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  1. Giraph
  2. GIRAPH-1187

NPE in worker GC listener

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Critical
    • Resolution: Unresolved
    • Affects Version/s: 1.2.0
    • Fix Version/s: None
    • Component/s: graph
    • Labels:
      None
    • Environment:

      Giraph 1.2.0 running in M/R on Hadoop 2.6

      Description

      Likely the GC notification happened before any super step, in which case "

      gcTimeMetric" is not initialized at all. Here is stack trace:

       

      java.lang.NullPointerException at org.apache.giraph.graph.GraphTaskManager$1.handleNotification(GraphTaskManager.java:667) at sun.management.NotificationEmitterSupport.sendNotification(NotificationEmitterSupport.java:156) at sun.management.GarbageCollectorImpl.createGCNotification(GarbageCollectorImpl.java:143)

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            • Assignee:
              Unassigned
              Reporter:
              ruweih Randy Hu
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              Dates

              • Created:
                Updated: