MEDIUM: Cancel merge group checks when queue is interrupted

[purajit]

Of what I can tell, when a queue is interrupted (for example, with a jumped PR, or when a PR is removed), the corresponding merge_group checks are not cancelled. This adds a huge amount of CI burden often at a time where it cannot be afforded. For Terraform repos, this additionally makes the problem of lock-waits exponentially worse.

[ryanmio]

GitHub doesn't automatically cancel merge group checks on queue interruption, it requires manual intervention or a custom script to cancel checks through the API using POST /repos/:owner/:repo/check-runs/:check_run_id/cancel. No direct solution exists for your specific issue

[nive-copia]

This is a great feature to have. Pulling a PR out of the merge queue should kill all the running checks.

[nive-copia]

GitHub doesn't automatically cancel merge group checks on queue interruption, it requires manual intervention or a custom script to cancel checks through the API using POST /repos/:owner/:repo/check-runs/:check_run_id/cancel. No direct solution exists for your specific issue

Hi @ryanmio : To implement cancelling the run_id, how we determine the event change from merge_group back to pull_request? And how can we pass the run id context when the state changes? Appreciate ideas on this.

[ryanmio]

To detect a state change, you can use GitHub Webhooks listening for pull_request or check_run events. For passing the run_id, either store it in a database or use a shared cache that gets updated when the state changes. Then use this run_id to cancel the check.

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[purajit]

Is there any action that can keep this open?