vineetgarg02 commented on a change in pull request #1525:
URL: https://github.com/apache/hive/pull/1525#discussion_r500661508



##########
File path: 
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveSubQueryRemoveRule.java
##########
@@ -406,6 +409,16 @@ private RexNode rewriteInExists(RexSubQuery e, 
Set<CorrelationId> variablesSet,
         offset = offset + 1;
         builder.push(e.rel);
       }
+    } else if (e.getKind() == SqlKind.EXISTS && !variablesSet.isEmpty()) {
+      // Query has 'exists' and correlation:

Review comment:
       Can you add a comment to explain/mention why limit is being removed for 
correlated EXISTs?




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