[#1694] metabase: Do not ignore errors on delete

Change-Id: I7aa296456b9a594c6adcb65421157a51934f2994
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/metabase/batch.go

@@ -0,0 +1,148 @@
+// NOTE: code is partially taken from https://github.com/etcd-io/bbolt/blob/v1.3.10/db.go
+
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 Ben Johnson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+package meta
+
+import (
+	"errors"
+	"fmt"
+	"sync"
+	"time"
+
+	"go.etcd.io/bbolt"
+)
+
+type fn func(*bbolt.Tx, *bucketCache) error
+
+type call struct {
+	fn  fn
+	err chan<- error
+}
+
+type batch struct {
+	db    *DB
+	timer *time.Timer
+	start sync.Once
+	calls []call
+}
+
+func (b *batch) trigger() {
+	b.start.Do(b.run)
+}
+
+func (b *batch) run() {
+	b.db.batchMtx.Lock()
+	b.timer.Stop()
+	// Make sure no new work is added to this batch, but don't break
+	// other batches.
+	if b.db.batch == b {
+		b.db.batch = nil
+	}
+	b.db.batchMtx.Unlock()
+
+	bc := newBucketCache()
+retry:
+	for len(b.calls) > 0 {
+		failIdx := -1
+		err := b.db.boltDB.Update(func(tx *bbolt.Tx) error {
+			for i, c := range b.calls {
+				if err := safelyCall(c.fn, tx, bc); err != nil {
+					failIdx = i
+					return err
+				}
+			}
+			return nil
+		})
+
+		if failIdx >= 0 {
+			// take the failing transaction out of the batch. it's
+			// safe to shorten b.calls here because db.batch no longer
+			// points to us, and we hold the mutex anyway.
+			c := b.calls[failIdx]
+			b.calls[failIdx], b.calls = b.calls[len(b.calls)-1], b.calls[:len(b.calls)-1]
+			// tell the submitter re-run it solo, continue with the rest of the batch
+			c.err <- errTrySolo
+			continue retry
+		}
+
+		// pass success, or bolt internal errors, to all callers
+		for _, c := range b.calls {
+			c.err <- err
+		}
+		break retry
+	}
+}
+
+func safelyCall(fn func(*bbolt.Tx, *bucketCache) error, tx *bbolt.Tx, bc *bucketCache) (err error) {
+	defer func() {
+		if p := recover(); p != nil {
+			err = panicked{p}
+		}
+	}()
+	return fn(tx, bc)
+}
+
+func (db *DB) Batch(fn fn) error {
+	errCh := make(chan error, 1)
+
+	db.batchMtx.Lock()
+	if (db.batch == nil) || (db.batch != nil && len(db.batch.calls) >= db.boltBatchSize) {
+		// There is no existing batch, or the existing batch is full; start a new one.
+		db.batch = &batch{
+			db: db,
+		}
+		db.batch.timer = time.AfterFunc(db.boltBatchDelay, db.batch.trigger)
+	}
+	db.batch.calls = append(db.batch.calls, call{fn: fn, err: errCh})
+	if len(db.batch.calls) >= db.boltBatchSize {
+		// wake up batch, it's ready to run
+		go db.batch.trigger()
+	}
+	db.batchMtx.Unlock()
+
+	err := <-errCh
+	if err == errTrySolo {
+		err = db.boltDB.Update(func(tx *bbolt.Tx) error {
+			return fn(tx, nil)
+		})
+	}
+	return err
+}
+
+// errTrySolo is a special sentinel error value used for signaling that a
+// transaction function should be re-run. It should never be seen by
+// callers.
+var errTrySolo = errors.New("batch function returned an error and should be re-run solo")
+
+type panicked struct {
+	reason interface{}
+}
+
+func (p panicked) Error() string {
+	if err, ok := p.reason.(error); ok {
+		return err.Error()
+	}
+	return fmt.Sprintf("panic: %v", p.reason)
+}

pkg/local_object_storage/metabase/bucket_cache.go

@@ -9,8 +9,20 @@ type bucketCache struct {
 	locked    *bbolt.Bucket
 	graveyard *bbolt.Bucket
 	garbage   *bbolt.Bucket
+	expEpoch  *bbolt.Bucket
+	contVol   *bbolt.Bucket
+	contCount *bbolt.Bucket
+	shardInfo *bbolt.Bucket
 	expired   map[cid.ID]*bbolt.Bucket
 	primary   map[cid.ID]*bbolt.Bucket
+	parent    map[cid.ID]*bbolt.Bucket
+	tombstone map[cid.ID]*bbolt.Bucket
+	lockers   map[cid.ID]*bbolt.Bucket
+	small     map[cid.ID]*bbolt.Bucket
+	root      map[cid.ID]*bbolt.Bucket
+	expObj    map[cid.ID]*bbolt.Bucket
+	split     map[cid.ID]*bbolt.Bucket
+	ecInfo    map[cid.ID]*bbolt.Bucket
 }
 
 func newBucketCache() *bucketCache {
@@ -38,6 +50,34 @@ func getGarbageBucket(bc *bucketCache, tx *bbolt.Tx) *bbolt.Bucket {
 	return getBucket(&bc.garbage, tx, garbageBucketName)
 }
 
+func getExpEpochToObjectBucket(bc *bucketCache, tx *bbolt.Tx) *bbolt.Bucket {
+	if bc == nil {
+		return tx.Bucket(expEpochToObjectBucketName)
+	}
+	return getBucket(&bc.expEpoch, tx, expEpochToObjectBucketName)
+}
+
+func getContainerVolumeBucket(bc *bucketCache, tx *bbolt.Tx) *bbolt.Bucket {
+	if bc == nil {
+		return tx.Bucket(containerVolumeBucketName)
+	}
+	return getBucket(&bc.contVol, tx, containerVolumeBucketName)
+}
+
+func getShardInfoBucket(bc *bucketCache, tx *bbolt.Tx) *bbolt.Bucket {
+	if bc == nil {
+		return tx.Bucket(shardInfoBucket)
+	}
+	return getBucket(&bc.shardInfo, tx, shardInfoBucket)
+}
+
+func getContainerCounterBucket(bc *bucketCache, tx *bbolt.Tx) *bbolt.Bucket {
+	if bc == nil {
+		return tx.Bucket(containerCounterBucketName)
+	}
+	return getBucket(&bc.contCount, tx, containerCounterBucketName)
+}
+
 func getBucket(cache **bbolt.Bucket, tx *bbolt.Tx, name []byte) *bbolt.Bucket {
 	if *cache != nil {
 		return *cache
@@ -65,6 +105,78 @@ func getPrimaryBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
 	return getMappedBucket(&bc.primary, tx, primaryBucketName, cnr)
 }
 
+func getParentBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = parentBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.parent, tx, parentBucketName, cnr)
+}
+
+func getTombstoneBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = tombstoneBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.tombstone, tx, tombstoneBucketName, cnr)
+}
+
+func getLockersBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = bucketNameLockers(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.lockers, tx, bucketNameLockers, cnr)
+}
+
+func getSmallBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = smallBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.small, tx, smallBucketName, cnr)
+}
+
+func getRootBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = rootBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.root, tx, rootBucketName, cnr)
+}
+
+func getObjToExpEpochBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = objectToExpirationEpochBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.expObj, tx, objectToExpirationEpochBucketName, cnr)
+}
+
+func getSplitBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = splitBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.split, tx, splitBucketName, cnr)
+}
+
+func getECInfoBucket(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket {
+	if bc == nil {
+		bucketName := make([]byte, bucketKeySize)
+		bucketName = ecInfoBucketName(cnr, bucketName)
+		return tx.Bucket(bucketName)
+	}
+	return getMappedBucket(&bc.ecInfo, tx, ecInfoBucketName, cnr)
+}
+
 func getMappedBucket(m *map[cid.ID]*bbolt.Bucket, tx *bbolt.Tx, nameFunc func(cid.ID, []byte) []byte, cnr cid.ID) *bbolt.Bucket {
 	value, ok := (*m)[cnr]
 	if ok {

pkg/local_object_storage/metabase/containers.go

@@ -100,8 +100,8 @@ func parseContainerSize(v []byte) uint64 {
 	return binary.LittleEndian.Uint64(v)
 }
 
-func changeContainerSize(tx *bbolt.Tx, id cid.ID, delta uint64, increase bool) error {
-	containerVolume := tx.Bucket(containerVolumeBucketName)
+func changeContainerSize(tx *bbolt.Tx, bc *bucketCache, id cid.ID, delta uint64, increase bool) error {
+	containerVolume := getContainerVolumeBucket(bc, tx)
 	key := make([]byte, cidSize)
 	id.Encode(key)
 

pkg/local_object_storage/metabase/counter.go

@@ -231,10 +231,10 @@ func (db *DB) ContainerCount(ctx context.Context, id cid.ID) (ObjectCounters, er
 	return result, metaerr.Wrap(err)
 }
 
-func (db *DB) incCounters(tx *bbolt.Tx, cnrID cid.ID, isUserObject bool) error {
-	b := tx.Bucket(shardInfoBucket)
+func (db *DB) incCounters(tx *bbolt.Tx, bc *bucketCache, cnrID cid.ID, isUserObject bool) error {
+	b := getShardInfoBucket(bc, tx)
 	if b == nil {
-		return db.incContainerObjectCounter(tx, cnrID, isUserObject)
+		return db.incContainerObjectCounter(tx, bc, cnrID, isUserObject)
 	}
 
 	if err := db.updateShardObjectCounterBucket(b, phy, 1, true); err != nil {
@@ -248,7 +248,7 @@ func (db *DB) incCounters(tx *bbolt.Tx, cnrID cid.ID, isUserObject bool) error {
 			return fmt.Errorf("increase user object counter: %w", err)
 		}
 	}
-	return db.incContainerObjectCounter(tx, cnrID, isUserObject)
+	return db.incContainerObjectCounter(tx, bc, cnrID, isUserObject)
 }
 
 func (db *DB) decShardObjectCounter(tx *bbolt.Tx, typ objectType, delta uint64) error {
@@ -338,8 +338,8 @@ func nextValue(existed, delta uint64, inc bool) uint64 {
 	return existed
 }
 
