zhengruifeng created SPARK-31494:
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Summary: 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
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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