Jonathan Keane created ARROW-12826:
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Summary: [R] [CI] Add caching to revdepchecks
Key: ARROW-12826
URL: https://issues.apache.org/jira/browse/ARROW-12826
Project: Apache Arrow
Issue Type: Improvement
Components: Continuous Integration, R
Reporter: Jonathan Keane
With ARROW-12569 we added a (manual) reverse dependency check job. This runs
fine (if slow) for a one-off run. It should be possible to cache between runs.
There are a few issues with this currently:
* {revdepcheck} does not (yet) [support only running new
runs|https://github.com/r-lib/revdepcheck/issues/94]
* The cache doesn't cache some of the longest running tasks (installing the
reverse dependencies)
* If we cache the revdeps directory, we will need to re-add packages that
should be re-checked.
We should investigate contributing to revdepcheck to resolve the run-only-new
and possibly also add features for cacheing the installations (and only change
when the crancache is invalidated / finds a new package?)
https://github.com/HenrikBengtsson/revdepcheck.extras might also be helpful
For posterity, the following is ~what we would need to add to
dev/tasks/r/github.linux.revdepcheck.yml
```
- name: Cache crancache and revdeps directory
uses: actions/cache@v2
with:
key: {{ "r-revdep-cache-${{ some-way-to-get-arrow-version }}" }}
path: |
arrow/r/revdep
arrow/.crancache
```
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