-func (db *DB) incContainerObjectCounter(tx *bbolt.Tx, cnrID cid.ID, isUserObject bool) error {
-	b := tx.Bucket(containerCounterBucketName)
+func (db *DB) incContainerObjectCounter(tx *bbolt.Tx, bc *bucketCache, cnrID cid.ID, isUserObject bool) error {
+	b := getContainerCounterBucket(bc, tx)
 	if b == nil {
 		return nil
 	}

pkg/local_object_storage/metabase/db.go

@@ -44,6 +44,9 @@ type DB struct {
 	boltDB *bbolt.DB
 
 	initialized bool
+
+	batchMtx sync.Mutex
+	batch    *batch
 }
 
 // Option is an option of DB constructor.

pkg/local_object_storage/metabase/delete.go

@@ -110,8 +110,8 @@ func (db *DB) Delete(ctx context.Context, prm DeletePrm) (DeleteRes, error) {
 	var err error
 	var res DeleteRes
 
-	err = db.boltDB.Batch(func(tx *bbolt.Tx) error {
-		res, err = db.deleteGroup(tx, prm.addrs)
+	err = db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
+		res, err = db.deleteGroup(tx, bc, prm.addrs)
 		return err
 	})
 	if err == nil {
@@ -127,7 +127,7 @@ func (db *DB) Delete(ctx context.Context, prm DeletePrm) (DeleteRes, error) {
 
 // deleteGroup deletes object from the metabase. Handles removal of the
 // references of the split objects.
-func (db *DB) deleteGroup(tx *bbolt.Tx, addrs []oid.Address) (DeleteRes, error) {
+func (db *DB) deleteGroup(tx *bbolt.Tx, bc *bucketCache, addrs []oid.Address) (DeleteRes, error) {
 	res := DeleteRes{
 		removedByCnrID: make(map[cid.ID]ObjectCounters),
 	}
@@ -135,7 +135,7 @@ func (db *DB) deleteGroup(tx *bbolt.Tx, addrs []oid.Address) (DeleteRes, error)
 	currEpoch := db.epochState.CurrentEpoch()
 
 	for i := range addrs {
-		r, err := db.delete(tx, addrs[i], refCounter, currEpoch)
+		r, err := db.delete(tx, bc, addrs[i], refCounter, currEpoch)
 		if err != nil {
 			return DeleteRes{}, err
 		}
@@ -149,7 +149,7 @@ func (db *DB) deleteGroup(tx *bbolt.Tx, addrs []oid.Address) (DeleteRes, error)
 
 	for _, refNum := range refCounter {
 		if refNum.cur == refNum.all {
-			err := db.deleteObject(tx, refNum.obj, true)
+			err := db.deleteObject(tx, bc, refNum.obj, true)
 			if err != nil {
 				return DeleteRes{}, err
 			}
@@ -243,16 +243,16 @@ type deleteSingleResult struct {
 // non-exist object is error-free). The second return value indicates if an
 // object was available before the removal (for calculating the logical object
 // counter). The third return value The fourth return value is removed object payload size.
-func (db *DB) delete(tx *bbolt.Tx, addr oid.Address, refCounter referenceCounter, currEpoch uint64) (deleteSingleResult, error) {
+func (db *DB) delete(tx *bbolt.Tx, bc *bucketCache, addr oid.Address, refCounter referenceCounter, currEpoch uint64) (deleteSingleResult, error) {
 	key := make([]byte, addressKeySize)
 	addrKey := addressKey(addr, key)
-	garbageBKT := tx.Bucket(garbageBucketName)
-	graveyardBKT := tx.Bucket(graveyardBucketName)
+	garbageBKT := getGarbageBucket(bc, tx)
+	graveyardBKT := getGraveyardBucket(bc, tx)
 
 	removeAvailableObject := inGraveyardWithKey(addrKey, graveyardBKT, garbageBKT) == 0
 
 	// unmarshal object, work only with physically stored (raw == true) objects
-	obj, err := db.get(tx, addr, key, false, true, currEpoch)
+	obj, err := db.getWithCache(bc, tx, addr, key, false, true, currEpoch)
 	if err != nil {
 		if client.IsErrObjectNotFound(err) {
 			addrKey = addressKey(addr, key)
@@ -293,7 +293,7 @@ func (db *DB) delete(tx *bbolt.Tx, addr oid.Address, refCounter referenceCounter
 		nRef, ok := refCounter[k]
 		if !ok {
 			nRef = &referenceNumber{
-				all: parentLength(tx, parAddr),
+				all: parentLength(tx, bc, parAddr),
 				obj: parent,
 			}
 
@@ -306,12 +306,12 @@ func (db *DB) delete(tx *bbolt.Tx, addr oid.Address, refCounter referenceCounter
 	isUserObject := IsUserObject(obj)
 
 	// remove object
-	err = db.deleteObject(tx, obj, false)
+	err = db.deleteObject(tx, bc, obj, false)
 	if err != nil {
 		return deleteSingleResult{}, fmt.Errorf("remove object: %w", err)
 	}
 
-	if err := deleteECRelatedInfo(tx, garbageBKT, obj, addr.Container(), refCounter); err != nil {
+	if err := deleteECRelatedInfo(tx, bc, obj, addr.Container(), refCounter); err != nil {
 		return deleteSingleResult{}, err
 	}
 
@@ -325,15 +325,16 @@ func (db *DB) delete(tx *bbolt.Tx, addr oid.Address, refCounter referenceCounter
 
 func (db *DB) deleteObject(
 	tx *bbolt.Tx,
+	bc *bucketCache,
 	obj *objectSDK.Object,
 	isParent bool,
 ) error {
-	err := delUniqueIndexes(tx, obj, isParent)
+	err := delUniqueIndexes(tx, bc, obj, isParent)
 	if err != nil {
 		return errFailedToRemoveUniqueIndexes
 	}
 
-	err = updateListIndexes(tx, obj, delListIndexItem)
+	err = updateListIndexes(tx, bc, obj, delListIndexItem, false)
 	if err != nil {
 		return fmt.Errorf("remove list indexes: %w", err)
 	}
@@ -345,7 +346,7 @@ func (db *DB) deleteObject(
 
 	if isParent {
 		// remove record from the garbage bucket, because regular object deletion does nothing for virtual object
-		garbageBKT := tx.Bucket(garbageBucketName)
+		garbageBKT := getGarbageBucket(bc, tx)
 		if garbageBKT != nil {
 			key := make([]byte, addressKeySize)
 			addrKey := addressKey(object.AddressOf(obj), key)
@@ -360,10 +361,10 @@ func (db *DB) deleteObject(
 }
 
 // parentLength returns amount of available children from parentid index.
-func parentLength(tx *bbolt.Tx, addr oid.Address) int {
+func parentLength(tx *bbolt.Tx, bc *bucketCache, addr oid.Address) int {
 	bucketName := make([]byte, bucketKeySize)
 
-	bkt := tx.Bucket(parentBucketName(addr.Container(), bucketName[:]))
+	bkt := getParentBucket(bc, tx, addr.Container())
 	if bkt == nil {
 		return 0
 	}
@@ -376,15 +377,16 @@ func parentLength(tx *bbolt.Tx, addr oid.Address) int {
 	return len(lst)
 }
 
-func delUniqueIndexItem(tx *bbolt.Tx, item namedBucketItem) {
-	bkt := tx.Bucket(item.name)
+func delUniqueIndexItem(item bucketItem) error {
+	bkt := item.bucket
 	if bkt != nil {
-		_ = bkt.Delete(item.key) // ignore error, best effort there
+		return bkt.Delete(item.key)
 	}
+	return nil
 }
 
-func delListIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
-	bkt := tx.Bucket(item.name)
+func delListIndexItem(item bucketItem) error {
+	bkt := item.bucket
 	if bkt == nil {
 		return nil
 	}
@@ -405,19 +407,16 @@ func delListIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
 
 	// if list empty, remove the key from <list> bucket
 	if len(lst) == 0 {
-		_ = bkt.Delete(item.key) // ignore error, best effort there
-
-		return nil
+		return bkt.Delete(item.key)
 	}
 
 	// if list is not empty, then update it
 	encodedLst, err := encodeList(lst)
 	if err != nil {
-		return nil // ignore error, best effort there
+		return err
 	}
 
-	_ = bkt.Put(item.key, encodedLst) // ignore error, best effort there
-	return nil
+	return bkt.Put(item.key, encodedLst)
 }
 
 func delFKBTIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
@@ -460,67 +459,79 @@ func hasAnyItem(b *bbolt.Bucket) bool {
 	return hasAnyItem
 }
 
-func delUniqueIndexes(tx *bbolt.Tx, obj *objectSDK.Object, isParent bool) error {
+func delUniqueIndexes(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, isParent bool) error {
 	addr := object.AddressOf(obj)
 
 	objKey := objectKey(addr.Object(), make([]byte, objectKeySize))
 	cnr := addr.Container()
-	bucketName := make([]byte, bucketKeySize)
+	var bkt *bbolt.Bucket
 
 	// add value to primary unique bucket
 	if !isParent {
 		switch obj.Type() {
 		case objectSDK.TypeRegular:
-			bucketName = primaryBucketName(cnr, bucketName)
+			bkt = getPrimaryBucket(bc, tx, cnr)
 		case objectSDK.TypeTombstone:
-			bucketName = tombstoneBucketName(cnr, bucketName)
+			bkt = getTombstoneBucket(bc, tx, cnr)
 		case objectSDK.TypeLock:
-			bucketName = bucketNameLockers(cnr, bucketName)
+			bkt = getLockersBucket(bc, tx, cnr)
 		default:
 			return ErrUnknownObjectType
 		}
 
