Debian Bug report logs - #1064368
python-xarray: intermittent segfault in test_open_mfdataset_manyfiles[netcdf4-20-True-*-5]

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Message #5 received at [email protected] (full text, mbox, reply):

From: "Rebecca N. Palmer" <[email protected]>

To: [email protected]

Subject: python-xarray: intermittent segfault in test_open_mfdataset_manyfiles[netcdf4-20-True-*-5]

Date: Tue, 20 Feb 2024 21:13:48 +0000

Package: python3-xarray
Version: 2023.12.0-3

xarray sometimes (~10% of the time) segfaults in 
tests/test_backends.py::test_open_mfdataset_manyfiles, usually 
[netcdf4-20-True-None-5] but sometimes [netcdf4-20-True-5-5].

This has happened in both Python 3.11 and 3.12, and on various 
architectures:
https://ci.debian.net/packages/p/python-xarray/testing/amd64/43068287/
https://ci.debian.net/packages/p/python-xarray/testing/armhf/42545225/
https://ci.debian.net/packages/p/python-xarray/testing/s390x/43076980/
https://ci.debian.net/packages/p/python-xarray/testing/ppc64el/42673240/

Message #10 received at [email protected] (full text, mbox, reply):

From: "Rebecca N. Palmer" <[email protected]>

To: [email protected]

Subject: Re: Bug#1064368: python-xarray: intermittent segfault in test_open_mfdataset_manyfiles[netcdf4-20-True-*-5]

Date: Wed, 21 Feb 2024 19:08:35 +0000

Control: forwarded -1 https://github.com/pydata/xarray/issues/7079
(actually found independently)

The above upstream report suggests that this is because netcdf-python is 
no longer thread-safe.

The 3 random-autopkgtest-fail bugs (this, #1064326 and #1064370) 
together seem to be more common in pandas 2.  It's possible that some of 
them are actually the same underlying bug.

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