I believe only the folks who have write access to the codebase, i.e. the committers, can stop/cancel/re-run the Travis CI jobs.
What the contributors can do is to make commits to the branch in their own fork & ensure it’s working/passing tests as expected, before they create the Pull Request.
> On 22 Nov 2018, at 12:41 AM, Sai Phanindhra <phani8996@xxxxxxxxx> wrote:
> Deng Xiaodong thanks for helping us with this. I hope this will help us in
> developing and testing fast. I would like to ask is there a provision to
> cancel our own builds in travis. I can see sometimes contributors are
> pushing multiple commits in small intervals of time leading to multiple
> builds. If we can kill/cancel old builds and let only the latest build run
> it would be better use of resources.
> On Wed, 21 Nov 2018 at 21:56, Deng Xiaodong <xd.deng.r@xxxxxxxxx> wrote:
>> Hi folks,
>> I noticed that testing is somehow a problem for some folks who would like
>> to contribute (either have trouble setting local testing env, or misused
>> Pull Request to test). Actually because Airflow is using Travis CI for unit
>> testing, running testing for any of your change/commit is very very easy.
>> 1. Go to https://travis-ci.org/, click “Sign in with GitHub”. If you
>> haven’t done this before, possibly it will ask you to “Authorize Travis CI
>> for Open Source”.
>> 2. After this is done, you may be redirected to
>> https://travis-ci.org/account/repositories. Then you will see a list of
>> your public repositories. Let’s assume you have already forked Airflow,
>> then just toggle it on.
>> 3. Everything is good to go! From now on, if you make any change/commit to
>> your own fork of Airflow, the Travis CI test will be triggered
>> (Travis-related files is already included in the Airflow codebase).
>> ****Why to do this****
>> - You don’t have to set up local testing env, or misuse Pull Request to
>> test your code change.
>> - Travis CI is free for Open Source project (public repo), but it only
>> allows 5 concurrent tests. On the other hand, Apache is using
>> paid-subscription (possibly for unlimited concurrent tests). So mis-using
>> Pull Requests to test your change/commit will result in a slightly bigger
>> bill that ASF receives.
>> Hope this is somehow helpful for folks who would like to contribute.
> Sai Phanindhra,
> Ph: +91 9043258999