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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-19722) Clean up the usage of EliminateSubqueryAliases
Date Fri, 24 Feb 2017 05:24:44 GMT

     [ https://issues.apache.org/jira/browse/SPARK-19722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-19722:
------------------------------------

    Assignee: Xiao Li  (was: Apache Spark)

> Clean up the usage of EliminateSubqueryAliases
> ----------------------------------------------
>
>                 Key: SPARK-19722
>                 URL: https://issues.apache.org/jira/browse/SPARK-19722
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.2.0
>            Reporter: Xiao Li
>            Assignee: Xiao Li
>            Priority: Minor
>
> In the PR https://github.com/apache/spark/pull/11403, we introduced the function `canonicalized`
for eliminating useless subqueries. We can simply replace the call of rule `EliminateSubqueryAliases`
by the function `canonicalized`.   
> After we changed the view resolution and management, the current reason why we keep `EliminateSubqueryAliases
` in optimizer becomes out-of-dated. Thus, we also should update the reason to `eager analysis
of Dataset`. 



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