add state sync full, complete full state sync stage

api/service/stagedstreamsync/stage_statesync_full.go

@@ -0,0 +1,449 @@
+package stagedstreamsync
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/harmony-one/harmony/core"
+	"github.com/harmony-one/harmony/internal/utils"
+	sttypes "github.com/harmony-one/harmony/p2p/stream/types"
+	"github.com/pkg/errors"
+
+	//sttypes "github.com/harmony-one/harmony/p2p/stream/types"
+	"github.com/ledgerwatch/erigon-lib/kv"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/rs/zerolog"
+)
+
+type StageFullStateSync struct {
+	configs StageFullStateSyncCfg
+}
+
+type StageFullStateSyncCfg struct {
+	bc          core.BlockChain
+	db          kv.RwDB
+	concurrency int
+	protocol    syncProtocol
+	logger      zerolog.Logger
+	logProgress bool
+}
+
+func NewStageFullStateSync(cfg StageFullStateSyncCfg) *StageFullStateSync {
+	return &StageFullStateSync{
+		configs: cfg,
+	}
+}
+
+func NewStageFullStateSyncCfg(bc core.BlockChain,
+	db kv.RwDB,
+	concurrency int,
+	protocol syncProtocol,
+	logger zerolog.Logger,
+	logProgress bool) StageFullStateSyncCfg {
+
+	return StageFullStateSyncCfg{
+		bc:          bc,
+		db:          db,
+		concurrency: concurrency,
+		protocol:    protocol,
+		logger:      logger,
+		logProgress: logProgress,
+	}
+}
+
+// Exec progresses States stage in the forward direction
+func (sss *StageFullStateSync) Exec(ctx context.Context, bool, invalidBlockRevert bool, s *StageState, reverter Reverter, tx kv.RwTx) (err error) {
+
+	// for short range sync, skip this step
+	if !s.state.initSync {
+		return nil
+	} // only execute this stage in fast/snap sync mode and once we reach to pivot
+
+	if s.state.status.pivotBlock == nil ||
+		s.state.CurrentBlockNumber() != s.state.status.pivotBlock.NumberU64() ||
+		s.state.status.statesSynced {
+		return nil
+	}
+
+	s.state.Debug("STATE SYNC ======================================================>", "started")
+	// maxHeight := s.state.status.targetBN
+	// currentHead := s.state.CurrentBlockNumber()
+	// if currentHead >= maxHeight {
+	// 	return nil
+	// }
+	// currProgress := s.state.CurrentBlockNumber()
+	// targetHeight := s.state.currentCycle.TargetHeight
+
+	// if errV := CreateView(ctx, sss.configs.db, tx, func(etx kv.Tx) error {
+	// 	if currProgress, err = s.CurrentStageProgress(etx); err != nil {
+	// 		return err
+	// 	}
+	// 	return nil
+	// }); errV != nil {
+	// 	return errV
+	// }
+
+	// if currProgress >= targetHeight {
+	// 	return nil
+	// }
+	useInternalTx := tx == nil
+	if useInternalTx {
+		var err error
+		tx, err = sss.configs.db.BeginRw(ctx)
+		if err != nil {
+			return err
+		}
+		defer tx.Rollback()
+	}
+
+	// isLastCycle := targetHeight >= maxHeight
+	startTime := time.Now()
+
+	if sss.configs.logProgress {
+		fmt.Print("\033[s") // save the cursor position
+	}
+
+	// Fetch states from neighbors
+	pivotRootHash := s.state.status.pivotBlock.Root()
+	currentBlockRootHash := s.state.bc.CurrentFastBlock().Root()
+	scheme := sss.configs.bc.TrieDB().Scheme()
+	sdm := newFullStateDownloadManager(sss.configs.bc.ChainDb(), scheme, tx, sss.configs.bc, sss.configs.concurrency, s.state.logger)
+	sdm.setRootHash(currentBlockRootHash)
+	s.state.Debug("StateSync/setRootHash", pivotRootHash)
+	s.state.Debug("StateSync/currentFastBlockRoot", currentBlockRootHash)
+	s.state.Debug("StateSync/pivotBlockNumber", s.state.status.pivotBlock.NumberU64())
+	s.state.Debug("StateSync/currentFastBlockNumber", s.state.bc.CurrentFastBlock().NumberU64())
+	var wg sync.WaitGroup
+	for i := 0; i < s.state.config.Concurrency; i++ {
+		wg.Add(1)
+		go sss.runStateWorkerLoop(ctx, sdm, &wg, i, startTime, s)
+	}
+	wg.Wait()
+
+	// insert block
+	if err := sss.configs.bc.WriteHeadBlock(s.state.status.pivotBlock); err != nil {
+		sss.configs.logger.Warn().Err(err).
+			Uint64("pivot block number", s.state.status.pivotBlock.NumberU64()).
+			Msg(WrapStagedSyncMsg("insert pivot block failed"))
+		s.state.Debug("StateSync/pivot/insert/error", err)
+		// TODO: panic("pivot block is failed to insert in chain.")
+		return err
+	}
+
+	// states should be fully synced in this stage
+	s.state.status.statesSynced = true
+
+	s.state.Debug("StateSync/pivot/num", s.state.status.pivotBlock.NumberU64())
+	s.state.Debug("StateSync/pivot/insert", "done")
+
+	/*
+		gbm := s.state.gbm
+
+		// Setup workers to fetch states from remote node
+		var wg sync.WaitGroup
+		curHeight := s.state.CurrentBlockNumber()
+
+		for bn := curHeight + 1; bn <= gbm.targetBN; bn++ {
+			root := gbm.GetRootHash(bn)
+			if root == emptyHash {
+				continue
+			}
+			sdm.setRootHash(root)
+			for i := 0; i < s.state.config.Concurrency; i++ {
+				wg.Add(1)
+				go sss.runStateWorkerLoop(ctx, sdm, &wg, i, startTime, s)
+			}
+			wg.Wait()
+		}
+	*/
+
+	if useInternalTx {
+		if err := tx.Commit(); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// runStateWorkerLoop creates a work loop for download states
+func (sss *StageFullStateSync) runStateWorkerLoop(ctx context.Context, sdm *FullStateDownloadManager, wg *sync.WaitGroup, loopID int, startTime time.Time, s *StageState) {
+
+	s.state.Debug("runStateWorkerLoop/info", "started")
+
+	defer wg.Done()
+
+	for {
+		select {
+		case <-ctx.Done():
+			s.state.Debug("runStateWorkerLoop/ctx/done", "Finished")
+			return
+		default:
+		}
+		accountTasks, codes, storages, healtask, codetask, err := sdm.GetNextBatch()
+		s.state.Debug("runStateWorkerLoop/batch/len", len(accountTasks)+len(codes)+len(storages.accounts))
+		s.state.Debug("runStateWorkerLoop/batch/heals/len", len(healtask.hashes)+len(codetask.hashes))
+		s.state.Debug("runStateWorkerLoop/batch/err", err)
+		if len(accountTasks)+len(codes)+len(storages.accounts)+len(healtask.hashes)+len(codetask.hashes) == 0 || err != nil {
+			select {
+			case <-ctx.Done():
+				return
+			case <-time.After(100 * time.Millisecond):
+				return
+			}
+		}
+		s.state.Debug("runStateWorkerLoop/batch/accounts", accountTasks)
+		s.state.Debug("runStateWorkerLoop/batch/codes", codes)
+
+		if len(accountTasks) > 0 {
+
+			task := accountTasks[0]
+			origin := task.Next
+			limit := task.Last
+			root := sdm.root
+			cap := maxRequestSize
+			retAccounts, proof, stid, err := sss.configs.protocol.GetAccountRange(ctx, root, origin, limit, uint64(cap))
+			if err != nil {
+				return
+			}
+			if err := sdm.HandleAccountRequestResult(task, retAccounts, proof, origin[:], limit[:], loopID, stid); err != nil {
+				return
+			}
+
+		} else if len(codes)+len(storages.accounts) > 0 {
+
+			if len(codes) > 0 {
+				stid, err := sss.downloadByteCodes(ctx, sdm, codes, loopID)
+				if err != nil {
+					if !errors.Is(err, context.Canceled) && !errors.Is(err, context.DeadlineExceeded) {
+						sss.configs.protocol.StreamFailed(stid, "downloadByteCodes failed")
+					}
+					utils.Logger().Error().
+						Err(err).
+						Str("stream", string(stid)).
+						Msg(WrapStagedSyncMsg("downloadByteCodes failed"))