-		delUniqueIndexItem(tx, namedBucketItem{
-			name: bucketName,
-			key:  objKey,
-		})
+		if err := delUniqueIndexItem(bucketItem{
+			bucket: bkt,
+			key:    objKey,
+		}); err != nil {
+			return err
+		}
 	} else {
-		delUniqueIndexItem(tx, namedBucketItem{
-			name: parentBucketName(cnr, bucketName),
-			key:  objKey,
-		})
+		if err := delUniqueIndexItem(bucketItem{
+			bucket: getParentBucket(bc, tx, cnr),
+			key:    objKey,
+		}); err != nil {
+			return err
+		}
 	}
 
-	delUniqueIndexItem(tx, namedBucketItem{ // remove from storage id index
-		name: smallBucketName(cnr, bucketName),
-		key:  objKey,
-	})
-	delUniqueIndexItem(tx, namedBucketItem{ // remove from root index
-		name: rootBucketName(cnr, bucketName),
-		key:  objKey,
-	})
+	if err := delUniqueIndexItem(bucketItem{ // remove from storage id index
+		bucket: getSmallBucket(bc, tx, cnr),
+		key:    objKey,
+	}); err != nil {
+		return err
+	}
+	if err := delUniqueIndexItem(bucketItem{ // remove from root index
+		bucket: getRootBucket(bc, tx, cnr),
+		key:    objKey,
+	}); err != nil {
+		return err
+	}
 
 	if expEpoch, ok := hasExpirationEpoch(obj); ok {
-		delUniqueIndexItem(tx, namedBucketItem{
-			name: expEpochToObjectBucketName,
-			key:  expirationEpochKey(expEpoch, cnr, addr.Object()),
-		})
-		delUniqueIndexItem(tx, namedBucketItem{
-			name: objectToExpirationEpochBucketName(cnr, make([]byte, bucketKeySize)),
-			key:  objKey,
-		})
+		if err := delUniqueIndexItem(bucketItem{
+			bucket: getExpEpochToObjectBucket(bc, tx),
+			key:    expirationEpochKey(expEpoch, cnr, addr.Object()),
+		}); err != nil {
+			return err
+		}
+		if err := delUniqueIndexItem(bucketItem{
+			bucket: getObjToExpEpochBucket(bc, tx, cnr),
+			key:    objKey,
+		}); err != nil {
+			return err
+		}
 	}
 
 	return nil
 }
 
-func deleteECRelatedInfo(tx *bbolt.Tx, garbageBKT *bbolt.Bucket, obj *objectSDK.Object, cnr cid.ID, refCounter referenceCounter) error {
+func deleteECRelatedInfo(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, cnr cid.ID, refCounter referenceCounter) error {
 	ech := obj.ECHeader()
 	if ech == nil {
 		return nil
 	}
-
-	hasAnyChunks := hasAnyECChunks(tx, ech, cnr)
+	garbageBKT := getGarbageBucket(bc, tx)
+	hasAnyChunks := hasAnyECChunks(tx, bc, ech, cnr)
 	// drop EC parent GC mark if current EC chunk is the last one
 	if !hasAnyChunks && garbageBKT != nil {
 		var ecParentAddress oid.Address
@@ -535,10 +546,12 @@ func deleteECRelatedInfo(tx *bbolt.Tx, garbageBKT *bbolt.Bucket, obj *objectSDK.
 
 	// also drop EC parent root info if current EC chunk is the last one
 	if !hasAnyChunks {
-		delUniqueIndexItem(tx, namedBucketItem{
-			name: rootBucketName(cnr, make([]byte, bucketKeySize)),
-			key:  objectKey(ech.Parent(), make([]byte, objectKeySize)),
-		})
+		if err := delUniqueIndexItem(bucketItem{
+			bucket: getRootBucket(bc, tx, cnr),
+			key:    objectKey(ech.Parent(), make([]byte, objectKeySize)),
+		}); err != nil {
+			return err
+		}
 	}
 
 	if ech.ParentSplitParentID() == nil {
@@ -557,7 +570,7 @@ func deleteECRelatedInfo(tx *bbolt.Tx, garbageBKT *bbolt.Bucket, obj *objectSDK.
 		return nil
 	}
 
-	if parentLength(tx, splitParentAddress) > 0 {
+	if parentLength(tx, bc, splitParentAddress) > 0 {
 		// linking object still exists, so leave split info and gc mark deletion for linking object processing
 		return nil
 	}
@@ -572,15 +585,14 @@ func deleteECRelatedInfo(tx *bbolt.Tx, garbageBKT *bbolt.Bucket, obj *objectSDK.
 	}
 
 	// drop split info
-	delUniqueIndexItem(tx, namedBucketItem{
-		name: rootBucketName(cnr, make([]byte, bucketKeySize)),
-		key:  objectKey(*ech.ParentSplitParentID(), make([]byte, objectKeySize)),
+	return delUniqueIndexItem(bucketItem{
+		bucket: getRootBucket(bc, tx, cnr),
+		key:    objectKey(*ech.ParentSplitParentID(), make([]byte, objectKeySize)),
 	})
-	return nil
 }
 
-func hasAnyECChunks(tx *bbolt.Tx, ech *objectSDK.ECHeader, cnr cid.ID) bool {
-	data := getFromBucket(tx, ecInfoBucketName(cnr, make([]byte, bucketKeySize)),
+func hasAnyECChunks(tx *bbolt.Tx, bc *bucketCache, ech *objectSDK.ECHeader, cnr cid.ID) bool {
+	data := getFromBucket(getECInfoBucket(bc, tx, cnr),
 		objectKey(ech.Parent(), make([]byte, objectKeySize)))
 	return len(data) > 0
 }

pkg/local_object_storage/metabase/exists.go

@@ -81,7 +81,7 @@ func (db *DB) Exists(ctx context.Context, prm ExistsPrm) (res ExistsRes, err err
 	currEpoch := db.epochState.CurrentEpoch()
 
 	err = db.boltDB.View(func(tx *bbolt.Tx) error {
-		res.exists, res.locked, err = db.exists(tx, prm.addr, prm.ecParentAddr, currEpoch)
+		res.exists, res.locked, err = db.exists(tx, newBucketCache(), prm.addr, prm.ecParentAddr, currEpoch)
 
 		return err
 	})
@@ -89,10 +89,10 @@ func (db *DB) Exists(ctx context.Context, prm ExistsPrm) (res ExistsRes, err err
 	return res, metaerr.Wrap(err)
 }
 
-func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, ecParent oid.Address, currEpoch uint64) (bool, bool, error) {
+func (db *DB) exists(tx *bbolt.Tx, bc *bucketCache, addr oid.Address, ecParent oid.Address, currEpoch uint64) (bool, bool, error) {
 	var locked bool
 	if !ecParent.Equals(oid.Address{}) {
-		st, err := objectStatus(tx, ecParent, currEpoch)
+		st, err := objectStatusWithCache(bc, tx, ecParent, currEpoch)
 		if err != nil {
 			return false, false, err
 		}
@@ -103,10 +103,10 @@ func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, ecParent oid.Address, currE
 			return false, locked, ErrObjectIsExpired
 		}
 
-		locked = objectLocked(tx, ecParent.Container(), ecParent.Object())
+		locked = objectLockedWithCache(bc, tx, ecParent.Container(), ecParent.Object())
 	}
 	// check graveyard and object expiration first
-	st, err := objectStatus(tx, addr, currEpoch)
+	st, err := objectStatusWithCache(bc, tx, addr, currEpoch)
 	if err != nil {
 		return false, false, err
 	}
@@ -122,16 +122,15 @@ func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, ecParent oid.Address, currE
 	objKey := objectKey(addr.Object(), make([]byte, objectKeySize))
 
 	cnr := addr.Container()
-	key := make([]byte, bucketKeySize)
 
 	// if graveyard is empty, then check if object exists in primary bucket
-	if inBucket(tx, primaryBucketName(cnr, key), objKey) {
+	if inBucket(getPrimaryBucket(bc, tx, cnr), objKey) {
 		return true, locked, nil
 	}
 
 	// if primary bucket is empty, then check if object exists in parent bucket
-	if inBucket(tx, parentBucketName(cnr, key), objKey) {
-		splitInfo, err := getSplitInfo(tx, cnr, objKey)
+	if inBucket(getParentBucket(bc, tx, cnr), objKey) {
+		splitInfo, err := getSplitInfo(tx, bc, cnr, objKey)
 		if err != nil {
 			return false, locked, err
 		}
@@ -139,12 +138,12 @@ func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, ecParent oid.Address, currE
 		return false, locked, logicerr.Wrap(objectSDK.NewSplitInfoError(splitInfo))
 	}
 	// if parent bucket is empty, then check if object exists in ec bucket
-	if data := getFromBucket(tx, ecInfoBucketName(cnr, key), objKey); len(data) != 0 {
-		return false, locked, getECInfoError(tx, cnr, data)
+	if data := getFromBucket(getECInfoBucket(bc, tx, cnr), objKey); len(data) != 0 {
+		return false, locked, getECInfoError(tx, bc, cnr, data)
 	}
 
 	// if parent bucket is empty, then check if object exists in typed buckets
-	return firstIrregularObjectType(tx, cnr, objKey) != objectSDK.TypeRegular, locked, nil
+	return firstIrregularObjectType(tx, bc, cnr, objKey) != objectSDK.TypeRegular, locked, nil
 }
 
 // objectStatus returns:
@@ -152,10 +151,6 @@ func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, ecParent oid.Address, currE
 //   - 1 if object with GC mark;
 //   - 2 if object is covered with tombstone;
 //   - 3 if object is expired.
-func objectStatus(tx *bbolt.Tx, addr oid.Address, currEpoch uint64) (uint8, error) {
-	return objectStatusWithCache(nil, tx, addr, currEpoch)
-}
-
 func objectStatusWithCache(bc *bucketCache, tx *bbolt.Tx, addr oid.Address, currEpoch uint64) (uint8, error) {
 	// locked object could not be removed/marked with GC/expired
 	if objectLockedWithCache(bc, tx, addr.Container(), addr.Object()) {
@@ -207,8 +202,7 @@ func inGraveyardWithKey(addrKey []byte, graveyard, garbageBCK *bbolt.Bucket) uin
 }
 
