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https://issues.apache.org/jira/browse/HADOOP-10591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated HADOOP-10591:
--------------------------------------

    Target Version/s: 2.6.0  (was: 2.5.0)

> Compression codecs must used pooled direct buffers or deallocate direct 
> buffers when stream is closed
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10591
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10591
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Hari Shreedharan
>            Assignee: Colin Patrick McCabe
>         Attachments: HADOOP-10591.001.patch
>
>
> Currently direct buffers allocated by compression codecs like Gzip (which 
> allocates 2 direct buffers per instance) are not deallocated when the stream 
> is closed. Eventually for long running processes which create a huge number 
> of files, these direct buffers are left hanging till a full gc, which may or 
> may not happen in a reasonable amount of time - especially if the process 
> does not use a whole lot of heap.
> Either these buffers should be pooled or they should be deallocated when the 
> stream is closed.



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