Diveyam-Mishra opened a new pull request, #51336:
URL: https://github.com/apache/arrow/pull/51336
### Rationale for this change
Resolves #51335.
Two deterministic CI errors cause confusion across PRs:
1. AMD64 Windows 2022 MATLAB fails in post-job cache hashing
(hashFiles('cpp/**', 'matlab/**') failed) because background MSVC compiler
processes (mspdbsrv.exe, ctip.exe) remain running with exclusive file handles
open on generated files under cpp/.
2. AMD64 Debian SIMD Level NONE fails during docker build because
install_gcs_testbench.sh runs pip install -U pipx against Debian\'s apt-managed
pipx package which lacks a RECORD file, triggering pip 24+\'s error:
uninstall-no-record-file.
### What changes are included in this PR?
1. Add a cleanup step in .github/workflows/matlab.yml with if: always() to
terminate lingering MSVC compiler daemons (mspdbsrv.exe and ctip.exe) before
post-job caching steps run.
2. Add --ignore-installed to pip install -U pipx in
ci/scripts/install_gcs_testbench.sh to allow upgrading pipx over apt-installed
packages safely.
### Are these changes tested?
Yes, via CI.
### Are there any user-facing changes?
No.
* GitHub Issue: #51335
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