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https://issues.apache.org/jira/browse/MAPREDUCE-2490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13037042#comment-13037042
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Jonathan Eagles commented on MAPREDUCE-2490:
--------------------------------------------

This most recent patch version still logs the black/gray counts, but has also 
added some debug info at the caller to better aid in debug the root cause in 
the case for debugging black/gray list failures. The gridmix contrib test 
failure is unrelated to my change. No new unit tests were add due to the nature 
of this change (only affects logging).

> Log blacklist debug count
> -------------------------
>
>                 Key: MAPREDUCE-2490
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2490
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobtracker
>    Affects Versions: 0.20.204.0, 0.22.0
>            Reporter: Jonathan Eagles
>            Assignee: Jonathan Eagles
>            Priority: Trivial
>         Attachments: MAPREDUCE-2490-branch-0.20-security-v2.patch, 
> MAPREDUCE-2490-branch-0.20-security.patch, MAPREDUCE-2490-trunk-v2.patch, 
> MAPREDUCE-2490-trunk.patch
>
>
> Gain some insight into blacklist increments/decrements by enhancing the debug 
> logging

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