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Posted to yarn-issues@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2012/11/01 06:01:15 UTC

[jira] [Created] (YARN-192) Node update causes NPE in the fair scheduler

Sandy Ryza created YARN-192:
-------------------------------

             Summary: Node update causes NPE in the fair scheduler
                 Key: YARN-192
                 URL: https://issues.apache.org/jira/browse/YARN-192
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager, scheduler
    Affects Versions: 2.0.2-alpha
            Reporter: Sandy Ryza


The exception occurs when unreserve is called on an FSSchedulerApp with a NodeId that it does not know about.  The RM seems to have a different idea about what apps are reserved for which node than the scheduler.

2012-10-29 22:30:52,901 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type NODE_UPDATE to the scheduler
java.lang.NullPointerException
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerApp.unreserve(FSSchedulerApp.java:356)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AppSchedulable.unreserve(AppSchedulable.java:214)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AppSchedulable.assignContainer(AppSchedulable.java:266)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AppSchedulable.assignContainer(AppSchedulable.java:330)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueueSchedulable.assignContainer(FSQueueSchedulable.java:161)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.nodeUpdate(FairScheduler.java:759)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:836)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:329)
        at java.lang.Thread.run(Thread.java:662)
2012-10-29 22:30:52,903 INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Exiting, bbye..

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