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Posted to mapreduce-dev@hadoop.apache.org by "Mayank Bansal (JIRA)" <ji...@apache.org> on 2012/06/02 00:15:22 UTC

[jira] [Created] (MAPREDUCE-4305) Implement delay scheduling in capacity scheduler for improving data locality

Mayank Bansal created MAPREDUCE-4305:
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             Summary: Implement delay scheduling in capacity scheduler for improving data locality
                 Key: MAPREDUCE-4305
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4305
             Project: Hadoop Map/Reduce
          Issue Type: New Feature
            Reporter: Mayank Bansal
            Assignee: Mayank Bansal


Capacity Scheduler data local tasks are about 40%-50% which is not good.
While my test with 70 node cluster i consistently get data locality around 40-50% on a free cluster.

I think we need to implement something like delay scheduling in the capacity scheduler for improving the data locality.
http://radlab.cs.berkeley.edu/publication/308

After implementing the delay scheduling on Hadoop 22 I am getting 100 % data locality in free cluster and around 90% data locality in busy cluster.

Thanks,
Mayank

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