Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/2065#discussion_r16511729
--- Diff:
external/flume-sink/src/main/scala/org/apache/spark/streaming/flume/sink/TransactionProcessor.scala
---
@@ -115,7 +122,7 @@ private class TransactionProcessor(val channel:
Channel, val seqNum: String,
ByteBuffer.wrap(event.getBody)))
gotEventsInThisTxn = true
case None =>
- if (!gotEventsInThisTxn) {
+ if (!gotEventsInThisTxn && !stopped) {
logDebug("Sleeping for " + backOffInterval + " millis as
no events were read in" +
" the current transaction")
TimeUnit.MILLISECONDS.sleep(backOffInterval)
--- End diff --
Since you're changing `shutdownNow()` to `shutdown()` in
SparkAvroCallbackHandler.scala, I'd suggest creating a dummy object and use
`Object.wait()` here, and `Object.notifyAll()` in the shutdown method above, so
that sleeping tasks are woken up.
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