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Merge pull request #49516 from caesarxuchao/parallel-patch

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Automatic merge from submit-queue (batch tested with PRs 48360, 48469, 49576, 49516, 49558)

Let garbage collector send orphaning patches in parallel

Garbage collector sends orphaning patches in parallel now.
This commit is contained in:
Kubernetes Submit Queue 2017-07-26 13:02:43 -07:00 committed by GitHub
commit 89525c62fd
1 changed files with 24 additions and 10 deletions
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34
pkg/controller/garbagecollector/garbagecollector.go
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@ -18,6 +18,7 @@ package garbagecollector
import (
"fmt"
"sync"
"time"
"github.com/golang/glog"
@ -410,17 +411,30 @@ func (gc *GarbageCollector) processDeletingDependentsItem(item *node) error {
// dependents are copies of pointers to the owner's dependents, they don't need to be locked.
func (gc *GarbageCollector) orphanDependents(owner objectReference, dependents []*node) error {
var errorsSlice []error
for _, dependent := range dependents {
// the dependent.identity.UID is used as precondition
patch := deleteOwnerRefPatch(dependent.identity.UID, owner.UID)
_, err := gc.patchObject(dependent.identity, patch)
// note that if the target ownerReference doesn't exist in the
// dependent, strategic merge patch will NOT return an error.
if err != nil && !errors.IsNotFound(err) {
errorsSlice = append(errorsSlice, fmt.Errorf("orphaning %s failed, %v", dependent.identity, err))
}
errCh := make(chan error, len(dependents))
wg := sync.WaitGroup{}
wg.Add(len(dependents))
for i := range dependents {
go func(dependent *node) {
defer wg.Done()
// the dependent.identity.UID is used as precondition
patch := deleteOwnerRefPatch(dependent.identity.UID, owner.UID)
_, err := gc.patchObject(dependent.identity, patch)
// note that if the target ownerReference doesn't exist in the
// dependent, strategic merge patch will NOT return an error.
if err != nil && !errors.IsNotFound(err) {
errCh <- fmt.Errorf("orphaning %s failed, %v", dependent.identity, err)
}
}(dependents[i])
}
wg.Wait()
close(errCh)
var errorsSlice []error
for e := range errCh {
errorsSlice = append(errorsSlice, e)
}
if len(errorsSlice) != 0 {
return fmt.Errorf("failed to orphan dependents of owner %s, got errors: %s", owner, utilerrors.NewAggregate(errorsSlice).Error())
}