David Arthur created KAFKA-14909:
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Summary: KRaft Controllers not setting ZkMigrationReady tagged
field
Key: KAFKA-14909
URL: https://issues.apache.org/jira/browse/KAFKA-14909
Project: Kafka
Issue Type: Bug
Components: kraft
Affects Versions: 3.4.0
Reporter: David Arthur
Fix For: 3.5.0, 3.4.1
When sending ApiVersionsResponse to other controllers, the KRaft controller is
not setting the ZkMigrationReady field. This means, we can't determine if the
full KRaft quorum has been properly configured for a migration before
triggering the migration.
As a result, we could start the migration on controller A (which was properly
configured), then fail over to controller B (which was not properly configured)
and no longer be in dual-write mode.
The fix is to properly set the ZkMigrationReady tagged field, and to make use
of it in KRaftMigrationDriver
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