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Posted to hdfs-issues@hadoop.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2016/01/23 06:48:39 UTC

[jira] [Commented] (HDFS-7694) FSDataInputStream should support "unbuffer"

    [ https://issues.apache.org/jira/browse/HDFS-7694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15113588#comment-15113588 ] 

Ted Yu commented on HDFS-7694:
------------------------------

Is there compatibility concern for backporting this to 2.6 branch ?

Thanks

> FSDataInputStream should support "unbuffer"
> -------------------------------------------
>
>                 Key: HDFS-7694
>                 URL: https://issues.apache.org/jira/browse/HDFS-7694
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.7.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>             Fix For: 2.7.0
>
>         Attachments: HDFS-7694.001.patch, HDFS-7694.002.patch, HDFS-7694.003.patch, HDFS-7694.004.patch, HDFS-7694.005.patch
>
>
> For applications that have many open HDFS (or other Hadoop filesystem) files, it would be useful to have an API to clear readahead buffers and sockets.  This could be added to the existing APIs as an optional interface, in much the same way as we added setReadahead / setDropBehind / etc.



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