diff --git a/CHANGES.txt b/CHANGES.txt
index 4e5f27ed1..e0924e163 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,5 +1,6 @@
 0.5.0
 -----
+ * Downgrade noisy TokenPartitioner partition/range maps to DEBUG (CASSANALYTICS-52)
  * Make BulkWriterConfig extensible (CASSANALYTICS-168)
 
 0.4.0
diff --git a/cassandra-analytics-common/src/main/java/org/apache/cassandra/spark/data/partitioner/TokenPartitioner.java b/cassandra-analytics-common/src/main/java/org/apache/cassandra/spark/data/partitioner/TokenPartitioner.java
index 6f63c357a..11aa26c5a 100644
--- a/cassandra-analytics-common/src/main/java/org/apache/cassandra/spark/data/partitioner/TokenPartitioner.java
+++ b/cassandra-analytics-common/src/main/java/org/apache/cassandra/spark/data/partitioner/TokenPartitioner.java
@@ -116,9 +116,9 @@ private void calculateTokenRangeMap()
         validateCompleteRangeCoverage();
         validateRangesDoNotOverlap();
 
-        LOGGER.info("Number of partitions {}", reversePartitionMap.size());
-        LOGGER.info("Partition map " + partitionMap);
-        LOGGER.info("Reverse partition map " + reversePartitionMap);
+        LOGGER.debug("Number of partitions {}", reversePartitionMap.size());
+        LOGGER.debug("Partition map {}", partitionMap);
+        LOGGER.debug("Reverse partition map {}", reversePartitionMap);
     }
 
     private static int calculateSplits(CassandraRing ring, int defaultParallelism, Integer cores)
@@ -126,7 +126,7 @@ private static int calculateSplits(CassandraRing ring, int defaultParallelism, I
         int tasksToRun = Math.max(cores, defaultParallelism);
         LOGGER.info("Tasks to run: {}", tasksToRun);
         Map<Range<BigInteger>, List<CassandraInstance>> rangeListMap = ring.rangeMap().asMapOfRanges();
-        LOGGER.info("Initial ranges: {}", rangeListMap);
+        LOGGER.debug("Initial ranges: {}", rangeListMap);
         int ranges = rangeListMap.size();
         LOGGER.info("Number of ranges: {}", ranges);
         int calculatedSplits = TokenPartitioner.divCeil(tasksToRun, ranges);
diff --git a/cassandra-analytics-core/src/main/java/org/apache/cassandra/spark/bulkwriter/TokenPartitioner.java b/cassandra-analytics-core/src/main/java/org/apache/cassandra/spark/bulkwriter/TokenPartitioner.java
index 479ddcae0..c0b049eda 100644
--- a/cassandra-analytics-core/src/main/java/org/apache/cassandra/spark/bulkwriter/TokenPartitioner.java
+++ b/cassandra-analytics-core/src/main/java/org/apache/cassandra/spark/bulkwriter/TokenPartitioner.java
@@ -104,9 +104,9 @@ public TokenPartitioner(TokenRangeMapping<RingInstance> tokenRangeMapping,
 
     private void logPartitionInfo()
     {
-        LOGGER.info("Number of partitions: {}", nrPartitions);
-        LOGGER.info("Partition map: {}", partitionMap);
-        LOGGER.info("Reverse partition map: {}", reversePartitionMap);
+        LOGGER.debug("Number of partitions: {}", nrPartitions);
+        LOGGER.debug("Partition map: {}", partitionMap);
+        LOGGER.debug("Reverse partition map: {}", reversePartitionMap);
     }
 
     /**
@@ -278,7 +278,7 @@ public int calculateSplits(TokenRangeMapping<RingInstance> tokenRangeMapping,
         }
         int tasksToRun = Math.max(cores, defaultParallelism);
         Map<Range<BigInteger>, List<RingInstance>> rangeListMap = tokenRangeMapping.getRangeMap().asMapOfRanges();
-        LOGGER.info("Initial ranges: {}", rangeListMap);
+        LOGGER.debug("Initial ranges: {}", rangeListMap);
         int ranges = rangeListMap.size();
         LOGGER.info("Number of ranges: {}", ranges);
         int calculatedSplits = divCeil(tasksToRun, ranges);