Merge pull request #16185 from taosdata/feature/3.0_mhli

refactor(sync): add syncNodeDynamicQuorum

include/libs/sync/sync.h

@@ -26,11 +26,14 @@ extern "C" {
 
 extern bool gRaftDetailLog;
 
-#define SYNC_RESP_TTL_MS       10000000
-#define SYNC_SPEED_UP_HB_TIMER 400
-#define SYNC_SPEED_UP_AFTER_MS (1000 * 20)
-#define SYNC_SLOW_DOWN_RANGE   100
-#define SYNC_MAX_READ_RANGE    10
+#define SYNC_RESP_TTL_MS             10000000
+#define SYNC_SPEED_UP_HB_TIMER       400
+#define SYNC_SPEED_UP_AFTER_MS       (1000 * 20)
+#define SYNC_SLOW_DOWN_RANGE         100
+#define SYNC_MAX_READ_RANGE          2
+#define SYNC_MAX_PROGRESS_WAIT_MS    4000
+#define SYNC_MAX_START_TIME_RANGE_MS (1000 * 20)
+#define SYNC_MAX_RECV_TIME_RANGE_MS  1000
 
 #define SYNC_MAX_BATCH_SIZE 1
 #define SYNC_INDEX_BEGIN    0

include/libs/sync/syncTools.h

@@ -423,6 +423,7 @@ typedef struct SyncAppendEntriesReply {
   SyncTerm  privateTerm;
   bool      success;
   SyncIndex matchIndex;
+  int64_t   startTime;
 } SyncAppendEntriesReply;
 
 SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId);

source/libs/sync/inc/syncIndexMgr.h

@@ -29,8 +29,12 @@ extern "C" {
 // SIndexMgr -----------------------------
 typedef struct SSyncIndexMgr {
   SRaftId (*replicas)[TSDB_MAX_REPLICA];
-  SyncIndex  index[TSDB_MAX_REPLICA];
-  SyncTerm   privateTerm[TSDB_MAX_REPLICA];  // for advanced function
+  SyncIndex index[TSDB_MAX_REPLICA];
+  SyncTerm  privateTerm[TSDB_MAX_REPLICA];  // for advanced function
+
+  int64_t startTimeArr[TSDB_MAX_REPLICA];
+  int64_t recvTimeArr[TSDB_MAX_REPLICA];
+
   int32_t    replicaNum;
   SSyncNode *pSyncNode;
 } SSyncIndexMgr;
@@ -41,8 +45,13 @@ void           syncIndexMgrDestroy(SSyncIndexMgr *pSyncIndexMgr);
 void           syncIndexMgrClear(SSyncIndexMgr *pSyncIndexMgr);
 void           syncIndexMgrSetIndex(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, SyncIndex index);
 SyncIndex      syncIndexMgrGetIndex(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId);
-cJSON *        syncIndexMgr2Json(SSyncIndexMgr *pSyncIndexMgr);
-char *         syncIndexMgr2Str(SSyncIndexMgr *pSyncIndexMgr);
+cJSON         *syncIndexMgr2Json(SSyncIndexMgr *pSyncIndexMgr);
+char          *syncIndexMgr2Str(SSyncIndexMgr *pSyncIndexMgr);
+
+void    syncIndexMgrSetStartTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, int64_t startTime);
+int64_t syncIndexMgrGetStartTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId);
+void    syncIndexMgrSetRecvTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, int64_t recvTime);
+int64_t syncIndexMgrGetRecvTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId);
 
 // void     syncIndexMgrSetTerm(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, SyncTerm term);
 // SyncTerm syncIndexMgrGetTerm(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId);

source/libs/sync/inc/syncInt.h

@@ -269,6 +269,8 @@ int32_t syncNodeLeaderTransfer(SSyncNode* pSyncNode);
 int32_t syncNodeLeaderTransferTo(SSyncNode* pSyncNode, SNodeInfo newLeader);
 int32_t syncDoLeaderTransfer(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* pEntry);
 
