Description
The changes made under KIP-699 assume that it is always safe to use unbatched mode since we move from batched to unbatched and cache the value forever in clients if a broker doesn't support batching. During rolling upgrade, if a request is sent to an older broker, we move from batched to unbatched mode. The consumer (admin client as well I think) disables batching and future requests to upgraded brokers will fail because we attempt to use unbatched requests with a newer version of the request.
Attachments
Issue Links
- links to