[#1129] policer: Add EC chunk replication

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

cmd/frostfs-node/keyspaceiterator.go

@@ -13,7 +13,7 @@ type keySpaceIterator struct {
 	cur *engine.Cursor
 }
 
-func (it *keySpaceIterator) Next(ctx context.Context, batchSize uint32) ([]objectcore.AddressWithType, error) {
+func (it *keySpaceIterator) Next(ctx context.Context, batchSize uint32) ([]objectcore.Info, error) {
 	var prm engine.ListWithCursorPrm
 	prm.WithCursor(it.cur)
 	prm.WithCount(batchSize)

internal/logs/logs.go

@@ -529,4 +529,5 @@ const (
 	EngineRefillFailedToGetObjectsCount                                  = "failed to get blobstor objects count, no resync percent estimation is available"
 	ECFailedToSendToContainerNode                                        = "failed to send EC object to container node"
 	ECFailedToSaveECPart                                                 = "failed to save EC part"
+	PolicerNodeIsNotContainerNodeForECObject                             = "current node is not container node for EC object"
 )

pkg/core/object/info.go

@@ -7,14 +7,21 @@ import (
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 )
 
-// AddressWithType groups object address with its FrostFS
+type ECInfo struct {
-// object type.
+	ParentID oid.ID
-type AddressWithType struct {
+	Index    uint32
+	Total    uint32
+}
+
+// Info groups object address with its FrostFS
+// object info.
+type Info struct {
 	Address         oid.Address
 	Type            objectSDK.Type
 	IsLinkingObject bool
+	ECInfo          *ECInfo
 }
 
-func (v AddressWithType) String() string {
+func (v Info) String() string {
 	return fmt.Sprintf("address: %s, type: %s, is linking: %t", v.Address, v.Type, v.IsLinkingObject)
 }

pkg/local_object_storage/engine/evacuate.go

@@ -622,7 +622,7 @@ func (e *StorageEngine) getActualShards(shardIDs []string, prm EvacuateShardPrm)
 	return shards, nil
 }
 
-func (e *StorageEngine) evacuateObjects(ctx context.Context, sh *shard.Shard, toEvacuate []object.AddressWithType, prm EvacuateShardPrm, res *EvacuateShardRes,
+func (e *StorageEngine) evacuateObjects(ctx context.Context, sh *shard.Shard, toEvacuate []object.Info, prm EvacuateShardPrm, res *EvacuateShardRes,
 	shards []pooledShard, shardsToEvacuate map[string]*shard.Shard,
 ) error {
 	ctx, span := tracing.StartSpanFromContext(ctx, "StorageEngine.evacuateObjects",

pkg/local_object_storage/engine/list.go

@@ -68,12 +68,12 @@ func (p *ListWithCursorPrm) WithCursor(cursor *Cursor) {
 
 // ListWithCursorRes contains values returned from ListWithCursor operation.
 type ListWithCursorRes struct {
-	addrList []objectcore.AddressWithType
+	addrList []objectcore.Info
 	cursor   *Cursor
 }
 
 // AddressList returns addresses selected by ListWithCursor operation.
-func (l ListWithCursorRes) AddressList() []objectcore.AddressWithType {
+func (l ListWithCursorRes) AddressList() []objectcore.Info {
 	return l.addrList
 }
 
@@ -98,7 +98,7 @@ func (l ListWithCursorRes) Cursor() *Cursor {
 // Returns ErrEndOfListing if there are no more objects to return or count
 // parameter set to zero.
 func (e *StorageEngine) ListWithCursor(ctx context.Context, prm ListWithCursorPrm) (ListWithCursorRes, error) {
-	result := make([]objectcore.AddressWithType, 0, prm.count)
+	result := make([]objectcore.Info, 0, prm.count)
 
 	// Set initial cursors
 	cursor := prm.cursor

pkg/local_object_storage/engine/list_test.go

@@ -76,8 +76,8 @@ func TestListWithCursor(t *testing.T) {
 				require.NoError(t, e.Close(context.Background()))
 			}()
 
