fapaul commented on a change in pull request #17870:
URL: https://github.com/apache/flink/pull/17870#discussion_r757404104
##########
File path:
flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/streaming/connectors/kafka/table/ReducingUpsertSink.java
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@@ -96,4 +97,6 @@
public Optional<SimpleVersionedSerializer<Void>>
getGlobalCommittableSerializer() {
return Optional.empty();
}
+
+ interface ValueCopyFunction<INPUT, OUTPUT> extends Function<INPUT,
OUTPUT>, Serializable {}
Review comment:
Our `SerializableFunction` was not really usable so I added a new one
and change the existing code a bit 0d42726
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