sunithabeeram commented on issue #4087: Upgrade RoaringBitmap to 0.8.0
URL: https://github.com/apache/incubator-pinot/pull/4087#issuecomment-482725417
 
 
   I didn't check the backward compatibility part (I am assuming we have 
generated indexes in atleast one of our tests), however, I was recently looking 
into the performance of a query against one of our tables; It had a huge IN 
clause and also had a couple of NOT IN clauses following this format:
   
   SELECT count(col) from table where col1 IN "<100+ values>" and col2 NOT IN 
"<2 values>" and col3 NOT IN "<10+values>" 
   
   The base latency of this query was ~450ms. With only updating to 
roaringbitmap 0.8.0, I see that the latency drops to ~70ms. Thats pretty neat.
   
   The mileage across other queries might vary.

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