jlon opened a new pull request, #20607:
URL: https://github.com/apache/flink/pull/20607
## What is the purpose of the change
PyFlink supports specifying index-url when installing third-party
dependencies。
When we use pyflink, if there is a third-party dependency, when using pip to
install the package, it is retrieved and obtained from pypi.python.org by
default, which is greatly affected by the network, slow download speed and easy
to cause connection timeout. At this point, we think we can specify the
index-url.
## Brief change log
- *Supports specifying index-url through the parameter
**python.requirements.index-url** when we install third-party dependencies.*
## 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, 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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