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From "shenhong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-301) Fairscheduler appear to concurrentModificationException and RM crash
Date Tue, 01 Jan 2013 05:42:12 GMT
shenhong created YARN-301:
-----------------------------

             Summary: Fairscheduler appear to concurrentModificationException and RM crash
                 Key: YARN-301
                 URL: https://issues.apache.org/jira/browse/YARN-301
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager, scheduler
            Reporter: shenhong
             Fix For: 2.0.3-alpha


In my test cluster, fairscheduler appear to concurrentModificationException and RM crash,
 here is the message:

2012-12-30 17:14:17,171 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Error in handling event type NODE_UPDATE to the scheduler
java.util.ConcurrentModificationException
        at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1100)
        at java.util.TreeMap$KeyIterator.next(TreeMap.java:1154)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AppSchedulable.assignContainer(AppSchedulable.java:297)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSLeafQueue.assignContainer(FSLeafQueue.java:181)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.nodeUpdate(FairScheduler.java:780)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:842)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:98)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:340)
        at java.lang.Thread.run(Thread.java:662)



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