Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/6614#discussion_r31858270
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/receiver/ReceivedBlockHandler.scala
---
@@ -199,3 +220,15 @@ private[streaming] object
WriteAheadLogBasedBlockHandler {
new Path(checkpointDir, new Path("receivedData",
streamId.toString)).toString
}
}
+
+/**
+ * A utility that will wrap the Iterator to get the count
+ */
+private class CountingIterator[T: Manifest](iterator: Iterator[T]) extends
Iterator[T] {
+ var count = 0
+ def hasNext(): Boolean = iterator.hasNext
--- End diff --
Add a method
`def isFullyConsumed = !iterator.hasNext` and use that to detect whether
the block was completely consumed (that is, inserted into block manager) or
not.
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