kien-truong opened a new pull request #15704:
URL: https://github.com/apache/flink/pull/15704
## What is the purpose of the change
This change adds support for setting a port range for a TaskManager data
port, which allows multiple TaskManager to run on the same machine without
having to use a random port.
## Brief change log
- Change value type of `taskmanager.data.bind-port` from Integer to String.
- Use `NetUtils.getPortRangeFromString` to generate the list of ports that
can be used from the value of `taskmanager.data.bind-port`
- When starting up TaskManager's NettyServer, try to bind to the ports from
the configured range sequentially, returning on the first success.
- Add documents for previously undocumented `taskmanager.data.bind-port`
## Verifying this change
- `NetUtils.getPortRangeFromString` is reused and already covered by
existing tests.
- Add basic unittest: `NettyServerMultiPortsTest`, to verify that you can
start 2 NettyServer concurrently without conflict by setting multiple ports in
`taskmanager.data.bind-port`
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? yes
- If yes, how is the feature documented? docs
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