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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4400) Fix performance regression for small jobs/workflows
Date Thu, 23 Aug 2012 23:24:42 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt Foley updated MAPREDUCE-4400:
----------------------------------

    Fix Version/s:     (was: 1.1.1)
                   1.1.0

Due to delay in 1.1.0, brought this into 1.1.0 from 1.1.1.
                
> Fix performance regression for small jobs/workflows
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-4400
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4400
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: performance, task
>    Affects Versions: 0.20.203.0, 1.0.3
>            Reporter: Luke Lu
>            Assignee: Luke Lu
>             Fix For: 1.1.0
>
>         Attachments: mapreduce-4400-branch-1.patch
>
>
> There is a significant performance regression for small jobs/workflows (vs 0.20.2) in
the Hadoop 1.x series. Most noticeable with Hive and Pig jobs. PigMix has an average 40% regression
against 0.20.2.

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