Neal Richardson created ARROW-8266:
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Summary: [C++] Add backup mirrors for external project source
downloads
Key: ARROW-8266
URL: https://issues.apache.org/jira/browse/ARROW-8266
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Neal Richardson
Assignee: Neal Richardson
Fix For: 0.17.0
As we've seen a number of times, most recently with boost, our builds sometimes
fail because of a failure to download bundled dependencies. To reduce this
risk, we can add alternate URLs to the cmake externalprojects, so that it will
attempt to download from the second location if the first fails
(https://cmake.org/cmake/help/latest/module/ExternalProject.html). This feature
is available in cmake >=3.7.
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