-			expected := make([]object.AddressWithType, 0, tt.objectNum)
+			expected := make([]object.Info, 0, tt.objectNum)
-			got := make([]object.AddressWithType, 0, tt.objectNum)
+			got := make([]object.Info, 0, tt.objectNum)
 
 			for i := 0; i < tt.objectNum; i++ {
 				containerID := cidtest.ID()
@@ -88,7 +88,7 @@ func TestListWithCursor(t *testing.T) {
 
 				err := e.Put(context.Background(), prm)
 				require.NoError(t, err)
-				expected = append(expected, object.AddressWithType{Type: objectSDK.TypeRegular, Address: object.AddressOf(obj)})
+				expected = append(expected, object.Info{Type: objectSDK.TypeRegular, Address: object.AddressOf(obj)})
 			}
 
 			var prm ListWithCursorPrm

pkg/local_object_storage/metabase/list.go

@@ -47,12 +47,12 @@ func (l *ListPrm) SetCursor(cursor *Cursor) {
 
 // ListRes contains values returned from ListWithCursor operation.
 type ListRes struct {
-	addrList []objectcore.AddressWithType
+	addrList []objectcore.Info
 	cursor   *Cursor
 }
 
 // AddressList returns addresses selected by ListWithCursor operation.
-func (l ListRes) AddressList() []objectcore.AddressWithType {
+func (l ListRes) AddressList() []objectcore.Info {
 	return l.addrList
 }
 
@@ -89,7 +89,7 @@ func (db *DB) ListWithCursor(ctx context.Context, prm ListPrm) (res ListRes, err
 		return res, ErrDegradedMode
 	}
 
-	result := make([]objectcore.AddressWithType, 0, prm.count)
+	result := make([]objectcore.Info, 0, prm.count)
 
 	err = db.boltDB.View(func(tx *bbolt.Tx) error {
 		res.addrList, res.cursor, err = db.listWithCursor(tx, result, prm.count, prm.cursor)
@@ -99,7 +99,7 @@ func (db *DB) ListWithCursor(ctx context.Context, prm ListPrm) (res ListRes, err
 	return res, metaerr.Wrap(err)
 }
 
-func (db *DB) listWithCursor(tx *bbolt.Tx, result []objectcore.AddressWithType, count int, cursor *Cursor) ([]objectcore.AddressWithType, *Cursor, error) {
+func (db *DB) listWithCursor(tx *bbolt.Tx, result []objectcore.Info, count int, cursor *Cursor) ([]objectcore.Info, *Cursor, error) {
 	threshold := cursor == nil // threshold is a flag to ignore cursor
 	var bucketName []byte
 	var err error
@@ -183,11 +183,11 @@ func selectNFromBucket(bkt *bbolt.Bucket, // main bucket
 	graveyardBkt, garbageBkt *bbolt.Bucket, // cached graveyard buckets
 	cidRaw []byte, // container ID prefix, optimization
 	cnt cid.ID, // container ID
-	to []objectcore.AddressWithType, // listing result
+	to []objectcore.Info, // listing result
 	limit int, // stop listing at `limit` items in result
 	cursor *Cursor, // start from cursor object
 	threshold bool, // ignore cursor and start immediately
-) ([]objectcore.AddressWithType, []byte, *Cursor, error) {
+) ([]objectcore.Info, []byte, *Cursor, error) {
 	if cursor == nil {
 		cursor = new(Cursor)
 	}
@@ -219,18 +219,27 @@ func selectNFromBucket(bkt *bbolt.Bucket, // main bucket
 		}
 
