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  1. Flume
  2. FLUME-2786

It will enter a deadlock state when modify the conf file before I stop flume-ng

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 1.6.0
    • Fix Version/s: 1.8.1, 1.9.0
    • Component/s: Master
    • Labels:
      None
    • Flags:
      Important

      Description

      When modify the conf fileļ¼Œand then I stop the flume-ng, It will enter a deadlock state.

      jstack result:

      "agent-shutdown-hook" prio=10 tid=0x00007f2e26419800 nid=0x333ae waiting on condition [0x0000000042c16000]

      java.lang.Thread.State: TIMED_WAITING (parking)

      at sun.misc.Unsafe.park(Native Method)

      • parking to wait for <0x00000000eaff3df8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)

      at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)

      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082)

      at java.util.concurrent.ThreadPoolExecutor.awaitTermination(ThreadPoolExecutor.java:1468)

      at java.util.concurrent.Executors$DelegatedExecutorService.awaitTermination(Executors.java:635)

      at org.apache.flume.node.PollingPropertiesFileConfigurationProvider.stop(PollingPropertiesFileConfigurationProvider.java:87)

      at org.apache.flume.lifecycle.LifecycleSupervisor.stop(LifecycleSupervisor.java:106)

      • locked <0x00000000eaf2daa0> (a org.apache.flume.lifecycle.LifecycleSupervisor)

      at org.apache.flume.node.Application.stop(Application.java:93)

      • locked <0x00000000eaf3c580> (a org.apache.flume.node.Application)

      at org.apache.flume.node.Application$1.run(Application.java:348)

      "conf-file-poller-0" prio=10 tid=0x00007f2e2e8cd000 nid=0x21819 waiting for monitor entry [0x0000000041e3f000]
      java.lang.Thread.State: BLOCKED (on object monitor)
      at org.apache.flume.node.Application.handleConfigurationEvent(Application.java:88)

      • waiting to lock <0x00000000eaf3c580> (a org.apache.flume.node.Application)

        Attachments

        1. flume-2786-v1.6.0.patch
          3 kB
          Yan Jian
        2. flume-2786-v1.6.0.patch.1
          6 kB
          Yan Jian
        3. flume-2786-v1.6.0.test.patch
          3 kB
          Yan Jian

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              • Assignee:
                Unassigned
                Reporter:
                godfreyhe godfrey he
              • Votes:
                1 Vote for this issue
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                Dates

                • Created:
                  Updated:
                  Resolved: