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let garbage collector send orphaning patches in parallel

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This commit is contained in:
Chao Xu 2017-07-24 13:56:39 -07:00
parent 84db0a9487
commit 5e7d7c00a2
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"
@ -409,17 +410,30 @@ 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())
}