[jira] [Updated] (FLINK-11551) Allow RpcEndpoints to execute asynchronous stop operations

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

     [ https://issues.apache.org/jira/browse/FLINK-11551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-11551:
-----------------------------------
    Labels: pull-request-available  (was: )

> Allow RpcEndpoints to execute asynchronous stop operations
> ----------------------------------------------------------
>
>                 Key: FLINK-11551
>                 URL: https://issues.apache.org/jira/browse/FLINK-11551
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination
>    Affects Versions: 1.7.1, 1.8.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.8.0
>
>
> Some {{RpcEndpoints}} would benefit from being able to run asynchronous stop operations in the main thread executor. At the moment, this is not possible since {{RpcEndpoint#postStop}} is called by by {{UntypedActor#postStop}} which is the last call for an actor.
> I suggest to introduce a new method {{RpcEndpoint#onStop}} which is executed when the {{RpcEndpoint}} is requested to terminate. Internally, this method will be called when the {{UntypedActor}} is still running, thus, allowing to execute arbitrary other messages (e.g. asynchronous operations in the main thread executor). Only after the future returned by {{onStop}} is completed, the underlying {{UntypedActor}} will shut down.



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