shuiqiangchen opened a new pull request #13136:
URL: https://github.com/apache/flink/pull/13136
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## What is the purpose of the change
Add dependency management for StreamExecutionEnvironment when Users need to
specified third party dependencies in their DataStream Job. We purpose to add
the following interfaces forPython StreamExecutionEnvironment:
- add_python_file()
- set_python_requirements()
- add_python_archive()
- set_python_executable()
And user might apply those interfaces arbitrarily, we must configure those
dependencies to operators that depend on them correctly before executing the
job.
Further more, some operation might consist of multiple operations, take
key_by() for instance:
```
>>> source_stream = env.from_collection(...)
>>> keyed_stream = upstream.key_by(...)
>>> mapped_stream = keyed_stream.map(...)
```
The implementation of key_by() is consist of a _stream_key_by_map operator
and a _keyed_stream_values_map operator.
we need to make sure the _stream_key_by_map operator is chained with the
source_stream operator, the _keyed_stream_values_map operator chained with
mapped_stream operator that they have the same parallelism, slot sharing group,
co-location group and the ship_strategy should be FORWARD.
All this task should be accomplished before submitting the job by a
PythonConfigUtil.
## Brief change log
Add the following interfaces forPython StreamExecutionEnvironment:
- add_python_file()
- set_python_requirements()
- add_python_archive()
- set_python_executable()
Add util method getEnvConfigWithDependencies() to get
StreamExecutionEnvironment configuration with dependencies.
Add a util method generateStreamGraphWithDependencies() to generate a
StreamGraph with all operators have dependencies configured.
## Verifying this change
This change has test cases covered as followed:
- test_add_python_file()
- test_set_requirements_without_cached_directory()
- test_set_requirements_with_cached_directory()
- test_add_python_archive()
- test_set_stream_env()
- test_generate_stream_graph_with_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/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? ( not documented)
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