+int32_t syncNodeDynamicQuorum(const SSyncNode* pSyncNode);
+
 // trace log
 void syncLogSendRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s);
 void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s);

source/libs/sync/inc/syncReplication.h

@@ -55,6 +55,8 @@ int32_t syncNodeAppendEntriesPeers(SSyncNode* pSyncNode);
 int32_t syncNodeAppendEntriesPeersSnapshot(SSyncNode* pSyncNode);
 int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode);
 
+int32_t syncNodeAppendEntriesOnePeer(SSyncNode* pSyncNode, SRaftId* pDestId, SyncIndex nextIndex);
+
 int32_t syncNodeReplicate(SSyncNode* pSyncNode, bool isTimer);
 int32_t syncNodeAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncAppendEntries* pMsg);
 int32_t syncNodeAppendEntriesBatch(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncAppendEntriesBatch* pMsg);

source/libs/sync/src/syncAppendEntries.c

@@ -148,6 +148,7 @@ int32_t syncNodeOnAppendEntriesCb(SSyncNode* ths, SyncAppendEntries* pMsg) {
     pReply->term = ths->pRaftStore->currentTerm;
     pReply->success = false;
     pReply->matchIndex = SYNC_INDEX_INVALID;
+    pReply->startTime = ths->startTime;
 
     // msg event log
     syncLogSendAppendEntriesReply(ths, pReply, "");
@@ -290,6 +291,8 @@ int32_t syncNodeOnAppendEntriesCb(SSyncNode* ths, SyncAppendEntries* pMsg) {
       pReply->matchIndex = pMsg->prevLogIndex;
     }
 
+    pReply->startTime = ths->startTime;
+
     // msg event log
     syncLogSendAppendEntriesReply(ths, pReply, "");
 
@@ -603,6 +606,7 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
       pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
       pReply->success = true;
       pReply->matchIndex = matchIndex;
+      pReply->startTime = ths->startTime;
 
       // msg event log
       syncLogSendAppendEntriesReply(ths, pReply, "");
@@ -651,6 +655,7 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
       pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
       pReply->success = false;
       pReply->matchIndex = ths->commitIndex;
+      pReply->startTime = ths->startTime;
 
       // msg event log
       syncLogSendAppendEntriesReply(ths, pReply, "");
@@ -729,6 +734,7 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
       pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
       pReply->success = true;
       pReply->matchIndex = hasAppendEntries ? pMsg->prevLogIndex + pMsg->dataCount : pMsg->prevLogIndex;
+      pReply->startTime = ths->startTime;
 
       // msg event log
       syncLogSendAppendEntriesReply(ths, pReply, "");
@@ -874,6 +880,7 @@ int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMs
       pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
       pReply->success = true;
       pReply->matchIndex = matchIndex;
+      pReply->startTime = ths->startTime;
 
       // msg event log
       syncLogSendAppendEntriesReply(ths, pReply, "");
@@ -919,6 +926,7 @@ int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMs
       pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
       pReply->success = false;
       pReply->matchIndex = SYNC_INDEX_INVALID;
+      pReply->startTime = ths->startTime;
 
       // msg event log
       syncLogSendAppendEntriesReply(ths, pReply, "");
@@ -984,6 +992,7 @@ int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMs
       pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
       pReply->success = true;
       pReply->matchIndex = hasAppendEntries ? pMsg->prevLogIndex + 1 : pMsg->prevLogIndex;
+      pReply->startTime = ths->startTime;
 
       // msg event log
       syncLogSendAppendEntriesReply(ths, pReply, "");

source/libs/sync/src/syncAppendEntriesReply.c

@@ -64,6 +64,10 @@ int32_t syncNodeOnAppendEntriesReplyCb(SSyncNode* ths, SyncAppendEntriesReply* p
 
   ASSERT(pMsg->term == ths->pRaftStore->currentTerm);
 
+  // update time
+  syncIndexMgrSetStartTime(ths->pNextIndex, &(pMsg->srcId), pMsg->startTime);
+  syncIndexMgrSetRecvTime(ths->pNextIndex, &(pMsg->srcId), taosGetTimestampMs());
+
   SyncIndex beforeNextIndex = syncIndexMgrGetIndex(ths->pNextIndex, &(pMsg->srcId));
   SyncIndex beforeMatchIndex = syncIndexMgrGetIndex(ths->pMatchIndex, &(pMsg->srcId));
 
