Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/2065#discussion_r16549316
--- Diff:
external/flume/src/main/scala/org/apache/spark/streaming/flume/FlumePollingInputDStream.scala
---
@@ -144,6 +168,21 @@ private[streaming] class FlumePollingReceiver(
}
}
+ private def sendNack(batchReceived: Boolean, client:
SparkFlumeProtocol.Callback,
+ seq: CharSequence): Unit = {
+ Try {
+ if (batchReceived) {
+ // Let Flume know that the events need to be pushed back into the
channel.
+ logDebug("Sending nack for sequence number: " + seq)
+ client.nack(seq) // If the agent is down, even this could fail and
throw
+ logDebug("Nack sent for sequence number: " + seq)
+ }
+ }.recover({
+ case e: Exception => logError(
--- End diff --
nit: move everything to same line, or `logError(` to next line.
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