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Posted to mapreduce-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2015/01/30 18:10:35 UTC

[jira] [Commented] (MAPREDUCE-6235) Bundle and compress files passed with -libjars prior to uploading and distributing

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14298883#comment-14298883 ] 

Allen Wittenauer commented on MAPREDUCE-6235:
---------------------------------------------

jars are already in zip format, so I'm not sure we're going to get much benefit from compression.

> Bundle and compress files passed with -libjars prior to uploading and distributing
> ----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6235
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6235
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: distributed-cache, mrv2
>    Affects Versions: 2.6.0
>            Reporter: Dustin Cote
>            Assignee: Dustin Cote
>            Priority: Minor
>
> To improve performance, we should upload jars flagged by -libjars as a single bundle and expand on arrival instead of uploading the jars one by one.   This would also reduce network overhead of using the -libjars option.



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