[jira] [Created] (FLINK-7444) Make external calls non-blocking

[Till Rohrmann (JIRA)]

Till Rohrmann created FLINK-7444:
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             Summary: 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


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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