Chia-Ping Tsai created KAFKA-20089:
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Summary: AutoTopicCreationManager should return
LEADER_NOT_AVAILABLE for in-flight topic creation in KRaft
Key: KAFKA-20089
URL: https://issues.apache.org/jira/browse/KAFKA-20089
Project: Kafka
Issue Type: Bug
Reporter: Chia-Ping Tsai
Assignee: Chia-Ping Tsai
from: https://lists.apache.org/thread/5vxgjl7rv4ys6h1z641wqkvh3obtqxvn
When {{auto.create.topics.enable}} is true, calling
{{consumer.partitionsFor("non-existent-topic")}} behaves differently between ZK
and KRaft modes.
*ZK Mode:* The client retries and eventually receives the partition info.
*KRaft Mode:* The client receives an empty result (or failure) immediately, as
it does not retry.
The root cause is that broker returns {{LEADER_NOT_AVAILABLE}} once creating
the topic on zk. By contrast, broker returns
{{{}UNKNOWN_TOPIC_OR_PARTITION{}}}, which results in no retry, to client.
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