[GitHub] [beam] Abacn commented on issue #26301: [Failing Test]: beam_PreCommit_Java_PVR_Flink_Batch stuck

["Abacn (via GitHub)" <gi...@apache.org>]

Abacn commented on issue #26301:
URL: https://github.com/apache/beam/issues/26301#issuecomment-1511902087

   The sampler continuously emitting warnings indicating job stuck:
   ```
   [pool-258-thread-2] WARN org.apache.beam.fn.harness.control.ExecutionStateSampler - Operation ongoing in bundle 12 for at least 01h00m51s without outputting or completing:
   at sun.misc.Unsafe.park(Native Method)
   at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
   at org.apache.beam.sdk.fn.CancellableQueue.take(CancellableQueue.java:94)
   at org.apache.beam.sdk.fn.data.BeamFnDataInboundObserver.awaitCompletion(BeamFnDataInboundObserver.java:122)
   at org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:550)
   at org.apache.beam.fn.harness.FnHarness$$Lambda$1264/2051412990.apply(Unknown Source)
   at org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:151)
   at org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver.lambda$onNext$0(BeamFnControlClient.java:116)
   at org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver$$Lambda$1391/138607428.run(Unknown Source)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at org.apache.beam.sdk.util.UnboundedScheduledExecutorService$ScheduledFutureTask.run(UnboundedScheduledExecutorService.java:163)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   at java.lang.Thread.run(Thread.java:750)
   ```
   However this code path is generic and not help much for root cause


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