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Posted to issues@flink.apache.org by "Matthias (Jira)" <ji...@apache.org> on 2020/10/23 10:15:00 UTC

[jira] [Commented] (FLINK-11815) Support execution with static resources (Flip-6): E.g. spreading tasks across available set of TMs

    [ https://issues.apache.org/jira/browse/FLINK-11815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17219617#comment-17219617 ] 

Matthias commented on FLINK-11815:
----------------------------------

[~pnowojski] [~trohrmann] Does this issue still need to be kept open considering that the (only?) subtask is solved? It looks like it is idling for quite some time...

> Support execution with static resources (Flip-6): E.g. spreading tasks across available set of TMs
> --------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-11815
>                 URL: https://issues.apache.org/jira/browse/FLINK-11815
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.6.4, 1.7.2, 1.8.0
>            Reporter: Piotr Nowojski
>            Priority: Major
>
> FLIP-6 code path changed how tasks are distributed across the cluster which is causing problems in some scenarios. This issue intends to improve this.
> Known issues:
> 1. key groups are currently assigned randomly, ignoring their size. Previously larger key groups were evenly spread around the available task managers
> 2. if task slots are registered before slot request, the code have a tendency to group requests together on the same machine because we are using a LinkedHashMap
> 3. ???
> CC [~trohrmann@apache.org]



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