diff options
Diffstat (limited to 'mllib')
| -rw-r--r-- | mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala b/mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala index b139bc8dcb..b07a68269c 100644 --- a/mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala +++ b/mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala @@ -108,6 +108,7 @@ class CrossValidator extends Estimator[CrossValidatorModel] with CrossValidatorP // multi-model training logDebug(s"Train split $splitIndex with multiple sets of parameters.") val models = est.fit(trainingDataset, epm).asInstanceOf[Seq[Model[_]]] + trainingDataset.unpersist() var i = 0 while (i < numModels) { val metric = eval.evaluate(models(i).transform(validationDataset, epm(i)), map) @@ -115,6 +116,7 @@ class CrossValidator extends Estimator[CrossValidatorModel] with CrossValidatorP metrics(i) += metric i += 1 } + validationDataset.unpersist() } f2jBLAS.dscal(numModels, 1.0 / map(numFolds), metrics, 1) logInfo(s"Average cross-validation metrics: ${metrics.toSeq}") |