[SPARK-31492][ML] flatten the result dataframe of FValueTest #28268
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Test build #121496 has finished for PR 28268 at commit
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Merged to master |
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What changes were proposed in this pull request?
add a new method
def test(dataset: DataFrame, featuresCol: String, labelCol: String, flatten: Boolean): DataFrameWhy are the changes needed?
Similar to new test method in ChiSquareTest, it will:
1, support df operation on the returned df;
2, make driver no longer a bottleneck with large
numFeaturesDoes this PR introduce any user-facing change?
Yes, add a new method
How was this patch tested?
existing testsuites