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Posted to dev@flink.apache.org by "Stephan Ewen (Jira)" <ji...@apache.org> on 2021/09/21 08:03:00 UTC

[jira] [Created] (FLINK-24343) Revisit Scheduler and Coordinator Startup Procedure

Stephan Ewen created FLINK-24343:
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             Summary: Revisit Scheduler and Coordinator Startup Procedure
                 Key: FLINK-24343
                 URL: https://issues.apache.org/jira/browse/FLINK-24343
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.13.2, 1.14.0
            Reporter: Stephan Ewen
             Fix For: 1.15.0


We need to re-examine the startup procedure of the scheduler, and how it interacts with the startup of the operator coordinators.

We need to make sure the following conditions are met:
  - The Operator Coordinators are started before the first action happens that they need to be informed of. That includes as task being ready, a checkpoint happening, etc.

  - The scheduler must be started to the point that it can handle "failGlobal()" calls, because the coordinators might trigger that during their startup when an exception in "start()" occurs.

/cc [~chesnay]



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