Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/2940#discussion_r19506451
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/receiver/ReceiverSupervisorImpl.scala
---
@@ -44,12 +41,26 @@ import
org.apache.spark.streaming.scheduler.RegisterReceiver
*/
private[streaming] class ReceiverSupervisorImpl(
receiver: Receiver[_],
- env: SparkEnv
+ env: SparkEnv,
+ hadoopConf: Configuration,
+ checkpointDirOption: Option[String]
) extends ReceiverSupervisor(receiver, env.conf) with Logging {
- private val blockManager = env.blockManager
+ private val receivedBlockHandler: ReceivedBlockHandler = {
+ if
(env.conf.getBoolean("spark.streaming.receiver.writeAheadLog.enable", false)) {
+ if (checkpointDirOption.isEmpty) {
+ throw new SparkException(
+ "Cannot enable receiver write-ahead log without checkpoint
directory set. " +
--- End diff --
Good point. This is something that requires changes at both spark as well
as spark streaming level, and probably further discussed, and hence deferred to
the next release deadline.
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