Rajesh Balamohan created TEZ-1157:
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             Summary: Optimize broadcast :- Tasks pertaining to same job in 
same machine should not download multiple copies of broadcast data
                 Key: TEZ-1157
                 URL: https://issues.apache.org/jira/browse/TEZ-1157
             Project: Apache Tez
          Issue Type: Sub-task
            Reporter: Rajesh Balamohan
            Assignee: Rajesh Balamohan


Currently tasks (belonging to same job) running in the same machine download 
its own copy of broadcast data.  Optimization could be to  download one copy in 
the machine, and the rest of the tasks can refer to this downloaded copy.



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