Github user devaraj-kavali commented on the issue: https://github.com/apache/spark/pull/13072 MesosClusterDispatcher also has multiple threads like Executor, when any one thread terminates in the MesosClusterDispatcher process due to some error/exception it keeps running without performing the terminated thread functionality. I think we need to handle those uncaught exceptions from the MesosClusterDispatcher process threads using the UncaughtExceptionHandler and take the action instead of running the MesosClusterDispatcher without performing the functionality and without notifying the user.
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