TisonKun commented on issue #9832: [FLINK-11843] Bind lifespan of Dispatcher to 
leader session
URL: https://github.com/apache/flink/pull/9832#issuecomment-543040672
 
 
   > Since we fence different leader epoch with different Dispatcher instance, 
I think `waitForTerminatingJobManager` should be only used in closing the 
former instance, i.e., `onStop`. Anywhere else especially submission and 
recovery should not be care about it.
   > 
   > I'll give this PR a full pass today and tomorrow.
   
   Nevertheless, it could be a follow up we retry on a job manager runner 
non-fatal failure. Currently we conceptually use one for all restart strategy 
that one job manager runner failure cause the whole dispatcher on fatal error.

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