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  1. Hadoop YARN
  2. YARN-6448

Continuous scheduling thread crashes while sorting nodes

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 2.9.0, 3.0.0-alpha2
    • 2.9.0, 3.0.0-alpha4
    • None
    • None
    • Reviewed

    Description

      YARN-4719 remove the lock in continuous scheduling while sorting nodes. It breaks the order in comparison if nodes changes while sorting.

      2017-04-04 23:42:26,123 FATAL org.apache.hadoop.yarn.server.resourcemanager.RMCriticalThreadUncaughtExceptionHandler: Critical thread FairSchedulerContinuousScheduling crashed!
      java.lang.IllegalArgumentException: Comparison method violates its general contract!
              at java.util.TimSort.mergeHi(TimSort.java:899)
              at java.util.TimSort.mergeAt(TimSort.java:516)
              at java.util.TimSort.mergeForceCollapse(TimSort.java:457)
              at java.util.TimSort.sort(TimSort.java:254)
              at java.util.Arrays.sort(Arrays.java:1512)
              at java.util.ArrayList.sort(ArrayList.java:1454)
              at java.util.Collections.sort(Collections.java:175)
              at org.apache.hadoop.yarn.server.resourcemanager.scheduler.ClusterNodeTracker.sortedNodeList(ClusterNodeTracker.java:306)
              at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.continuousSchedulingAttempt(FairScheduler.java:884)
              at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler$ContinuousSchedulingThread.run(FairScheduler.java:316)
      

      Attachments

        1. YARN-6448.001.patch
          1 kB
          Yufei Gu
        2. YARN-6448.002.patch
          6 kB
          Yufei Gu
        3. YARN-6448.003.patch
          6 kB
          Yufei Gu
        4. YARN-6448.004.patch
          6 kB
          Yufei Gu

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            yufeigu Yufei Gu
            yufeigu Yufei Gu
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              Updated:
              Resolved:

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