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[C++][Packaging] TST: arrow-flight-test started hanging on windows #50845
Description
Describe the bug, including details regarding any error messages, version, and platform.
In conda-forge, I'm seeing hangs in all windows jobs for arrow v22+; at first I thought this was some flake, but they've been quite consistently reproducible (though also not 100%? 🤔). Interestingly, v21 does not seem affected. I don't really have more logs than that the test just never finishes, and eventually gets killed by the timeout (note the difference in timestamps).
2026-08-09T22:51:16.4468360Z 80/105 Test #80: arrow-flight-internals-test .................. Passed 0.20 sec
2026-08-09T22:51:16.4473910Z Start 81: arrow-flight-test
2026-08-10T03:54:39.4204986Z Traceback (most recent call last):
[...]
2026-08-10T03:54:39.4326015Z File "C:\Miniforge\Lib\site-packages\conda_build\utils.py", line 330, in _execute
2026-08-10T03:54:39.4327097Z time.sleep(time_int)
2026-08-10T03:54:39.4327826Z KeyboardInterrupt
Component(s)
C++, Packaging
Activity
[-]TST: arrow-flight-test started hanging on windows[/-][+][C++][Packaging] TST: arrow-flight-test started hanging on windows[/+]VedantRalekar commentedon Aug 11, 2026
Hi @h-vetinari, Thanks for reporting this. I’m interested in investigating this Windows/Flight test hang.
Could you provide a bit more information to help narrow down the regression?
arrow-flight-testalso hang when run locally on Windows?The CI logs suggest that
arrow-flight-teststarts successfully and then hangs until the job timeout, so having the full job details would be especially helpful.Thanks!
raulcd commentedon Aug 11, 2026
@h-vetinari that's interesting, on 22.0.0 I did some refactoring in order to support Dictionary replacement moving from our custom logic to reuse our IPC logic so it is potentially related to those. Adding here the issues related to flight for 22.0.0:
tadeja commentedon Aug 17, 2026
I've checked verbose repeated logs added by @raulcd on conda-forge/arrow-cpp-feedstock#2054
https://github.com/conda-forge/arrow-cpp-feedstock/actions/runs/31808481642/job/94793059241#step:7:5850
and it somewhat resembles the rare abseil-cpp sync primitives issue on Windows worked around with #50085 (comment) (debugged via process dump) except that reproduced under parallel Ctest... Is there a chance to retrieve process dump from conda-forge ?