hadoop-mapreduce-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-4399) Fix performance regression in shuffle
Date Fri, 20 Jul 2012 18:14:35 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Suresh Srinivas resolved MAPREDUCE-4399.

      Resolution: Fixed
    Hadoop Flags: Reviewed

I committed the patch to branch-1 and for 1.1.0. 

Thank you Luke for the patch. Thank you John Poelman and Shreyas Subramanya for noticing the
issue and verifying the fix.
> Fix performance regression in shuffle 
> --------------------------------------
>                 Key: MAPREDUCE-4399
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4399
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: performance, tasktracker
>    Affects Versions:, 1.0.3
>            Reporter: Luke Lu
>            Assignee: Luke Lu
>         Attachments: mapreduce-4399-branch-1.patch
> There is a significant (up to 3x) performance regression in shuffle (vs 0.20.2) in the
Hadoop 1.x series. Most noticeable with high-end switches.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


View raw message