If you are interested on rolling up SUM and Count then you output raw data as is and "druid.query.granularity"="HOUR" (FYI not segment granularity) will do the rollup for you. If you want to compute other rollups metrics like using MIN/MAX/AVG etc then you need to do the rollup before. If you share an example of your use cases i can help explaining more. Thanks. ... View more