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      Currently, the AsyncWaitOperator::processElement() is running in the main task thread and blocks in addAsyncBufferEntry() when adding a new element in the full StreamElementQueue.

      The blocking of the main task thread prevents progress of mailbox events handling. The approach via FLINK-13248 may help process the events while queue is full.

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              • Assignee:
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                Reporter:
                srichter Stefan Richter
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