[
https://issues.apache.org/jira/browse/MAPREDUCE-3568?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vinod Kumar Vavilapalli updated MAPREDUCE-3568:
-----------------------------------------------
Hadoop Flags: Reviewed
Status: Patch Available (was: Open)
> Optimize Job's progress calculations in MR AM
> ---------------------------------------------
>
> Key: MAPREDUCE-3568
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3568
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mr-am, mrv2, performance
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3568-20111215.1.txt,
> MAPREDUCE-3568-20111220.txt, MAPREDUCE-3568-20111222.txt,
> MAPREDUCE-3568-20111227.txt
>
>
> Besides catering to client requests, Job progress is calculated in every
> heartbeat to the RM so as to print the MR AM's progress. Today the map and
> reduce progresses are calculated by looking up of each task in a big map
> while we can simply make do with a scan and aggregate. With large number of
> tasks, this can make a difference.
--
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
