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https://issues.apache.org/jira/browse/YARN-1572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14391363#comment-14391363
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Kareem El Gebaly commented on YARN-1572:
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I agree with solution.
It affects version 2.3.0 as well, any patch/ solution found yet?
> Low chance to hit NPE issue in AppSchedulingInfo#allocateNodeLocal
> ------------------------------------------------------------------
>
> Key: YARN-1572
> URL: https://issues.apache.org/jira/browse/YARN-1572
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Affects Versions: 2.2.0
> Reporter: Wenwu Peng
> Assignee: Wenwu Peng
> Attachments: YARN-1572-log.tar.gz, conf.tar.gz, log.tar.gz
>
>
> we have lower chance to hit NPE in allocateNodeLocal when run benchmark(hit
> 4 in 20 times).
> {code}
> 2014-07-31 04:18:19,653 INFO
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode:
> Assigned container container_1406794589275_0001_01_000021 of capacity
> <memory:1024, vCores:1> on host datanode10:57281, which has 6 containers,
> <memory:6144, vCores:6> used and <memory:2048, vCores:2> available after
> allocation
> 2014-07-31 04:18:19,654 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.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:311)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:268)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp.allocate(FiCaSchedulerApp.java:136)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.assignContainer(FifoScheduler.java:683)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.assignNodeLocalContainers(FifoScheduler.java:602)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.assignContainersOnNode(FifoScheduler.java:560)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.assignContainers(FifoScheduler.java:488)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.nodeUpdate(FifoScheduler.java:729)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.handle(FifoScheduler.java:774)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.handle(FifoScheduler.java:101)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:599)
> at java.lang.Thread.run(Thread.java:662)
> 2014-07-31 04:18:19,655 INFO
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Exiting, bbye..
> {code}
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