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https://issues.apache.org/jira/browse/SPARK-6911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14494558#comment-14494558
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Apache Spark commented on SPARK-6911:
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User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/5513
> API for access MapType in DataFrame
> -----------------------------------
>
> Key: SPARK-6911
> URL: https://issues.apache.org/jira/browse/SPARK-6911
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Davies Liu
> Assignee: Davies Liu
> Priority: Critical
>
> We should have a API to access items in MapType in a DataFrame.
> Also, we should improve the Python API to access items for ArrayType and
> StructType.
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