[GitHub] tillrohrmann opened a new pull request #7756: [FLINK-11357] Make ExecutionGraph#suspend terminate ExecutionGraph atomically

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tillrohrmann opened a new pull request #7756: [FLINK-11357] Make ExecutionGraph#suspend terminate ExecutionGraph atomically
URL: https://github.com/apache/flink/pull/7756
 
 
   ## What is the purpose of the change
   
   This commit makes the suspend call transition the ExecutionGraph atomically into the
   SUSPENDED state without requiring a round-trip to cancel all task properly. Instead it
   simply notifies the TaskExecutors about the suspension and then transitions the Executions
   into a terminal state. Moreover, this commit removes JobStatus#SUSPENDING.
   
   This PR is based on #7755.
   
   ## Brief change log
   
   - Introduce `Execution#suspend` which transition all non terminal states except for `RECONCILING` directly into `CANCELED`
   - Add `ExecutionVertex#suspend` and `ExecutionJobVertex#suspend` to forward suspend calls to `Execution`
   - Update `ExecutionGraph#suspend` to make sure that suspend happens atomically
   
   ## Verifying this change
   
   - Updated the `ExecutionGraphSuspendTest`
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no)
     - The serializers: (no)
     - The runtime per-record code paths (performance sensitive): (no)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes)
     - The S3 file system connector: (no)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (no)
     - If yes, how is the feature documented? (not applicable)
   

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