Akhilesh Chaganti created KAFKA-15010:
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Summary: KRaft Controller doesn't reconcile with Zookeeper
metadata upon becoming new controller while in dual write mode.
Key: KAFKA-15010
URL: https://issues.apache.org/jira/browse/KAFKA-15010
Project: Kafka
Issue Type: Bug
Components: kraft
Reporter: Akhilesh Chaganti
When a KRaft controller fails over, the existing migration driver (in dual
write mode) can fail in between Zookeeper writes and may leave Zookeeper with
incomplete and inconsistent data. So when a new controller becomes active (and
by extension new migration driver becomes active), this first thing we should
do is load the in-memory snapshot and use it to write metadata to Zookeeper to
have a steady state. We currently do not do this and it may leave Zookeeper in
inconsistent state.
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