diff --git a/common/kvstore/src/test/java/org/apache/spark/util/kvstore/ArrayKeyIndexType.java b/common/kvstore/src/test/java/org/apache/spark/util/kvstore/ArrayKeyIndexType.java
index 32030fb4115c3..dd53fdf0b1b4c 100644
--- a/common/kvstore/src/test/java/org/apache/spark/util/kvstore/ArrayKeyIndexType.java
+++ b/common/kvstore/src/test/java/org/apache/spark/util/kvstore/ArrayKeyIndexType.java
@@ -38,7 +38,7 @@ public boolean equals(Object o) {
 
   @Override
   public int hashCode() {
-    return key.hashCode();
+    return Arrays.hashCode(key) ^ Arrays.hashCode(id);
   }
 
 }