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https://issues.apache.org/jira/browse/MAPREDUCE-1915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12987911#action_12987911
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Konstantin Shvachko commented on MAPREDUCE-1915:
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+1 I liked the test case. Please assign it to 0.22 as a bug fix.
> IndexCache - getIndexInformation - check reduce index Out Of Bounds
> -------------------------------------------------------------------
>
> Key: MAPREDUCE-1915
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1915
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.20.1, 0.20.2, 0.20.3, 0.21.0, 0.22.0
> Reporter: Rares Vernica
> Priority: Trivial
> Attachments: MAPREDUCE-1915.patch, MAPREDUCE-1915_1.patch
>
>
> When checking if the "reduce" index is out of bounds the check should be
> info.mapSpillRecord.size() <= reduce
> instead of:
> info.mapSpillRecord.size() < reduce
> Not a big bug since an Out Of Bounds is thrown downstream anyway.
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