StefanRRichter opened a new pull request #9138: [FLINK-13249][runtime] Fix 
handling of partition producer responses b…
URL: https://github.com/apache/flink/pull/9138
 
 
   
   ## What is the purpose of the change
   
   This PR fixes the problem in FLINK-13249 by ensuring that processing the 
partition producer response is not blocking any netty thread, but is always 
executed by the task's executor.
   
   ## 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: (kind of)
     - 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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