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Posted to mapreduce-issues@hadoop.apache.org by "shenhong (JIRA)" <ji...@apache.org> on 2013/01/29 14:47:13 UTC

[jira] [Commented] (MAPREDUCE-1981) Improve getSplits performance by using listFiles, the new FileSystem API

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565366#comment-13565366 ] 

shenhong commented on MAPREDUCE-1981:
-------------------------------------

we hope this patch will check into trunk.
                
> Improve getSplits performance by using listFiles, the new FileSystem API
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1981
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1981
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: job submission
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>         Attachments: mapredListFiles1.patch, mapredListFiles2.patch, mapredListFiles3.patch, mapredListFiles4.patch, mapredListFiles5.patch, mapredListFiles.patch
>
>
> This jira will make FileInputFormat and CombinedFileInputForm to use the new API, thus reducing the number of RPCs to HDFS NameNode.

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