Josh Rosen created SPARK-47121:
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             Summary: Avoid noisy RejectedExecutionExceptions during 
StandaloneSchedulerBackend shutdown
                 Key: SPARK-47121
                 URL: https://issues.apache.org/jira/browse/SPARK-47121
             Project: Spark
          Issue Type: Improvement
          Components: Scheduler
    Affects Versions: 3.5.0
            Reporter: Josh Rosen
            Assignee: Josh Rosen


While it is in the process of shutting down, the StandaloneSchedulerBackend 
might throw RejectedExecutionExceptions when RPC handler `onDisconnected` 
methods attempt to submit new tasks to a stopped executorDelayRemoveThread 
executor service. We can reduce log and uncaught exception noise by catching 
and ignoring these exceptions if they occur during shudown.



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