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https://issues.apache.org/jira/browse/IMPALA-11849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17678322#comment-17678322
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Michael Smith commented on IMPALA-11849:
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Reasoning around using OS python for the virtualenvs is that this will more
closely reflect customer environments and hopefully catch issues that might
come up during pip install. In IMPALA-11846 it was a false positive because the
version provided isn't what's used when uploading to PyPI.
> Improve python environment stability around impala_shell packaging
> ------------------------------------------------------------------
>
> Key: IMPALA-11849
> URL: https://issues.apache.org/jira/browse/IMPALA-11849
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Gergely Fürnstáhl
> Priority: Major
>
> How do we use python in Impala currently:
> * custom built python2 for ABI compatibility reasons to use by impala_shell
> * During build, we test the installability of impala_shell package by:
> ** Distributing by source to a tar.gz
> ** Creating virtualenv using the custom built impala-virtualenv using the
> system interpreter (/usr/bin/python*) both for python2 and python3
> *** This automatically installs pip and setuptools, by default a version it
> chooses.
> *** This version of impala-virtualenv only support --no-pip and
> --no-setuptools, a moderner version support --setuptools <version> too, both
> could be used to fix the version of the packaging environment regardless of
> the interpreters version (to an extent, they need to be compatible obviously)
> ** Packaging it to a wheel
> *** This uses an isolated build, where with modernising the packaging and
> introducing pyproject.toml we could specify setuptools' version
> ** Install it to the virtual env
> *** This uses pip, with the possibility to fallback to setuptools legacy
> method.
> * During impala-shell release, we probably do something similar, but need to
> investigate it.
> Problems:
> * We use 3 different pythons during the build, system python's version could
> vary depending on the OS/image.
> * pip and setuptools' version is chosen by the interpreter, which makes the
> build not reproducible, a new release could break the install (IMPALA-11846)
> * custom built python2 is not getting any younger/better
> Possibilities:
> * Specify exact version of pip and setuptools used during build to make it
> reproducible, specify setuptools version used for packaging impala_shell e.g.
> by using a pyproject.toml
> * Custom build python3 too, a newer version could make our tests running
> faster too and drop dependency on system python.
> * Test installing impala_shell with a more realistic BUILD_VERSION instead
> of a hardcoded one.
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