 		var isLinkingObj bool
+		var ecInfo *objectcore.ECInfo
 		if objType == objectSDK.TypeRegular {
 			var o objectSDK.Object
 			if err := o.Unmarshal(v); err != nil {
 				return nil, nil, nil, err
 			}
 			isLinkingObj = isLinkObject(&o)
+			ecHeader := o.ECHeader()
+			if ecHeader != nil {
+				ecInfo = &objectcore.ECInfo{
+					ParentID: ecHeader.Parent(),
+					Index:    ecHeader.Index(),
+					Total:    ecHeader.Total(),
+				}
+			}
 		}
 
 		var a oid.Address
 		a.SetContainer(cnt)
 		a.SetObject(obj)
-		to = append(to, objectcore.AddressWithType{Address: a, Type: objType, IsLinkingObject: isLinkingObj})
+		to = append(to, objectcore.Info{Address: a, Type: objType, IsLinkingObject: isLinkingObj, ECInfo: ecInfo})
 		count++
 	}
 

pkg/local_object_storage/metabase/list_test.go

@@ -77,7 +77,7 @@ func TestLisObjectsWithCursor(t *testing.T) {
 		total      = containers * 4 // regular + ts + child + lock
 	)
 
-	expected := make([]object.AddressWithType, 0, total)
+	expected := make([]object.Info, 0, total)
 
 	// fill metabase with objects
 	for i := 0; i < containers; i++ {
@@ -88,21 +88,21 @@ func TestLisObjectsWithCursor(t *testing.T) {
 		obj.SetType(objectSDK.TypeRegular)
 		err := putBig(db, obj)
 		require.NoError(t, err)
-		expected = append(expected, object.AddressWithType{Address: object.AddressOf(obj), Type: objectSDK.TypeRegular})
+		expected = append(expected, object.Info{Address: object.AddressOf(obj), Type: objectSDK.TypeRegular})
 
 		// add one tombstone
 		obj = testutil.GenerateObjectWithCID(containerID)
 		obj.SetType(objectSDK.TypeTombstone)
 		err = putBig(db, obj)
 		require.NoError(t, err)
-		expected = append(expected, object.AddressWithType{Address: object.AddressOf(obj), Type: objectSDK.TypeTombstone})
+		expected = append(expected, object.Info{Address: object.AddressOf(obj), Type: objectSDK.TypeTombstone})
 
 		// add one lock
 		obj = testutil.GenerateObjectWithCID(containerID)
 		obj.SetType(objectSDK.TypeLock)
 		err = putBig(db, obj)
 		require.NoError(t, err)
-		expected = append(expected, object.AddressWithType{Address: object.AddressOf(obj), Type: objectSDK.TypeLock})
+		expected = append(expected, object.Info{Address: object.AddressOf(obj), Type: objectSDK.TypeLock})
 
 		// add one inhumed (do not include into expected)
 		obj = testutil.GenerateObjectWithCID(containerID)
@@ -124,12 +124,12 @@ func TestLisObjectsWithCursor(t *testing.T) {
 		child.SetSplitID(splitID)
 		err = putBig(db, child)
 		require.NoError(t, err)
-		expected = append(expected, object.AddressWithType{Address: object.AddressOf(child), Type: objectSDK.TypeRegular})
+		expected = append(expected, object.Info{Address: object.AddressOf(child), Type: objectSDK.TypeRegular})
 	}
 
 	t.Run("success with various count", func(t *testing.T) {
 		for countPerReq := 1; countPerReq <= total; countPerReq++ {
-			got := make([]object.AddressWithType, 0, total)
+			got := make([]object.Info, 0, total)
 
 			res, cursor, err := metaListWithCursor(db, uint32(countPerReq), nil)
 			require.NoError(t, err, "count:%d", countPerReq)
@@ -211,7 +211,7 @@ func TestAddObjectDuringListingWithCursor(t *testing.T) {
 	}
 }
 
