dawidwys opened a new pull request #12945:
URL: https://github.com/apache/flink/pull/12945
## What is the purpose of the change
Adding a generic type to the method makes it possible to pass the type
from a lambda function. Otherwise a wildcard type '?' is derived as
Object and thus TypeExtractor extract a GenericTypeInfo<Object> for the
key.
## Brief change log
* Changed method ConnctedStream#keyBy to accept `KeySelector` of the same
generic type in both scala and java API
* Replaced an internal KeySelectorWithType class in scala API with
explicitly passing the keyType to the underlying java API.
## Verifying this change
Added test:
* `DataStreamTest#testKeyedConnectedStreamsType`
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (**yes** / no)
- The serializers: (**yes** / no / don't know) -> can change serializer
for keys in StateBackends
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / **no** /
don't know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs /
JavaDocs / not documented)
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
