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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1950

Jetty Acceptor can stuck TaskTracker forever

    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 0.20.1
    • Fix Version/s: None
    • Component/s: tasktracker
    • Labels:
      None

      Description

      We have observed some TaskTrackers keep getting blacklisted because of "Too many fetch-failure" and the logs are full of the following exception.
      There can be lots of these exceptions in one millisecond.

      2010-07-19 15:00:00,146 ERROR org.mortbay.log: EXCEPTION
      java.nio.channels.ClosedSelectorException
              at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:66)
              at sun.nio.ch.SelectorImpl.selectNow(SelectorImpl.java:88)
              at org.mortbay.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:630)
              at org.mortbay.io.nio.SelectorManager.doSelect(SelectorManager.java:191)
              at org.mortbay.jetty.nio.SelectChannelConnector.accept(SelectChannelConnector.java:124)
              at org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:708)
              at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
      

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              • Assignee:
                schen Scott Chen
                Reporter:
                schen Scott Chen
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                Dates

                • Created:
                  Updated: