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https://issues.apache.org/jira/browse/SPARK-11011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng resolved SPARK-11011.
-----------------------------------
Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 11379
[https://github.com/apache/spark/pull/11379]
> UserDefinedType serialization should be strongly typed
> ------------------------------------------------------
>
> Key: SPARK-11011
> URL: https://issues.apache.org/jira/browse/SPARK-11011
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.5.0, 1.5.1
> Reporter: John Muller
> Priority: Minor
> Labels: UDT
> Fix For: 2.0.0
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> UDT's serialize method takes an Any rather than the actual type parameter.
> The issue lies in CatalystTypeConverters convertToCatalyst(a: Any): Any
> method, which pattern matches against a hardcoded list of built-in SQL types.
> Planned fix is to allow the UDT to supply the CatalystTypeConverter to use
> via a new public method on the abstract class UserDefinedType that allows the
> implementer to strongly type those conversions
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