[jira] [Commented] (HIVE-22455) Union branch removal rule does not kick in.
[ https://issues.apache.org/jira/browse/HIVE-22455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16967509#comment-16967509 ] Steve Carlin commented on HIVE-22455: - Yeah, that's what makes this one weird. [~jcamachorodriguez] noticed it didn't kick in after the Calcite upgrade in the union_assertion_type.q.out file. > Union branch removal rule does not kick in. > --- > > Key: HIVE-22455 > URL: https://issues.apache.org/jira/browse/HIVE-22455 > Project: Hive > Issue Type: Improvement >Reporter: Steve Carlin >Priority: Major > > After the Calcite upgrade to 1.21, there is a rule where 2 branches of a > union have limit 0. This can be simplified. > This can be found in: union_assertion_type.q.out -- This message was sent by Atlassian Jira (v8.3.4#803005)
[jira] [Commented] (HIVE-22455) Union branch removal rule does not kick in.
[ https://issues.apache.org/jira/browse/HIVE-22455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16967155#comment-16967155 ] Julian Hyde commented on HIVE-22455: There are a bunch of rules in Calcite's class PruneEmptyRules that recognize empty relational expressions and simplify accordingly. > Union branch removal rule does not kick in. > --- > > Key: HIVE-22455 > URL: https://issues.apache.org/jira/browse/HIVE-22455 > Project: Hive > Issue Type: Improvement >Reporter: Steve Carlin >Priority: Major > > After the Calcite upgrade to 1.21, there is a rule where 2 branches of a > union have limit 0. This can be simplified. > This can be found in: union_assertion_type.q.out -- This message was sent by Atlassian Jira (v8.3.4#803005)