-func metaListWithCursor(db *meta.DB, count uint32, cursor *meta.Cursor) ([]object.AddressWithType, *meta.Cursor, error) {
+func metaListWithCursor(db *meta.DB, count uint32, cursor *meta.Cursor) ([]object.Info, *meta.Cursor, error) {
 	var listPrm meta.ListPrm
 	listPrm.SetCount(count)
 	listPrm.SetCursor(cursor)

pkg/local_object_storage/shard/list.go

@@ -42,7 +42,7 @@ type ListWithCursorPrm struct {
 
 // ListWithCursorRes contains values returned from ListWithCursor operation.
 type ListWithCursorRes struct {
-	addrList []objectcore.AddressWithType
+	addrList []objectcore.Info
 	cursor   *Cursor
 }
 
@@ -59,7 +59,7 @@ func (p *ListWithCursorPrm) WithCursor(cursor *Cursor) {
 }
 
 // AddressList returns addresses selected by ListWithCursor operation.
-func (r ListWithCursorRes) AddressList() []objectcore.AddressWithType {
+func (r ListWithCursorRes) AddressList() []objectcore.Info {
 	return r.addrList
 }
 

pkg/services/control/server/evacuate.go

@@ -77,7 +77,7 @@ func (s *Server) replicateObject(ctx context.Context, addr oid.Address, obj *obj
 		Obj:       obj,
 		Nodes:     nodes,
 	}
-	s.replicator.HandleTask(ctx, task, &res)
+	s.replicator.HandleReplicationTask(ctx, task, &res)
 
 	if res.count == 0 {
 		return errors.New("object was not replicated")

pkg/services/policer/check.go

@@ -18,19 +18,15 @@ import (
 	"go.uber.org/zap"
 )
 
-func (p *Policer) processObject(ctx context.Context, addrWithType objectcore.AddressWithType) error {
+func (p *Policer) processObject(ctx context.Context, objInfo objectcore.Info) error {
-	addr := addrWithType.Address
+	cnr, err := p.cnrSrc.Get(objInfo.Address.Container())
-	idCnr := addr.Container()
-	idObj := addr.Object()
-
-	cnr, err := p.cnrSrc.Get(idCnr)
 	if err != nil {
 		if client.IsErrContainerNotFound(err) {
-			existed, errWasRemoved := containercore.WasRemoved(p.cnrSrc, idCnr)
+			existed, errWasRemoved := containercore.WasRemoved(p.cnrSrc, objInfo.Address.Container())
 			if errWasRemoved != nil {
 				return fmt.Errorf("%s: %w", logs.PolicerCouldNotConfirmContainerRemoval, errWasRemoved)
 			} else if existed {
-				err := p.buryFn(ctx, addrWithType.Address)
+				err := p.buryFn(ctx, objInfo.Address)
 				if err != nil {
 					return fmt.Errorf("%s: %w", logs.PolicerCouldNotInhumeObjectWithMissingContainer, err)
 				}
@@ -41,11 +37,16 @@ func (p *Policer) processObject(ctx context.Context, addrWithType objectcore.Add
 	}
 
 	policy := cnr.Value.PlacementPolicy()
-	if policycore.IsECPlacement(policy) {
-		// EC not supported yet by policer
-		return nil
-	}
 
+	if policycore.IsECPlacement(policy) {
+		return p.processECContainerObject(ctx, objInfo, policy)
+	}
+	return p.processRepContainerObject(ctx, objInfo, policy)
+}
+
+func (p *Policer) processRepContainerObject(ctx context.Context, objInfo objectcore.Info, policy netmap.PlacementPolicy) error {
+	idObj := objInfo.Address.Object()
+	idCnr := objInfo.Address.Container()
 	nn, err := p.placementBuilder.BuildPlacement(idCnr, &idObj, policy)
 	if err != nil {
 		return fmt.Errorf("%s: %w", logs.PolicerCouldNotBuildPlacementVectorForObject, err)
@@ -68,15 +69,15 @@ func (p *Policer) processObject(ctx context.Context, addrWithType objectcore.Add
 		default:
 		}
 
