zhengruifeng commented on issue #24727: [SPARK-27867][ML] RegressionEvaluator cache lastest RegressionMetrics to avoid duplicated computation URL: https://github.com/apache/spark/pull/24727#issuecomment-498162528 @srowen Though I still think this method one acceptable option when no breaking change is made, I am OK to close this PR. I will look into how to support multi-metrics computation...
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