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https://issues.apache.org/jira/browse/HADOOP-9165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540329#comment-13540329
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Binglin Chang commented on HADOOP-9165:
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Hi Vinod,
I don't think TT changes is complicated, in fact TT can be unchanged, and only
some small changes in JT can do the trick. I post a initial patch in
MAPREDUCE-4900 to demonstrate this.
> Dynamic Resource/Slot Configuration on NM/TT
> --------------------------------------------
>
> Key: HADOOP-9165
> URL: https://issues.apache.org/jira/browse/HADOOP-9165
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Junping Du
> Attachments: Elastic Resources for Hadoop-draft v0.1.pdf
>
>
> The current Hadoop MRV1/YARN resource management logic assumes per node
> (TT/NM) resource is static during the lifetime of the TT/NM process. Allowing
> run-time configuration on per node resource 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.
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