We just did pretty much the exact same thing with a large in-house ETL application. We can do great static analysis of the dependencies of different jobs and t

We just did pretty much the exact same thing with a large in-house ETL application. We can do great static analysis of the dependencies of different jobs and the coverage of various tests. Most PRs are now running a tiny fraction of the test suite (thousands of tests total) in minutes instead of an hour. Run all test cases before deployment of master just in case we missed something.