Hi all, https://github.com/apache/pulsar/pull/24118 introduces breaking changes on the downstream applications without a PIP.
For example, our internal Kafka protocol implementations heavily rely on the behavior that partitions can be produced or consumed even if the partition metadata is deleted. Many tests failed due to this change. I didn't look into the technical details at the moment. But it should be noted that sometimes it's valid to read a partition without assuming the topic's partition metadata exists. I propose to revert that PR. At least, we should add a broker level config or namespace level policy to control the behavior. But still, we definitely need a PIP for such changes. We need a further discussion for the compatibility issue rather than merging it and cherry-picking it into old branches. So I suggest reverting it first. Please note that this PR also modifies many existing tests in Pulsar. It's a clear signal that breaking changes were made. We should be careful of such PRs. Thanks, Yunze
