XComp commented on code in PR #22844:
URL: https://github.com/apache/flink/pull/22844#discussion_r1251577433


##########
flink-runtime/src/test/java/org/apache/flink/runtime/leaderelection/DefaultLeaderElectionServiceTest.java:
##########
@@ -932,38 +1064,71 @@ void runTestWithManuallyTriggeredEvents(
 
         void runTest(RunnableWithException testMethod, ExecutorService 
leaderEventOperationExecutor)
                 throws Exception {
-            try {
-                leaderElectionService =
-                        new DefaultLeaderElectionService(
-                                driverFactory,
-                                
DefaultLeaderElectionServiceTest.this.fatalErrorHandlerExtension
-                                        .getTestingFatalErrorHandler(),
-                                leaderEventOperationExecutor);
+            try (final DefaultLeaderElectionService localLeaderElectionService 
=
+                    new DefaultLeaderElectionService(
+                            driverFactory,
+                            
DefaultLeaderElectionServiceTest.this.fatalErrorHandlerExtension
+                                    .getTestingFatalErrorHandler(),
+                            leaderEventOperationExecutor)) {
+                leaderElectionService = localLeaderElectionService;
                 leaderElectionService.startLeaderElectionBackend();
                 testingLeaderElectionDriver = 
driverFactory.assertAndGetOnlyCreatedDriver();
 
-                leaderElection = 
leaderElectionService.createLeaderElection(contenderID);
-                testingContender = new TestingContender(TEST_URL, 
leaderElection);
-                testingContender.startLeaderElection();
+                try (final ContenderContext localContenderContext0 =
+                                ContenderContext.create(0, 
leaderElectionService);
+                        final ContenderContext localContenderContext1 =
+                                ContenderContext.create(1, 
leaderElectionService)) {
+                    this.contenderContext0 = localContenderContext0;
+                    this.contenderContext1 = localContenderContext1;

Review Comment:
   Yes, the purpose was to have the `DefaultLeaderElectionServiceTest` 
providing functionality for multiple contenders



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