[GitHub] [flink] WeiZhong94 opened a new pull request #9655: [FLINK-14017][python] Support to start up Python worker in process mode.

[GitBox <gi...@apache.org>]

WeiZhong94 opened a new pull request #9655: [FLINK-14017][python] Support to start up Python worker in process mode.
URL: https://github.com/apache/flink/pull/9655
 
 
   ## What is the purpose of the change
   
   *This pull request reimplements the apache-beam container script `boot.go` in python with some minor changes to support the beam python worker running in process mode and avoid introducing go-lang dependencies to Flink.*
   
   ## Brief change log
   
     - *Add `boot.py`,  a python implementation of `boot.go` in "beam-sdks-python-container" project of Apache Beam for launching the python worker.*
     - *Different from `boot.go` of Apache Beam, `boot.py` supports specify the path of python executable file, and the default pip command is `python -m pip` instead of `/usr/local/bin/pip`.*
     - *Different from `boot.go` of Apache Beam, `boot.py` does not restrict the platform of user-specified apache beam sdk package to `linux`.*
   
   ## Verifying this change
   
   This change added tests and can be verified by running `flink/flink-python/pyflink/fn_execution/tests/test_process_mode_boot.py`.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (yes)
     - 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, 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? (PythonDocs)
   

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