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https://issues.apache.org/jira/browse/SPARK-16075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon updated SPARK-16075:
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Labels: bulk-closed (was: )
> Make VectorUDT/MatrixUDT singleton under spark.ml package
> ---------------------------------------------------------
>
> Key: SPARK-16075
> URL: https://issues.apache.org/jira/browse/SPARK-16075
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 2.0.0
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
> Priority: Major
> Labels: bulk-closed
>
> Both VectorUDT and MatrixUDT are implemented as normal classes and their
> could be multiple instances of it, which makes the equality checking and
> pattern matching harder to implement. Even the APIs are private, switching to
> a singleton pattern could simplify the development.
> Required changes:
> * singleton VectorUDT/MatrixUDT (created by VectorUDT.getOrCreate)
> * update UDTRegistration
> * update code generation to support singleton UDTs
> * update existing code to use getOrCreate
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