.class, MultiRowMutationEndpoint.class);
   }
 }
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideCheckAndMutate.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideCheckAndMutate.java
new file mode 100644
index 000000000000..be10e310ddb7
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideCheckAndMutate.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
+import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+
+@Tag(LargeTests.TAG)
+@Tag(ClientTests.TAG)
+@HBaseParameterizedTestTemplate(name = "{index}: registryImpl={0}, numHedgedReqs={1}")
+public class TestFromClientSideCheckAndMutate extends FromClientSideTestCheckAndMutate {
+
+  public TestFromClientSideCheckAndMutate(Class<? extends ConnectionRegistry> registryImpl,
+    int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @BeforeAll
+  public static void setUpBeforeClass() throws Exception {
+    initialize(MultiRowMutationEndpoint.class);
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideCheckAndMutateWithCoprocessor.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideCheckAndMutateWithCoprocessor.java
new file mode 100644
index 000000000000..965f84b4a662
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideCheckAndMutateWithCoprocessor.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
+import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.regionserver.NoOpScanPolicyObserver;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+
+@Tag(LargeTests.TAG)
+@Tag(ClientTests.TAG)
+@HBaseParameterizedTestTemplate(name = "{index}: registryImpl={0}, numHedgedReqs={1}")
+public class TestFromClientSideCheckAndMutateWithCoprocessor
+  extends FromClientSideTestCheckAndMutate {
+
+  public TestFromClientSideCheckAndMutateWithCoprocessor(
+    Class<? extends ConnectionRegistry> registryImpl, int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @BeforeAll
+  public static void setUpBeforeClass() throws Exception {
+    initialize(NoOpScanPolicyObserver.class, MultiRowMutationEndpoint.class);
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideMultiRowMutation.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideMultiRowMutation.java
new file mode 100644
index 000000000000..b94d225ccfac
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideMultiRowMutation.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
+import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+
+@Tag(LargeTests.TAG)
+@Tag(ClientTests.TAG)
+@HBaseParameterizedTestTemplate(name = "{index}: registryImpl={0}, numHedgedReqs={1}")
+public class TestFromClientSideMultiRowMutation extends FromClientSideTestMultiRowMutation {
+
+  public TestFromClientSideMultiRowMutation(Class<? extends ConnectionRegistry> registryImpl,
+    int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @BeforeAll
+  public static void setUpBeforeClass() throws Exception {
+    initialize(MultiRowMutationEndpoint.class);
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideMultiRowMutationWithCoprocessor.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideMultiRowMutationWithCoprocessor.java
new file mode 100644
index 000000000000..8a7685e05e3b
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideMultiRowMutationWithCoprocessor.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
+import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.regionserver.NoOpScanPolicyObserver;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+
+@Tag(LargeTests.TAG)
+@Tag(ClientTests.TAG)
+@HBaseParameterizedTestTemplate(name = "{index}: registryImpl={0}, numHedgedReqs={1}")
+public class TestFromClientSideMultiRowMutationWithCoprocessor
+  extends FromClientSideTestMultiRowMutation {
+
+  public TestFromClientSideMultiRowMutationWithCoprocessor(
+    Class<? extends ConnectionRegistry> registryImpl, int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @BeforeAll
+  public static void setUpBeforeClass() throws Exception {
+    initialize(NoOpScanPolicyObserver.class, MultiRowMutationEndpoint.class);
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideReverseScan.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideReverseScan.java
new file mode 100644
index 000000000000..e4d3c27a1782
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideReverseScan.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
+import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+
+@Tag(LargeTests.TAG)
+@Tag(ClientTests.TAG)
+@HBaseParameterizedTestTemplate(name = "{index}: registryImpl={0}, numHedgedReqs={1}")
+public class TestFromClientSideReverseScan extends FromClientSideTestReverseScan {
+
+  public TestFromClientSideReverseScan(Class<? extends ConnectionRegistry> registryImpl,
+    int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @BeforeAll
+  public static void setUpBeforeClass() throws Exception {
+    initialize(MultiRowMutationEndpoint.class);
+  }
+}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideReverseScanWithCoprocessor.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideReverseScanWithCoprocessor.java
new file mode 100644
index 000000000000..03c6693f1330
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideReverseScanWithCoprocessor.java
@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
+import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
+import org.apache.hadoop.hbase.regionserver.NoOpScanPolicyObserver;
+import org.apache.hadoop.hbase.testclassification.ClientTests;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+
+@Tag(LargeTests.TAG)
+@Tag(ClientTests.TAG)
+@HBaseParameterizedTestTemplate(name = "{index}: registryImpl={0}, numHedgedReqs={1}")
+public class TestFromClientSideReverseScanWithCoprocessor extends FromClientSideTestReverseScan {
+
+  public TestFromClientSideReverseScanWithCoprocessor(
+    Class<? extends ConnectionRegistry> registryImpl, int numHedgedReqs) {
+    super(registryImpl, numHedgedReqs);
+  }
+
+  @BeforeAll
+  public static void setUpBeforeClass() throws Exception {
+    initialize(NoOpScanPolicyObserver.class, MultiRowMutationEndpoint.class);
+  }
+}