Zhiyuan Yang created HIVE-16082:
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             Summary: Allow user to change number of listener thread in 
LlapTaskCommunicator
                 Key: HIVE-16082
                 URL: https://issues.apache.org/jira/browse/HIVE-16082
             Project: Hive
          Issue Type: Bug
            Reporter: Zhiyuan Yang
            Assignee: Zhiyuan Yang


Now LlapTaskCommunicator always has same number of RPC listener thread with 
TezTaskCommunicatorImpl. There are scenarios when we want them different: for 
example, in Llap only mode, we want less TezTaskCommunicatorImpl's listener 
thread to reduce off-heap memory usage.



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