[jira] [Comment Edited] (FLINK-18690) Implement LocalInputPreferredSlotSharingStrategy

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

    [ https://issues.apache.org/jira/browse/FLINK-18690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17168531#comment-17168531 ] 

Zhu Zhu edited comment on FLINK-18690 at 7/31/20, 8:47 AM:
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There are known limitations of LocalInputPreferredSlotSharingStrategy which can lead to suboptimal results of ExecutionSlotSharingGroup creation.


was (Author: zhuzh):
There are known limitations of LocalInputPreferredSlotSharingStrategy which leads to suboptimal results of ExecutionSlotSharingGroup creation.

> Implement LocalInputPreferredSlotSharingStrategy
> ------------------------------------------------
>
>                 Key: FLINK-18690
>                 URL: https://issues.apache.org/jira/browse/FLINK-18690
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Coordination
>            Reporter: Andrey Zagrebin
>            Assignee: Zhu Zhu
>            Priority: Major
>              Labels: pull-request-available
>
> Implement ExecutionSlotSharingGroup, SlotSharingStrategy and default LocalInputPreferredSlotSharingStrategy.
> The default strategy would be LocalInputPreferredSlotSharingStrategy. It will try to reduce remote data exchanges. Subtasks, which are connected and belong to the same SlotSharingGroup, tend to be put in the same ExecutionSlotSharingGroup.
> See [design doc|https://docs.google.com/document/d/10CbCVDBJWafaFOovIXrR8nAr2BnZ_RAGFtUeTHiJplw/edit#heading=h.t4vfmm4atqoy]



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