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Posted to issues@tez.apache.org by "Kuhu Shukla (JIRA)" <ji...@apache.org> on 2017/08/02 15:58:00 UTC

[jira] [Commented] (TEZ-3810) TezCounter for idle time in shuffle phase

    [ https://issues.apache.org/jira/browse/TEZ-3810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111142#comment-16111142 ] 

Kuhu Shukla commented on TEZ-3810:
----------------------------------

Thanks [~aramesh2] for the patch!
I haven't fully reviewed this patch, but I think we will need an equivalent change in ShuffleScheduler as well (which is the shuffle-r for the ordered case).

> TezCounter for idle time in shuffle phase
> -----------------------------------------
>
>                 Key: TEZ-3810
>                 URL: https://issues.apache.org/jira/browse/TEZ-3810
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Ashwin Ramesh
>         Attachments: TEZ-3810-001.patch
>
>
>  A task attempt counter that tracks how much time was spent waiting for inputs in the shuffle phase. We can use this to quickly identify jobs that are wasting a lot of time on the grid with idle reducer tasks instead of shuffling/merging.



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