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replication resync: fix queueing (#17775) 

Assign resync of all versions of object to the same worker to avoid locking
contention. Fixes parallel resync implementation in #16707
This commit is contained in:
Poorna 2023-08-01 11:51:15 -07:00 committed by GitHub
parent b0f0e53bba
commit 311380f8cb
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 112 additions and 77 deletions
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1
cmd/bucket-replication-utils.go
View File

@ -720,6 +720,7 @@ type TargetReplicationResyncStatus struct {
// Last bucket/object replicated.
Bucket string `json:"-" msg:"bkt"`
Object string `json:"-" msg:"obj"`
Error error `json:"-" msg:"-"`
}
// BucketReplicationResyncStatus captures current replication resync status

174
cmd/bucket-replication.go
View File

@ -51,7 +51,6 @@ import (
"github.com/minio/minio/internal/hash"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/minio/internal/logger"
"github.com/minio/pkg/workers"
"github.com/zeebo/xxh3"
)
@ -2440,12 +2439,12 @@ func (s *replicationResyncer) resyncBucket(ctx context.Context, objectAPI Object
objInfoCh := make(chan ObjectInfo)
cfg, err := getReplicationConfig(ctx, opts.bucket)
if err != nil {
logger.LogIf(ctx, fmt.Errorf("Replication resync of %s for arn %s failed with %w", opts.bucket, opts.arn, err))
logger.LogIf(ctx, fmt.Errorf("replication resync of %s for arn %s failed with %w", opts.bucket, opts.arn, err))
return
}
tgts, err := globalBucketTargetSys.ListBucketTargets(ctx, opts.bucket)
if err != nil {
logger.LogIf(ctx, fmt.Errorf("Replication resync of %s for arn %s failed %w", opts.bucket, opts.arn, err))
logger.LogIf(ctx, fmt.Errorf("replication resync of %s for arn %s failed %w", opts.bucket, opts.arn, err))
return
}
rcfg := replicationConfig{
@ -2458,12 +2457,12 @@ func (s *replicationResyncer) resyncBucket(ctx context.Context, objectAPI Object
TargetArn: opts.arn,
})
if len(tgtArns) != 1 {
logger.LogIf(ctx, fmt.Errorf("Replication resync failed for %s - arn specified %s is missing in the replication config", opts.bucket, opts.arn))
logger.LogIf(ctx, fmt.Errorf("replication resync failed for %s - arn specified %s is missing in the replication config", opts.bucket, opts.arn))
return
}
tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, opts.arn)
if tgt == nil {
logger.LogIf(ctx, fmt.Errorf("Replication resync failed for %s - target could not be created for arn %s", opts.bucket, opts.arn))
logger.LogIf(ctx, fmt.Errorf("replication resync failed for %s - target could not be created for arn %s", opts.bucket, opts.arn))
return
}
// mark resync status as resync started
@ -2486,7 +2485,83 @@ func (s *replicationResyncer) resyncBucket(ctx context.Context, objectAPI Object
if st.ResyncStatus == ResyncStarted || st.ResyncStatus == ResyncFailed {
lastCheckpoint = st.Object
}
workers, err := workers.New(resyncParallelRoutines)
workers := make([]chan ReplicateObjectInfo, resyncParallelRoutines)
resultCh := make(chan TargetReplicationResyncStatus, 1)
defer close(resultCh)
var wg sync.WaitGroup
for i := 0; i < resyncParallelRoutines; i++ {
wg.Add(1)
workers[i] = make(chan ReplicateObjectInfo, 100)
i := i
go func(ctx context.Context, idx int) {
defer wg.Done()
for roi := range workers[idx] {
select {
case <-ctx.Done():
return
case <-s.resyncCancelCh:
default:
}
traceFn := s.trace(tgt.ResetID, fmt.Sprintf("%s/%s (%s)", opts.bucket, roi.Name, roi.VersionID))
if roi.DeleteMarker || !roi.VersionPurgeStatus.Empty() {
versionID := ""
dmVersionID := ""
if roi.VersionPurgeStatus.Empty() {
dmVersionID = roi.VersionID
} else {
versionID = roi.VersionID
}
doi := DeletedObjectReplicationInfo{
DeletedObject: DeletedObject{
ObjectName: roi.Name,
DeleteMarkerVersionID: dmVersionID,
VersionID: versionID,
ReplicationState: roi.getReplicationState(),
DeleteMarkerMTime: DeleteMarkerMTime{roi.ModTime},
DeleteMarker: roi.DeleteMarker,
},
Bucket: roi.Bucket,
OpType: replication.ExistingObjectReplicationType,
EventType: ReplicateExistingDelete,
}
replicateDelete(ctx, doi, objectAPI)
} else {
roi.OpType = replication.ExistingObjectReplicationType
roi.EventType = ReplicateExisting
replicateObject(ctx, roi, objectAPI)
}
_, err = tgt.StatObject(ctx, tgt.Bucket, roi.Name, minio.StatObjectOptions{
VersionID: roi.VersionID,
Internal: minio.AdvancedGetOptions{
ReplicationProxyRequest: "false",
},
})
st := TargetReplicationResyncStatus{
Object: roi.Name,
Bucket: roi.Bucket,
}
if err != nil {
if roi.DeleteMarker && isErrMethodNotAllowed(ErrorRespToObjectError(err, opts.bucket, roi.Name)) {
st.ReplicatedCount++
} else {
st.FailedCount++
}
} else {
st.ReplicatedCount++
st.ReplicatedSize += roi.Size
}
traceFn(err)
select {
case <-ctx.Done():
return
case <-s.resyncCancelCh:
return
case resultCh <- st:
}
}
}(ctx, i)
}
for obj := range objInfoCh {
select {
case <-s.resyncCancelCh:
@ -2500,71 +2575,30 @@ func (s *replicationResyncer) resyncBucket(ctx context.Context, objectAPI Object
continue
}
lastCheckpoint = ""
obj := obj
workers.Take()
go func() {
defer workers.Give()
roi := getHealReplicateObjectInfo(obj, rcfg)
if !roi.ExistingObjResync.mustResync() {
return
}
traceFn := s.trace(tgt.ResetID, fmt.Sprintf("%s/%s (%s)", opts.bucket, roi.Name, roi.VersionID))
if roi.DeleteMarker || !roi.VersionPurgeStatus.Empty() {
versionID := ""
dmVersionID := ""
if roi.VersionPurgeStatus.Empty() {
dmVersionID = roi.VersionID
} else {
versionID = roi.VersionID
}
doi := DeletedObjectReplicationInfo{
DeletedObject: DeletedObject{
ObjectName: roi.Name,
DeleteMarkerVersionID: dmVersionID,
VersionID: versionID,
ReplicationState: roi.getReplicationState(),
DeleteMarkerMTime: DeleteMarkerMTime{roi.ModTime},
DeleteMarker: roi.DeleteMarker,
},
Bucket: roi.Bucket,
OpType: replication.ExistingObjectReplicationType,
EventType: ReplicateExistingDelete,
}
replicateDelete(ctx, doi, objectAPI)
} else {
roi.OpType = replication.ExistingObjectReplicationType
roi.EventType = ReplicateExisting
replicateObject(ctx, roi, objectAPI)
}
_, err = tgt.StatObject(ctx, tgt.Bucket, roi.Name, minio.StatObjectOptions{
VersionID: roi.VersionID,
Internal: minio.AdvancedGetOptions{
ReplicationProxyRequest: "false",
},
})
st := TargetReplicationResyncStatus{
Object: roi.Name,
Bucket: roi.Bucket,
}
success := true
if err != nil {
if roi.DeleteMarker && isErrMethodNotAllowed(ErrorRespToObjectError(err, opts.bucket, roi.Name)) {
st.ReplicatedCount++
} else {
st.FailedCount++
success = false
}
} else {
st.ReplicatedCount++
st.ReplicatedSize += roi.Size
}
s.incStats(st, opts)
traceFn(err)
globalSiteResyncMetrics.updateMetric(roi, success, opts.resyncID)
}()
roi := getHealReplicateObjectInfo(obj, rcfg)
if !roi.ExistingObjResync.mustResync() {
continue
}
select {
case <-s.resyncCancelCh:
return
case <-ctx.Done():
return
default:
h := xxh3.HashString(roi.Bucket + roi.Name)
workers[h%uint64(resyncParallelRoutines)] <- roi
}
}
workers.Wait()
for i := 0; i < resyncParallelRoutines; i++ {
close(workers[i])
}
go func() {
for r := range resultCh {
s.incStats(r, opts)
globalSiteResyncMetrics.updateMetric(r, opts.resyncID)
}
}()
wg.Wait()
resyncStatus = ResyncCompleted
}

