Sean Hsuan-Yi Chu created DRILL-4476: ----------------------------------------
Summary: Enhance Union-All operator for dealing with empty left input or empty both inputs Key: DRILL-4476 URL: https://issues.apache.org/jira/browse/DRILL-4476 Project: Apache Drill Issue Type: Bug Components: Execution - Relational Operators Reporter: Sean Hsuan-Yi Chu Assignee: Sean Hsuan-Yi Chu Union-All operator does not deal with the situation where left side comes from empty source. Due to DRILL-2288's enhancement for empty sources, Union-All operator now can be allowed to support this scenario. -- This message was sent by Atlassian JIRA (v6.3.4#6332)