ARROW-15442: [C++][Python] Skip GDB tests on a non-debug build

[pitrou]

Even though the GDB extension should theoretically work with a release build, it's difficult to test for, as we can't lookup any variables from the GDB prompt.

[github-actions]

https://issues.apache.org/jira/browse/ARROW-15442

[github-actions]

⚠️ Ticket has not been started in JIRA, please click 'Start Progress'.

[pitrou]

@github-actions crossbow submit -g python

[github-actions]

Revision: 9c5d859

Submitted crossbow builds: ursacomputing/crossbow @ actions-1483

Task	Status
test-conda-python-3.10
test-conda-python-3.7
test-conda-python-3.7-hdfs-2.9.2
test-conda-python-3.7-hdfs-3.2.1
test-conda-python-3.7-kartothek-latest
test-conda-python-3.7-kartothek-master
test-conda-python-3.7-pandas-0.24
test-conda-python-3.7-pandas-latest
test-conda-python-3.7-spark-v3.1.2
test-conda-python-3.8
test-conda-python-3.8-hypothesis
test-conda-python-3.8-pandas-latest
test-conda-python-3.8-pandas-nightly
test-conda-python-3.8-spark-v3.2.0
test-conda-python-3.9
test-conda-python-3.9-dask-latest
test-conda-python-3.9-dask-master
test-conda-python-3.9-pandas-master
test-conda-python-3.9-spark-master
test-debian-11-python-3
test-fedora-33-python-3
test-ubuntu-20.04-python-3

[kszucs]

Can we remove the PYARROW_TEST_GDB=OFF flags from #12243 once this is merged (presuming a new RC)?

[pitrou]

If these are all non-debug builds, then probably, yes.

[kszucs]

@github-actions crossbow submit wheel-macos-big-sur-*

[github-actions]

Revision: 88eca5b

Submitted crossbow builds: ursacomputing/crossbow @ actions-1484

Task	Status
wheel-macos-big-sur-cp310-arm64
wheel-macos-big-sur-cp310-universal2
wheel-macos-big-sur-cp38-arm64
wheel-macos-big-sur-cp39-arm64
wheel-macos-big-sur-cp39-universal2

[kszucs]

@pitrou shouldn't FileNotFoundError: [Errno 2] No such file or directory: 'gdb' like errors be prevented by the skip here

arrow/python/pyarrow/tests/test_gdb.py

Lines 161 to 164 in 0fa4b9c

	@pytest.fixture(scope='session')
	def gdb():
	skip_if_gdb_unavailable()
	gdb = GdbSession("-q", python_executable())

?

[pitrou]

@kszucs It should :-(

[pitrou]

Hmm, I get the impression that subprocess may be using two slightly different approaches based on the exact arguments. I'll try to push a fix.

[pitrou]

Crossbow builds at https://github.com/ursacomputing/crossbow/branches/all?query=pitrou-1

[kszucs]

The builds are failing due to an unrelevant issue https://issues.apache.org/jira/browse/ARROW-15453

[kszucs]

Thanks Antoine!

[ursabot]

Benchmark runs are scheduled for baseline = f6f494e and contender = 38d4d77. 38d4d77 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Failed ⬇️0.0% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.52% ⬆️0.13%] ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python. Runs only benchmarks with cloud = True
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java