Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/1195#discussion_r15502546
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/receiver/Receiver.scala ---
@@ -147,12 +179,34 @@ abstract class Receiver[T](val storageLevel:
StorageLevel) extends Serializable
executor.pushIterator(dataIterator, Some(metadata), None)
}
+ /**
+ * Store an iterator of received data as a data block into Spark's
memory.
+ * The metadata will be associated with this block of data
+ * for being used in the corresponding InputDStream. The callback is
+ * called when the data is safely stored. This callback can be used to
commit transactions
+ * with systems from which data is being sent etc.
+ */
+ @Experimental
+ def storeReliably(dataIterator: java.util.Iterator[T], metadata: Any,
+ callback: Option[() => Unit]) {
--- End diff --
https://github.com/apache/spark/tree/master/core/src/main/java/org/apache/spark/api/java/function
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