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https://issues.apache.org/jira/browse/MAPREDUCE-708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sreekanth Ramakrishnan updated MAPREDUCE-708:
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Attachment: MAPREDUCE-708-1.patch
Attaching patch fixing the issue pointed out by Ramya.
Patch removes the condition which checks if the TT was already blacklisted for
the same reason and ignore further processing.
Added test case to verify the error messages were changed even if the reason is
same.
> node health check script does not refresh the "reason for blacklisting"
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-708
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-708
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.21.0
> Reporter: Ramya R
> Assignee: Sreekanth Ramakrishnan
> Priority: Minor
> Fix For: 0.21.0
>
> Attachments: MAPREDUCE-708-1.patch
>
>
> After MAPREDUCE-211, the node health check script does not refresh the
> "reason for blacklisting".
> The steps to reproduce the issue are:
> * Blacklist a TT with an error message 'x'
> * Change the health check script to return an error message 'y'
> * The "reason for blacklisting" still shows 'x'
>
> The impact of this issue is that the feature fails to trap transient errors.
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