问题
I know it is possible to configure replication factor these internal topics for the kafka streams, our application uses for normal application topics with replication factor 3 but until now I didn't configured the replication factor for the changelog/repartition topics while my assumption was if one broker dies (or for some reason leader changes) kafka stream application will automatically rebalance to new leader.
Now I am not so sure about a running Kafka Stream application can rebalance to new leader if the internal topics does not use replication factor.
Should we also use replication factor 3 for these internal topics?
Thx for answers....
回答1:
Yes, you'll want to use the same replication factor of your application topics for your changelog/repartition topics.
You can specify the replication factor your changelog/repartition topics via
properties.put(StreamsConfig.REPLICATION_FACTOR_CONFIG, 3)
HTH, Bill
来源：https://stackoverflow.com/questions/54979742/what-should-be-the-replication-factor-of-changelog-repartition-topics