-		p.processNodes(ctx, c, addrWithType, nn[i], policy.ReplicaDescriptor(i).NumberOfObjects(), checkedNodes)
+		p.processRepNodes(ctx, c, objInfo, nn[i], policy.ReplicaDescriptor(i).NumberOfObjects(), checkedNodes)
 	}
 
 	if !c.needLocalCopy && c.removeLocalCopy {
 		p.log.Info(logs.PolicerRedundantLocalObjectCopyDetected,
-			zap.Stringer("object", addr),
+			zap.Stringer("object", objInfo.Address),
 		)
 
-		p.cbRedundantCopy(ctx, addr)
+		p.cbRedundantCopy(ctx, objInfo.Address)
 	}
 	return nil
 }
@@ -89,16 +90,16 @@ type placementRequirements struct {
 	removeLocalCopy bool
 }
 
-func (p *Policer) processNodes(ctx context.Context, requirements *placementRequirements, addrWithType objectcore.AddressWithType,
+func (p *Policer) processRepNodes(ctx context.Context, requirements *placementRequirements, objInfo objectcore.Info,
 	nodes []netmap.NodeInfo, shortage uint32, checkedNodes nodeCache,
 ) {
-	addr := addrWithType.Address
+	addr := objInfo.Address
-	typ := addrWithType.Type
+	typ := objInfo.Type
 
 	// Number of copies that are stored on maintenance nodes.
 	var uncheckedCopies int
 
-	if typ == objectSDK.TypeLock || typ == objectSDK.TypeTombstone || addrWithType.IsLinkingObject {
+	if typ == objectSDK.TypeLock || typ == objectSDK.TypeTombstone || objInfo.IsLinkingObject {
 		// all nodes of a container must store the `LOCK`, `TOMBSTONE` and linking objects
 		// for correct object removal protection:
 		//   - `LOCK`, `TOMBSTONE` and linking objects are broadcast on their PUT requests;
@@ -196,7 +197,7 @@ func (p *Policer) handleProcessNodesResult(ctx context.Context, addr oid.Address
 			Nodes:     nodes,
 		}
 
-		p.replicator.HandleTask(ctx, task, checkedNodes)
+		p.replicator.HandleReplicationTask(ctx, task, checkedNodes)
 
 	case uncheckedCopies > 0:
 		// If we have more copies than needed, but some of them are from the maintenance nodes,

