4938455b26
Automatic merge from submit-queue (batch tested with PRs 49133, 51557, 51749, 50842, 52018) Charges quota only for initialized objects Partially fix https://github.com/kubernetes/kubernetes/issues/51842. Based on https://github.com/kubernetes/kubernetes/pull/51733/files. Only the commit "Don't charge quota when creating/updating an uninitialized object" is new. The old plan was to charge quota for each update of uninitialized object. This PR makes the quota admission only charges the update that removes the last pending initializer. Because * https://github.com/kubernetes/kubernetes/pull/51247, which lets sharedInformer see uninitialized objects, is not making the code freeze deadline. Hence, the quota replenishing controller won't capture deletion of uninitialized objects. We will leak quota if we charge quota for uninitialized objects. * @lavalamp @erictune pointed out calculating/reserving quota is expensive, we should avoid doing it for every initializer update. * My original argument was that quota admission should fail early so that user can easily figure out which initializer causes the quota outage. @lavalamp @erictune convinced me that user could easily figure the culprit if they watch the initialization process. |
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Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
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