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Posted to mapreduce-issues@hadoop.apache.org by "Patrick Wendell (Updated) (JIRA)" <ji...@apache.org> on 2012/01/04 01:50:39 UTC
[jira] [Updated] (MAPREDUCE-3601) Add Delay Scheduling to MR2 Fair
Scheduler
[ https://issues.apache.org/jira/browse/MAPREDUCE-3601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Patrick Wendell updated MAPREDUCE-3601:
---------------------------------------
Attachment: MAPREDUCE-3601.v1.patch
Attached is a patch to implement delay scheduling in MR2, similar to how delay scheduling works in the MR1 Fair Scheduler.
This patch allows schedulers to triage locality levels from node-local, to rack-local, to off-switch requests over time. In the Fair schedulers, users can configure a threshold to dictate when this relaxation happens.
The Capacity Scheduler is left untouched (it currently uses a separate heuristic to failover to off-switch scheduling).
This patch assumes the patch attached to MAPREDUCE-3600 has already been applied.
> Add Delay Scheduling to MR2 Fair Scheduler
> ------------------------------------------
>
> Key: MAPREDUCE-3601
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3601
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: scheduler
> Reporter: Patrick Wendell
> Assignee: Patrick Wendell
> Attachments: MAPREDUCE-3601.v1.patch
>
>
> JIRA for delay scheduling component.
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