Hey folks, I've noticed that ZkMigrationIntegrationTest#testDualWrite has been failing a lot lately on trunk and PR builds. Earlier this week I tracked down the root cause and have been working on a fix (KAFKA-14805). Basically, what's happening is an AllocateProducerIdRequest is being handled by the controller before the ZK migration kicks off.
Just wanted to let everyone know that a fix is in progress. Cheers, David
