leerho commented on issue #7161: Indicating time trends in topN results URL: https://github.com/apache/incubator-druid/issues/7161#issuecomment-485228883 @leventov BTW, I have checked into DataSketches/sketches-core a new sketch I have specifically developed with this issue in mind for Druid. It is called Frequent Distinct Tuples (FDT Sketch. I would appreciate it if someone could experiment with it. So now there are 2 sketches we have to help Druid deal with “TopN” issues. This plus the FIS Sketch. I can make myself available for a short tutorial if anyone is interested on how to get started.
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