+					err = errors.Wrap(err, "request error")
+					sdm.HandleRequestError(accountTasks, codes, storages, healtask, codetask, stid, err)
+					return
+				}
+			}
+
+			if len(storages.accounts) > 0 {
+				root := sdm.root
+				roots := storages.roots
+				accounts := storages.accounts
+				cap := maxRequestSize
+				origin := storages.origin
+				limit := storages.limit
+				mainTask := storages.mainTask
+				subTask := storages.subtask
+
+				slots, proof, stid, err := sss.configs.protocol.GetStorageRanges(ctx, root, accounts, origin, limit, uint64(cap))
+				if err != nil {
+					return
+				}
+				if err := sdm.HandleStorageRequestResult(mainTask, subTask, accounts, roots, origin, limit, slots, proof, loopID, stid); err != nil {
+					return
+				}
+			}
+
+			// data, stid, err := sss.downloadStates(ctx, accounts, codes, storages)
+			// if err != nil {
+			// 	s.state.Debug("runStateWorkerLoop/downloadStates/error", err)
+			// 	if !errors.Is(err, context.Canceled) && !errors.Is(err, context.DeadlineExceeded) {
+			// 		sss.configs.protocol.StreamFailed(stid, "downloadStates failed")
+			// 	}
+			// 	utils.Logger().Error().
+			// 		Err(err).
+			// 		Str("stream", string(stid)).
+			// 		Msg(WrapStagedSyncMsg("downloadStates failed"))
+			// 	err = errors.Wrap(err, "request error")
+			// 	sdm.HandleRequestError(codes, paths, stid, err)
+			// } else if data == nil || len(data) == 0 {
+			// 	s.state.Debug("runStateWorkerLoop/downloadStates/data", "nil array")
+			// 	utils.Logger().Warn().
+			// 		Str("stream", string(stid)).
+			// 		Msg(WrapStagedSyncMsg("downloadStates failed, received empty data bytes"))
+			// 	err := errors.New("downloadStates received empty data bytes")
+			// 	sdm.HandleRequestError(codes, paths, stid, err)
+			// } else {
+			// 	s.state.Debug("runStateWorkerLoop/downloadStates/data/len", len(data))
+			// 	sdm.HandleRequestResult(nodes, paths, data, loopID, stid)
+			// 	if sss.configs.logProgress {
+			// 		//calculating block download speed
+			// 		dt := time.Now().Sub(startTime).Seconds()
+			// 		speed := float64(0)
+			// 		if dt > 0 {
+			// 			speed = float64(len(data)) / dt
+			// 		}
+			// 		stateDownloadSpeed := fmt.Sprintf("%.2f", speed)
+
+			// 		fmt.Print("\033[u\033[K") // restore the cursor position and clear the line
+			// 		fmt.Println("state download speed:", stateDownloadSpeed, "states/s")
+			// 	}
+			// }
+
+		} else {
+			// assign trie node Heal Tasks
+			if len(healtask.hashes) > 0 {
+				root := sdm.root
+				task := healtask.task
+				hashes := healtask.hashes
+				pathsets := healtask.pathsets
+				paths := healtask.paths
+
+				nodes, stid, err := sss.configs.protocol.GetTrieNodes(ctx, root, pathsets, maxRequestSize)
+				if err != nil {
+					return
+				}
+				if err := sdm.HandleTrieNodeHealRequestResult(task, paths, hashes, nodes, loopID, stid); err != nil {
+					return
+				}
+			}
+
+			if len(codetask.hashes) > 0 {
+				task := codetask.task
+				hashes := codetask.hashes
+				codes, stid, err := sss.configs.protocol.GetByteCodes(ctx, hashes, maxRequestSize)
+				if err != nil {
+					return
+				}
+				if err := sdm.HandleBytecodeRequestResult(task, hashes, codes, loopID, stid); err != nil {
+					return
+				}
+			}
+		}
+	}
+}
+
+func (sss *StageFullStateSync) downloadByteCodes(ctx context.Context, sdm *FullStateDownloadManager, codeTasks []*byteCodeTasksBundle, loopID int) (stid sttypes.StreamID, err error) {
+	for _, codeTask := range codeTasks {
+		// try to get byte codes from remote peer
+		// if any of them failed, the stid will be the id of the failed stream
+		retCodes, stid, err := sss.configs.protocol.GetByteCodes(ctx, codeTask.hashes, maxRequestSize)
+		if err != nil {
+			return stid, err
+		}
+		if err = sdm.HandleBytecodeRequestResult(codeTask.task, codeTask.hashes, retCodes, loopID, stid); err != nil {
+			return stid, err
+		}
+	}
+	return
+}
+
+func (sss *StageFullStateSync) downloadStorages(ctx context.Context, sdm *FullStateDownloadManager, codeTasks []*byteCodeTasksBundle, loopID int) (stid sttypes.StreamID, err error) {
+	for _, codeTask := range codeTasks {
+		// try to get byte codes from remote peer
+		// if any of them failed, the stid will be the id of failed stream
+		retCodes, stid, err := sss.configs.protocol.GetByteCodes(ctx, codeTask.hashes, maxRequestSize)
+		if err != nil {
+			return stid, err
+		}
+		if err = sdm.HandleBytecodeRequestResult(codeTask.task, codeTask.hashes, retCodes, loopID, stid); err != nil {
+			return stid, err
+		}
+	}
+	return
+}
+
+// func (sss *StageFullStateSync) downloadStates(ctx context.Context,
+// 	root common.Hash,
+// 	origin common.Hash,
+// 	accounts []*accountTask,
+// 	codes []common.Hash,
+// 	storages *storageTaskBundle) ([][]byte, sttypes.StreamID, error) {
+
+// 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
+// 	defer cancel()
+
+// 	// if there is any account task, first we have to complete that
+// 	if len(accounts) > 0 {
+
+// 	}
+// 	// hashes := append(codes, nodes...)
+// 	// data, stid, err := sss.configs.protocol.GetNodeData(ctx, hashes)
+// 	// if err != nil {
+// 	// 	return nil, stid, err
+// 	// }
+// 	// if err := validateGetNodeDataResult(hashes, data); err != nil {
+// 	// 	return nil, stid, err
+// 	// }
+// 	return data, stid, nil
+// }
+
+func (stg *StageFullStateSync) insertChain(gbm *blockDownloadManager,
+	protocol syncProtocol,
+	lbls prometheus.Labels,
+	targetBN uint64) {
+
+}
+
+func (stg *StageFullStateSync) saveProgress(s *StageState, tx kv.RwTx) (err error) {
+
+	useInternalTx := tx == nil
+	if useInternalTx {
+		var err error
+		tx, err = stg.configs.db.BeginRw(context.Background())
+		if err != nil {
+			return err
+		}
+		defer tx.Rollback()
+	}
+
+	// save progress
+	if err = s.Update(tx, s.state.CurrentBlockNumber()); err != nil {
+		utils.Logger().Error().
+			Err(err).
+			Msgf("[STAGED_SYNC] saving progress for block States stage failed")
+		return ErrSaveStateProgressFail
+	}
+
+	if useInternalTx {
+		if err := tx.Commit(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (stg *StageFullStateSync) Revert(ctx context.Context, firstCycle bool, u *RevertState, s *StageState, tx kv.RwTx) (err error) {
+	useInternalTx := tx == nil
+	if useInternalTx {
+		tx, err = stg.configs.db.BeginRw(ctx)
+		if err != nil {
+			return err
+		}
+		defer tx.Rollback()
+	}
+
+	if err = u.Done(tx); err != nil {
+		return err
+	}
+
+	if useInternalTx {
+		if err = tx.Commit(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (stg *StageFullStateSync) CleanUp(ctx context.Context, firstCycle bool, p *CleanUpState, tx kv.RwTx) (err error) {
+	useInternalTx := tx == nil
+	if useInternalTx {
+		tx, err = stg.configs.db.BeginRw(ctx)
+		if err != nil {
+			return err
+		}
+		defer tx.Rollback()
+	}
+
+	if useInternalTx {
+		if err = tx.Commit(); err != nil {
+			return err
+		}
+	}
+	return nil
+}

