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From "Sergey Murylev (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5918) LineRecordReader can return the same decompressor to CodecPool multiple times
Date Tue, 15 Jul 2014 05:46:06 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14061704#comment-14061704
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Sergey Murylev commented on MAPREDUCE-5918:
-------------------------------------------

Can anyone of committers review this bug fix?

> 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
>            Priority: Minor
>             Fix For: trunk
>
>         Attachments: MAPREDUCE-5918.1.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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