F Méthot created KAFKA-13298:
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Summary: Improve documentation on EOS KStream requirements
Key: KAFKA-13298
URL: https://issues.apache.org/jira/browse/KAFKA-13298
Project: Kafka
Issue Type: Improvement
Components: streams
Affects Versions: 2.8.0
Reporter: F Méthot
After posting question on a kafka forum, the following was revealed by kafka
developer:
{quote}Is there minimum replication factor required to enable exactly_once for
topic involved in transactions?
{quote}
"Well, technically you can configure the system to use EOS with any replication
factor. However, using a lower replication factor than 3 effectively voids EOS.
Thus, it’s strongly recommended to use a replication factor of 3."
This should be clearly documented in the stream doc:
[https://kafka.apache.org/28/documentation/streams/developer-guide/config-streams.html]
Which refers to this broker link
[https://kafka.apache.org/28/documentation/streams/developer-guide/config-streams.html#streams-developer-guide-processing-guarantedd]
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