Github user jfenc91 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1696#discussion_r79973663
--- Diff:
external/storm-kafka-client/src/main/java/org/apache/storm/kafka/spout/KafkaSpout.java
---
@@ -145,6 +154,10 @@ private void initialize(Collection<TopicPartition>
partitions) {
}
retryService.retainAll(partitions);
+
+ //Emitted messages for partitions that are no longer assigned
to this spout can't be acked, and they shouldn't be retried. Remove them from
emitted.
+ Set<TopicPartition> partitionsSet = new HashSet(partitions);
+ emitted.removeIf((msgId) ->
!partitionsSet.contains(msgId.getTopicPartition()));
--- End diff --
This looks good. I think this same logic may be needed in
onPartitionsRevoked as well. Also, I believe the message may need to be removed
from the retryService as well. Please correct me if I am wrong!
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