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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-931) rumen should use its own interpolation classes to create runtimes for simulated tasks
Date Thu, 17 Sep 2009 02:32:57 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756336#action_12756336
] 

Hadoop QA commented on MAPREDUCE-931:
-------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12419830/MAPREDUCE-931--2009-09-16--1633.patch
  against trunk revision 815628.

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +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 findbugs.  The patch does not introduce any new Findbugs warnings.

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

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/92/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/92/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/92/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/92/console

This message is automatically generated.

> rumen should use its own interpolation classes to create runtimes for simulated tasks
> -------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-931
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-931
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Dick King
>            Assignee: Dick King
>            Priority: Minor
>         Attachments: MAPREDUCE-931--2009-09-16--1633.patch, patch-931-b.patch
>
>
> Currently, when a simulator or benchmark is running and simulating hadoop jobs using
rumen data, and rumen's runtime system is used to get execution times for the tasks in the
simulated jobs, rumen would use some ad hoc code, despite the fact that rumen has a perfectly
good interpolation framework to generate random variables that fit discrete CDFs.
> We should use the interpolation framework.

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