[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&focusedCommentId=16967509#comment-16967509 ] Steve Carlin commented on HIVE-22455: - Yeah, that's what makes this one weird.  [~jca

[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&focusedCommentId=16967155#comment-16967155 ] Julian Hyde commented on HIVE-22455: There are a bunch of rules in Calcite's class Pr