fix: benchmark container volume mounts update when base model exists #198
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Summary of Changes
Hello @carlory, 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!
This pull request resolves a critical bug that prevented benchmark containers from correctly mounting model paths under specific configuration scenarios. The solution involves a targeted refactoring of a key utility function responsible for managing volume mounts, making it more explicit and robust by directly providing the necessary model identification information. This ensures that model paths are consistently mounted when a base model is present.
Highlights
- Bug Fix: Benchmark Container Volume Mounts: I've addressed a bug where the benchmark container failed to mount the model path correctly. This occurred specifically when the base model was defined in
isvc.Spec.Modelbutisvc.Spec.Predictor.Modelwas nil, leading to an incorrect determination of whether the model path should be mounted. - Refactor:
UpdateVolumeMountsUtility Function: TheUpdateVolumeMountsutility function inpkg/controller/v1beta1/benchmark/utils/utils.gohas been refactored. It now directly accepts thebaseModelNameas a string argument, simplifying its signature and internal logic. This removes its previous dependency on the fullInferenceServiceobject for extracting the model name. - Code Consistency and Test Updates: The call site for
UpdateVolumeMountsinpkg/controller/v1beta1/benchmark/controller.gohas been updated to align with the new function signature, passing thebaseModelNamedirectly. Corresponding unit tests inpkg/controller/v1beta1/benchmark/utils/utils_test.gowere also modified to reflect these changes, ensuring continued test coverage and correctness.
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Code Review
This pull request fixes a bug where the benchmark container's volume mounts were not correctly updated when the base model was specified via isvc.Spec.Model. The fix refactors UpdateVolumeMounts to be independent of the InferenceService object, which is a good design improvement. The tests have been updated accordingly.
I've identified a potential panic in the updated UpdateVolumeMounts function if the base model's storage path is not defined. I've provided a suggestion to make the function safer and also recommended adding test cases to cover this scenario.
| func UpdateVolumeMounts(isvc *v1beta1.InferenceService, container *v1.Container, baseModel *v1beta1.BaseModelSpec) { | ||
| if isvc.Spec.Predictor.Model == nil || isvc.Spec.Predictor.Model.BaseModel == nil || baseModel == nil { | ||
| func UpdateVolumeMounts(container *v1.Container, baseModelName string, baseModel *v1beta1.BaseModelSpec) { | ||
| if baseModelName == "" || baseModel == nil { |
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This function could panic if baseModel.Storage or baseModel.Storage.Path is nil. The code at lines 139 and 145 dereferences baseModel.Storage.Path without checking if baseModel.Storage or baseModel.Storage.Path are nil.
Please add a check to ensure baseModel.Storage and baseModel.Storage.Path are not nil before proceeding.
| if baseModelName == "" || baseModel == nil { | |
| if baseModelName == "" || baseModel == nil || baseModel.Storage == nil || baseModel.Storage.Path == nil { | |
| return | |
| } |
| name: "without base model", | ||
| container: &v1.Container{}, | ||
| want: &v1.Container{}, | ||
| }, |
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To improve test coverage and prevent future regressions, it would be beneficial to add test cases for when baseModel is provided but its Storage or Storage.Path fields are nil. This will ensure the function handles these edge cases gracefully without panicking, especially after the recommended change in utils.go.
What type of PR is this?
/kind bug
What this PR does / why we need it:
when base model can be obtained from
isvc.Spec.Modelandisvc.Spec.Predictor.Modelis nil, the model path won't be mounted. it is not correct.Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Does this PR introduce a user-facing change?