Github user wangzhijiang999 commented on a diff in the pull request: https://github.com/apache/flink/pull/3151#discussion_r100031031 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskManagerRunner.java --- @@ -112,6 +114,13 @@ public TaskManagerRunner( // Initialize the TM metrics TaskExecutorMetricsInitializer.instantiateStatusMetrics(taskManagerMetricGroup, taskManagerServices.getNetworkEnvironment()); + HeartbeatManagerImpl heartbeatManager = new HeartbeatManagerImpl( + taskManagerConfiguration.getTimeout().toMilliseconds(), + resourceID, + executor, + Executors.newSingleThreadScheduledExecutor(), --- End diff -- Do you have further suggestions where to introduce the **ScheduledExecutorService** seems suitable?
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