 // inBucket checks if key <key> is present in bucket <name>.
-func inBucket(tx *bbolt.Tx, name, key []byte) bool {
-	bkt := tx.Bucket(name)
+func inBucket(bkt *bbolt.Bucket, key []byte) bool {
 	if bkt == nil {
 		return false
 	}
@@ -221,9 +215,8 @@ func inBucket(tx *bbolt.Tx, name, key []byte) bool {
 
 // getSplitInfo returns SplitInfo structure from root index. Returns error
 // if there is no `key` record in root index.
-func getSplitInfo(tx *bbolt.Tx, cnr cid.ID, key []byte) (*objectSDK.SplitInfo, error) {
-	bucketName := rootBucketName(cnr, make([]byte, bucketKeySize))
-	rawSplitInfo := getFromBucket(tx, bucketName, key)
+func getSplitInfo(tx *bbolt.Tx, bc *bucketCache, cnr cid.ID, key []byte) (*objectSDK.SplitInfo, error) {
+	rawSplitInfo := getFromBucket(getRootBucket(bc, tx, cnr), key)
 	if len(rawSplitInfo) == 0 {
 		return nil, ErrLackSplitInfo
 	}

pkg/local_object_storage/metabase/get.go

@@ -110,7 +110,6 @@ func (db *DB) getWithCache(bc *bucketCache, tx *bbolt.Tx, addr oid.Address, key
 	key = objectKey(addr.Object(), key)
 	cnr := addr.Container()
 	obj := objectSDK.New()
-	bucketName := make([]byte, bucketKeySize)
 
 	// check in primary index
 	if b := getPrimaryBucket(bc, tx, cnr); b != nil {
@@ -119,43 +118,40 @@ func (db *DB) getWithCache(bc *bucketCache, tx *bbolt.Tx, addr oid.Address, key
 		}
 	}
 
-	data := getFromBucket(tx, ecInfoBucketName(cnr, bucketName), key)
+	data := getFromBucket(getECInfoBucket(bc, tx, cnr), key)
 	if len(data) != 0 {
-		return nil, getECInfoError(tx, cnr, data)
+		return nil, getECInfoError(tx, bc, cnr, data)
 	}
 
 	// if not found then check in tombstone index
-	data = getFromBucket(tx, tombstoneBucketName(cnr, bucketName), key)
+	data = getFromBucket(getTombstoneBucket(bc, tx, cnr), key)
 	if len(data) != 0 {
 		return obj, obj.Unmarshal(data)
 	}
 
 	// if not found then check in locker index
-	data = getFromBucket(tx, bucketNameLockers(cnr, bucketName), key)
+	data = getFromBucket(getLockersBucket(bc, tx, cnr), key)
 	if len(data) != 0 {
 		return obj, obj.Unmarshal(data)
 	}
 
 	// if not found then check if object is a virtual
-	return getVirtualObject(tx, cnr, key, raw)
+	return getVirtualObject(tx, bc, cnr, key, raw)
 }
 
-func getFromBucket(tx *bbolt.Tx, name, key []byte) []byte {
-	bkt := tx.Bucket(name)
+func getFromBucket(bkt *bbolt.Bucket, key []byte) []byte {
 	if bkt == nil {
 		return nil
 	}
-
 	return bkt.Get(key)
 }
 
-func getVirtualObject(tx *bbolt.Tx, cnr cid.ID, key []byte, raw bool) (*objectSDK.Object, error) {
+func getVirtualObject(tx *bbolt.Tx, bc *bucketCache, cnr cid.ID, key []byte, raw bool) (*objectSDK.Object, error) {
 	if raw {
-		return nil, getSplitInfoError(tx, cnr, key)
+		return nil, getSplitInfoError(tx, bc, cnr, key)
 	}
 
-	bucketName := make([]byte, bucketKeySize)
-	parentBucket := tx.Bucket(parentBucketName(cnr, bucketName))
+	parentBucket := getParentBucket(bc, tx, cnr)
 	if parentBucket == nil {
 		return nil, logicerr.Wrap(new(apistatus.ObjectNotFound))
 	}
@@ -172,17 +168,17 @@ func getVirtualObject(tx *bbolt.Tx, cnr cid.ID, key []byte, raw bool) (*objectSD
 	var data []byte
 	for i := 0; i < len(relativeLst) && len(data) == 0; i++ {
 		virtualOID := relativeLst[len(relativeLst)-i-1]
-		data = getFromBucket(tx, primaryBucketName(cnr, bucketName), virtualOID)
+		data = getFromBucket(getPrimaryBucket(bc, tx, cnr), virtualOID)
 	}
 
 	if len(data) == 0 {
 		// check if any of the relatives is an EC object
 		for _, relative := range relativeLst {
-			data = getFromBucket(tx, ecInfoBucketName(cnr, bucketName), relative)
+			data = getFromBucket(getECInfoBucket(bc, tx, cnr), relative)
 			if len(data) > 0 {
 				// we can't return object headers, but can return error,
 				// so assembler can try to assemble complex object
-				return nil, getSplitInfoError(tx, cnr, key)
+				return nil, getSplitInfoError(tx, bc, cnr, key)
 			}
 		}
 	}
@@ -203,8 +199,8 @@ func getVirtualObject(tx *bbolt.Tx, cnr cid.ID, key []byte, raw bool) (*objectSD
 	return par, nil
 }
 
-func getSplitInfoError(tx *bbolt.Tx, cnr cid.ID, key []byte) error {
-	splitInfo, err := getSplitInfo(tx, cnr, key)
+func getSplitInfoError(tx *bbolt.Tx, bc *bucketCache, cnr cid.ID, key []byte) error {
+	splitInfo, err := getSplitInfo(tx, bc, cnr, key)
 	if err == nil {
 		return logicerr.Wrap(objectSDK.NewSplitInfoError(splitInfo))
 	}
@@ -212,7 +208,7 @@ func getSplitInfoError(tx *bbolt.Tx, cnr cid.ID, key []byte) error {
 	return logicerr.Wrap(new(apistatus.ObjectNotFound))
 }
 
-func getECInfoError(tx *bbolt.Tx, cnr cid.ID, data []byte) error {
+func getECInfoError(tx *bbolt.Tx, bc *bucketCache, cnr cid.ID, data []byte) error {
 	keys, err := decodeList(data)
 	if err != nil {
 		return err
@@ -220,7 +216,7 @@ func getECInfoError(tx *bbolt.Tx, cnr cid.ID, data []byte) error {
 	ecInfo := objectSDK.NewECInfo()
 	for _, key := range keys {
 		// check in primary index
-		objData := getFromBucket(tx, primaryBucketName(cnr, make([]byte, bucketKeySize)), key)
+		objData := getFromBucket(getPrimaryBucket(bc, tx, cnr), key)
 		if len(objData) != 0 {
 			obj := objectSDK.New()
 			if err := obj.Unmarshal(objData); err != nil {

pkg/local_object_storage/metabase/graveyard.go

@@ -287,19 +287,19 @@ func (db *DB) InhumeTombstones(ctx context.Context, tss []TombstonedObject) (Inh
 
 	var res InhumeRes
 
-	err := db.boltDB.Batch(func(tx *bbolt.Tx) error {
+	err := db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
 		res = InhumeRes{inhumedByCnrID: make(map[cid.ID]ObjectCounters)}
 
-		garbageBKT := tx.Bucket(garbageBucketName)
-		graveyardBKT := tx.Bucket(graveyardBucketName)
+		garbageBKT := getGarbageBucket(bc, tx)
+		graveyardBKT := getGraveyardBucket(bc, tx)
 
-		bkt, value, err := db.getInhumeTargetBucketAndValue(garbageBKT, graveyardBKT, prm)
+		targetBucket, value, err := db.getInhumeTargetBucketAndValue(garbageBKT, graveyardBKT, prm)
 		if err != nil {
 			return err
 		}
 
 		for i := range tss {
-			if err := db.inhumeTxSingle(bkt, value, graveyardBKT, garbageBKT, tss[i].Tombstone(), buf, currEpoch, prm, &res); err != nil {
+			if err := db.inhumeTxSingle(tx, bc, targetBucket, value, tss[i].Tombstone(), buf, currEpoch, prm, &res); err != nil {
 				return err
 			}
 			if err := graveyardBKT.Delete(addressKey(tss[i].Address(), buf)); err != nil {

pkg/local_object_storage/metabase/inhume.go

@@ -199,8 +199,8 @@ func (db *DB) Inhume(ctx context.Context, prm InhumePrm) (InhumeRes, error) {
 		inhumedByCnrID: make(map[cid.ID]ObjectCounters),
 	}
 	currEpoch := db.epochState.CurrentEpoch()
-	err := db.boltDB.Batch(func(tx *bbolt.Tx) error {
-		return db.inhumeTx(tx, currEpoch, prm, &res)
+	err := db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
+		return db.inhumeTx(tx, bc, currEpoch, prm, &res)
 	})
 	success = err == nil
 	if success {
@@ -213,18 +213,15 @@ func (db *DB) Inhume(ctx context.Context, prm InhumePrm) (InhumeRes, error) {
 	return res, metaerr.Wrap(err)
 }
 
