reswqa commented on code in PR #22632:
URL: https://github.com/apache/flink/pull/22632#discussion_r1204491318


##########
flink-runtime/src/test/java/org/apache/flink/runtime/dispatcher/runner/DefaultDispatcherRunnerITCase.java:
##########
@@ -173,8 +175,7 @@ private DispatcherGateway 
electLeaderAndRetrieveGateway(UUID firstLeaderSessionI
      * fail.
      */
     @Test
-    public void 
leaderChange_withBlockingJobManagerTermination_doesNotAffectNewLeader()
-            throws Exception {
+    void 
leaderChange_withBlockingJobManagerTermination_doesNotAffectNewLeader() throws 
Exception {
         final TestingJobMasterServiceLeadershipRunnerFactory 
jobManagerRunnerFactory =
                 new TestingJobMasterServiceLeadershipRunnerFactory(1);
         final TestingCleanupRunnerFactory cleanupRunnerFactory = new 
TestingCleanupRunnerFactory();

Review Comment:
   > Here below similar question about dispatcherRunner whether we need it or 
not... (in case yes... may just add a comment)
   
   It is also necessary for this test as `dispatcherRunner` will start 
`LeaderElectionService` and play the role of `LeaderContender`.
   
   > where some resources are opened without closing... may be put it in try 
resource
   
   Done, but I didn't put it in the `try()` where `dispatcherRunner` is located 
because it relies on the execution of `dispatcherLeaderElectionService. 
isLeader (UUID. randomUUID()). get().` and I don't want to include logic 
unrelated to object creation in the try statement.
   
   



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