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https://issues.apache.org/jira/browse/SPARK-16448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15367972#comment-15367972
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Apache Spark commented on SPARK-16448:
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User 'cloud-fan' has created a pull request for this issue:
https://github.com/apache/spark/pull/14106
> RemoveAliasOnlyProject should not remove alias with metadata
> ------------------------------------------------------------
>
> Key: SPARK-16448
> URL: https://issues.apache.org/jira/browse/SPARK-16448
> Project: Spark
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: Wenchen Fan
> Assignee: Wenchen Fan
>
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