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From "Mayank Bansal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4305) Implement delay scheduling in capacity scheduler for improving data locality
Date Fri, 01 Jun 2012 22:15:22 GMT
Mayank Bansal created MAPREDUCE-4305:
----------------------------------------

             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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