Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/6614#discussion_r31658272
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/receiver/ReceiverSupervisorImpl.scala
---
@@ -136,14 +136,18 @@ private[streaming] class ReceiverSupervisorImpl(
metadataOption: Option[Any],
blockIdOption: Option[StreamBlockId]
) {
+ var rBlock = receivedBlock
val blockId = blockIdOption.getOrElse(nextBlockId)
val numRecords = receivedBlock match {
case ArrayBufferBlock(arrayBuffer) => arrayBuffer.size
+ case IteratorBlock(iterator) =>
+ var arrayBuffer = ArrayBuffer(iterator.toArray : _*)
--- End diff --
I don't know that it's safe to copy the iterator contents into memory here.
I don't think it's worth it for the UI.
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