[jira] [Created] (KAFKA-15010) KRaft Controller doesn't reconcile with Zookeeper metadata upon becoming new controller while in dual write mode.

["Akhilesh Chaganti (Jira)" <ji...@apache.org>]

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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