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https://issues.apache.org/jira/browse/SPARK-5288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14295765#comment-14295765
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Xiangrui Meng commented on SPARK-5288:
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+1 on the use case [~prudenko] metnioned. [~rxin] If we only keep leaf types,
we should provide methods to validate a group of types, e.g., whether a type
could be casted to Double.
> Stabilize Spark SQL data type API followup
> -------------------------------------------
>
> Key: SPARK-5288
> URL: https://issues.apache.org/jira/browse/SPARK-5288
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Yin Huai
> Assignee: Yin Huai
>
> Several issues we need to address before release 1.3
> * Do we want to make all classes in
> org.apache.spark.sql.types.dataTypes.scala public? Seems we do not need to
> make those abstract classes public.
> * Seems NativeType is not a very clear and useful concept. Should we just
> remove it?
> * We need to Stabilize the type hierarchy of our data types. Seems StringType
> and Decimal Type should not be primitive types.
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