[ https://issues.apache.org/jira/browse/IMPALA-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tim Armstrong updated IMPALA-2581: ---------------------------------- Issue Type: Improvement (was: Bug) > Push down "LIMIT" when possible > -------------------------------- > > Key: IMPALA-2581 > URL: https://issues.apache.org/jira/browse/IMPALA-2581 > Project: IMPALA > Issue Type: Improvement > Components: Frontend > Affects Versions: Impala 2.5.0 > Reporter: Jim Apple > Priority: Minor > Labels: performance > > In a table t with a column x with no null values, "SELECT DISTINCT x FROM t > LIMIT 1" should be roughly instant. Instead, it finds *all* the distinct > values, then returns one of them. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org