BsoBird commented on code in PR #5934:
URL: https://github.com/apache/hive/pull/5934#discussion_r2191913274


##########
ql/src/java/org/apache/hadoop/hive/ql/exec/tez/SplitGrouper.java:
##########
@@ -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 =

Review Comment:
   @deniskuzZ 
   Sir, I have synchronized your changes, but I did not synchronize the 
modifications to HadoopCatalog. It may need to be split into another ISSUE.



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