[ARROW-11406] [CI][C++] Fix caching on Travis-CI builds

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: C++, Continuous Integration
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/27295
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 27/Jan/21 19:45
• Updated: 11/Jan/23 08:19
• Resolved: 28/Jan/21 10:17

Description

The ccache-based caching on Travis-CI currently doesn't work: the restored cache is always empty.

Fixing the caching setup should allow shortening wait queues.

Issue Links

• links to: GitHub Pull Request #9344