api/service/stagedstreamsync/state_sync_full.go

@@ -3,6 +3,7 @@ package stagedstreamsync
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	gomath "math"
 	"math/big"
 	"math/rand"
@@ -17,11 +18,14 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/trie"
+
+	//"github.com/ethereum/go-ethereum/trie/trienode"
 	"github.com/harmony-one/harmony/common/math"
 	"github.com/harmony-one/harmony/core"
 	"github.com/harmony-one/harmony/core/rawdb"
 	"github.com/harmony-one/harmony/core/state"
 	"github.com/harmony-one/harmony/internal/utils"
+	"github.com/harmony-one/harmony/p2p/stream/protocols/sync/message"
 	sttypes "github.com/harmony-one/harmony/p2p/stream/types"
 	"github.com/ledgerwatch/erigon-lib/kv"
 	"github.com/ledgerwatch/log/v3"
@@ -191,7 +195,7 @@ func (t *healRequestSort) Swap(i, j int) {
 // Merge merges the pathsets, so that several storage requests concerning the
 // same account are merged into one, to reduce bandwidth.
 // This operation is moot if t has not first been sorted.
-func (t *healRequestSort) Merge() []TrieNodePathSet {
+func (t *healRequestSort) Merge() []*message.TrieNodePathSet {
 	var result []TrieNodePathSet
 	for _, path := range t.syncPaths {
 		pathset := TrieNodePathSet(path)
@@ -211,7 +215,20 @@ func (t *healRequestSort) Merge() []TrieNodePathSet {
 			}
 		}
 	}
-	return result
+	// convert to array of pointers
+	result_ptr := make([]*message.TrieNodePathSet, 0)
+	for _, p := range result {
+		result_ptr = append(result_ptr, &message.TrieNodePathSet{
+			Pathset: p,
+		})
+	}
+	return result_ptr
+}
+
+type byteCodeTasksBundle struct {
+	id     uint64 //unique id for bytecode task bundle
+	task   *accountTask
+	hashes []common.Hash
 }
 