-func (db *DB) inhumeTx(tx *bbolt.Tx, epoch uint64, prm InhumePrm, res *InhumeRes) error {
-	garbageBKT := tx.Bucket(garbageBucketName)
-	graveyardBKT := tx.Bucket(graveyardBucketName)
-
-	bkt, value, err := db.getInhumeTargetBucketAndValue(garbageBKT, graveyardBKT, prm)
+func (db *DB) inhumeTx(tx *bbolt.Tx, bc *bucketCache, epoch uint64, prm InhumePrm, res *InhumeRes) error {
+	bkt, value, err := db.getInhumeTargetBucketAndValue(getGarbageBucket(bc, tx), getGraveyardBucket(bc, tx), prm)
 	if err != nil {
 		return err
 	}
 
 	buf := make([]byte, addressKeySize)
 	for i := range prm.target {
-		if err := db.inhumeTxSingle(bkt, value, graveyardBKT, garbageBKT, prm.target[i], buf, epoch, prm, res); err != nil {
+		if err := db.inhumeTxSingle(tx, bc, bkt, value, prm.target[i], buf, epoch, prm, res); err != nil {
 			return err
 		}
 	}
@@ -232,13 +229,12 @@ func (db *DB) inhumeTx(tx *bbolt.Tx, epoch uint64, prm InhumePrm, res *InhumeRes
 	return db.applyInhumeResToCounters(tx, res)
 }
 
-func (db *DB) inhumeTxSingle(bkt *bbolt.Bucket, value []byte, graveyardBKT, garbageBKT *bbolt.Bucket, addr oid.Address, buf []byte, epoch uint64, prm InhumePrm, res *InhumeRes) error {
+func (db *DB) inhumeTxSingle(tx *bbolt.Tx, bc *bucketCache, targetBucket *bbolt.Bucket, value []byte, addr oid.Address, buf []byte, epoch uint64, prm InhumePrm, res *InhumeRes) error {
 	id := addr.Object()
 	cnr := addr.Container()
-	tx := bkt.Tx()
 
 	// prevent locked objects to be inhumed
-	if !prm.forceRemoval && objectLocked(tx, cnr, id) {
+	if !prm.forceRemoval && objectLockedWithCache(bc, tx, cnr, id) {
 		return new(apistatus.ObjectLocked)
 	}
 
@@ -248,23 +244,23 @@ func (db *DB) inhumeTxSingle(bkt *bbolt.Bucket, value []byte, graveyardBKT, garb
 	// if `Inhume` was called not with the
 	// `WithForceGCMark` option
 	if !prm.forceRemoval {
-		if isLockObject(tx, cnr, id) {
+		if isLockObject(tx, bc, cnr, id) {
 			return ErrLockObjectRemoval
 		}
 
 		lockWasChecked = true
 	}
 
-	obj, err := db.get(tx, addr, buf, false, true, epoch)
+	obj, err := db.getWithCache(bc, tx, addr, buf, false, true, epoch)
 	targetKey := addressKey(addr, buf)
 	var ecErr *objectSDK.ECInfoError
 	if err == nil {
-		err = db.updateDeleteInfo(tx, garbageBKT, graveyardBKT, targetKey, cnr, obj, res)
+		err = db.updateDeleteInfo(tx, bc, targetKey, cnr, obj, res)
 		if err != nil {
 			return err
 		}
 	} else if errors.As(err, &ecErr) {
-		err = db.inhumeECInfo(tx, epoch, prm.tomb, res, garbageBKT, graveyardBKT, ecErr.ECInfo(), cnr, bkt, value)
+		err = db.inhumeECInfo(tx, bc, epoch, prm.tomb, res, ecErr.ECInfo(), cnr, targetBucket, value)
 		if err != nil {
 			return err
 		}
@@ -272,7 +268,7 @@ func (db *DB) inhumeTxSingle(bkt *bbolt.Bucket, value []byte, graveyardBKT, garb
 
 	if prm.tomb != nil {
 		var isTomb bool
-		isTomb, err = db.markAsGC(graveyardBKT, garbageBKT, targetKey)
+		isTomb, err = db.markAsGC(getGraveyardBucket(bc, tx), getGarbageBucket(bc, tx), targetKey)
 		if err != nil {
 			return err
 		}
@@ -283,7 +279,7 @@ func (db *DB) inhumeTxSingle(bkt *bbolt.Bucket, value []byte, graveyardBKT, garb
 	}
 
 	// consider checking if target is already in graveyard?
-	err = bkt.Put(targetKey, value)
+	err = targetBucket.Put(targetKey, value)
 	if err != nil {
 		return err
 	}
@@ -297,15 +293,14 @@ func (db *DB) inhumeTxSingle(bkt *bbolt.Bucket, value []byte, graveyardBKT, garb
 			return nil
 		}
 
-		if isLockObject(tx, cnr, id) {
+		if isLockObject(tx, bc, cnr, id) {
 			res.deletedLockObj = append(res.deletedLockObj, addr)
 		}
 	}
 	return nil
 }
 
-func (db *DB) inhumeECInfo(tx *bbolt.Tx, epoch uint64, tomb *oid.Address, res *InhumeRes,
-	garbageBKT *bbolt.Bucket, graveyardBKT *bbolt.Bucket,
+func (db *DB) inhumeECInfo(tx *bbolt.Tx, bc *bucketCache, epoch uint64, tomb *oid.Address, res *InhumeRes,
 	ecInfo *objectSDK.ECInfo, cnr cid.ID, targetBucket *bbolt.Bucket, value []byte,
 ) error {
 	for _, chunk := range ecInfo.Chunks {
@@ -318,17 +313,17 @@ func (db *DB) inhumeECInfo(tx *bbolt.Tx, epoch uint64, tomb *oid.Address, res *I
 			return err
 		}
 		chunkAddr.SetObject(chunkID)
-		chunkObj, err := db.get(tx, chunkAddr, chunkBuf, false, true, epoch)
+		chunkObj, err := db.getWithCache(bc, tx, chunkAddr, chunkBuf, false, true, epoch)
 		if err != nil {
 			return err
 		}
 		chunkKey := addressKey(chunkAddr, chunkBuf)
-		err = db.updateDeleteInfo(tx, garbageBKT, graveyardBKT, chunkKey, cnr, chunkObj, res)
+		err = db.updateDeleteInfo(tx, bc, chunkKey, cnr, chunkObj, res)
 		if err != nil {
 			return err
 		}
 		if tomb != nil {
-			_, err = db.markAsGC(graveyardBKT, garbageBKT, chunkKey)
+			_, err = db.markAsGC(getGraveyardBucket(bc, tx), getGarbageBucket(bc, tx), chunkKey)
 			if err != nil {
 				return err
 			}
@@ -398,16 +393,16 @@ func (db *DB) markAsGC(graveyardBKT, garbageBKT *bbolt.Bucket, addressKey []byte
 	return false, garbageBKT.Put(addressKey, zeroValue)
 }
 
-func (db *DB) updateDeleteInfo(tx *bbolt.Tx, garbageBKT, graveyardBKT *bbolt.Bucket, targetKey []byte, cnr cid.ID, obj *objectSDK.Object, res *InhumeRes) error {
+func (db *DB) updateDeleteInfo(tx *bbolt.Tx, bc *bucketCache, targetKey []byte, cnr cid.ID, obj *objectSDK.Object, res *InhumeRes) error {
 	containerID, _ := obj.ContainerID()
-	if inGraveyardWithKey(targetKey, graveyardBKT, garbageBKT) == 0 {
+	if inGraveyardWithKey(targetKey, getGraveyardBucket(bc, tx), getGarbageBucket(bc, tx)) == 0 {
 		res.storeDeletionInfo(containerID, obj.PayloadSize(), IsUserObject(obj))
 	}
 
 	// if object is stored, and it is regular object then update bucket
 	// with container size estimations
 	if obj.Type() == objectSDK.TypeRegular {
-		err := changeContainerSize(tx, cnr, obj.PayloadSize(), false)
+		err := changeContainerSize(tx, bc, cnr, obj.PayloadSize(), false)
 		if err != nil {
 			return err
 		}

pkg/local_object_storage/metabase/iterators.go

@@ -76,7 +76,8 @@ func (db *DB) IterateExpired(ctx context.Context, epoch uint64, h ExpiredObjectH
 }
 
 func (db *DB) iterateExpired(tx *bbolt.Tx, epoch uint64, h ExpiredObjectHandler) error {
-	b := tx.Bucket(expEpochToObjectBucketName)
+	bc := newBucketCache()
+	b := getExpEpochToObjectBucket(bc, tx)
 	c := b.Cursor()
 	for k, _ := c.First(); k != nil; k, _ = c.Next() {
 		expiresAfter, cnr, obj, err := parseExpirationEpochKey(k)
@@ -87,7 +88,7 @@ func (db *DB) iterateExpired(tx *bbolt.Tx, epoch uint64, h ExpiredObjectHandler)
 		if expiresAfter >= epoch {
 			return nil
 		}
-		if objectLocked(tx, cnr, obj) {
+		if objectLockedWithCache(bc, tx, cnr, obj) {
 			continue
 		}
 		var addr oid.Address
@@ -95,7 +96,7 @@ func (db *DB) iterateExpired(tx *bbolt.Tx, epoch uint64, h ExpiredObjectHandler)
 		addr.SetObject(obj)
 		objKey := objectKey(addr.Object(), make([]byte, objectKeySize))
 		err = h(&ExpiredObject{
-			typ:  firstIrregularObjectType(tx, cnr, objKey),
+			typ:  firstIrregularObjectType(tx, bc, cnr, objKey),
 			addr: addr,
 		})
 		if err == nil {

pkg/local_object_storage/metabase/lock.go

@@ -79,12 +79,12 @@ func (db *DB) lockInternal(locked []oid.ID, cnr cid.ID, locker oid.ID) error {
 	}
 	key := make([]byte, cidSize)
 
-	return metaerr.Wrap(db.boltDB.Batch(func(tx *bbolt.Tx) error {
-		if firstIrregularObjectType(tx, cnr, bucketKeysLocked...) != objectSDK.TypeRegular {
+	return metaerr.Wrap(db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
+		if firstIrregularObjectType(tx, bc, cnr, bucketKeysLocked...) != objectSDK.TypeRegular {
 			return logicerr.Wrap(new(apistatus.LockNonRegularObject))
 		}
 
