You are viewing a plain text version of this content. The canonical link for it is here.
Posted to mapreduce-issues@hadoop.apache.org by "Suresh Srinivas (JIRA)" <ji...@apache.org> on 2012/07/20 20:14:35 UTC
[jira] [Resolved] (MAPREDUCE-4399) Fix performance regression in
shuffle
[ 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: 0.20.203.0, 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