[ https://issues.apache.org/jira/browse/SPARK-19271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiao Li resolved SPARK-19271. ----------------------------- Resolution: Fixed Assignee: Zhenhua Wang Fix Version/s: 2.2.0 > Change non-cbo estimation of aggregate > -------------------------------------- > > Key: SPARK-19271 > URL: https://issues.apache.org/jira/browse/SPARK-19271 > Project: Spark > Issue Type: Sub-task > Components: SQL > Reporter: Zhenhua Wang > Assignee: Zhenhua Wang > Fix For: 2.2.0 > > > Change non-cbo estimation behavior of aggregate: > If groupExpression is empty, we can know row count (=1) and the corresponding > size; > otherwise, estimation falls back to UnaryNode's computeStats method, which > should not propagate rowCount and attributeStats in Statistics because they > are not estimated in that method. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org