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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14407) DistCp - Introduce a configurable copy buffer size
Date Tue, 16 May 2017 04:47:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16011736#comment-16011736
] 

Yongjun Zhang commented on HADOOP-14407:
----------------------------------------

Hi [~omkarksa], 

Sorry for the delayed review, would you please update the patch to fix the issue reported
here
https://issues.apache.org/jira/browse/HADOOP-14407?focusedCommentId=16011312&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16011312

Thanks.



> DistCp - Introduce a configurable copy buffer size
> --------------------------------------------------
>
>                 Key: HADOOP-14407
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14407
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: tools/distcp
>    Affects Versions: 2.9.0
>            Reporter: Omkar Aradhya K S
>            Assignee: Omkar Aradhya K S
>             Fix For: 2.9.0, 3.0.0-alpha3
>
>         Attachments: HADOOP-14407.001.patch
>
>
> Currently, the RetriableFileCopyCommand has a fixed copy buffer size of just 8KB. We
have noticed in our performance tests that with bigger buffer sizes we saw upto ~3x performance
boost. Hence, making the copy buffer size a configurable setting via the new parameter <copybuffersize>.



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