snleee commented on pull request #8074:
URL: https://github.com/apache/pinot/pull/8074#issuecomment-1022866328


   -1 on changing the default behavior. As @richardstartin mentioned, we should 
not change the default behavior because t the clients do expect the exact 
result when they run `distinctcount`.
   
   Meanwhile, if the user is educated enough to know how to configure hll 
threshold, (`DISTINCTCOUNT(myCol, 'hllLog2m=8;hllConversionThreshold=10')`), 
why not ask them to use `distinctcounthll` directly?


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