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https://issues.apache.org/jira/browse/ARROW-8648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Francois Saint-Jacques reassigned ARROW-8648:
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Assignee: Mark Hildreth
> [Rust] Optimize Rust CI Build Times
> -----------------------------------
>
> Key: ARROW-8648
> URL: https://issues.apache.org/jira/browse/ARROW-8648
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust
> Reporter: Mark Hildreth
> Assignee: Mark Hildreth
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> In the Rust CI workflows (rust_build.sh, rust_test.sh), there are some build
> options used that are at odds with each other, resulting in multiple
> redundant builds where a smaller number could do the same job. The following
> tweaks, at minimal, could reduce this, speeding up build times:
> * Ensure that RUSTFLAGS="-D warnings" is used for all cargo commands.
> Currently, it's only used for a single command (the {{build --all-targets}}
> in {{rust_build.sh}}). Subsuquent runs of cargo will ignore this first build,
> since RUSTFLAGS has changed.
> * Don't run examples in release mode, as that would force a new (and slower)
> rebuild, when the examples have already been built in debug mode.
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