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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/11/27 12:50:00 UTC
[jira] [Assigned] (SPARK-22615) Handle more cases in
PropagateEmptyRelation
[ https://issues.apache.org/jira/browse/SPARK-22615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-22615:
------------------------------------
Assignee: Apache Spark
> Handle more cases in PropagateEmptyRelation
> --------------------------------------------
>
> Key: SPARK-22615
> URL: https://issues.apache.org/jira/browse/SPARK-22615
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Gengliang Wang
> Assignee: Apache Spark
>
> Currently, in the optimize rule `PropagateEmptyRelation`, the following cases is not handled:
> 1. right child is empty relation in left outer join
> 2. left child in right outer join
> 3. right child is empty relation in left semi join
> 4. right child is empty relation in left anti join
> case #1 and #2 can be treated as cross join and cause exception.
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