Mika Naylor created FLINK-23948:
-----------------------------------
Summary: Python Client Executable priority incorrect for
PYFLINK_CLIENT_EXECUTABLE environment variable
Key: FLINK-23948
URL: https://issues.apache.org/jira/browse/FLINK-23948
Project: Flink
Issue Type: Bug
Components: API / Python
Reporter: Mika Naylor
Fix For: 1.14.0
The
[documentation|https://ci.apache.org/projects/flink/flink-docs-master/docs/dev/python/python_config/#python-client-executable]
for configuring the python client executable states:
{quote}The priority is as following:
1. the command line option "-pyclientexec";
2. the environment variable PYFLINK_CLIENT_EXECUTABLE;
3. the configuration 'python.client.executable' defined in flink-conf.yaml
{quote}
I set \{{python.client.executable}} to point to Python 3.6, and submitted a job
that contained Python 3.8 syntax. Running the job normally results in a Syntax
Error as expected, and the \{{pyclientexec}} and \{{pyClientExecutable}} CLI
flags let me override this setting and point to Python 3.8. However, setting
the \{{PYFLINK_CLIENT_EXECUTABLE}} *did not overwrite the
\{{python.client.executable}} setting*.
{code:bash}
export PYFLINK_CLIENT_EXECUTABLE=/usr/bin/python3.8
./bin/flink run --python examples/python/table/batch/python38_test.py
{code}
Still used Python 3.6 as the Python client interpreter.
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