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https://issues.apache.org/jira/browse/HADOOP-4967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das resolved HADOOP-4967.
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Resolution: Fixed
Fix Version/s: 0.21.0
0.20.0
0.19.1
Hadoop Flags: [Reviewed]
I just committed this.
> Inconsistent state in JVM manager
> ---------------------------------
>
> Key: HADOOP-4967
> URL: https://issues.apache.org/jira/browse/HADOOP-4967
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Amareshwari Sriramadasu
> Assignee: Devaraj Das
> Fix For: 0.19.1, 0.20.0, 0.21.0
>
> Attachments: 4967.patch
>
>
> The following is the scenario:
> -> TT got a LaunchTaskAction. And It found the slot free. It started the
> TaskRunner
> -> TT received KillJobActtion. It did a runner.kill().
> But, runner.kill() didn't remove JVM Runner from jvmIdToRunner , as it is not
> polulated yet.
> It released the slots.
> -> TaskRunner thread spawned jvm and populated jvmIdToRunner.
> -> The next task getting launched on the slot finds it as busy.
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