[ARROW-2563] [Rust] Poor caching in Travis-CI

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.0
• Component/s: Continuous Integration, Rust
• Labels: pull-request-available
• Assignee: Chao Sun
• Reporter: Antoine Pitrou
• Created: 09/May/18 15:30
• Updated: 14/May/18 20:50
• Resolved: 14/May/18 20:46

Description

Since the Rust project isn't at the repo root, Travis-CI won't compiled cache artifacts by default. This leads to long CI times as all packages get recompiled (see https://docs.travis-ci.com/user/caching/#Rust-Cargo-cache for what gets cached).

In https://travis-ci.org/pitrou/arrow/jobs/376859806 I tried the following:

export CARGO_TARGET_DIR=$TRAVIS_BUILD_DIR/target

and after a first run, the build time went down to 2 minutes (from 15-18 minutes).

Issue Links

• links to: GitHub Pull Request #2021