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new 2c800e6bbb8 GH-54928: [Packaging][CI] Change TMPDIR for reproducible
builds to avoid out of space (#54943)
2c800e6bbb8 is described below
commit 2c800e6bbb8735e868b3b97f041de45095bfdbc5
Author: Raúl Cumplido <[email protected]>
AuthorDate: Fri Oct 23 16:17:44 2026 +0200
GH-54928: [Packaging][CI] Change TMPDIR for reproducible builds to avoid
out of space (#54943)
### TBD
### Rationale for this change
Several Linux Packaging jobs are currently failing with out of space on the
verify reproducibility step. This is due to `/tmp` size. Ubuntu runner image
changed from Ubuntu 24.04 to Ubuntu 26.04 where the `/tmp` folder is mounted.
In the past the `/tmp` folder was on the root disk which had 145 GB of disk
space.
```
Filesystem Size Used Avail Use% Mounted on
/dev/root 145G 60G 85G 42% /
tmpfs 7.9G 84K 7.9G 1% /dev/shm
tmpfs 3.2G 988K 3.2G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
efivarfs 128M 32K 128M 1% /sys/firmware/efi/efivars
/dev/sda16 881M 85M 735M 11% /boot
/dev/sda15 105M 6.2M 99M 6% /boot/efi
tmpfs 1.6G 12K 1.6G 1% /run/user/1001
```
With the new runner the `/tmp` folder is on `tmpfs` with 7.8GB.
```
2026-10-23T02:23:08.8104328Z Filesystem Size Used Avail Use% Mounted
on
2026-10-23T02:23:08.8104761Z /dev/root 145G 58G 88G 40% /
2026-10-23T02:23:08.8105145Z tmpfs 7.9G 0 7.9G 0% /dev/shm
2026-10-23T02:23:08.8105751Z tmpfs 3.2G 1000K 3.2G 1% /run
2026-10-23T02:23:08.8106428Z efivarfs 128M 32K 128M 1%
/sys/firmware/efi/efivars
2026-10-23T02:23:08.8107172Z tmpfs 7.9G 38M 7.8G 1% /tmp
2026-10-23T02:23:08.8108065Z none 1.0M 0 1.0M 0%
/run/credentials/systemd-journald.service
2026-10-23T02:23:08.8109058Z none 1.0M 0 1.0M 0%
/run/credentials/systemd-resolved.service
2026-10-23T02:23:08.8109866Z /dev/sda13 989M 81M 842M 9% /boot
2026-10-23T02:23:08.8110512Z /dev/sda15 105M 6.3M 99M 7% /boot/efi
2026-10-23T02:23:08.8111184Z none 1.0M 0 1.0M 0%
/run/credentials/systemd-networkd.service
2026-10-23T02:23:08.8112063Z tmpfs 1.6G 8.0K 1.6G 1%
/run/user/1001
2026-10-23T02:23:08.8112526Z none 1.0M 0 1.0M 0%
/run/credentials/getty@ tty1.service
2026-10-23T02:23:08.8113053Z none 1.0M 0 1.0M 0%
/run/credentials/serial-getty@ ttyS0.service
```
### What changes are included in this PR?
Use `runner.temp` (`RUNNER_TEMP`) to get a temporary directory on the
runner instead of using `/tmp`.
See
https://docs.github.com/en/actions/reference/workflows-and-actions/contexts and
https://docs.github.com/en/actions/reference/workflows-and-actions/variables
### Are these changes tested?
Yes via CI
### Are there any user-facing changes?
No
### Was AI used for this PR?
In accordance to the [AI generation
guidelines](https://arrow.apache.org/docs/dev/developers/overview.html#ai-generated-code),
please disclose below whether and how AI was used in this PR.
**PR code and description written by:**
- [x] Human
- [x] AI
**Reviewed before submission by:**
- [x] Human
- [ ] AI
- [ ] Not reviewed
* GitHub Issue: #54928
Lead-authored-by: Raúl Cumplido <[email protected]>
Co-authored-by: Raúl Cumplido <[email protected]>
Signed-off-by: Sutou Kouhei <[email protected]>
---
.github/workflows/package_linux.yml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/.github/workflows/package_linux.yml
b/.github/workflows/package_linux.yml
index 54ff6f8532d..8cc6de3a9f7 100644
--- a/.github/workflows/package_linux.yml
+++ b/.github/workflows/package_linux.yml
@@ -349,6 +349,8 @@ jobs:
if: env.TASK_NAMESPACE == 'apt'
env:
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+ # Required because the default /tmp is a size-limited tmpfs on some
runner images.
+ TMPDIR: ${{ runner.temp }}
run: |
# Validate reproducibility. Reprotest runs the build twice
# inside its own tempdir and doesn't copy artifacts back,
