yanghua commented on a change in pull request #6567: [FLINK-10074] Allowable 
number of checkpoint failures
URL: https://github.com/apache/flink/pull/6567#discussion_r215670211
 
 

 ##########
 File path: 
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/StreamTask.java
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 @@ -875,6 +876,9 @@ public void run() {
                                                localTaskOperatorSubtaskStates,
                                                asyncDurationMillis);
 
+                                       if 
(owner.asynchronousCheckpointExceptionHandler != null) {
 
 Review comment:
   @azagrebin In the normal runtime it will not be null, plus this judgment is 
mainly for the checkpoint test code (it does not perform the initialization 
logic for the asynchronousCheckpointExceptionHandler), if not added then the 
test code will report to the NPE, so in the second commit, I added this 
judgment.

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