[jira] [Updated] (FLINK-18760) Redundant task managers should be released when there's no job running in session cluster

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-18760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-18760:
-----------------------------------
    Labels: pull-request-available  (was: )

> Redundant task managers should be released when there's no job running in session cluster
> -----------------------------------------------------------------------------------------
>
>                 Key: FLINK-18760
>                 URL: https://issues.apache.org/jira/browse/FLINK-18760
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.12.0
>            Reporter: Xintong Song
>            Assignee: Liu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.12.0
>
>
> In FLINK-18625, we introduced redundant task managers, as backup resources for speeding up job recovery in cases of task manager lost.
> For a session cluster, when there's no job running, it would be better to not keep such redundant resources. Currently, Flink session cluster will not request redundant task managers until a job is submitted, but it also will not release redundant task managers after all jobs terminated.
> This ticket proposes to check and release task managers if there are redundant task managers only.



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