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[SPARK-22899][ML][Streaming] Fix OneVsRestModel transform on streaming data failed. #20077

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[SPARK-22899][ML][Streaming] Fix OneVsRestModel transform on streaming data failed. #20077

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@WeichenXu123
WeichenXu123 committed Dec 25, 2017
commit 12161007f99bb6db630d47e6d1918b5641fc05a3
2 changes: 1 addition & 1 deletion mllib/src/main/scala/org/apache/spark/ml/classification/OneVsRest.scala
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Expand Up @@ -165,7 +165,7 @@ final class OneVsRestModel private[ml] (
val newDataset = dataset.withColumn(accColName, initUDF())

// persist if underlying dataset is not persistent.
val handlePersistence = dataset.storageLevel == StorageLevel.NONE
val handlePersistence = !dataset.isStreaming && dataset.storageLevel == StorageLevel.NONE
if (handlePersistence) {
newDataset.persist(StorageLevel.MEMORY_AND_DISK)
}
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