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Devaraj K commented on MAPREDUCE-1950: -------------------------------------- As per jetty defect [JETTY-1251|http://jira.codehaus.org/browse/JETTY-1251], it is fixed in 6.1.25 version. Can we upgrade to Jetty 6.1.25 or later version? > Jetty Acceptor can stuck TaskTracker forever > -------------------------------------------- > > Key: MAPREDUCE-1950 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1950 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: tasktracker > Affects Versions: 0.20.1 > Reporter: Scott Chen > Assignee: Scott Chen > > 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. > {code} > 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) > {code} -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira