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Posted to issues@tez.apache.org by "Jonathan Eagles (JIRA)" <ji...@apache.org> on 2016/04/21 22:35:12 UTC

[jira] [Created] (TEZ-3222) Reduce messaging overhead for auto-reduce parallelism case

Jonathan Eagles created TEZ-3222:
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             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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