[
https://issues.apache.org/jira/browse/MAPREDUCE-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13289020#comment-13289020
]
Mayank Bansal commented on MAPREDUCE-4305:
------------------------------------------
@Amar
Can you please please share the numbers for data locality which you are seeing?
I am running Tera sort for my benchmarking.
@Thomas
2-5% tasks are off rack and rest are rack local.
> Implement delay scheduling in capacity scheduler for improving data locality
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-4305
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4305
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Mayank Bansal
> Assignee: Mayank Bansal
>
> Capacity Scheduler data local tasks are about 40%-50% which is not good.
> While my test with 70 node cluster i consistently get data locality around
> 40-50% on a free cluster.
> I think we need to implement something like delay scheduling in the capacity
> scheduler for improving the data locality.
> http://radlab.cs.berkeley.edu/publication/308
> After implementing the delay scheduling on Hadoop 22 I am getting 100 % data
> locality in free cluster and around 90% data locality in busy cluster.
> Thanks,
> Mayank
--
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
