Github user chtyim commented on a diff in the pull request:
https://github.com/apache/twill/pull/16#discussion_r94551508
--- 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) {
if (stopped.get()) {
- return;
+ return Long.MIN_VALUE;
--- End diff --
Using special value is an anti-pattern. Since you are changing the
`MessageCallback` API already, probably better to have the offset being used
for the fetching call being passed to the `onReceived` method.
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