12
cmd/site-replication-utils.go
View File

@ -292,22 +292,22 @@ func siteResyncStatus(currSt ResyncStatusType, m map[string]ResyncStatusType) Re
}
// update resync metrics per object
func (sm *siteResyncMetrics) updateMetric(roi ReplicateObjectInfo, success bool, resyncID string) {
func (sm *siteResyncMetrics) updateMetric(r TargetReplicationResyncStatus, resyncID string) {
if !globalSiteReplicationSys.isEnabled() {
return
}
sm.Lock()
defer sm.Unlock()
s := sm.resyncStatus[resyncID]
if success {
if r.ReplicatedCount > 0 {
s.ReplicatedCount++
s.ReplicatedSize += roi.Size
s.ReplicatedSize += r.ReplicatedSize
} else {
s.FailedCount++
s.FailedSize += roi.Size
s.FailedSize += r.FailedSize
}
s.Bucket = roi.Bucket
s.Object = roi.Name
s.Bucket = r.Bucket
s.Object = r.Object
s.LastUpdate = UTCNow()
sm.resyncStatus[resyncID] = s
}

2
docs/bucket/replication/setup_2site_existing_replication.sh
View File

@ -84,7 +84,7 @@ remote_arn=$(./mc replicate ls sitea/bucket --json | jq -r .rule.Destination.Buc
sleep 1
./mc replicate resync start sitea/bucket/ --remote-bucket "${remote_arn}"
sleep 30s ## sleep for 30s idea is that we give 300ms per object.
sleep 10s ## sleep for 10s idea is that we give 100ms per object.
count=$(./mc replicate resync status sitea/bucket --remote-bucket "${remote_arn}" --json | jq .resyncInfo.target[].replicationCount)