我正在运行 Flink 应用程序（通过 Yarn），似乎有时任务管理器会随机超时，这是错误：
java.util.concurrent.TimeoutException: Heartbeat of TaskManager with id someId timed out.
at org.apache.flink.runtime.jobmaster.JobMaster$TaskManagerHeartbeatListener.notifyHeartbeatTimeout(JobMaster.java:1610)
at org.apache.flink.runtime.heartbeat.HeartbeatManagerImpl$HeartbeatMonitor.run(HeartbeatManagerImpl.java:339)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.flink.runtime.concurrent.akka.ActorSystemScheduledExecutorAdapter$ScheduledFutureTask.run(ActorSystemScheduledExecutorAdapter.java:154)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
这会在作业开始运行 30-45 分钟后发生。关于可能导致此问题的任何想法？
出现这个问题的原因可能是JobManager内存太小，尝试调大一些
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