Hi Everyone,
Some of my thoughts:
1. If we are going to introduce new methods or stages in the lifecycle of a
function such as "open" and "close", I would recommend we follow what we
already have for Pulsar IO sources and Sink so that we are consistent.
2. I am also not a particular fan of the
- Regarding the interface design:
One thing we need to confirm is whether we **don't want old runtime to execute
new function without proper initialization** or not.
If this rule must be followed, then one possible way is we define a separate
`HookFunction` interface which includes `setup`, `pr
