Github user chtyim commented on a diff in the pull request:
https://github.com/apache/twill/pull/16#discussion_r94688058
--- Diff:
twill-core/src/main/java/org/apache/twill/internal/kafka/client/SimpleKafkaConsumer.java
---
@@ -273,17 +274,19 @@ private MessageCallback wrapCallback(final
MessageCallback callback,
final AtomicBoolean stopped = new AtomicBoolean();
return new MessageCallback() {
@Override
- public void onReceived(final Iterator<FetchedMessage> messages) {
+ public long onReceived(final Iterator<FetchedMessage> messages,
final long startOffset) {
if (stopped.get()) {
- return;
+ return startOffset;
}
- Futures.getUnchecked(executor.submit(new Runnable() {
+ return Futures.getUnchecked(executor.submit(new Callable<Long>()
{
+ long nextOffset = startOffset;
--- End diff --
You don't need this local variable. If the consumer is stopped, it always
returns the `startOffset` inside the callable. Otherwise, the callable returns
whatever returned by the `callback` delegate.
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