You're right Charles, the HLL result is approximate; If you want to get accurate result, the "bitmap" count distinct measure can fulfill.
2017-01-01 12:35 GMT+08:00 howchoy <[email protected]>: > After further research, I think it's because the measure SELLER_CNT_HLL is > set to hll(10) (Error Rate < 9.75%). Please validate my finding. Thank you. > > > -- > View this message in context: http://apache-kylin.74782.x6. > nabble.com/Anomaly-in-Aggregation-tp6808p6809.html > Sent from the Apache Kylin mailing list archive at Nabble.com. > -- Best regards, Shaofeng Shi 史少锋