pkg/services/policer/ec.go

@@ -0,0 +1,137 @@
+package policer
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	objectcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/replicator"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+	"go.uber.org/zap"
+)
+
+var errInvalidECPlacement = errors.New("invalid EC placement: EC placement must have one placement vector")
+
+func (p *Policer) processECContainerObject(ctx context.Context, objInfo objectcore.Info, policy netmap.PlacementPolicy) error {
+	if objInfo.ECInfo == nil {
+		return p.processECContainerRepObject(ctx, objInfo, policy)
+	}
+	return p.processECContainerECObject(ctx, objInfo, policy)
+}
+
+// processECContainerRepObject processes non erasure coded objects in EC container: tombstones, locks and linking objects.
+// All of them must be stored on all of the container nodes.
+func (p *Policer) processECContainerRepObject(ctx context.Context, objInfo objectcore.Info, policy netmap.PlacementPolicy) error {
+	objID := objInfo.Address.Object()
+	nn, err := p.placementBuilder.BuildPlacement(objInfo.Address.Container(), &objID, policy)
+	if err != nil {
+		return fmt.Errorf("%s: %w", logs.PolicerCouldNotBuildPlacementVectorForObject, err)
+	}
+	if len(nn) != 1 {
+		return errInvalidECPlacement
+	}
+
+	c := &placementRequirements{}
+	checkedNodes := newNodeCache()
+
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	default:
+	}
+
+	rd := policy.ReplicaDescriptor(0)
+	// processNodes replaces rd.GetECDataCount() + rd.GetECParityCount() for len(nn[0]) for locks, tomstones and linking objects.
+	p.processRepNodes(ctx, c, objInfo, nn[0], rd.GetECDataCount()+rd.GetECParityCount(), checkedNodes)
+
+	if !c.needLocalCopy && c.removeLocalCopy {
+		p.log.Info(logs.PolicerRedundantLocalObjectCopyDetected,
+			zap.Stringer("object", objInfo.Address),
+		)
+
+		p.cbRedundantCopy(ctx, objInfo.Address)
+	}
+	return nil
+}
+
+func (p *Policer) processECContainerECObject(ctx context.Context, objInfo objectcore.Info, policy netmap.PlacementPolicy) error {
+	nn, err := p.placementBuilder.BuildPlacement(objInfo.Address.Container(), &objInfo.ECInfo.ParentID, policy)
+	if err != nil {
+		return fmt.Errorf("%s: %w", logs.PolicerCouldNotBuildPlacementVectorForObject, err)
+	}
+	if len(nn) != 1 {
+		return errInvalidECPlacement
+	}
+
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	default:
+	}
+
+	validPlacement := p.processECChunk(ctx, objInfo, nn[0])
+	if !validPlacement {
+		p.pullRequiredECChunks(ctx, objInfo, nn[0])
+	}
+	return nil
+}
+
+// processECChunk replicates EC chunk if needed.
+// Returns True if current chunk should be stored on current node.
+func (p *Policer) processECChunk(ctx context.Context, objInfo objectcore.Info, nodes []netmap.NodeInfo) bool {
+	var removeLocalChunk bool
+	requiredNode := nodes[int(objInfo.ECInfo.Index)%(len(nodes))]
+	if p.cfg.netmapKeys.IsLocalKey(requiredNode.PublicKey()) {
+		// current node is required node, we are happy
+		return true
+	}
+	if requiredNode.IsMaintenance() {
+		// consider maintenance mode has object, but do not drop local copy
+		p.log.Debug(logs.PolicerConsiderNodeUnderMaintenanceAsOK, zap.String("node", netmap.StringifyPublicKey(requiredNode)))
+		return false
+	}
+
+	callCtx, cancel := context.WithTimeout(ctx, p.headTimeout)
+	_, err := p.remoteHeader(callCtx, requiredNode, objInfo.Address)
+	cancel()
+
+	if err == nil {
+		removeLocalChunk = true
+	} else if client.IsErrObjectNotFound(err) {
+		p.log.Debug(logs.PolicerShortageOfObjectCopiesDetected, zap.Stringer("object", objInfo.Address), zap.Uint32("shortage", 1))
+		task := replicator.Task{
+			NumCopies: 1,
+			Addr:      objInfo.Address,
+			Nodes:     []netmap.NodeInfo{requiredNode},
+		}
+		p.replicator.HandleReplicationTask(ctx, task, newNodeCache())
+	} else if isClientErrMaintenance(err) {
+		// consider maintenance mode has object, but do not drop local copy
+		p.log.Debug(logs.PolicerConsiderNodeUnderMaintenanceAsOK, zap.String("node", netmap.StringifyPublicKey(requiredNode)))
+	} else {
+		p.log.Error(logs.PolicerReceiveObjectHeaderToCheckPolicyCompliance, zap.Stringer("object", objInfo.Address), zap.String("error", err.Error()))
+	}
+
+	if removeLocalChunk {
+		p.log.Info(logs.PolicerRedundantLocalObjectCopyDetected, zap.Stringer("object", objInfo.Address))
+		p.cbRedundantCopy(ctx, objInfo.Address)
+	}
+
+	return false
+}
+
+func (p *Policer) pullRequiredECChunks(_ context.Context, objInfo objectcore.Info, nodes []netmap.NodeInfo) {
+	requiredChunkIndexes := make(map[uint32]struct{})
+	for i, n := range nodes {
+		if p.cfg.netmapKeys.IsLocalKey(n.PublicKey()) {
+			requiredChunkIndexes[uint32(i)] = struct{}{}
+		}
+	}
+	if len(requiredChunkIndexes) == 0 {
+		p.log.Info(logs.PolicerNodeIsNotContainerNodeForECObject, zap.Stringer("object", objInfo.ECInfo.ParentID))
+		return
+	}
+}

