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kubernetes/staging
Kubernetes Submit Queue 52d87de107 Merge pull request #54237 from lichuqiang/apimachinery_fix
Automatic merge from submit-queue (batch tested with PRs 52717, 54568, 54452, 53997, 54237). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix bug in func OnError() of apimachinery in case time moves backwards for any reason

**What this PR does / why we need it**:
in func OnError() of ErrorHandlers in apimachinery
```
func (r *rudimentaryErrorBackoff) OnError(error) {
	r.lastErrorTimeLock.Lock()
	defer r.lastErrorTimeLock.Unlock()
	d := time.Since(r.lastErrorTime)
	if d < 0 {
		time.Sleep(r.minPeriod - d)
	}
	r.lastErrorTime = time.Now()
}
```
it is expected to go on sleep for some time if not meet the minPeriod. However, if time happens hops to the past in the process. `d := time.Since(r.lastErrorTime)` would be a negative number, thus, it may sleep a lot longer than we expected.

The period for sleep should be reseted if time hops

**Which issue this PR fixes**
 fixes #54236


**Release note**:

```release-note
NONE
```
2017-10-25 23:10:42 -07:00
..
2017-04-19 15:58:09 -04:00
2017-10-19 15:46:36 +01:00

External Repository Staging Area

This directory is the staging area for packages that have been split to their own repository. The content here will be periodically published to respective top-level k8s.io repositories.

Repositories currently staged here:

The code in the staging/ directory is authoritative, i.e. the only copy of the code. You can directly modify such code.

Using staged repositories from Kubernetes code

Kubernetes code uses the repositories in this directory via symlinks in the vendor/k8s.io directory into this staging area. For example, when Kubernetes code imports a package from the k8s.io/client-go repository, that import is resolved to staging/src/k8s.io/client-go relative to the project root:

// pkg/example/some_code.go
package example

import (
  "k8s.io/client-go/dynamic" // resolves to staging/src/k8s.io/client-go/dynamic
)

Once the change-over to external repositories is complete, these repositories will actually be vendored from k8s.io/<package-name>.