srowen commented on a change in pull request #24717: [SPARK-27847][ML] One-Pass
MultilabelMetrics & MulticlassMetrics
URL: https://github.com/apache/spark/pull/24717#discussion_r288142248
##########
File path:
mllib/src/main/scala/org/apache/spark/mllib/evaluation/RegressionMetrics.scala
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@@ -59,7 +59,7 @@ class RegressionMetrics @Since("2.0.0") (
/**
* Use MultivariateOnlineSummarizer to calculate summary statistics of
observations and errors.
*/
- private lazy val summary: MultivariateStatisticalSummary = {
+ private val summary: MultivariateStatisticalSummary = {
Review comment:
Because this hasn't been 'optimized', should this be changed? I
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