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-rw-r--r--streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingJobProgressListener.scala2
1 files changed, 1 insertions, 1 deletions
diff --git a/streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingJobProgressListener.scala b/streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingJobProgressListener.scala
index c086df47d9..61f852a0d3 100644
--- a/streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingJobProgressListener.scala
+++ b/streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingJobProgressListener.scala
@@ -259,7 +259,7 @@ private[streaming] class StreamingJobProgressListener(ssc: StreamingContext)
// We use an Iterable rather than explicitly converting to a seq so that updates
// will propagate
val outputOpIdToSparkJobIds: Iterable[OutputOpIdAndSparkJobId] =
- Option(batchTimeToOutputOpIdSparkJobIdPair.get(batchTime).asScala)
+ Option(batchTimeToOutputOpIdSparkJobIdPair.get(batchTime)).map(_.asScala)
.getOrElse(Seq.empty)
_batchUIData.outputOpIdSparkJobIdPairs = outputOpIdToSparkJobIds
}