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Posted to common-dev@hadoop.apache.org by "Devaraj Das (JIRA)" <ji...@apache.org> on 2008/11/06 02:46:46 UTC

[jira] Assigned: (HADOOP-4595) JVM Reuse triggers RuntimeException("Invalid state")

     [ https://issues.apache.org/jira/browse/HADOOP-4595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Devaraj Das reassigned HADOOP-4595:
-----------------------------------

    Assignee: Devaraj Das

> JVM Reuse triggers RuntimeException("Invalid state")
> ----------------------------------------------------
>
>                 Key: HADOOP-4595
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4595
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.19.0
>            Reporter: Aaron Kimball
>            Assignee: Devaraj Das
>
> 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.

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