Github user srdo commented on a diff in the pull request:
https://github.com/apache/storm/pull/2282#discussion_r134125713
--- Diff:
external/storm-kafka-client/src/main/java/org/apache/storm/kafka/spout/KafkaTupleListener.java
---
@@ -0,0 +1,48 @@
+package org.apache.storm.kafka.spout;
+
+import java.io.Serializable;
+import java.util.List;
+
+
+/**
+ * The KafkaTupleListener handles state changes of a kafka tuple inside a
KafkaSpout.
+ */
+public interface KafkaTupleListener extends Serializable {
--- End diff --
I meant being able to emit the tuples that have exceeded their retry limit
(those that hit onMaxRetryReached) to a stream. It's probably not a great idea,
since we'd need to consider processing guarantees for those too, so never mind
:)
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