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https://issues.apache.org/jira/browse/SPARK-17956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15578136#comment-15578136
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Apache Spark commented on SPARK-17956:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/15500
> ProjectExec has incorrect outputOrdering property
> -------------------------------------------------
>
> Key: SPARK-17956
> URL: https://issues.apache.org/jira/browse/SPARK-17956
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Liang-Chi Hsieh
>
> Currently ProjectExec simply takes child plan's outputOrdering as its
> outputOrdering. In some cases, this leads to incorrect outputOrdering. This
> applies to TakeOrderedAndProjectExec too.
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