diff --git a/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/SplitGrouper.java b/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/SplitGrouper.java
index 2ce7ed88c8b9..dd6a91b46098 100644
--- a/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/SplitGrouper.java
+++ b/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/SplitGrouper.java
@@ -29,7 +29,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
-import java.util.concurrent.ConcurrentHashMap;
 
 import org.apache.hadoop.hive.ql.io.AcidUtils;
 import org.apache.hadoop.hive.ql.io.BucketizedHiveInputFormat;
@@ -71,8 +70,8 @@ public class SplitGrouper {
 
   // TODO This needs to be looked at. Map of Map to Map... Made concurrent for now since split generation
   // can happen in parallel.
-  private static final Map<Map<Path, PartitionDesc>, Map<Path, PartitionDesc>> cache =
-      new ConcurrentHashMap<>();
+  private final Map<Map<Path, PartitionDesc>, Map<Path, PartitionDesc>> cache =
+      new HashMap<>();
 
   private final TezMapredSplitsGrouper tezGrouper = new TezMapredSplitsGrouper();