potiuk commented on issue #4938: [AIRFLOW-4117] Multi-staging Image - Travis CI tests [Step 3/3] URL: https://github.com/apache/airflow/pull/4938#issuecomment-506476350 @ashb @Fokko @gerardo @BasPH -> We have now Green CI using Docker image cache and the timing for the builds is pretty encouraging (https://travis-ci.org/apache/airflow/builds/551370142): Comparison: Old approach: Pre-test timings: the flake8/mypy/docs/pylint run between 3-4 minutes (docs are longest). Test timing: - mysql=30 mins - postgres=30 mins 30s - sqlite=22 mins - kubernetes=25 mins Official Docker CI approach: Pre-test timings: the flake8/mypy/docs/pylint run all about 1 minute longer than current approach (they are run in docker and are easy to reproduce locally) Test timing: - mysql=25 mins - postgres=26 mins - sqlite=22 mins - kubernetes=22 mins Seems that by using the new approach we can save around 4 minutes elapsed time and we accumulate saving of some 8 minutes of build time per build. Looking forward to your final (I hope) review :)
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