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Posted to mapreduce-dev@hadoop.apache.org by "Siddharth Seth (Created) (JIRA)" <ji...@apache.org> on 2011/11/15 06:29:51 UTC

[jira] [Created] (MAPREDUCE-3399) ContainerLocalizer should request new resources after completing the current one

ContainerLocalizer should request new resources after completing the current one
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                 Key: MAPREDUCE-3399
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3399
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: mrv2, nodemanager
    Affects Versions: 0.23.0
            Reporter: Siddharth Seth


Currently, the ContainerLocalizer to NM heartbeats to the NM every second. Not very significant, but this causes a ~4second delay in jobs (job jar, splits, etc). Instead, it should heartbeat to ask for additional resources to localize as soon as the previous one is localzied. There's already a TODO in the ContainerLocalizer for this.

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