lhotari opened a new pull request #8393:
URL: https://github.com/apache/pulsar/pull/8393
### Motivation
Currently a single user can cause the Pulsar CI to get overloaded when
commits are pushed to a PR branch frequently, one by one. To mitigate this
issue, cancel any previous Github Actions runs that are not completed for a
given workflow,
for a particular branch / PR. This can be achieved by using the
https://github.com/marketplace/actions/cancel-workflow-action .
[There are multiple cancel actions
available](https://github.community/t/github-actions-cancel-redundant-builds-not-solved/16025/22).
This particular one was picked based on its popularity.
### Modifications
Append each workflow with the cancel workflow action step.
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