AlexanderSaydakov commented on issue #7297: thetaSketch aggrgator handle null or "" into unexpected value at ingesting URL: https://github.com/apache/incubator-druid/issues/7297#issuecomment-474460432 Theta sketch ignores nulls and empty strings. Are you sure your input is really empty, not, say, a strings with some spaces in them? Regarding the difference between Theta and HLL. You can chose the accuracy you wish. Assuming the same accuracy, HLL sketches are substantially smaller than Theta, but don't support set operations (intersection and set difference), and may be slower to merge (union).
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For additional commands, e-mail: commits-h...@druid.apache.org