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https://issues.apache.org/jira/browse/SPARK-22005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weichen Xu updated SPARK-22005:
-------------------------------
    Issue Type: Sub-task  (was: New Feature)
        Parent: SPARK-21086

>       CrossValidator, TrainValidationSplit dump sub models to disk when 
> fitting: Python API
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-22005
>                 URL: https://issues.apache.org/jira/browse/SPARK-22005
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML
>    Affects Versions: 2.3.0
>            Reporter: Weichen Xu
>
> We add a parameter indicating whether to persist models to disk during 
> training (default = off). This will use ML persistence to dump models to a 
> directory so they are available later but do not consume memory.
> Note: when persisting the model list, use indices as the sub-model path



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