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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/02/24 05:24:44 UTC
[jira] [Commented] (SPARK-19722) Clean up the usage of
EliminateSubqueryAliases
[ https://issues.apache.org/jira/browse/SPARK-19722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15881990#comment-15881990 ]
Apache Spark commented on SPARK-19722:
--------------------------------------
User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/17050
> 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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