-		bucketLocked := tx.Bucket(bucketNameLocked)
+		bucketLocked := getLockedBucket(bc, tx)
 
 		cnr.Encode(key)
 		bucketLockedContainer, err := bucketLocked.CreateBucketIfNotExists(key)
@@ -144,9 +144,9 @@ func (db *DB) FreeLockedBy(lockers []oid.Address) ([]oid.Address, error) {
 
 	var unlockedObjects []oid.Address
 
-	if err := db.boltDB.Batch(func(tx *bbolt.Tx) error {
+	if err := db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
 		for i := range lockers {
-			unlocked, err := freePotentialLocks(tx, lockers[i].Container(), lockers[i].Object())
+			unlocked, err := freePotentialLocks(tx, bc, lockers[i].Container(), lockers[i].Object())
 			if err != nil {
 				return err
 			}
@@ -211,9 +211,9 @@ func getLocks(tx *bbolt.Tx, idCnr cid.ID, idObj oid.ID) ([]oid.ID, error) {
 // Operation is very resource-intensive, which is caused by the admissibility
 // of multiple locks. Also, if we knew what objects are locked, it would be
 // possible to speed up the execution.
-func freePotentialLocks(tx *bbolt.Tx, idCnr cid.ID, locker oid.ID) ([]oid.Address, error) {
+func freePotentialLocks(tx *bbolt.Tx, bc *bucketCache, idCnr cid.ID, locker oid.ID) ([]oid.Address, error) {
 	var unlockedObjects []oid.Address
-	bucketLocked := tx.Bucket(bucketNameLocked)
+	bucketLocked := getLockedBucket(bc, tx)
 	if bucketLocked == nil {
 		return unlockedObjects, nil
 	}

pkg/local_object_storage/metabase/put.go

@@ -9,6 +9,7 @@ import (
 	"strconv"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	objectCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
 	storagelog "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/log"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/metaerr"
@@ -28,6 +29,11 @@ type (
 	namedBucketItem struct {
 		name, key, val []byte
 	}
+
+	bucketItem struct {
+		bucket   *bbolt.Bucket
+		key, val []byte
+	}
 )
 
 // PutPrm groups the parameters of Put operation.
@@ -63,6 +69,8 @@ var (
 	ErrIncorrectRootObject = errors.New("invalid root object")
 )
 
+const bucketNilAsserMsg = "bucket to put data is nil"
+
 // Put saves object header in metabase. Object payload expected to be cut.
 //
 // Returns an error of type apistatus.ObjectAlreadyRemoved if object has been placed in graveyard.
@@ -93,9 +101,9 @@ func (db *DB) Put(ctx context.Context, prm PutPrm) (res PutRes, err error) {
 
 	currEpoch := db.epochState.CurrentEpoch()
 
-	err = db.boltDB.Batch(func(tx *bbolt.Tx) error {
+	err = db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
 		var e error
-		res, e = db.put(tx, prm.obj, prm.id, nil, currEpoch, prm.indexAttributes)
+		res, e = db.put(tx, bc, prm.obj, prm.id, nil, currEpoch, prm.indexAttributes)
 		return e
 	})
 	if err == nil {
@@ -109,6 +117,7 @@ func (db *DB) Put(ctx context.Context, prm PutPrm) (res PutRes, err error) {
 }
 
 func (db *DB) put(tx *bbolt.Tx,
+	bc *bucketCache,
 	obj *objectSDK.Object,
 	id []byte,
 	si *objectSDK.SplitInfo,
@@ -128,7 +137,7 @@ func (db *DB) put(tx *bbolt.Tx,
 
 	isParent := si != nil
 
-	exists, _, err := db.exists(tx, objectCore.AddressOf(obj), ecParentAddress, currEpoch)
+	exists, _, err := db.exists(tx, bc, objectCore.AddressOf(obj), ecParentAddress, currEpoch)
 
 	var splitInfoError *objectSDK.SplitInfoError
 	if errors.As(err, &splitInfoError) {
@@ -138,51 +147,51 @@ func (db *DB) put(tx *bbolt.Tx,
 	}
 
 	if exists {
-		return PutRes{}, db.updateObj(tx, obj, id, si, isParent)
+		return PutRes{}, db.updateObj(tx, bc, obj, id, si, isParent)
 	}
 
-	return PutRes{Inserted: true}, db.insertObject(tx, obj, id, si, isParent, cnr, currEpoch, indexAttributes)
+	return PutRes{Inserted: true}, db.insertObject(tx, bc, obj, id, si, isParent, cnr, currEpoch, indexAttributes)
 }
 
-func (db *DB) updateObj(tx *bbolt.Tx, obj *objectSDK.Object, id []byte, si *objectSDK.SplitInfo, isParent bool) error {
+func (db *DB) updateObj(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, id []byte, si *objectSDK.SplitInfo, isParent bool) error {
 	// most right child and split header overlap parent so we have to
 	// check if object exists to not overwrite it twice
 
 	// When storage engine moves objects between different sub-storages,
 	// it calls metabase.Put method with new storage ID, thus triggering this code.
 	if !isParent && id != nil {
-		return setStorageID(tx, objectCore.AddressOf(obj), id, true)
+		return setStorageID(tx, bc, objectCore.AddressOf(obj), id, true)
 	}
 
 	// when storage already has last object in split hierarchy and there is
 	// a linking object to put (or vice versa), we should update split info
 	// with object ids of these objects
 	if isParent {
-		return updateSplitInfo(tx, objectCore.AddressOf(obj), si)
+		return updateSplitInfo(tx, bc, objectCore.AddressOf(obj), si)
 	}
 
 	return nil
 }
 
-func (db *DB) insertObject(tx *bbolt.Tx, obj *objectSDK.Object, id []byte, si *objectSDK.SplitInfo, isParent bool, cnr cid.ID, currEpoch uint64, indexAttributes bool) error {
+func (db *DB) insertObject(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, id []byte, si *objectSDK.SplitInfo, isParent bool, cnr cid.ID, currEpoch uint64, indexAttributes bool) error {
 	if par := obj.Parent(); par != nil && !isParent { // limit depth by two
 		parentSI, err := splitInfoFromObject(obj)
 		if err != nil {
 			return err
 		}
 
-		_, err = db.put(tx, par, id, parentSI, currEpoch, indexAttributes)
+		_, err = db.put(tx, bc, par, id, parentSI, currEpoch, indexAttributes)
 		if err != nil {
 			return err
 		}
 	}
 
-	err := putUniqueIndexes(tx, obj, si, id)
+	err := putUniqueIndexes(tx, bc, obj, si, id)
 	if err != nil {
 		return fmt.Errorf("put unique indexes: %w", err)
 	}
 
-	err = updateListIndexes(tx, obj, putListIndexItem)
+	err = updateListIndexes(tx, bc, obj, putListIndexItem, true)
 	if err != nil {
 		return fmt.Errorf("put list indexes: %w", err)
 	}
@@ -196,14 +205,14 @@ func (db *DB) insertObject(tx *bbolt.Tx, obj *objectSDK.Object, id []byte, si *o
 
 	// update container volume size estimation
 	if obj.Type() == objectSDK.TypeRegular && !isParent {
-		err = changeContainerSize(tx, cnr, obj.PayloadSize(), true)
+		err = changeContainerSize(tx, bc, cnr, obj.PayloadSize(), true)
 		if err != nil {
 			return err
 		}
 	}
 
 	if !isParent {
-		if err = db.incCounters(tx, cnr, IsUserObject(obj)); err != nil {
+		if err = db.incCounters(tx, bc, cnr, IsUserObject(obj)); err != nil {
 			return err
 		}
 	}
@@ -211,69 +220,78 @@ func (db *DB) insertObject(tx *bbolt.Tx, obj *objectSDK.Object, id []byte, si *o
 	return nil
 }
 
-func putUniqueIndexes(tx *bbolt.Tx, obj *objectSDK.Object, si *objectSDK.SplitInfo, id []byte) error {
+func putUniqueIndexes(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, si *objectSDK.SplitInfo, id []byte) error {
 	isParent := si != nil
 	addr := objectCore.AddressOf(obj)
 	objKey := objectKey(addr.Object(), make([]byte, objectKeySize))
 
 	bucketName := make([]byte, bucketKeySize)
 	if !isParent {
-		err := putRawObjectData(tx, obj, bucketName, addr, objKey)
+		err := putRawObjectData(tx, bc, obj, bucketName, addr, objKey)
 		if err != nil {
 			return err
 		}
 		if id != nil {
-			if err = setStorageID(tx, objectCore.AddressOf(obj), id, false); err != nil {
+			if err = setStorageID(tx, bc, objectCore.AddressOf(obj), id, false); err != nil {
 				return err
 			}
 		}
 	}
 
-	if err := putExpirationEpoch(tx, obj, addr, objKey); err != nil {
+	if err := putExpirationEpoch(tx, bc, obj, addr, objKey); err != nil {
 		return err
 	}
 
-	return putSplitInfo(tx, obj, bucketName, addr, si, objKey)
+	return putSplitInfo(tx, bc, obj, bucketName, addr, si, objKey)
 }
 
