Aitozi commented on a change in pull request #17398:
URL: https://github.com/apache/flink/pull/17398#discussion_r722003005



##########
File path: 
flink-runtime/src/test/java/org/apache/flink/runtime/leaderelection/ZooKeeperLeaderElectionConnectionHandlingTest.java
##########
@@ -131,7 +130,8 @@ private void runTestWithZooKeeperConnectionProblem(
             Problem problem)
             throws Exception {
         CuratorFramework client =
-                ZooKeeperUtils.startCuratorFramework(configuration, 
NoOpFatalErrorHandler.INSTANCE);
+                ZooKeeperUtils.startCuratorFramework(
+                        configuration, 
fatalErrorHandlerResource.getFatalErrorHandler());

Review comment:
       After going over all the call sites from 
`startCuratorFramework(Configuration, FatalErrorHandler)`.  I think only the 
place which use client to create `LeaderRetrieval/LeaderElectionService` should 
replace using `NoOpFatalErrorHandler` with the explicit 
`fatalErrorHandlerResource`
   
   ```
   ZooKeeperLeaderRetrievalTest
   ZooKeeperLeaderRetrievalConnectionHandlingTest
   ZooKeeperLeaderElectionTest
   ZooKeeperLeaderElectionConnectionHandlingTest
   ZooKeeperHaServicesTest
   ZooKeeperDefaultDispatcherRunnerTest
   LeaderElectionTest
   ```
   
   WDYT @tillrohrmann 




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