 type storageTaskBundle struct {
@@ -231,7 +248,7 @@ type healTask struct {
 	codeTasks   map[common.Hash]struct{} // Set of byte code tasks currently queued for retrieval, indexed by code hash
 	paths       []string
 	hashes      []common.Hash
-	pathsets    []TrieNodePathSet
+	pathsets    []*message.TrieNodePathSet
 	task        *healTask
 	root        common.Hash
 	byteCodeReq bool
@@ -240,7 +257,7 @@ type healTask struct {
 type tasks struct {
 	accountTasks map[uint64]*accountTask         // Current account task set being synced
 	storageTasks map[uint64]*storageTaskBundle   // Set of trie node tasks currently queued for retrieval, indexed by path
-	codeTasks    map[common.Hash]struct{}      // Set of byte code tasks currently queued for retrieval, indexed by hash
+	codeTasks    map[uint64]*byteCodeTasksBundle // Set of byte code tasks currently queued for retrieval, indexed by hash
 	healer       map[uint64]*healTask
 	snapped      bool // Flag to signal that snap phase is done
 }
@@ -249,7 +266,7 @@ func newTasks() *tasks {
 	return &tasks{
 		accountTasks: make(map[uint64]*accountTask, 0),
 		storageTasks: make(map[uint64]*storageTaskBundle, 0),
-		codeTasks:    make(map[common.Hash]struct{}),
+		codeTasks:    make(map[uint64]*byteCodeTasksBundle),
 		healer:       make(map[uint64]*healTask, 0),
 		snapped:      false,
 	}
@@ -272,13 +289,13 @@ func (t *tasks) deleteAccountTask(accountTaskIndex uint64) {
 	}
 }
 
-func (t *tasks) addCodeTask(h common.Hash) {
-	t.codeTasks[h] = struct{}{}
+func (t *tasks) addCodeTask(id uint64, bytecodeTask *byteCodeTasksBundle) {
+	t.codeTasks[id] = bytecodeTask
 }
 
-func (t *tasks) deleteCodeTask(hash common.Hash) {
-	if _, ok := t.codeTasks[hash]; ok {
-		delete(t.codeTasks, hash)
+func (t *tasks) deleteCodeTask(id uint64) {
+	if _, ok := t.codeTasks[id]; ok {
+		delete(t.codeTasks, id)
 	}
 }
 
@@ -500,33 +517,6 @@ func FullAccountRLP(data []byte) ([]byte, error) {
 	return rlp.EncodeToBytes(account)
 }
 
-// onHealState is a callback method to invoke when a flat state(account
-// or storage slot) is downloaded during the healing stage. The flat states
-// can be persisted blindly and can be fixed later in the generation stage.
-// Note it's not concurrent safe, please handle the concurrent issue outside.
-func (s *FullStateDownloadManager) onHealState(paths [][]byte, value []byte) error {
-	if len(paths) == 1 {
-		var account types.StateAccount
-		if err := rlp.DecodeBytes(value, &account); err != nil {
-			return nil // Returning the error here would drop the remote peer
-		}
-		blob := s.SlimAccountRLP(account)
-		rawdb.WriteAccountSnapshot(s.stateWriter, common.BytesToHash(paths[0]), blob)
-		s.accountHealed += 1
-		s.accountHealedBytes += common.StorageSize(1 + common.HashLength + len(blob))
-	}
-	if len(paths) == 2 {
-		rawdb.WriteStorageSnapshot(s.stateWriter, common.BytesToHash(paths[0]), common.BytesToHash(paths[1]), value)
-		s.storageHealed += 1
-		s.storageHealedBytes += common.StorageSize(1 + 2*common.HashLength + len(value))
-	}
-	if s.stateWriter.ValueSize() > ethdb.IdealBatchSize {
-		s.stateWriter.Write() // It's fine to ignore the error here
-		s.stateWriter.Reset()
-	}
-	return nil
-}
-
 func (s *FullStateDownloadManager) commitHealer(force bool) {
 	if !force && s.scheduler.MemSize() < ethdb.IdealBatchSize {
 		return
@@ -572,7 +562,7 @@ func (s *FullStateDownloadManager) SyncCompleted() {
 // getNextBatch returns objects with a maximum of n state download
 // tasks to send to the remote peer.
 func (s *FullStateDownloadManager) GetNextBatch() (accounts []*accountTask,
-	codes []common.Hash,
+	codes []*byteCodeTasksBundle,
 	storages *storageTaskBundle,
 	healtask *healTask,
 	codetask *healTask,
@@ -936,13 +926,13 @@ func (s *FullStateDownloadManager) updateStats(written, duplicate, unexpected in
 // tasks to send to the remote peer.
 func (s *FullStateDownloadManager) getBatchFromUnprocessed(n int, withHealTasks bool) (
 	accounts []*accountTask,
-	codes []common.Hash,
+	codes []*byteCodeTasksBundle,
 	storages *storageTaskBundle,
 	healtask *healTask,
 	codetask *healTask) {
 
 	// over trie nodes as those can be written to disk and forgotten about.
-	codes = make([]common.Hash, 0, n)
+	codes = make([]*byteCodeTasksBundle, 0, n)
 	accounts = make([]*accountTask, 0, n)
 
 	for i, task := range s.tasks.accountTasks {
@@ -961,9 +951,12 @@ func (s *FullStateDownloadManager) getBatchFromUnprocessed(n int, withHealTasks
 		accounts = append(accounts, task)
 		s.requesting.addAccountTask(task.id, task)
 		// s.tasks.deleteAccountTask(task)
+
+		// one task account is enough for an stream
+		return
 	}
 
-	cap := n - len(accounts)
+	cap := n // - len(accounts)
 
 	for _, task := range s.tasks.accountTasks {
 		// Skip tasks that are already retrieving (or done with) all codes
@@ -971,19 +964,42 @@ func (s *FullStateDownloadManager) getBatchFromUnprocessed(n int, withHealTasks
 			continue
 		}
 
+		var hashes []common.Hash
 		for hash := range task.codeTasks {
 			delete(task.codeTasks, hash)
-			codes = append(codes, hash)
-			s.requesting.addCodeTask(hash)
-			s.tasks.deleteCodeTask(hash)
+			hashes = append(hashes, hash)
+		}
+
+		// create a unique id for task bundle
+		var taskID uint64
+		for {
+			taskID = uint64(rand.Int63())
+			if taskID == 0 {
+				continue
+			}
+			if _, ok := s.tasks.codeTasks[taskID]; ok {
+				continue
+			}
+			break
+		}
+
+		bytecodeTask := &byteCodeTasksBundle{
+			id:     taskID,
+			hashes: hashes,
+			task:   task,
+		}
+		codes = append(codes, bytecodeTask)
+
+		s.requesting.addCodeTask(taskID, bytecodeTask)
+		//s.tasks.deleteCodeTask(taskID)
+
 		// Stop when we've gathered enough requests
 		if len(codes) >= cap {
 			return
 		}
 	}
-	}
 
