WeichenXu123 commented on a change in pull request #32399:
URL: https://github.com/apache/spark/pull/32399#discussion_r629789015
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File path: mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala
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@@ -183,11 +190,28 @@ class CrossValidator @Since("1.2.0") (@Since("1.4.0")
override val uid: String)
}
// Wait for metrics to be calculated
- val foldMetrics = foldMetricFutures.map(ThreadUtils.awaitResult(_,
Duration.Inf))
-
- // Unpersist training & validation set once all metrics have been
produced
- trainingDataset.unpersist()
- validationDataset.unpersist()
+ val foldMetrics = try {
+ foldMetricFutures.map(ThreadUtils.awaitResult(_, Duration.Inf))
+ }
+ catch {
+ case e: Throwable =>
+ subTaskFailed = true
+ try {
+ Thread.sleep(1000)
Review comment:
https://github.com/apache/spark/pull/32399#discussion_r629087709
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