Github user xccui commented on the issue:
https://github.com/apache/flink/pull/6090
Hi @twalthr, I've made some changes to the PR.
1. Add a normalize method in `ClassTypeValidator` which converts the config
like `constructor.0 = abc` to `constructor.0.type = STRING constructor.0.value
= abc`.
2. Enrich the `DescriptorProperties` with more types.
3. Add a `getListProperties` which returns all values under a group list
formed keys. E.g. `constructor` will return all `constructor.#`.
4. Refine the descriptor APIs.
I know there are still a lot of work to do (e.g., add more tests, document
the features, support array formed parameters). I'll continue working on that
if I still have some time before the deadline.
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