[jira] [Created] (IMPALA-10274) Move impala-python initialization into the CMake build

["Joe McDonnell (Jira)" <ji...@apache.org>]

Joe McDonnell created IMPALA-10274:
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             Summary: Move impala-python initialization into the CMake build
                 Key: IMPALA-10274
                 URL: https://issues.apache.org/jira/browse/IMPALA-10274
             Project: IMPALA
          Issue Type: Improvement
          Components: Infrastructure
    Affects Versions: Impala 4.0
            Reporter: Joe McDonnell


Currently, the impala-python virtualenv gets initialized on the first invocation of bin/impala-python. Most of the time, this happens when running bin/gen_build_version.py from buildall.sh. This is a serial part of the build, and the virtualenv initialization takes more than two minutes. 

It would be better to use ordinary python for bin/gen_build_version.py (and any other python commands during the build) and initialize the virtualenv as a specific step in the CMake build. This would allow the virtualenv initialization to happen in parallel to the rest of the build, which saves multiple minutes.



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