Github user shaolinliu commented on the issue:

    https://github.com/apache/spark/pull/17581
  
    My opinion is:
    In the production, the user often select without a limit, often lead to 
service offline,this is a general situation, so increase the parameters. 
    When SQLConf.THRIFTSERVER_INCREMENTAL_COLLECT is open, the process is :  
beeline[get] -> hs2[get] -> executor[ret] -> hs2[ret] ->beeline[ret] ....
    and in the process,the executor's resource is occupied, and when it it 
close,the process is:
     beeline[get] -> hs2[collect] -> beeline[ret].
     similar to the redis's pipeline to enhance performance, and reducing the 
time will reduce resources too.


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