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https://issues.apache.org/jira/browse/MAPREDUCE-2961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated MAPREDUCE-2961:
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Status: Open (was: Patch Available)
Forgot about this one.
It is easy to set the number of threads dynamically. We just need to set it
equal to the number of nodes in the system. We are looking at a scalability of
10,000 nodes, so I'd put a cap of 2000 threads, hardcoded.
> Increase the default threadpool size for container launching in the
> application master.
> ---------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2961
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2961
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Mahadev konar
> Assignee: Mahadev konar
> Priority: Blocker
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-2961.patch, MAPREDUCE-2961.patch
>
>
> Currently the default threadpool size is 10 for launching containers in
> ContainerLauncherImpl. We should increase that to 100 for a reasonable
> default, so that container launching is not backed up by a small thread pool
> size.
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