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https://issues.apache.org/jira/browse/SPARK-9828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng resolved SPARK-9828.
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Resolution: Fixed
Fix Version/s: 1.5.0
Issue resolved by pull request 8110
[https://github.com/apache/spark/pull/8110]
> Should not share `{}` among instances
> -------------------------------------
>
> Key: SPARK-9828
> URL: https://issues.apache.org/jira/browse/SPARK-9828
> Project: Spark
> Issue Type: Bug
> Components: ML, PySpark
> Affects Versions: 1.4.1, 1.5.0
> Reporter: Xiangrui Meng
> Assignee: Manoj Kumar
> Priority: Critical
> Fix For: 1.5.0
>
>
> We use `{}` as the initial value in some places, e.g.,
> https://github.com/apache/spark/blob/master/python/pyspark/ml/param/__init__.py#L64.
> This makes instances sharing the same param map.
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