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From "Till Rohrmann (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7444) Make external calls non-blocking
Date Thu, 17 Aug 2017 09:13:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16130133#comment-16130133
] 

Till Rohrmann commented on FLINK-7444:
--------------------------------------

I agree that the {{FatalErrorHandler}} should be executed directly as you've said and I will
change the PR accordingly. All other external calls (e.g. the {{OnCompletionActions}}), will
remain being executed asynchronously since I think this is more bullet-proof.

> Make external calls non-blocking
> --------------------------------
>
>                 Key: FLINK-7444
>                 URL: https://issues.apache.org/jira/browse/FLINK-7444
>             Project: Flink
>          Issue Type: Bug
>          Components: Distributed Coordination
>    Affects Versions: 1.4.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>              Labels: flip-6
>
> All external calls from a {{RpcEndpoint}} can be potentially blocking, e.g. calls to
the {{FatalErrorHandler}}. Therefore, I propose to make all these calls coming from the {{RpcEndpoint's}}
main thread non-blocking by running them in an {{Executor}}. That way the main thread will
never be blocked.



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