[jira] [Created] (FLINK-11417) Make access to ExecutionGraph single threaded from JobMaster main thread

["Stefan Richter (JIRA)" <ji...@apache.org>]

Stefan Richter created FLINK-11417:
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             Summary: Make access to ExecutionGraph single threaded from JobMaster main thread
                 Key: FLINK-11417
                 URL: https://issues.apache.org/jira/browse/FLINK-11417
             Project: Flink
          Issue Type: Sub-task
          Components: Distributed Coordination
            Reporter: Stefan Richter
            Assignee: Stefan Richter


To simplify future developments in scheduling, we should re-design the threading model for interaction with the {{ExecutionGraph}} and its sub-components to a single threaded approach. In this model, expensive tasks will still be performed by background threads so that the JM main thread will never block. However, all resulting modifications and interaction with the EG itself should only go through the JM main thread.



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