-func putRawObjectData(tx *bbolt.Tx, obj *objectSDK.Object, bucketName []byte, addr oid.Address, objKey []byte) error {
+func putRawObjectData(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, bucketName []byte, addr oid.Address, objKey []byte) error {
+	var bkt *bbolt.Bucket
+	var err error
 	switch obj.Type() {
 	case objectSDK.TypeRegular:
-		bucketName = primaryBucketName(addr.Container(), bucketName)
+		bkt, err = getOrCreateBucket(tx, bc, addr.Container(), getPrimaryBucket, primaryBucketName(addr.Container(), bucketName), true)
 	case objectSDK.TypeTombstone:
-		bucketName = tombstoneBucketName(addr.Container(), bucketName)
+		bkt, err = getOrCreateBucket(tx, bc, addr.Container(), getTombstoneBucket, tombstoneBucketName(addr.Container(), bucketName), true)
 	case objectSDK.TypeLock:
-		bucketName = bucketNameLockers(addr.Container(), bucketName)
+		bkt, err = getOrCreateBucket(tx, bc, addr.Container(), getLockersBucket, bucketNameLockers(addr.Container(), bucketName), true)
 	default:
 		return ErrUnknownObjectType
 	}
+	if err != nil {
+		return err
+	}
 	rawObject, err := obj.CutPayload().Marshal()
 	if err != nil {
 		return fmt.Errorf("marshal object header: %w", err)
 	}
-	return putUniqueIndexItem(tx, namedBucketItem{
-		name: bucketName,
-		key:  objKey,
-		val:  rawObject,
+	return putUniqueIndexItem(bucketItem{
+		bucket: bkt,
+		key:    objKey,
+		val:    rawObject,
 	})
 }
 
-func putExpirationEpoch(tx *bbolt.Tx, obj *objectSDK.Object, addr oid.Address, objKey []byte) error {
+func putExpirationEpoch(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, addr oid.Address, objKey []byte) error {
 	if expEpoch, ok := hasExpirationEpoch(obj); ok {
-		err := putUniqueIndexItem(tx, namedBucketItem{
-			name: expEpochToObjectBucketName,
-			key:  expirationEpochKey(expEpoch, addr.Container(), addr.Object()),
-			val:  zeroValue,
+		err := putUniqueIndexItem(bucketItem{
+			bucket: getExpEpochToObjectBucket(bc, tx),
+			key:    expirationEpochKey(expEpoch, addr.Container(), addr.Object()),
+			val:    zeroValue,
 		})
 		if err != nil {
 			return err
 		}
+		bkt, err := getOrCreateBucket(tx, bc, addr.Container(), getObjToExpEpochBucket, objectToExpirationEpochBucketName(addr.Container(), make([]byte, bucketKeySize)), true)
+		if err != nil {
+			return err
+		}
 		val := make([]byte, epochSize)
 		binary.LittleEndian.PutUint64(val, expEpoch)
-		err = putUniqueIndexItem(tx, namedBucketItem{
-			name: objectToExpirationEpochBucketName(addr.Container(), make([]byte, bucketKeySize)),
-			key:  objKey,
-			val:  val,
+		err = putUniqueIndexItem(bucketItem{
+			bucket: bkt,
+			key:    objKey,
+			val:    val,
 		})
 		if err != nil {
 			return err
@@ -282,7 +300,7 @@ func putExpirationEpoch(tx *bbolt.Tx, obj *objectSDK.Object, addr oid.Address, o
 	return nil
 }
 
-func putSplitInfo(tx *bbolt.Tx, obj *objectSDK.Object, bucketName []byte, addr oid.Address, si *objectSDK.SplitInfo, objKey []byte) error {
+func putSplitInfo(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, bucketName []byte, addr oid.Address, si *objectSDK.SplitInfo, objKey []byte) error {
 	if obj.Type() == objectSDK.TypeRegular && !obj.HasParent() {
 		if ecHead := obj.ECHeader(); ecHead != nil {
 			parentID := ecHead.Parent()
@@ -300,15 +318,19 @@ func putSplitInfo(tx *bbolt.Tx, obj *objectSDK.Object, bucketName []byte, addr o
 			}
 			objKey = objectKey(parentID, objKey)
 		}
-		return updateSplitInfoIndex(tx, objKey, addr.Container(), bucketName, si)
+		return updateSplitInfoIndex(tx, bc, objKey, addr.Container(), bucketName, si)
 	}
 	return nil
 }
 
-func updateSplitInfoIndex(tx *bbolt.Tx, objKey []byte, cnr cid.ID, bucketName []byte, si *objectSDK.SplitInfo) error {
-	return updateUniqueIndexItem(tx, namedBucketItem{
-		name: rootBucketName(cnr, bucketName),
-		key:  objKey,
+func updateSplitInfoIndex(tx *bbolt.Tx, bc *bucketCache, objKey []byte, cnr cid.ID, bucketName []byte, si *objectSDK.SplitInfo) error {
+	bkt, err := getOrCreateBucket(tx, bc, cnr, getRootBucket, rootBucketName(cnr, bucketName), true)
+	if err != nil {
+		return err
+	}
+	return updateUniqueIndexItem(bucketItem{
+		bucket: bkt,
+		key:    objKey,
 	}, func(old, _ []byte) ([]byte, error) {
 		switch {
 		case si == nil && old == nil:
@@ -328,78 +350,100 @@ func updateSplitInfoIndex(tx *bbolt.Tx, objKey []byte, cnr cid.ID, bucketName []
 	})
 }
 
-type updateIndexItemFunc = func(tx *bbolt.Tx, item namedBucketItem) error
+type updateIndexItemFunc = func(item bucketItem) error
 
-func updateListIndexes(tx *bbolt.Tx, obj *objectSDK.Object, f updateIndexItemFunc) error {
+func updateListIndexes(tx *bbolt.Tx, bc *bucketCache, obj *objectSDK.Object, f updateIndexItemFunc, createBuckets bool) error {
 	idObj, _ := obj.ID()
 	cnr, _ := obj.ContainerID()
 	objKey := objectKey(idObj, make([]byte, objectKeySize))
 	bucketName := make([]byte, bucketKeySize)
 
 	idParent, ok := obj.ParentID()
-
 	// index parent ids
 	if ok {
-		err := f(tx, namedBucketItem{
-			name: parentBucketName(cnr, bucketName),
-			key:  objectKey(idParent, make([]byte, objectKeySize)),
-			val:  objKey,
-		})
+		bkt, err := getOrCreateBucket(tx, bc, cnr, getParentBucket, parentBucketName(cnr, bucketName), createBuckets)
 		if err != nil {
 			return err
 		}
+		if err := f(bucketItem{
+			bucket: bkt,
+			key:    objectKey(idParent, make([]byte, objectKeySize)),
+			val:    objKey,
+		}); err != nil {
+			return err
+		}
 	}
 
 	// index split ids
 	if obj.SplitID() != nil {
-		err := f(tx, namedBucketItem{
-			name: splitBucketName(cnr, bucketName),
-			key:  obj.SplitID().ToV2(),
-			val:  objKey,
-		})
+		bkt, err := getOrCreateBucket(tx, bc, cnr, getSplitBucket, splitBucketName(cnr, bucketName), createBuckets)
 		if err != nil {
 			return err
 		}
+		if err := f(bucketItem{
+			bucket: bkt,
+			key:    obj.SplitID().ToV2(),
+			val:    objKey,
+		}); err != nil {
+			return err
+		}
 	}
 
 	if ech := obj.ECHeader(); ech != nil {
-		err := f(tx, namedBucketItem{
-			name: ecInfoBucketName(cnr, bucketName),
-			key:  objectKey(ech.Parent(), make([]byte, objectKeySize)),
-			val:  objKey,
-		})
+		bkt, err := getOrCreateBucket(tx, bc, cnr, getECInfoBucket, ecInfoBucketName(cnr, bucketName), createBuckets)
 		if err != nil {
 			return err
 		}
+		if err := f(bucketItem{
+			bucket: bkt,
+			key:    objectKey(ech.Parent(), make([]byte, objectKeySize)),
+			val:    objKey,
+		}); err != nil {
+			return err
+		}
 
 		if ech.ParentSplitID() != nil {
-			objKey := objectKey(ech.Parent(), make([]byte, objectKeySize))
-			err := f(tx, namedBucketItem{
-				name: splitBucketName(cnr, bucketName),
-				key:  ech.ParentSplitID().ToV2(),
-				val:  objKey,
-			})
+			bkt, err := getOrCreateBucket(tx, bc, cnr, getSplitBucket, splitBucketName(cnr, bucketName), createBuckets)
 			if err != nil {
 				return err
 			}
+			if err := f(bucketItem{
+				bucket: bkt,
+				key:    ech.ParentSplitID().ToV2(),
+				val:    objectKey(ech.Parent(), make([]byte, objectKeySize)),
+			}); err != nil {
+				return err
+			}
 		}
 
 		if parentSplitParentID := ech.ParentSplitParentID(); parentSplitParentID != nil {
-			objKey := objectKey(ech.Parent(), make([]byte, objectKeySize))
-			err := f(tx, namedBucketItem{
-				name: parentBucketName(cnr, bucketName),
-				key:  objectKey(*parentSplitParentID, make([]byte, objectKeySize)),
-				val:  objKey,
-			})
+			bkt, err := getOrCreateBucket(tx, bc, cnr, getParentBucket, parentBucketName(cnr, bucketName), createBuckets)
 			if err != nil {
 				return err
 			}
+			if err := f(bucketItem{
+				bucket: bkt,
+				key:    objectKey(*parentSplitParentID, make([]byte, objectKeySize)),
+				val:    objectKey(ech.Parent(), make([]byte, objectKeySize)),
+			}); err != nil {
+				return err
+			}
 		}
 	}
 
 	return nil
 }
 
+func getOrCreateBucket(tx *bbolt.Tx, bc *bucketCache, cnr cid.ID, getter func(bc *bucketCache, tx *bbolt.Tx, cnr cid.ID) *bbolt.Bucket,
+	bucketName []byte, create bool,
+) (*bbolt.Bucket, error) {
+	bkt := getter(bc, tx, cnr)
+	if bkt == nil && create {
+		return createBucketLikelyExists(tx, bucketName)
+	}
+	return bkt, nil
+}
+
 var indexedAttributes = map[string]struct{}{
 	"S3-Access-Box-CRDT-Name":   {},
 	objectSDK.AttributeFilePath: {},
@@ -411,7 +455,9 @@ func IsAtrributeIndexed(attr string) bool {
 	return found
 }
 
