[jira] [Created] (KAFKA-16247) 1 replica keep out-of-sync after migrating broker to KRaft

["Luke Chen (Jira)" <ji...@apache.org>]

Luke Chen created KAFKA-16247:
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             Summary: 1 replica keep out-of-sync after migrating broker to KRaft
                 Key: KAFKA-16247
                 URL: https://issues.apache.org/jira/browse/KAFKA-16247
             Project: Kafka
          Issue Type: Bug
            Reporter: Luke Chen


We are deploying 3 controllers and 3 brokers, and following the steps in [doc|https://kafka.apache.org/documentation/#kraft_zk_migration]. When we're moving from "Enabling the migration on the brokers" state to "Migrating brokers to KRaft" state, the first rolled broker becomes out-of-sync and never become in-sync. 


From the log, we can see some "reject alterPartition" errors, but it just happen 2 times. Theoretically, the leader should add the follower  into ISR as long as the follower is fetching since we don't have client writing data. But can't figure out why it didn't fetch. 


Logs: https://gist.github.com/showuon/64c4dcecb238a317bdbdec8db17fd494



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