alamb commented on code in PR #2948:
URL: https://github.com/apache/arrow-datafusion/pull/2948#discussion_r925984942
##########
.github/workflows/rust.yml:
##########
@@ -46,36 +46,29 @@ jobs:
# and thus do not depend on the OS, arch nor rust version.
path: /github/home/.cargo
key: cargo-cache-
- - name: Cache Rust dependencies
Review Comment:
```
This cache is automatically keyed by:
the github
[job_id](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_id),
the rustc release / host / hash,
the value of some compiler-specific environment variables (eg. RUSTFLAGS,
etc), and
a hash of all Cargo.lock / Cargo.toml files found anywhere in the repository
(if present).
a hash of all rust-toolchain / rust-toolchain.toml files in the root of the
repository (if present).
```
Seems particularly relevant to why the basic cache wasn't working for us
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