pkg/services/policer/option.go

@@ -22,7 +22,7 @@ import (
 // Note that the underlying implementation might be circular: i.e. it can restart
 // when the end of the key space is reached.
 type KeySpaceIterator interface {
-	Next(context.Context, uint32) ([]objectcore.AddressWithType, error)
+	Next(context.Context, uint32) ([]objectcore.Info, error)
 	Rewind()
 }
 
@@ -35,7 +35,7 @@ type BuryFunc func(context.Context, oid.Address) error
 
 // Replicator is the interface to a consumer of replication tasks.
 type Replicator interface {
-	HandleTask(ctx context.Context, task replicator.Task, res replicator.TaskResult)
+	HandleReplicationTask(ctx context.Context, task replicator.Task, res replicator.TaskResult)
 }
 
 // RemoteObjectHeaderFunc is the function to obtain HEAD info from a specific remote node.

pkg/services/policer/policer_test.go

@@ -26,7 +26,7 @@ import (
 func TestBuryObjectWithoutContainer(t *testing.T) {
 	// Key space
 	addr := oidtest.Address()
-	objs := []objectcore.AddressWithType{
+	objs := []objectcore.Info{
 		{
 			Address: addr,
 			Type:    objectSDK.TypeRegular,
@@ -78,6 +78,7 @@ func TestProcessObject(t *testing.T) {
 		maintenanceNodes    []int
 		wantRemoveRedundant bool
 		wantReplicateTo     []int
+		ecInfo              *objectcore.ECInfo
 	}{
 		{
 			desc:      "1 copy already held by local node",
@@ -144,6 +145,47 @@ func TestProcessObject(t *testing.T) {
 			objHolders:       []int{1},
 			maintenanceNodes: []int{2},
 		},
+		{
+			desc:            "lock object must be replicated to all EC nodes",
+			objType:         objectSDK.TypeLock,
+			nodeCount:       3,
+			policy:          `EC 1.1`,
+			placement:       [][]int{{0, 1, 2}},
+			wantReplicateTo: []int{1, 2},
+		},
+		{
+			desc:            "tombstone object must be replicated to all EC nodes",
+			objType:         objectSDK.TypeTombstone,
+			nodeCount:       3,
+			policy:          `EC 1.1`,
+			placement:       [][]int{{0, 1, 2}},
+			wantReplicateTo: []int{1, 2},
+		},
+		{
+			desc:      "EC chunk stored valid on current node",
+			objType:   objectSDK.TypeRegular,
+			nodeCount: 2,
+			policy:    `EC 1.1`,
+			placement: [][]int{{0}},
+			ecInfo: &objectcore.ECInfo{
+				ParentID: oidtest.ID(),
+				Index:    1,
+				Total:    2,
+			},
+		},
+		{
+			desc:            "EC chunk must be replicated to other EC node",
+			objType:         objectSDK.TypeRegular,
+			nodeCount:       2,
+			policy:          `EC 1.1`,
+			placement:       [][]int{{1}},
+			wantReplicateTo: []int{1},
+			ecInfo: &objectcore.ECInfo{
+				ParentID: oidtest.ID(),
+				Index:    1,
+				Total:    2,
+			},
+		},
 	}
 
 	for i := range tests {
@@ -173,6 +215,9 @@ func TestProcessObject(t *testing.T) {
 				if cnr.Equals(addr.Container()) && obj != nil && obj.Equals(addr.Object()) {
 					return placementVectors, nil
 				}
+				if ti.ecInfo != nil && cnr.Equals(addr.Container()) && obj != nil && obj.Equals(ti.ecInfo.ParentID) {
+					return placementVectors, nil
+				}
 				t.Errorf("unexpected placement build: cid=%v oid=%v", cnr, obj)
 				return nil, errors.New("unexpected placement build")
 			}
@@ -238,9 +283,10 @@ func TestProcessObject(t *testing.T) {
 				WithPool(testPool(t)),
 			)
 
