[jira] [Assigned] (SPARK-31494) flatten the result dataframe of ANOVATest

["zhengruifeng (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-31494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zhengruifeng reassigned SPARK-31494:
------------------------------------

    Assignee: zhengruifeng

> flatten the result dataframe of ANOVATest
> -----------------------------------------
>
>                 Key: SPARK-31494
>                 URL: https://issues.apache.org/jira/browse/SPARK-31494
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>    Affects Versions: 3.1.0
>            Reporter: zhengruifeng
>            Assignee: zhengruifeng
>            Priority: Minor
>
> add a new method
> {code:java}
> @Since("3.1.0")
> def test(
>     dataset: DataFrame,
>     featuresCol: String,
>     labelCol: String,
>     flatten: Boolean): DataFrame {code}
>  
> Similar to new {{test}} method in {{ChiSquareTest}}, it will:
> 1, support df operation on the returned df;
> 2, make driver no longer a bottleneck when dim is high



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