[jira] [Commented] (TEZ-2478) Move OneToOne routing to store events in Tasks

["Siddharth Seth (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-2478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556483#comment-14556483 ] 

Siddharth Seth commented on TEZ-2478:
-------------------------------------

bq. Not sure why this is so urgently needed as to target 0.7.1.
Think this was discussed quite a bit on 776 and in the offline discussions. There is an unnecessary perf penalty from using ODR for OneToOne - more than 50% higher CPU. The processing on the central dispatcher is trivial - adding to a list vs sending to a single task.

I'll work on this later today, or early next week and post a patch. Hoping it's fairly straightforward - pulling in OneToOne from earlier.

> Move OneToOne routing to store events in Tasks
> ----------------------------------------------
>
>                 Key: TEZ-2478
>                 URL: https://issues.apache.org/jira/browse/TEZ-2478
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>         Attachments: 1-1-wip.patch
>
>




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