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https://issues.apache.org/jira/browse/SPARK-7047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng resolved SPARK-7047.
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Resolution: Fixed
Fix Version/s: 1.4.0
Issue resolved by pull request 5914
[https://github.com/apache/spark/pull/5914]
> Model parent should be Optional
> -------------------------------
>
> Key: SPARK-7047
> URL: https://issues.apache.org/jira/browse/SPARK-7047
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 1.4.0
> Reporter: Joseph K. Bradley
> Assignee: Joseph K. Bradley
> Priority: Minor
> Fix For: 1.4.0
>
>
> Ensembles' component Models have no parents. Instead of making those values
> null, we should make them Options.
> For Python, "None" is probably the correct equivalent.
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