-	cap = n - len(accounts) - len(codes)
+	cap = n - len(codes) // - len(accounts)
 
 	for accTaskID, task := range s.tasks.accountTasks {
 		// Skip tasks that are already retrieving (or done with) all small states
@@ -1118,7 +1134,7 @@ func (s *FullStateDownloadManager) getBatchFromUnprocessed(n int, withHealTasks
 		var (
 			hashes   = make([]common.Hash, 0, cap)
 			paths    = make([]string, 0, cap)
-			pathsets = make([]TrieNodePathSet, 0, cap)
+			pathsets = make([]*message.TrieNodePathSet, 0, cap)
 		)
 		for path, hash := range s.tasks.healer[0].trieTasks {
 			delete(s.tasks.healer[0].trieTasks, path)
@@ -1228,7 +1244,7 @@ func (s *FullStateDownloadManager) getBatchFromUnprocessed(n int, withHealTasks
 
 // sortByAccountPath takes hashes and paths, and sorts them. After that, it generates
 // the TrieNodePaths and merges paths which belongs to the same account path.
-func sortByAccountPath(paths []string, hashes []common.Hash) ([]string, []common.Hash, []trie.SyncPath, []TrieNodePathSet) {
+func sortByAccountPath(paths []string, hashes []common.Hash) ([]string, []common.Hash, []trie.SyncPath, []*message.TrieNodePathSet) {
 	var syncPaths []trie.SyncPath
 	for _, path := range paths {
 		syncPaths = append(syncPaths, trie.NewSyncPath([]byte(path)))
@@ -1242,14 +1258,14 @@ func sortByAccountPath(paths []string, hashes []common.Hash) ([]string, []common
 // getBatchFromRetries get the block number batch to be requested from retries.
 func (s *FullStateDownloadManager) getBatchFromRetries(n int) (
 	accounts []*accountTask,
-	codes []common.Hash,
+	codes []*byteCodeTasksBundle,
 	storages *storageTaskBundle,
 	healtask *healTask,
 	codetask *healTask) {
 
 	// over trie nodes as those can be written to disk and forgotten about.
-	accounts = make([]*accountTask, 0, n)
-	codes = make([]common.Hash, 0, n)
+	accounts = make([]*accountTask, 0)
+	codes = make([]*byteCodeTasksBundle, 0)
 
 	for _, task := range s.retries.accountTasks {
 		// Stop when we've gathered enough requests
@@ -1263,14 +1279,14 @@ func (s *FullStateDownloadManager) getBatchFromRetries(n int) (
 
 	cap := n - len(accounts)
 
-	for code := range s.retries.codeTasks {
+	for _, code := range s.retries.codeTasks {
 		// Stop when we've gathered enough requests
 		if len(codes) >= cap {
 			return
 		}
 		codes = append(codes, code)
-		s.requesting.addCodeTask(code)
-		s.retries.deleteCodeTask(code)
+		s.requesting.addCodeTask(code.id, code)
+		s.retries.deleteCodeTask(code.id)
 	}
 
 	cap = n - len(accounts) - len(codes)
@@ -1339,7 +1355,7 @@ func (s *FullStateDownloadManager) getBatchFromRetries(n int) (
 
 // HandleRequestError handles the error result
 func (s *FullStateDownloadManager) HandleRequestError(accounts []*accountTask,
-	codes []common.Hash,
+	codes []*byteCodeTasksBundle,
 	storages *storageTaskBundle,
 	healtask *healTask,
 	codetask *healTask,
@@ -1354,8 +1370,8 @@ func (s *FullStateDownloadManager) HandleRequestError(accounts []*accountTask,
 	}
 
 	for _, code := range codes {
-		s.requesting.deleteCodeTask(code)
-		s.retries.addCodeTask(code)
+		s.requesting.deleteCodeTask(code.id)
+		s.retries.addCodeTask(code.id, code)
 	}
 
 	if storages != nil {
@@ -1374,18 +1390,99 @@ func (s *FullStateDownloadManager) HandleRequestError(accounts []*accountTask,
 	}
 }
 
+// UnpackAccountRanges retrieves the accounts from the range packet and converts from slim
+// wire representation to consensus format. The returned data is RLP encoded
+// since it's expected to be serialized to disk without further interpretation.
+//
+// Note, this method does a round of RLP decoding and re-encoding, so only use it
+// once and cache the results if need be. Ideally discard the packet afterwards
+// to not double the memory use.
+func (s *FullStateDownloadManager) UnpackAccountRanges(retAccounts []*message.AccountData) ([]common.Hash, [][]byte, error) {
+	var (
+		hashes   = make([]common.Hash, len(retAccounts))
+		accounts = make([][]byte, len(retAccounts))
+	)
+	for i, acc := range retAccounts {
+		val, err := FullAccountRLP(acc.Body)
+		if err != nil {
+			return nil, nil, fmt.Errorf("invalid account %x: %v", acc.Body, err)
+		}
+		hashes[i] = common.BytesToHash(acc.Hash)
+		accounts[i] = val
+	}
+	return hashes, accounts, nil
+}
+
 // HandleAccountRequestResult handles get account ranges result
-func (s *FullStateDownloadManager) HandleAccountRequestResult(task *accountTask, // Task which this request is filling
-	hashes []common.Hash, // Account hashes in the returned range
-	accounts []*types.StateAccount, // Expanded accounts in the returned range
-	cont bool, // Whether the account range has a continuation
+func (s *FullStateDownloadManager) HandleAccountRequestResult(task *accountTask,
+	retAccounts []*message.AccountData,
+	proof [][]byte,
+	origin []byte,
+	last []byte,
 	loopID int,
 	streamID sttypes.StreamID) error {
 
