zhengruifeng opened a new pull request #27979: [SPARK-31138][ML][FOLLOWUP] ANOVA optimization URL: https://github.com/apache/spark/pull/27979 ### What changes were proposed in this pull request? 1, remove unused var `numFeatures`; 2, remove the computation of `numSamples` and `numClasses`, since they can be directly infered by `counts: Map[Double, Long]` ### Why are the changes needed? remove a unnecessary job to compute `numSamples` and `numClasses` ### Does this PR introduce any user-facing change? No ### How was this patch tested? existing testsuites
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