-			addrWithType := objectcore.AddressWithType{
+			addrWithType := objectcore.Info{
 				Address: addr,
 				Type:    ti.objType,
+				ECInfo:  ti.ecInfo,
 			}
 
 			err := p.processObject(context.Background(), addrWithType)
@@ -276,7 +322,7 @@ func TestProcessObjectError(t *testing.T) {
 		WithPool(testPool(t)),
 	)
 
-	addrWithType := objectcore.AddressWithType{
+	addrWithType := objectcore.Info{
 		Address: addr,
 	}
 
@@ -285,7 +331,7 @@ func TestProcessObjectError(t *testing.T) {
 
 func TestIteratorContract(t *testing.T) {
 	addr := oidtest.Address()
-	objs := []objectcore.AddressWithType{{
+	objs := []objectcore.Info{{
 		Address: addr,
 		Type:    objectSDK.TypeRegular,
 	}}
@@ -350,7 +396,7 @@ func testPool(t *testing.T) *ants.Pool {
 }
 
 type nextResult struct {
-	objs []objectcore.AddressWithType
+	objs []objectcore.Info
 	err  error
 }
 
@@ -361,7 +407,7 @@ type predefinedIterator struct {
 	calls    []string
 }
 
-func (it *predefinedIterator) Next(ctx context.Context, size uint32) ([]objectcore.AddressWithType, error) {
+func (it *predefinedIterator) Next(ctx context.Context, size uint32) ([]objectcore.Info, error) {
 	if it.pos == len(it.scenario) {
 		close(it.finishCh)
 		<-ctx.Done()
@@ -380,11 +426,11 @@ func (it *predefinedIterator) Rewind() {
 
 // sliceKeySpaceIterator is a KeySpaceIterator backed by a slice.
 type sliceKeySpaceIterator struct {
-	objs []objectcore.AddressWithType
+	objs []objectcore.Info
 	cur  int
 }
 
-func (it *sliceKeySpaceIterator) Next(_ context.Context, size uint32) ([]objectcore.AddressWithType, error) {
+func (it *sliceKeySpaceIterator) Next(_ context.Context, size uint32) ([]objectcore.Info, error) {
 	if it.cur >= len(it.objs) {
 		return nil, engine.ErrEndOfListing
 	}
@@ -422,6 +468,6 @@ func (f announcedKeysFunc) IsLocalKey(k []byte) bool { return f(k) }
 // replicatorFunc is a Replicator backed by a function.
 type replicatorFunc func(context.Context, replicator.Task, replicator.TaskResult)
 
-func (f replicatorFunc) HandleTask(ctx context.Context, task replicator.Task, res replicator.TaskResult) {
+func (f replicatorFunc) HandleReplicationTask(ctx context.Context, task replicator.Task, res replicator.TaskResult) {
 	f(ctx, task, res)
 }

pkg/services/replicator/process.go

@@ -21,9 +21,9 @@ type TaskResult interface {
 	SubmitSuccessfulReplication(netmap.NodeInfo)
 }
 
-// HandleTask executes replication task inside invoking goroutine.
+// HandleReplicationTask executes replication task inside invoking goroutine.
 // Passes all the nodes that accepted the replication to the TaskResult.
-func (p *Replicator) HandleTask(ctx context.Context, task Task, res TaskResult) {
+func (p *Replicator) HandleReplicationTask(ctx context.Context, task Task, res TaskResult) {
 	p.metrics.IncInFlightRequest()
 	defer p.metrics.DecInFlightRequest()
 	defer func() {