+	hashes, accounts, err := s.UnpackAccountRanges(retAccounts)
+	if err != nil {
+		return err
+	}
+
+	size := common.StorageSize(len(hashes) * common.HashLength)
+	for _, account := range accounts {
+		size += common.StorageSize(len(account))
+	}
+	for _, node := range proof {
+		size += common.StorageSize(len(node))
+	}
+	utils.Logger().Trace().
+		Int("hashes", len(hashes)).
+		Int("accounts", len(accounts)).
+		Int("proofs", len(proof)).
+		Interface("bytes", size).
+		Msg("Delivering range of accounts")
+
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	if err := s.processAccountResponse(task, hashes, accounts, cont); err != nil {
+	// Response is valid, but check if peer is signalling that it does not have
+	// the requested data. For account range queries that means the state being
+	// retrieved was either already pruned remotely, or the peer is not yet
+	// synced to our head.
+	if len(hashes) == 0 && len(accounts) == 0 && len(proof) == 0 {
+		utils.Logger().Debug().
+			Interface("root", s.root).
+			Msg("Peer rejected account range request")
+		s.lock.Unlock()
+		return nil
+	}
+	root := s.root
+	s.lock.Unlock()
+
+	// Reconstruct a partial trie from the response and verify it
+	keys := make([][]byte, len(hashes))
+	for i, key := range hashes {
+		keys[i] = common.CopyBytes(key[:])
+	}
+	nodes := make(ProofList, len(proof))
+	for i, node := range proof {
+		nodes[i] = node
+	}
+	cont, err := trie.VerifyRangeProof(root, origin[:], last[:], keys, accounts, nodes.Set())
+	if err != nil {
+		utils.Logger().Warn().Err(err).Msg("Account range failed proof")
+		// Signal this request as failed, and ready for rescheduling
+		return err
+	}
+	accs := make([]*types.StateAccount, len(accounts))
+	for i, account := range accounts {
+		acc := new(types.StateAccount)
+		if err := rlp.DecodeBytes(account, acc); err != nil {
+			panic(err) // We created these blobs, we must be able to decode them
+		}
+		accs[i] = acc
+	}
+
+	if err := s.processAccountResponse(task, hashes, accs, cont); err != nil {
 		return err
 	}
 
@@ -1491,16 +1588,72 @@ func (s *FullStateDownloadManager) processAccountResponse(task *accountTask, //
 }
 
 // HandleBytecodeRequestResult handles get bytecode result
-func (s *FullStateDownloadManager) HandleBytecodeRequestResult(task *accountTask, // Task which this request is filling
-	hashes []common.Hash, // Hashes of the bytecode to avoid double hashing
+// it is a callback method to invoke when a batch of contract
+// bytes codes are received from a remote peer.
+func (s *FullStateDownloadManager) HandleBytecodeRequestResult(task interface{}, // Task which this request is filling
+	reqHashes []common.Hash, // Hashes of the bytecode to avoid double hashing
 	bytecodes [][]byte, // Actual bytecodes to store into the database (nil = missing)
 	loopID int,
 	streamID sttypes.StreamID) error {
 
+	s.lock.RLock()
+	syncing := !s.snapped
+	s.lock.RUnlock()
+
+	if syncing {
+		return s.onByteCodes(task.(*accountTask), bytecodes, reqHashes)
+	}
+	return s.onHealByteCodes(task.(*healTask), reqHashes, bytecodes)
+}
+
+// onByteCodes is a callback method to invoke when a batch of contract
+// bytes codes are received from a remote peer in the syncing phase.
+func (s *FullStateDownloadManager) onByteCodes(task *accountTask, bytecodes [][]byte, reqHashes []common.Hash) error {
+	var size common.StorageSize
+	for _, code := range bytecodes {
+		size += common.StorageSize(len(code))
+	}
+
+	utils.Logger().Trace().Int("bytecodes", len(bytecodes)).Interface("bytes", size).Msg("Delivering set of bytecodes")
+
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	if err := s.processBytecodeResponse(task, hashes, bytecodes); err != nil {
+	// Response is valid, but check if peer is signalling that it does not have
+	// the requested data. For bytecode range queries that means the peer is not
+	// yet synced.
+	if len(bytecodes) == 0 {
+		utils.Logger().Debug().Msg("Peer rejected bytecode request")
+		return nil
+	}
+
+	// Cross reference the requested bytecodes with the response to find gaps
+	// that the serving node is missing
+	hasher := sha3.NewLegacyKeccak256().(crypto.KeccakState)
+	hash := make([]byte, 32)
+
+	codes := make([][]byte, len(reqHashes))
+	for i, j := 0, 0; i < len(bytecodes); i++ {
+		// Find the next hash that we've been served, leaving misses with nils
+		hasher.Reset()
+		hasher.Write(bytecodes[i])
+		hasher.Read(hash)
+
+		for j < len(reqHashes) && !bytes.Equal(hash, reqHashes[j][:]) {
+			j++
+		}
+		if j < len(reqHashes) {
+			codes[j] = bytecodes[i]
+			j++
+			continue
+		}
+		// We've either ran out of hashes, or got unrequested data
+		utils.Logger().Warn().Int("count", len(bytecodes)-i).Msg("Unexpected bytecodes")
+		// Signal this request as failed, and ready for rescheduling
+		return errors.New("unexpected bytecode")
+	}
+	// Response validated, send it to the scheduler for filling
+	if err := s.processBytecodeResponse(task, reqHashes, codes); err != nil {
 		return err
 	}
 
@@ -1574,21 +1727,143 @@ func estimateRemainingSlots(hashes int, last common.Hash) (uint64, error) {
 	return space.Uint64() - uint64(hashes), nil
 }
 
-// HandleStorageRequestResult handles get storages result
-func (s *FullStateDownloadManager) HandleStorageRequestResult(mainTask *accountTask, // Task which this response belongs to
-	subTask *storageTask, // Task which this response is filling
-	accounts []common.Hash, // Account hashes requested, may be only partially filled
-	roots []common.Hash, // Storage roots requested, may be only partially filled
-	hashes [][]common.Hash, // Storage slot hashes in the returned range
-	storageSlots [][][]byte, // Storage slot values in the returned range
-	cont bool, // Whether the last storage range has a continuation
+// Unpack retrieves the storage slots from the range packet and returns them in
+// a split flat format that's more consistent with the internal data structures.
+func (s *FullStateDownloadManager) UnpackStorages(slots [][]*message.StorageData) ([][]common.Hash, [][][]byte) {
+	var (
+		hashset = make([][]common.Hash, len(slots))
+		slotset = make([][][]byte, len(slots))
+	)
+	for i, slots := range slots {
+		hashset[i] = make([]common.Hash, len(slots))
+		slotset[i] = make([][]byte, len(slots))
+		for j, slot := range slots {
+			hashset[i][j] = common.BytesToHash(slot.Hash)
+			slotset[i][j] = slot.Body
+		}
+	}
+	return hashset, slotset
+}
+
+// HandleStorageRequestResult handles get storages result when ranges of storage slots
+// are received from a remote peer.
+func (s *FullStateDownloadManager) HandleStorageRequestResult(mainTask *accountTask,
+	subTask *storageTask,
+	reqAccounts []common.Hash,
+	roots []common.Hash,
+	origin common.Hash,
+	limit common.Hash,
+	receivedSlots [][]*message.StorageData,
+	proof [][]byte,
 	loopID int,
 	streamID sttypes.StreamID) error {
 
