shuiqiangchen created FLINK-17609:
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Summary: Execute the script directly when user specified the entry
script with "-py" rather than run as module.
Key: FLINK-17609
URL: https://issues.apache.org/jira/browse/FLINK-17609
Project: Flink
Issue Type: Bug
Components: API / Python, Client / Job Submission
Affects Versions: 1.11.0
Reporter: shuiqiangchen
Fix For: 1.11.0
Currently, the PythonDriver will always construct the python execution command
with "-m" option, which means uses code files will run as a module, E.g,
"python -m <module_name>". However, when user specifies the "-py" option
followed by the entry script file path, we should directly execute the user
specified script, such as "python <entry_script_file_path>".
The difference between "python <entry_script_file_path>" and "python -m
<module_name>" is as follow:
"python <entry_script_file_path>" will add the parent directly of the entry
script to the PYTHONPATH so that all modules under the directly can be found
when executing the script.
"python -m <module_name>" will only add the current execution directory to
the PYTHONPATH, which may cause "ModuleNotFoundError" when the entry module
references other modules under the same directory.
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