Ferran altimiras created KAFKA-8824:
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Summary: InMemoryTimeOrderedKeyValueBuffer propagates nulls when
supress is configured
Key: KAFKA-8824
URL: https://issues.apache.org/jira/browse/KAFKA-8824
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 2.3.0
Reporter: Ferran altimiras
Attachments: Test.java
Maybe this is not a bug, but it looks like something is wrong. This didn't
happen in kafka streams 2.2.
Applying an aggregate() with suppress on kafka 2.3 sends nulls into Serializer
if delayed msgs are received.
Not sure if some data is lost or not(yet). But IMHO getting a null to serialize
the "accumulator" object is suspicious that something is wrong.
Attached java code to demonstrate it.
With kafka 2.3 -> LongSerde prints NULL, not in kafka 2.2
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