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https://issues.apache.org/jira/browse/SPARK-13630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15176811#comment-15176811
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Sunitha Kambhampati commented on SPARK-13630:
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Here is the pull request with changes:
https://github.com/apache/spark/pull/11480
> Add optimizer rule to collapse sorts
> ------------------------------------
>
> Key: SPARK-13630
> URL: https://issues.apache.org/jira/browse/SPARK-13630
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.6.0
> Reporter: Sunitha Kambhampati
> Fix For: 2.0.0
>
>
> It is possible to collapse adjacent sorts and keep the last one. This
> task is to add optimizer rule to collapse adjacent sorts if possible.
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