Fix dra flaky test: use exec env instead logs
#4531
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Signed-off-by: JesseStutler <[email protected]>
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Summary of Changes
Hello @JesseStutler, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
I've addressed a known flakiness issue in the Dynamic Resource Allocation (DRA) end-to-end tests. The previous method of verifying environment variables by inspecting pod logs was prone to race conditions. This change updates the test logic to directly execute the env command within the test pods once they are running, providing a more robust and reliable way to assert the presence of expected environment variables. This should significantly improve the stability of the DRA E2E test suite.
Highlights
- Reliable Environment Variable Checking: The core change involves switching from checking environment variables by parsing pod logs (which could be subject to race conditions) to directly executing the
envcommand within the running container usinge2epod.ExecWithOptionsContext. This ensures that the environment variables are retrieved reliably after the pod is confirmed to be running. - Refactored Test Helper Functions: The
testPodandtestContainerEnvfunctions were refactored to accept a*framework.Frameworkinstance, providing a more consistent and direct way to access Kubernetes client functionalities and other testing utilities. - Simplified Test Pod Creation: The
pod()function now creates a simpler pod that effectively pauses, as theenvcommand is no longer part of the pod's initial command. This streamlines the test pod's behavior, focusing its purpose on being a target forexeccommands.
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/kind flake |
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/approve |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: Monokaix The full list of commands accepted by this bot can be found here. The pull request process is described here
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/cc @lowang-bh @hwdef @archlitchi Could you put an LGTM for this PR? |
4 participants
What type of PR is this?
/area flaky
What this PR does / why we need it:
DRA sometimes failed recently: https://github.com/volcano-sh/volcano/actions/runs/16809889541/job/47612203028?pr=4517, this PR can fix this: kubernetes/kubernetes#130141, it's because that previously, "env" ran as the command inside the container and its log output
was checked. That suffered from a race because even though the pod might be
reported as running, there's no guarantee that the command has really produced
output and that this output has been captured. Therefore, we might use
exec envinstead, if the pod is already running,exec envcan get the expected resultWhich issue(s) this PR fixes:
NONE
Special notes for your reviewer:
Does this PR introduce a user-facing change?