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Posted to issues@tez.apache.org by "Jonathan Eagles (JIRA)" <ji...@apache.org> on 2016/04/21 23:02:13 UTC

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

     [ https://issues.apache.org/jira/browse/TEZ-3222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Eagles updated TEZ-3222:
---------------------------------
    Attachment: TEZ-3222.1.patch

> 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
>         Attachments: TEZ-3222.1.patch
>
>
> 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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