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https://issues.apache.org/jira/browse/MAPREDUCE-2429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13060229#comment-13060229
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Todd Lipcon commented on MAPREDUCE-2429:
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The version of this patch on 0.20-security seems to have a bug in that it
doesn't call task.setJvmContext() until after the syncLogs call, etc. Thus, if
syncLogs fails, jvmContext is still null, and the status update will have null
Jvmcontext, causing NPE. The patch against trunk seems to have fixed this by
calling setJvmContext at the top.
> Check jvmid during task status report
> -------------------------------------
>
> Key: MAPREDUCE-2429
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2429
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.21.0, 0.22.0, 0.23.0
> Reporter: Arun C Murthy
> Assignee: Siddharth Seth
> Fix For: 0.20.204.0, 0.23.0
>
> Attachments: MR2429-1.patch, MR2429.patch, MR2429_trunk.patch
>
>
> Currently TT doens't check to ensure jvmid is relevant during communication
> with the Child via TaskUmbilicalProtocol.
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