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	if err := s.processStorageResponse(mainTask, subTask, accounts, roots, hashes, storageSlots, cont); err != nil {
+	hashes, slots := s.UnpackStorages(receivedSlots)
+
+	// Gather some trace stats to aid in debugging issues
+	var (
+		hashCount int
+		slotCount int
+		size      common.StorageSize
+	)
+	for _, hashset := range hashes {
+		size += common.StorageSize(common.HashLength * len(hashset))
+		hashCount += len(hashset)
+	}
+	for _, slotset := range slots {
+		for _, slot := range slotset {
+			size += common.StorageSize(len(slot))
+		}
+		slotCount += len(slotset)
+	}
+	for _, node := range proof {
+		size += common.StorageSize(len(node))
+	}
+
+	utils.Logger().Trace().
+		Int("accounts", len(hashes)).
+		Int("hashes", hashCount).
+		Int("slots", slotCount).
+		Int("proofs", len(proof)).
+		Interface("size", size).
+		Msg("Delivering ranges of storage slots")
+
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	// Reject the response if the hash sets and slot sets don't match, or if the
+	// peer sent more data than requested.
+	if len(hashes) != len(slots) {
+		utils.Logger().Warn().
+			Int("hashset", len(hashes)).
+			Int("slotset", len(slots)).
+			Msg("Hash and slot set size mismatch")
+		return errors.New("hash and slot set size mismatch")
+	}
+	if len(hashes) > len(reqAccounts) {
+		utils.Logger().Warn().
+			Int("hashset", len(hashes)).
+			Int("requested", len(reqAccounts)).
+			Msg("Hash set larger than requested")
+		return errors.New("hash set larger than requested")
+	}
+	// Response is valid, but check if peer is signalling that it does not have
+	// the requested data. For storage range queries that means the state being
+	// retrieved was either already pruned remotely, or the peer is not yet
+	// synced to our head.
+	if len(hashes) == 0 && len(proof) == 0 {
+		utils.Logger().Debug().Msg("Peer rejected storage request")
+		return nil
+	}
+
+	// Reconstruct the partial tries from the response and verify them
+	var cont bool
+
+	// If a proof was attached while the response is empty, it indicates that the
+	// requested range specified with 'origin' is empty. Construct an empty state
+	// response locally to finalize the range.
+	if len(hashes) == 0 && len(proof) > 0 {
+		hashes = append(hashes, []common.Hash{})
+		slots = append(slots, [][]byte{})
+	}
+	for i := 0; i < len(hashes); i++ {
+		// Convert the keys and proofs into an internal format
+		keys := make([][]byte, len(hashes[i]))
+		for j, key := range hashes[i] {
+			keys[j] = common.CopyBytes(key[:])
+		}
+		nodes := make(ProofList, 0, len(proof))
+		if i == len(hashes)-1 {
+			for _, node := range proof {
+				nodes = append(nodes, node)
+			}
+		}
+		var err error
+		if len(nodes) == 0 {
+			// No proof has been attached, the response must cover the entire key
+			// space and hash to the origin root.
+			_, err = trie.VerifyRangeProof(roots[i], nil, nil, keys, slots[i], nil)
+			if err != nil {
+				utils.Logger().Warn().Err(err).Msg("Storage slots failed proof")
+				return err
+			}
+		} else {
+			// A proof was attached, the response is only partial, check that the
+			// returned data is indeed part of the storage trie
+			proofdb := nodes.Set()
+
+			cont, err = trie.VerifyRangeProof(roots[i], origin[:], limit[:], keys, slots[i], proofdb)
+			if err != nil {
+				utils.Logger().Warn().Err(err).Msg("Storage range failed proof")
+				return err
+			}
+		}
+	}
+
+	if err := s.processStorageResponse(mainTask, subTask, reqAccounts, roots, hashes, slots, cont); err != nil {
 		return err
 	}
 
@@ -1835,18 +2110,72 @@ func (s *FullStateDownloadManager) processStorageResponse(mainTask *accountTask,
 	return nil
 }
 
-// HandleTrieNodeHealRequestResult handles get trie nodes heal result
+// HandleTrieNodeHealRequestResult handles get trie nodes heal result when a batch of trie nodes
+// are received from a remote peer.
 func (s *FullStateDownloadManager) HandleTrieNodeHealRequestResult(task *healTask, // Task which this request is filling
-	paths []string, // Paths of the trie nodes
-	hashes []common.Hash, // Hashes of the trie nodes to avoid double hashing
-	nodes [][]byte, // Actual trie nodes to store into the database (nil = missing)
+	reqPaths []string,
+	reqHashes []common.Hash,
+	trienodes [][]byte,
 	loopID int,
 	streamID sttypes.StreamID) error {
 
