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  1. Hadoop Common
  2. HADOOP-4595

JVM Reuse triggers RuntimeException("Invalid state")

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.19.0
    • Fix Version/s: 0.19.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      A Reducer triggers the following exception:

      08/11/05 08:58:50 INFO mapred.JobClient: Task Id : attempt_200811040110_0230_r_000008_1, Status : FAILED
      java.lang.RuntimeException: Inconsistent state!!! JVM Manager reached an unstable state while reaping a JVM for task: attempt_200811040110_0230_r_000008_1 Number of active JVMs:2
      JVMId jvm_200811040110_0230_r_-735233075 #Tasks ran: 0 Currently busy? true Currently running: attempt_200811040110_0230_r_000012_0
      JVMId jvm_200811040110_0230_r_-1716942642 #Tasks ran: 0 Currently busy? true Currently running: attempt_200811040110_0230_r_000040_0
      at java.lang.Throwable.<init>(Throwable.java:67)
      at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.reapJvm(JvmManager.java:245)
      at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.access$000(JvmManager.java:113)
      at org.apache.hadoop.mapred.JvmManager.launchJvm(JvmManager.java:78)
      at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:410)

      Other clues:

      In the three reduce task attempts where this was observed, this was attempt _1. Attempt _0 had started and eventually switches to "SUCCEEDED." So I think this is happening only on speculatively-executed reduce task attempts. The reduce output (part-XXXXX) gets lost when this attempt fails, even though the other (earlier) attempt succeeded.

        Attachments

        1. 4595.patch
          7 kB
          Devaraj Das

          Activity

            People

            • Assignee:
              ddas Devaraj Das
              Reporter:
              kimballa Aaron Kimball
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              Dates

              • Created:
                Updated:
                Resolved: