drcrallen commented on issue #6865: Densify swapped hll buffer URL: https://github.com/apache/incubator-druid/pull/6865#issuecomment-462481096 @leerho IMHO if data sketches are intended to be enterprise sketch support library, then I think the effort put into fixing the druid HLL sketch library should be minimal. I know we have effort internally to fix some of the accuracy issues in the existing HLL cardinality estimations. Beyond some high level fixes, if I had to choose between my team investing in fixing HLL fixes in the data format level, or finding a way to validate Data Sketches for enterprise sketching needs, I'd rather have time spent on Data Sketches validation and adoption since it has applications and impact outside of just Druid.
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