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https://issues.apache.org/jira/browse/MAPREDUCE-4900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Binglin Chang updated MAPREDUCE-4900:
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Attachment: MAPREDUCE-4900-demo-with-JMX.v2.patch
fix bug, better handling the case that setting slot number is large than max
slot number.
> Dynamic configuration for task slots on TT
> ------------------------------------------
>
> Key: MAPREDUCE-4900
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4900
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: resourcemanager, tasktracker
> Affects Versions: 1.1.1
> Reporter: Junping Du
> Assignee: Binglin Chang
> Attachments: MAPREDUCE-4900-demo.patch,
> MAPREDUCE-4900-demo-with-JMX.patch, MAPREDUCE-4900-demo-with-JMX.v2.patch
>
>
> The current Hadoop MRV1 resource management logic assumes per node slot
> number is static during the lifetime of the TT process. Allowing run-time
> configuration on per node slot will give us finer granularity of resource
> elasticity. This allows Hadoop workloads to coexist with other workloads on
> the same hardware efficiently, whether or not the environment is virtualized.
> For more background or design details of this effort, please refer proposal
> in HADOOP-9165.
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