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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CHUKWA-650) Re-configure Demux ReduceNumber without re-starting the DemuxManager service
Date Wed, 01 Aug 2012 02:32:35 GMT

    [ https://issues.apache.org/jira/browse/CHUKWA-650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426289#comment-13426289
] 

Hudson commented on CHUKWA-650:
-------------------------------

Integrated in Chukwa-trunk #455 (See [https://builds.apache.org/job/Chukwa-trunk/455/])
    CHUKWA-650. Re-configure Demux ReduceNumber without re-starting the DemuxManager service.
Contributed by Jie Huang (Revision 1367839)

     Result = FAILURE
asrabkin : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1367839
Files : 
* /incubator/chukwa/trunk/CHANGES.txt
* /incubator/chukwa/trunk/src/main/java/org/apache/hadoop/chukwa/extraction/demux/DemuxManager.java

                
> Re-configure Demux ReduceNumber without re-starting the DemuxManager service
> ----------------------------------------------------------------------------
>
>                 Key: CHUKWA-650
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-650
>             Project: Chukwa
>          Issue Type: Improvement
>          Components: Data Processors
>    Affects Versions: 0.6.0
>            Reporter: Jie Huang
>            Assignee: Jie Huang
>         Attachments: chukwa-650.patch
>
>
> Currently, DemuxManager controls the Demux's reduce number by reading "CHUKWA_DEMUX_REDUCER_COUNT_FIELD"
at the initialization part. It is impossible to tune that reduce number before the next round
of demux happens. The only way is to restart that DemuxManager service. I wonder if it is
OK to parse that configuration item in  runDemux() function.

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