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https://issues.apache.org/jira/browse/MAPREDUCE-5918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14206219#comment-14206219
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Ravi Prakash commented on MAPREDUCE-5918:
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Hi Sergey!
I'm sorry I haven't found the cycles to make changes to the CodecPool myself.
If you can, I'd be happy to +1 and commit it. Please feel free to do it in this
ticket / a new ticket, however you feel most comfortable.
> LineRecordReader can return the same decompressor to CodecPool multiple times
> -----------------------------------------------------------------------------
>
> Key: MAPREDUCE-5918
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5918
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.3.0
> Reporter: Sergey Murylev
> Assignee: Sergey Murylev
> Fix For: trunk
>
> Attachments: MAPREDUCE-5918.1.patch, MAPREDUCE-5918.2.patch
>
>
> LineRecordReader can return the same decompressor to CodecPool multiple times
> if method close() called multiple times. In this case CodecPool doesn't
> guarantee that it always return different decompressors. This issue can cause
> some difficult reproducible and difficult diagnosable bugs in Hadoop based
> programs.
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