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https://issues.apache.org/jira/browse/SPARK-6361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14377187#comment-14377187
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Apache Spark commented on SPARK-6361:
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User 'mengxr' has created a pull request for this issue:
https://github.com/apache/spark/pull/5151
> Support adding a column with metadata in DataFrames
> ---------------------------------------------------
>
> Key: SPARK-6361
> URL: https://issues.apache.org/jira/browse/SPARK-6361
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.3.0
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
>
> There is no easy way to add a column with metadata in DataFrames. This is
> required by ML transformers to generate ML attributes.
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