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https://issues.apache.org/jira/browse/SPARK-14155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15225091#comment-15225091
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Reynold Xin commented on SPARK-14155:
-------------------------------------
We want to make UDTs actually work with Datasets, and we haven't had enough
time to think about it yet. So the proposal here is to hide it and then open
something up that could work with Datasets in 2.1.
> Hide UserDefinedType in Spark 2.0
> ---------------------------------
>
> Key: SPARK-14155
> URL: https://issues.apache.org/jira/browse/SPARK-14155
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 2.0.0
>
>
> UserDefinedType is a developer API in Spark 1.x.
> With very high probability we will create a new API for user-defined type
> that also works well with column batches as well as encoders (datasets). In
> Spark 2.0, let's make UserDefinedType private[spark] first.
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