sunhaibotb commented on a change in pull request #10151: [FLINK-14231] Handle 
the processing-time timers before closing operator to properly support endInput
URL: https://github.com/apache/flink/pull/10151#discussion_r348390418
 
 

 ##########
 File path: 
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/StreamTask.java
 ##########
 @@ -994,10 +972,18 @@ TimerService getTimerService() {
                return timerService;
        }
 
-       public ProcessingTimeService getProcessingTimeService(int 
operatorIndex) {
+       @VisibleForTesting
+       StreamOperator<?> getHeadOperator() {
+               return operatorChain.getHeadOperator();
+       }
+
+       public ProcessingTimeService getProcessingTimeService(StreamOperator<?> 
operator, int chainIndex) {
 
 Review comment:
   The parameter passed in `getprocessingTimeService` is `chainindex`, but also 
there is no data structure mapping `chainIndex` to `operatorIndex ` in 
`OperatorChain`.

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