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	if err := s.processTrienodeHealResponse(task, paths, hashes, nodes); err != nil {
+	var size common.StorageSize
+	for _, node := range trienodes {
+		size += common.StorageSize(len(node))
+	}
+
+	utils.Logger().Trace().
+		Int("trienodes", len(trienodes)).
+		Interface("bytes", size).
+		Msg("Delivering set of healing trienodes")
+
+	// Response is valid, but check if peer is signalling that it does not have
+	// the requested data. For bytecode range queries that means the peer is not
+	// yet synced.
+	if len(trienodes) == 0 {
+		utils.Logger().Debug().Msg("Peer rejected trienode heal request")
+		return nil
+	}
+
+	// Cross reference the requested trienodes with the response to find gaps
+	// that the serving node is missing
+	var (
+		hasher = sha3.NewLegacyKeccak256().(crypto.KeccakState)
+		hash   = make([]byte, 32)
+		nodes  = make([][]byte, len(reqHashes))
+		fills  uint64
+	)
+	for i, j := 0, 0; i < len(trienodes); i++ {
+		// Find the next hash that we've been served, leaving misses with nils
+		hasher.Reset()
+		hasher.Write(trienodes[i])
+		hasher.Read(hash)
+
+		for j < len(reqHashes) && !bytes.Equal(hash, reqHashes[j][:]) {
+			j++
+		}
+		if j < len(reqHashes) {
+			nodes[j] = trienodes[i]
+			fills++
+			j++
+			continue
+		}
+		// We've either ran out of hashes, or got unrequested data
+		utils.Logger().Warn().Int("count", len(trienodes)-i).Msg("Unexpected healing trienodes")
+
+		// Signal this request as failed, and ready for rescheduling
+		return errors.New("unexpected healing trienode")
+	}
+	// Response validated, send it to the scheduler for filling
+	s.trienodeHealPend.Add(fills)
+	defer func() {
+		s.trienodeHealPend.Add(^(fills - 1))
+	}()
+
+	if err := s.processTrienodeHealResponse(task, reqPaths, reqHashes, nodes); err != nil {
 		return err
 	}
 
@@ -1959,6 +2288,67 @@ func (s *FullStateDownloadManager) HandleByteCodeHealRequestResult(task *healTas
 	return nil
 }
 
+// onHealByteCodes is a callback method to invoke when a batch of contract
+// bytes codes are received from a remote peer in the healing phase.
+func (s *FullStateDownloadManager) onHealByteCodes(task *healTask,
+	reqHashes []common.Hash,
+	bytecodes [][]byte) error {
+
+	var size common.StorageSize
+	for _, code := range bytecodes {
+		size += common.StorageSize(len(code))
+	}
+
+	utils.Logger().Trace().
+		Int("bytecodes", len(bytecodes)).
+		Interface("bytes", size).
+		Msg("Delivering set of healing bytecodes")
+
+	s.lock.Lock()
+	s.lock.Unlock()
+
+	// Response is valid, but check if peer is signalling that it does not have
+	// the requested data. For bytecode range queries that means the peer is not
+	// yet synced.
+	if len(bytecodes) == 0 {
+		utils.Logger().Debug().Msg("Peer rejected bytecode heal request")
+		return nil
+	}
+
+	// Cross reference the requested bytecodes with the response to find gaps
+	// that the serving node is missing
+	hasher := sha3.NewLegacyKeccak256().(crypto.KeccakState)
+	hash := make([]byte, 32)
+
+	codes := make([][]byte, len(reqHashes))
+	for i, j := 0, 0; i < len(bytecodes); i++ {
+		// Find the next hash that we've been served, leaving misses with nils
+		hasher.Reset()
+		hasher.Write(bytecodes[i])
+		hasher.Read(hash)
+
+		for j < len(reqHashes) && !bytes.Equal(hash, reqHashes[j][:]) {
+			j++
+		}
+		if j < len(reqHashes) {
+			codes[j] = bytecodes[i]
+			j++
+			continue
+		}
+		// We've either ran out of hashes, or got unrequested data
+		utils.Logger().Warn().Int("count", len(bytecodes)-i).Msg("Unexpected healing bytecodes")
+
+		// Signal this request as failed, and ready for rescheduling
+		return errors.New("unexpected healing bytecode")
+	}
+
+	if err := s.processBytecodeHealResponse(task, reqHashes, codes); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // processBytecodeHealResponse integrates an already validated bytecode response
 // into the healer tasks.
 func (s *FullStateDownloadManager) processBytecodeHealResponse(task *healTask, // Task which this request is filling
@@ -1992,3 +2382,30 @@ func (s *FullStateDownloadManager) processBytecodeHealResponse(task *healTask, /
 
 	return nil
 }
+
+// onHealState is a callback method to invoke when a flat state(account
+// or storage slot) is downloaded during the healing stage. The flat states
+// can be persisted blindly and can be fixed later in the generation stage.
+// Note it's not concurrent safe, please handle the concurrent issue outside.
+func (s *FullStateDownloadManager) onHealState(paths [][]byte, value []byte) error {
+	if len(paths) == 1 {
+		var account types.StateAccount
+		if err := rlp.DecodeBytes(value, &account); err != nil {
+			return nil // Returning the error here would drop the remote peer
+		}
+		blob := s.SlimAccountRLP(account)
+		rawdb.WriteAccountSnapshot(s.stateWriter, common.BytesToHash(paths[0]), blob)
+		s.accountHealed += 1
+		s.accountHealedBytes += common.StorageSize(1 + common.HashLength + len(blob))
+	}
+	if len(paths) == 2 {
+		rawdb.WriteStorageSnapshot(s.stateWriter, common.BytesToHash(paths[0]), common.BytesToHash(paths[1]), value)
+		s.storageHealed += 1
+		s.storageHealedBytes += common.StorageSize(1 + 2*common.HashLength + len(value))
+	}
+	if s.stateWriter.ValueSize() > ethdb.IdealBatchSize {
+		s.stateWriter.Write() // It's fine to ignore the error here
+		s.stateWriter.Reset()
+	}
+	return nil
+}

api/service/stagedstreamsync/syncing.go

@@ -367,7 +367,7 @@ func (s *StagedStreamSync) doSync(downloaderContext context.Context, initSync bo
 	}
 
 	// add consensus last mile blocks
-	if s.consensus != nil {
+	if s.consensus != nil && s.isBeaconNode {
 		if hashes, err := s.addConsensusLastMile(s.Blockchain(), s.consensus); err != nil {
 			utils.Logger().Error().Err(err).
 				Msg("[STAGED_STREAM_SYNC] Add consensus last mile failed")

p2p/stream/protocols/sync/chain.go

@@ -199,7 +199,7 @@ func (ch *chainHelperImpl) getReceipts(hs []common.Hash) ([]types.Receipts, erro
 	return receipts, nil
 }
 
-// getAccountRangeRequest
+// getAccountRange 
 func (ch *chainHelperImpl) getAccountRange(root common.Hash, origin common.Hash, limit common.Hash, bytes uint64) ([]*message.AccountData, [][]byte, error) {
 	if bytes > softResponseLimit {
 		bytes = softResponseLimit