Let branch pipeline wait for previous branch pipeline

Question

We have a branch pipeline that creates a new git tag. If multiple PRs get merged at around the same time, this branch pipeline is started multiple times. Now there could be race conditions, where the pipelines are failing, because the previous ones have not finished pushing the new tag.

Is there a way to let a branch pipeline wait until the previous one has finished?

Aron Gombas _Midori_ · Answer

@Marcus We have a similar use case, potential race condition between parallel builds, and we use deployment concurrency control to prevent problems.

It effectively halts the second build when it tries to start, but it will not resume that when the first build completes. So, it is not perfect, but better than nothing.

Theodora Boudale · Answer

Hi Marcus,

You could use deployments for certain steps of the branch pipeline:

* https://support.atlassian.com/bitbucket-cloud/docs/set-up-and-monitor-bitbucket-deployments/

At the moment, this is the only way to prevent certain steps of different pipelines to run at the same time. If a deployment step is running, then deployment steps to the same environment from subsequent pipelines will be paused. Please keep in mind that paused deployment steps will need to be resumed manually, there is no automatic resuming.

We have a feature request for automatically resuming paused deployment steps:

* https://jira.atlassian.com/browse/BCLOUD-16304

You can check the pinned comment in that request from one of Bitbucket's product managers and provide feedback, this is something our team is planning to work on.

We have a different feature request for concurrency control in non-deployment steps that you can also vote for and leave feedback:

* https://jira.atlassian.com/browse/BCLOUD-16262

Please feel free to let me know if you have any questions.

Kind regards,
Theodora