SteNicholas opened a new pull request #13755:
URL: https://github.com/apache/flink/pull/13755
## What is the purpose of the change
*Currently, the Kubernetes Client in `KubernetesResourceManagerDriver` is
using a dedicated thread pool through calling
`KubeClientFactory::createThreadPoolForAsyncIO` to create fixed thread pool.
`KubernetesResourceManagerDriver` could get the io executor and eliminate the
redundant thread pool. `KubeClientFactory` uses
`KubeClientFactory::createThreadPoolForAsyncIO` by default.*
## Brief change log
- *`KubernetesResourceManagerDriver` adds constructor with creating
`FlinkKubeClient ` through `KubeClientFactory#fromConfiguration(flinkConfig,
ioExecutor)` to reuse the io executor of `AbstractResourceManagerDriver`.*
## Verifying this change
- *`TestingResourceManagerDriver` updates `initialize()` with
`ExecutorService` type parameter to verify the `AbstractResourceManagerDriver`
whether to work.*
## 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)
- 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)
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