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-rw-r--r--core/src/main/scala/org/apache/spark/rdd/RDD.scala4
1 files changed, 2 insertions, 2 deletions
diff --git a/core/src/main/scala/org/apache/spark/rdd/RDD.scala b/core/src/main/scala/org/apache/spark/rdd/RDD.scala
index 5fcef255e1..10610f4b6f 100644
--- a/core/src/main/scala/org/apache/spark/rdd/RDD.scala
+++ b/core/src/main/scala/org/apache/spark/rdd/RDD.scala
@@ -434,11 +434,11 @@ abstract class RDD[T: ClassTag](
* @return A random sub-sample of the RDD without replacement.
*/
private[spark] def randomSampleWithRange(lb: Double, ub: Double, seed: Long): RDD[T] = {
- this.mapPartitionsWithIndex { case (index, partition) =>
+ this.mapPartitionsWithIndex( { (index, partition) =>
val sampler = new BernoulliCellSampler[T](lb, ub)
sampler.setSeed(seed + index)
sampler.sample(partition)
- }
+ }, preservesPartitioning = true)
}
/**