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Posted to common-dev@hadoop.apache.org by "Devaraj Das (JIRA)" <ji...@apache.org> on 2009/03/15 05:42:50 UTC

[jira] Commented: (HADOOP-5493) Shuffle copiers do not return Codecs back to the pool at the end of shuffling

    [ https://issues.apache.org/jira/browse/HADOOP-5493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12682126#action_12682126 ] 

Devaraj Das commented on HADOOP-5493:
-------------------------------------

I should that at this bug would affect only those jobs that have intermediate compression on.

> Shuffle copiers do not return Codecs back to the pool at the end of shuffling
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-5493
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5493
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>            Priority: Blocker
>             Fix For: 0.20.0
>
>
> At the end of shuffle, the copiers should return back the codecs to the pool. This doesn't happen and can potentially lead to a lot of memory leak on the reduce task (depending on how many shuffle copiers there are).

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