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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4059) The history server should have a separate pluggable storage/query interface
Date Tue, 10 Apr 2012 16:35:18 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13250793#comment-13250793
] 

Hadoop QA commented on MAPREDUCE-4059:
--------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12522112/MR-4059.txt
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 7 new or modified test files.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed unit tests in .

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2183//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2183//console

This message is automatically generated.
                
> The history server should have a separate pluggable storage/query interface
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4059
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4059
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv2
>    Affects Versions: 0.24.0, 0.23.3
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>         Attachments: MR-4059.txt, MR-4059.txt, MR-4059.txt, MR-4059.txt, MR-4059.txt,
MR-4059.txt, MR-4059.txt
>
>
> The history server currently caches all parsed jobs in RAM.  These jobs can be very large
because of counters.  It would be nice to have a pluggable interface for the cacheing and
querying of the cached data so that we can play around with different implementations.  Also
just for cleanness of the code it would be nice to split the very large JobHistoryServer.java
into a few smaller ones that are more understandable and readable.

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