Hello, In the upgrade docs, it is mentioned "Restart the brokers one by one for the new protocol version to take effect. *Once the brokers begin using the latest protocol version, it will no longer be possible to downgrade the cluster to an older version.*"
What does this mean? Is this statement applicable to every version other than 2.1 as well? Does that mean after the update of the inter broker protocol, one should not rollback to a prior version? Thanks, Swathi
