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https://issues.apache.org/jira/browse/FLINK-7472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann resolved FLINK-7472.
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Resolution: Done
> Release task managers gracefully
> --------------------------------
>
> Key: FLINK-7472
> URL: https://issues.apache.org/jira/browse/FLINK-7472
> Project: Flink
> Issue Type: Sub-task
> Components: Cluster Management
> Reporter: Eron Wright
> Priority: Major
>
> When a task manager is no longer needed (e.g. due to idle timeout in slot
> manager), the RM should gracefully stop it without spurious warnings. This
> implies some actions should be taken before the TM is actually killed.
> Proactive steps include stopping the heartbeat monitor and sending a
> disconnect message.
> It is unclear whether `RM::closeTaskManagerConnection` method should be
> called proactively (when we plan to kill a TM), reactively (after the TM is
> killed), or both.
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