.github/workflows: Update the checkouts action to use the v1 version #2463
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Update any relevant workflows and downgrade the checkouts action from the v2 to v1 version. This change is predicated on the problematic checkouts@v2 behavior that can lead to an increased change of regressing when landing changes to the default branch (e.g. master/main). This is because there's an existing bug in the v2 world where PRs can checkout the wrong HEAD commit, leading to scenarios where you're testing against an out-of-date commit compared to what's in the master branch. A concrete use case is when a PR is opened, and that PR checks out the current HEAD commit from master, and then a change lands in the master branch, and any subsequent workflow retries for that PR will result in that previous HEAD commit being checked out. There are workarounds that exist, like rebasing the existing PR, or like explicitly pointing the ref to the default branch, but this interaction isn't ideal with workflows are triggered on pushes to branches on top of reacting to pull request triggers. The simplest solution is to revert back to the v1 version and find a better longer term solution. Signed-off-by: timflannagan <timflannagan@gmail.com>
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: awgreene, timflannagan The full list of commands accepted by this bot can be found here. The pull request process is described here
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Update any relevant workflows and downgrade the checkouts action from
the v2 to v1 version. This change is predicated on the problematic
checkouts@v2 behavior that can lead to an increased change of regressing
when landing changes to the default branch (e.g. master/main). This is
because there's an existing bug in the v2 world where PRs can checkout
the wrong HEAD commit, leading to scenarios where you're testing against
an out-of-date commit compared to what's in the master branch.
A concrete use case is when a PR is opened, and that PR checks out the
current HEAD commit from master, and then a change lands in the master
branch, and any subsequent workflow retries for that PR will result in
that previous HEAD commit being checked out. There are workarounds that
exist, like rebasing the existing PR, or like explicitly pointing the
ref to the default branch, but this interaction isn't ideal with workflows
are triggered on pushes to branches on top of reacting to pull request
triggers. The simplest solution is to revert back to the v1 version and
find a better longer term solution.
Signed-off-by: timflannagan timflannagan@gmail.com
Description of the change:
Motivation for the change:
Reviewer Checklist
/doc