Alex created FLINK-13102:
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Summary: Travis build optimization
Key: FLINK-13102
URL: https://issues.apache.org/jira/browse/FLINK-13102
Project: Flink
Issue Type: Improvement
Components: Travis
Reporter: Alex
For some types of PRs, it's relatively easy to tell that the changes in a PR
don't affect other parts of the system. Namely, it's documentation changes and
maybe Web UI changes (although, the letter is not that frequently and regularly
changes).
In such cases, it's possible to run more "lightweight" build steps, skipping
the whole build and tests suite.
*Note* (from [~Zentol]): in that case, the check at least should run license
checks.
The idea is that for documentation only changes, we can detect such PRs by
testing that the list of changed files are only in {{docs/}} subdir (excluding
{{docs/_includes/generated/}}). Detecting list of changed files during a Travis
build is described in:
* [https://twitter.com/keeskluskens/status/996005160089477120]
* [https://reflectoring.io/skip-ci-build/]
*Additional improvement:* if we know that a PR is docs only change, we can also
early run links checks during the on PR CI run (currently, such check is
running after merge, by a scheduled run).
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