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From "Sergey Murylev (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5918) LineRecordReader can return the same decompressor to CodecPool multiple times
Date Wed, 12 Nov 2014 09:50:34 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Murylev updated MAPREDUCE-5918:
--------------------------------------
    Attachment: MAPREDUCE-5918.3.patch

> 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, MAPREDUCE-5918.3.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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