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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2009/09/01 01:38:32 UTC

[jira] Commented: (MAPREDUCE-931) rumen should use its own interpolation classes to create runtimes for simulated tasks

    [ https://issues.apache.org/jira/browse/MAPREDUCE-931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12749677#action_12749677 ] 

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

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12418191/patch-931.patch
  against trunk revision 808730.

    +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 patch.  The patch command could not apply the patch.

Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/28/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: patch-931.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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