[jira] [Commented] (FLINK-12122) Spread out tasks evenly across all available registered TaskManagers

["Ethan Li (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-12122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17002369#comment-17002369 ] 

Ethan Li commented on FLINK-12122:
----------------------------------

Is there any plan to backport this to 1.8?

> Spread out tasks evenly across all available registered TaskManagers
> --------------------------------------------------------------------
>
>                 Key: FLINK-12122
>                 URL: https://issues.apache.org/jira/browse/FLINK-12122
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Coordination
>    Affects Versions: 1.6.4, 1.7.2, 1.8.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.9.2, 1.10.0
>
>         Attachments: image-2019-05-21-12-28-29-538.png, image-2019-05-21-13-02-50-251.png
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> With Flip-6, we changed the default behaviour how slots are assigned to {{TaskManages}}. Instead of evenly spreading it out over all registered {{TaskManagers}}, we randomly pick slots from {{TaskManagers}} with a tendency to first fill up a TM before using another one. This is a regression wrt the pre Flip-6 code.
> I suggest to change the behaviour so that we try to evenly distribute slots across all available {{TaskManagers}} by considering how many of their slots are already allocated.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)