HeartSaVioR commented on code in PR #45341:
URL: https://github.com/apache/spark/pull/45341#discussion_r1520688468


##########
sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/MapStateSuite.scala:
##########
@@ -67,6 +67,7 @@ class MapStateSuite extends StateVariableSuiteBase {
       assert(!testState.exists())
       assert(testState.getMap().hasNext === false)
     }
+    ImplicitGroupingKeyTracker.removeImplicitKey()

Review Comment:
   Maybe just do this in setup (before) in StateVariableSuiteBase, to ensure 
the cleanup is guaranteed to be done - as failure in test A won't clean up the 
thread local and introduce another failure. We do like to avoid cascading 
failures.



##########
sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/MapStateSuite.scala:
##########
@@ -67,6 +67,7 @@ class MapStateSuite extends StateVariableSuiteBase {
       assert(!testState.exists())
       assert(testState.getMap().hasNext === false)
     }
+    ImplicitGroupingKeyTracker.removeImplicitKey()

Review Comment:
   Maybe just do this in setup (before) or teardown (after) in 
StateVariableSuiteBase, to ensure the cleanup is guaranteed to be done - as 
failure in test A won't clean up the thread local and introduce another 
failure. We do like to avoid cascading failures.



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