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Posted to mapreduce-issues@hadoop.apache.org by "Tom White (JIRA)" <ji...@apache.org> on 2012/07/26 20:17:34 UTC

[jira] [Updated] (MAPREDUCE-4488) Port MAPREDUCE-463 (The job setup and cleanup tasks should be optional) to branch-1

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tom White updated MAPREDUCE-4488:
---------------------------------

    Attachment: MAPREDUCE-4488.patch

For some jobs the setup and cleanup tasks are not needed, so they can be skipped. With this patch applied, I ran

{noformat}
bin/hadoop jar hadoop-*examples*jar sleep -D mapred.committer.job.setup.cleanup.needed=false -m 1 -r 1 -mt 1 -rt 1
{noformat}

(along with the changes in MAPREDUCE-4487) and the mean time across 10 runs was 6.051s (sd 0.81).
                
> Port MAPREDUCE-463 (The job setup and cleanup tasks should be optional) to branch-1
> -----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4488
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4488
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: mrv1, performance
>    Affects Versions: 1.0.3
>            Reporter: Tom White
>            Assignee: Tom White
>         Attachments: MAPREDUCE-4488.patch
>
>


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