new test case with bind marker and literal

Author: omniCoder77

src/java/org/apache/cassandra/db/guardrails/Guardrails.java

@@ -617,13 +617,13 @@ public final class Guardrails implements GuardrailsMBean
                             what, value, isWarning ? "warning" : "failure", threshold));
 
     /**
-     * Prevents heap exhaustion caused by the anti-pattern of preparing queries with
+     * Prevents cache overflow and eviction caused by the anti-pattern of preparing queries with
      * hardcoded literals instead of bind markers. This prevents filling the statement cache with non-reusable entries.
      */
 
     public static final EnableFlag mispreparedStatementsEnabled =
     new EnableFlag("misprepared_statements_enabled",
-                   "misprepared statements cause server-side memory exhaustion and high GC pressure by flooding the statement cache with non-reusable query entries",
+                   "misprepared statements create non-reusable query entries and cause cache overflow",
                    state -> CONFIG_PROVIDER.getOrCreate(state).getMispreparedStatementsEnabled(),
                    "misprepared statements");
 

src/java/org/apache/cassandra/db/guardrails/GuardrailsConfig.java

@@ -408,7 +408,7 @@ public interface GuardrailsConfig
 
     /**
      * <p>
-     * A statement is considered "mis-prepared" if it contains hardcoded literal values
+     * A statement is considered "mis-prepared" if it contains only hardcoded liter values and without any bind markers
      * instead of bind markers. This is a performance anti-pattern because it prevents
      * query plan reuse and floods the server-side Prepared Statement Cache with
      * unique entries, leading to heap exhaustion and high GC pressure.

test/unit/org/apache/cassandra/cql3/MispreparedStatementsTest.java

@@ -219,12 +219,20 @@ public void testMultiTableBatchGuardrailAllLiteral()
     }
 
     @Test
-    public void testProperlyPreparedWithBindMarkers()
+    public void testSucceedWithOnlyBindMarkers()
     {
         assertGuardrailPassed(String.format("SELECT * FROM %s WHERE id = ? AND name = ?", currentTable()));
         assertNoWarnings();
     }
 
+    @Test
+    public void testSucceedWithOneBindMarkerOneLiteral()
+    {
+
+        assertGuardrailPassed(String.format("SELECT * FROM %s WHERE id = ? AND name = 'v1'", currentTable()));
+        assertNoWarnings();
+    }
+
     @Test
     public void testSelectAllPasses()
     {