diff options
Diffstat (limited to 'streaming')
| -rw-r--r-- | streaming/src/main/scala/org/apache/spark/streaming/dstream/UnionDStream.scala | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/streaming/src/main/scala/org/apache/spark/streaming/dstream/UnionDStream.scala b/streaming/src/main/scala/org/apache/spark/streaming/dstream/UnionDStream.scala index 57429a1532..abbc40befa 100644 --- a/streaming/src/main/scala/org/apache/spark/streaming/dstream/UnionDStream.scala +++ b/streaming/src/main/scala/org/apache/spark/streaming/dstream/UnionDStream.scala @@ -28,17 +28,10 @@ private[streaming] class UnionDStream[T: ClassTag](parents: Array[DStream[T]]) extends DStream[T](parents.head.ssc) { - if (parents.length == 0) { - throw new IllegalArgumentException("Empty array of parents") - } - - if (parents.map(_.ssc).distinct.size > 1) { - throw new IllegalArgumentException("Array of parents have different StreamingContexts") - } - - if (parents.map(_.slideDuration).distinct.size > 1) { - throw new IllegalArgumentException("Array of parents have different slide times") - } + require(parents.length > 0, "List of DStreams to union is empty") + require(parents.map(_.ssc).distinct.size == 1, "Some of the DStreams have different contexts") + require(parents.map(_.slideDuration).distinct.size == 1, + "Some of the DStreams have different slide durations") override def dependencies = parents.toList |