https://community.cloudera.com/t5/Support-Questions/select-count-query-taking-more-time/m-p/225395#M187256 <P>if you are running query on tez then this will be useful to follow <A href="https://community.hortonworks.com/articles/22419/hive-on-tez-performance-tuning-determining-reducer.html" target="_blank">https://community.hortonworks.com/articles/22419/hive-on-tez-performance-tuning-determining-reducer.html</A></P> Thu, 14 Dec 2017 17:45:38 GMT rajkumar_singh 2017-12-14T17:45:38Z