[jira] [Created] (FLINK-19389) Error determining python major version to start fileserver during e-2-e tests

[Shang Yuanchun (Jira)]

Di Xu created FLINK-19389:
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             Summary: Error determining python major version to start fileserver during e-2-e tests
                 Key: FLINK-19389
                 URL: https://issues.apache.org/jira/browse/FLINK-19389
             Project: Flink
          Issue Type: Bug
          Components: Tests
            Reporter: Di Xu


Currently the logic to determine python version in command-docker.sh[1] has an error:
 * when there is only python3 installed, `command -v python` also returns 0 and then `python  (actually 3) python2_fileserver.py` will be executed then it causes an error
 * in the case of python version management tool pyenv[2] is used, the soft link to python3 would exist even if use switched to python2, so simply check python3 first will NOT solve the problem.

The suggested way to run:

python -c 'import sys; print(sys.version_info.major)'

 

[1] [https://github.com/apache/flink/blob/master/flink-end-to-end-tests/test-scripts/common_docker.sh#L57]

[2] [https://github.com/pyenv/pyenv] 



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