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  1. Hadoop YARN
  2. YARN-192

Node update causes NPE in the fair scheduler

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.2-alpha
    • Fix Version/s: None
    • Component/s: resourcemanager, scheduler
    • Labels:
      None

      Description

      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..

        Attachments

        1. YARN-192-1.patch
          6 kB
          Sandy Ryza
        2. YARN-192-1.patch
          6 kB
          Sandy Ryza
        3. YARN-192.patch
          5 kB
          Sandy Ryza

          Activity

            People

            • Assignee:
              sandyr Sandy Ryza
              Reporter:
              sandyr Sandy Ryza
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              Dates

              • Created:
                Updated:
                Resolved: