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From "Jonathan Eagles (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TEZ-3222) Reduce messaging overhead for auto-reduce parallelism case
Date Thu, 21 Apr 2016 20:35:12 GMT
Jonathan Eagles created TEZ-3222:
------------------------------------

             Summary: Reduce messaging overhead for auto-reduce parallelism case
                 Key: TEZ-3222
                 URL: https://issues.apache.org/jira/browse/TEZ-3222
             Project: Apache Tez
          Issue Type: Bug
            Reporter: Jonathan Eagles
            Assignee: Jonathan Eagles


A dag with 15k x 1000k vertex may auto-reduce to 15k x 1. And while the data  size is appropriate
for 1 task attempt, this results in an increase in task attempt message processing of 1000x.

This jira aims to reduce the message processing in the auto-reduced task while keeping the
amount of message processing in the AM the same or less.



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