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https://issues.apache.org/jira/browse/MAPREDUCE-3601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Patrick Wendell updated MAPREDUCE-3601:
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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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