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  1. Apache Ozone
  2. HDDS-3719

Datanode may fail to stop

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Details

    • Bug
    • Status: Resolved
    • Critical
    • Resolution: Fixed
    • None
    • 1.0.0
    • Ozone Datanode

    Description

      TestOzoneManagerListVolumes timed out after 2 minutes while trying to stop the mini cluster. It seems one of the datanodes was stuck in an infinite loop trying to execute a task on a terminated executor:

      2020-06-03 15:28:19,475 [Datanode State Machine Thread - 0] ERROR statemachine.DatanodeStateMachine (DatanodeStateMachine.java:start(221)) - Unable to finish the execution.
      java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.ExecutorCompletionService$QueueingFuture@73c36b6c rejected from org.apache.hadoop.util.concurrent.HadoopThreadPoolExecutor@5c021707[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 24]
      	at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
      	at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
      	at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
      	at java.util.concurrent.ExecutorCompletionService.submit(ExecutorCompletionService.java:181)
      	at org.apache.hadoop.ozone.container.common.states.datanode.RunningDatanodeState.execute(RunningDatanodeState.java:143)
      	at org.apache.hadoop.ozone.container.common.statemachine.StateContext.execute(StateContext.java:411)
      	at org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.start(DatanodeStateMachine.java:208)
      	at org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.lambda$startDaemon$0(DatanodeStateMachine.java:375)
      	at java.lang.Thread.run(Thread.java:748)
      
      grep -c 'Unable to finish the execution' hadoop-ozone/integration-test/org.apache.hadoop.ozone.om.TestOzoneManagerListVolumes-output.txt
      2087250
      

      Test output eventually grew to 2.6GB.

      https://github.com/apache/hadoop-ozone/runs/735169623

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            adoroszlai Attila Doroszlai Assign to me
            adoroszlai Attila Doroszlai
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              Updated:
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