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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4476) Enhance Union-All operator for dealing with empty left input or empty both inputs
Date Mon, 22 Aug 2016 08:56:20 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15430349#comment-15430349
] 

Khurram Faraaz commented on DRILL-4476:
---------------------------------------

Has this change been backed out of drill master ?

> 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
>             Fix For: 1.7.0
>
>
> 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.



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