-func updateFKBTIndexes(tx *bbolt.Tx, obj *objectSDK.Object, f updateIndexItemFunc) error {
+type updateFKBTIndexItemFunc = func(tx *bbolt.Tx, item namedBucketItem) error
+
+func updateFKBTIndexes(tx *bbolt.Tx, obj *objectSDK.Object, f updateFKBTIndexItemFunc) error {
 	id, _ := obj.ID()
 	cnr, _ := obj.ContainerID()
 	objKey := objectKey(id, make([]byte, objectKeySize))
@@ -471,11 +517,9 @@ func createBucketLikelyExists[T bucketContainer](tx T, name []byte) (*bbolt.Buck
 	return tx.CreateBucket(name)
 }
 
-func updateUniqueIndexItem(tx *bbolt.Tx, item namedBucketItem, update func(oldData, newData []byte) ([]byte, error)) error {
-	bkt, err := createBucketLikelyExists(tx, item.name)
-	if err != nil {
-		return fmt.Errorf("create index %v: %w", item.name, err)
-	}
+func updateUniqueIndexItem(item bucketItem, update func(oldData, newData []byte) ([]byte, error)) error {
+	bkt := item.bucket
+	assert.True(bkt != nil, bucketNilAsserMsg)
 
 	data, err := update(bkt.Get(item.key), item.val)
 	if err != nil {
@@ -484,8 +528,8 @@ func updateUniqueIndexItem(tx *bbolt.Tx, item namedBucketItem, update func(oldDa
 	return bkt.Put(item.key, data)
 }
 
-func putUniqueIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
-	return updateUniqueIndexItem(tx, item, func(_, val []byte) ([]byte, error) { return val, nil })
+func putUniqueIndexItem(item bucketItem) error {
+	return updateUniqueIndexItem(item, func(_, val []byte) ([]byte, error) { return val, nil })
 }
 
 func putFKBTIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
@@ -502,11 +546,9 @@ func putFKBTIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
 	return fkbtRoot.Put(item.val, zeroValue)
 }
 
-func putListIndexItem(tx *bbolt.Tx, item namedBucketItem) error {
-	bkt, err := createBucketLikelyExists(tx, item.name)
-	if err != nil {
-		return fmt.Errorf("create index %v: %w", item.name, err)
-	}
+func putListIndexItem(item bucketItem) error {
+	bkt := item.bucket
+	assert.True(bkt != nil, bucketNilAsserMsg)
 
 	lst, err := decodeList(bkt.Get(item.key))
 	if err != nil {
@@ -595,9 +637,9 @@ func getVarUint(data []byte) (uint64, int, error) {
 
 // setStorageID for existing objects if they were moved from one
 // storage location to another.
-func setStorageID(tx *bbolt.Tx, addr oid.Address, id []byte, override bool) error {
+func setStorageID(tx *bbolt.Tx, bc *bucketCache, addr oid.Address, id []byte, override bool) error {
 	key := make([]byte, bucketKeySize)
-	bkt, err := createBucketLikelyExists(tx, smallBucketName(addr.Container(), key))
+	bkt, err := getOrCreateBucket(tx, bc, addr.Container(), getSmallBucket, smallBucketName(addr.Container(), key), true)
 	if err != nil {
 		return err
 	}
@@ -610,9 +652,9 @@ func setStorageID(tx *bbolt.Tx, addr oid.Address, id []byte, override bool) erro
 
 // updateSpliInfo for existing objects if storage filled with extra information
 // about last object in split hierarchy or linking object.
-func updateSplitInfo(tx *bbolt.Tx, addr oid.Address, from *objectSDK.SplitInfo) error {
+func updateSplitInfo(tx *bbolt.Tx, bc *bucketCache, addr oid.Address, from *objectSDK.SplitInfo) error {
 	objKey := objectKey(addr.Object(), make([]byte, bucketKeySize))
-	return updateSplitInfoIndex(tx, objKey, addr.Container(), make([]byte, bucketKeySize), from)
+	return updateSplitInfoIndex(tx, bc, objKey, addr.Container(), make([]byte, bucketKeySize), from)
 }
 
 // splitInfoFromObject returns split info based on last or linkin object.

pkg/local_object_storage/metabase/select.go

@@ -413,7 +413,7 @@ func (db *DB) selectObjectID(
 		addr.SetObject(id)
 
 		var splitInfoError *objectSDK.SplitInfoError
-		ok, _, err := db.exists(tx, addr, oid.Address{}, currEpoch)
+		ok, _, err := db.exists(tx, nil, addr, oid.Address{}, currEpoch)
 		if (err == nil && ok) || errors.As(err, &splitInfoError) {
 			raw := make([]byte, objectKeySize)
 			id.Encode(raw)

pkg/local_object_storage/metabase/storage_id.go

@@ -126,8 +126,8 @@ func (db *DB) UpdateStorageID(ctx context.Context, prm UpdateStorageIDPrm) (res
 		return res, ErrReadOnlyMode
 	}
 
-	err = db.boltDB.Batch(func(tx *bbolt.Tx) error {
-		return setStorageID(tx, prm.addr, prm.id, true)
+	err = db.Batch(func(tx *bbolt.Tx, bc *bucketCache) error {
+		return setStorageID(tx, bc, prm.addr, prm.id, true)
 	})
 	success = err == nil
 	return res, metaerr.Wrap(err)

pkg/local_object_storage/metabase/upgrade.go

@@ -168,20 +168,7 @@ func createExpirationEpochBuckets(ctx context.Context, db *bbolt.DB, log func(a
 						return nil
 					}
 					if err := db.Batch(func(tx *bbolt.Tx) error {
-						if err := putUniqueIndexItem(tx, namedBucketItem{
-							name: expEpochToObjectBucketName,
-							key:  expirationEpochKey(obj.expirationEpoch, obj.containerID, obj.objectID),
-							val:  zeroValue,
-						}); err != nil {
-							return err
-						}
-						val := make([]byte, epochSize)
-						binary.LittleEndian.PutUint64(val, obj.expirationEpoch)
-						return putUniqueIndexItem(tx, namedBucketItem{
-							name: objectToExpirationEpochBucketName(obj.containerID, make([]byte, bucketKeySize)),
-							key:  objectKey(obj.objectID, make([]byte, objectKeySize)),
-							val:  val,
-						})
+						return saveObjectExpirationEpoch(tx, obj)
 					}); err != nil {
 						return err
 					}
@@ -201,6 +188,31 @@ func createExpirationEpochBuckets(ctx context.Context, db *bbolt.DB, log func(a
 	return nil
 }
 
+func saveObjectExpirationEpoch(tx *bbolt.Tx, obj objectIDToExpEpoch) error {
+	bkt, err := createBucketLikelyExists(tx, expEpochToObjectBucketName)
+	if err != nil {
+		return err
+	}
+	if err := putUniqueIndexItem(bucketItem{
+		bucket: bkt,
+		key:    expirationEpochKey(obj.expirationEpoch, obj.containerID, obj.objectID),
+		val:    zeroValue,
+	}); err != nil {
+		return err
+	}
+	bkt, err = createBucketLikelyExists(tx, objectToExpirationEpochBucketName(obj.containerID, make([]byte, bucketKeySize)))
+	if err != nil {
+		return err
+	}
+	val := make([]byte, epochSize)
+	binary.LittleEndian.PutUint64(val, obj.expirationEpoch)
+	return putUniqueIndexItem(bucketItem{
+		bucket: bkt,
+		key:    objectKey(obj.objectID, make([]byte, objectKeySize)),
+		val:    val,
+	})
+}
+
 func selectObjectsWithExpirationEpoch(ctx context.Context, db *bbolt.DB, objects chan objectIDToExpEpoch) error {
 	defer close(objects)
 

pkg/local_object_storage/metabase/util.go

@@ -277,24 +277,22 @@ func objectKey(obj oid.ID, key []byte) []byte {
 // if meets irregular object container in objs - returns its type, otherwise returns object.TypeRegular.
 //
 // firstIrregularObjectType(tx, cnr, obj) usage allows getting object type.
-func firstIrregularObjectType(tx *bbolt.Tx, idCnr cid.ID, objs ...[]byte) objectSDK.Type {
+func firstIrregularObjectType(tx *bbolt.Tx, bc *bucketCache, idCnr cid.ID, objs ...[]byte) objectSDK.Type {
 	if len(objs) == 0 {
 		panic("empty object list in firstIrregularObjectType")
 	}
 
-	var keys [2][1 + cidSize]byte
-
 	irregularTypeBuckets := [...]struct {
-		typ  objectSDK.Type
-		name []byte
+		typ objectSDK.Type
+		bkt *bbolt.Bucket
 	}{
-		{objectSDK.TypeTombstone, tombstoneBucketName(idCnr, keys[0][:])},
-		{objectSDK.TypeLock, bucketNameLockers(idCnr, keys[1][:])},
+		{objectSDK.TypeTombstone, getTombstoneBucket(bc, tx, idCnr)},
+		{objectSDK.TypeLock, getLockersBucket(bc, tx, idCnr)},
 	}
 
 	for i := range objs {
 		for j := range irregularTypeBuckets {
-			if inBucket(tx, irregularTypeBuckets[j].name, objs[i]) {
+			if inBucket(irregularTypeBuckets[j].bkt, objs[i]) {
 				return irregularTypeBuckets[j].typ
 			}
 		}
@@ -304,8 +302,7 @@ func firstIrregularObjectType(tx *bbolt.Tx, idCnr cid.ID, objs ...[]byte) object
 }
 
 // return true if provided object is of LOCK type.
-func isLockObject(tx *bbolt.Tx, idCnr cid.ID, obj oid.ID) bool {
-	return inBucket(tx,
-		bucketNameLockers(idCnr, make([]byte, bucketKeySize)),
+func isLockObject(tx *bbolt.Tx, bc *bucketCache, idCnr cid.ID, obj oid.ID) bool {
+	return inBucket(getLockersBucket(bc, tx, idCnr),
 		objectKey(obj, make([]byte, objectKeySize)))
 }