Page History

...

By default, namespace will be empty string. All existing entities will be part of default namespace and the current storage layouts will be in accordance with the proposed storage layouts.

Pros

...

1. Will not change existing behavior.
2. No impact on upgrades.

Cons

...

1. Namespace needs to be parsed out of topic names and that requires some separating string or character. We suggest to make this string configurable at cluster level with "::" as default.
2. Longer topic names in requests and responses.

...