OCPBUGS-17157: pkg/controller: use a metadata watch for CRDs #3014
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@stevekuznetsov: This pull request references Jira Issue OCPBUGS-17157, which is valid. The bug has been moved to the POST state. 3 validation(s) were run on this bug
Requesting review from QA contact: The bug has been updated to refer to the pull request using the external bug tracker. In response to this:
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| @@ -64,7 +64,7 @@ ifeq (, $(wildcard $(KUBEBUILDER_ASSETS)/kube-apiserver)) | |||
| endif | |||
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| cover.out: | |||
| go test $(MOD_FLAGS) -tags "json1" -v -race -coverprofile=cover.out -covermode=atomic \ | |||
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Not necessary but the DX of watching 10k lines of output scroll by on success makes it impossible to find test failures and should be an anti-pattern.
| @@ -1183,7 +1193,7 @@ func (a *Operator) handleClusterServiceVersionDeletion(obj interface{}) { | |||
| } | |||
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| for i, crdName := range desc.ConversionCRDs { | |||
| crd, err := a.lister.APIExtensionsV1().CustomResourceDefinitionLister().Get(crdName) | |||
| crd, err := a.opClient.ApiextensionsInterface().ApiextensionsV1().CustomResourceDefinitions().Get(context.TODO(), crdName, metav1.GetOptions{}) | |||
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This is the crux of the trade-off. In the rare case that a CSV is deleted, we incur server cost and latency to do a live GET for the data we need. Better than holding onto 20MiB of every CRD ever when we would only ever be concerned with a tiny subset, and with the spec of that tiny subset in an even smaller set of cases.
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But it's an improvement...
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: stevekuznetsov, tmshort The full list of commands accepted by this bot can be found here. The pull request process is described here
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Let me dig into e2e, this passes locally for me ... :| |
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Reproducing the failure locally, looking into it. |
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Using a full LIST+WATCH is an optimization, with trade-offs. Holding the state of the world for CRDs in memory when we rarely, if ever, actually need to access them is a bad use of that trade-off, especially when the sum total size of CRDs on even the most basic cluster is O(20MiB). Signed-off-by: Steve Kuznetsov <skuznets@redhat.com>
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@tmshort should be good to go now |
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/lgtm |
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@stevekuznetsov: Jira Issue OCPBUGS-17157: Some pull requests linked via external trackers have merged:
The following pull requests linked via external trackers have not merged: These pull request must merge or be unlinked from the Jira bug in order for it to move to the next state. Once unlinked, request a bug refresh with Jira Issue OCPBUGS-17157 has not been moved to the MODIFIED state. In response to this:
Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. |
Using a full LIST+WATCH is an optimization, with trade-offs. Holding the state of the world for CRDs in memory when we rarely, if ever, actually need to access them is a bad use of that trade-off, especially when the sum total size of CRDs on even the most basic cluster is O(20MiB).