@@ -170,6 +174,10 @@ int32_t syncNodeOnAppendEntriesReplySnapshot2Cb(SSyncNode* ths, SyncAppendEntrie
 
   ASSERT(pMsg->term == ths->pRaftStore->currentTerm);
 
+  // update time
+  syncIndexMgrSetStartTime(ths->pNextIndex, &(pMsg->srcId), pMsg->startTime);
+  syncIndexMgrSetRecvTime(ths->pNextIndex, &(pMsg->srcId), taosGetTimestampMs());
+
   SyncIndex beforeNextIndex = syncIndexMgrGetIndex(ths->pNextIndex, &(pMsg->srcId));
   SyncIndex beforeMatchIndex = syncIndexMgrGetIndex(ths->pMatchIndex, &(pMsg->srcId));
 
@@ -330,6 +338,10 @@ int32_t syncNodeOnAppendEntriesReplySnapshotCb(SSyncNode* ths, SyncAppendEntries
 
   ASSERT(pMsg->term == ths->pRaftStore->currentTerm);
 
+  // update time
+  syncIndexMgrSetStartTime(ths->pNextIndex, &(pMsg->srcId), pMsg->startTime);
+  syncIndexMgrSetRecvTime(ths->pNextIndex, &(pMsg->srcId), taosGetTimestampMs());
+
   SyncIndex beforeNextIndex = syncIndexMgrGetIndex(ths->pNextIndex, &(pMsg->srcId));
   SyncIndex beforeMatchIndex = syncIndexMgrGetIndex(ths->pMatchIndex, &(pMsg->srcId));
 

source/libs/sync/src/syncCommit.c

@@ -133,6 +133,63 @@ bool syncAgreeIndex(SSyncNode* pSyncNode, SRaftId* pRaftId, SyncIndex index) {
   return false;
 }
 
+static inline int64_t syncNodeAbs64(int64_t a, int64_t b) {
+  ASSERT(a >= 0);
+  ASSERT(b >= 0);
+
+  int64_t c = a > b ? a - b : b - a;
+  return c;
+}
+
+int32_t syncNodeDynamicQuorum(const SSyncNode* pSyncNode) {
+  int32_t quorum = 1;  // self
+
+  int64_t timeNow = taosGetTimestampMs();
+  for (int i = 0; i < pSyncNode->peersNum; ++i) {
+    int64_t peerStartTime = syncIndexMgrGetStartTime(pSyncNode->pNextIndex, &(pSyncNode->peersId)[i]);
+    int64_t peerRecvTime = syncIndexMgrGetRecvTime(pSyncNode->pNextIndex, &(pSyncNode->peersId)[i]);
+
+    int64_t recvTimeDiff = syncNodeAbs64(peerRecvTime, timeNow);
+    int64_t startTimeDiff = syncNodeAbs64(peerStartTime, pSyncNode->startTime);
+
+    int32_t addQuorum = 0;
+
+    if (recvTimeDiff < SYNC_MAX_RECV_TIME_RANGE_MS) {
+      addQuorum = 1;
+    } else {
+      addQuorum = 0;
+    }
+
+    if (startTimeDiff > SYNC_MAX_START_TIME_RANGE_MS) {
+      addQuorum = 0;
+    }
+
+    quorum += addQuorum;
+  }
+
+  ASSERT(quorum <= pSyncNode->replicaNum);
+
+  if (quorum < pSyncNode->quorum) {
+    quorum = pSyncNode->quorum;
+  }
+
+  return quorum;
+}
+
+bool syncAgree(SSyncNode* pSyncNode, SyncIndex index) {
+  int agreeCount = 0;
+  for (int i = 0; i < pSyncNode->replicaNum; ++i) {
+    if (syncAgreeIndex(pSyncNode, &(pSyncNode->replicasId[i]), index)) {
+      ++agreeCount;
+    }
+    if (agreeCount >= syncNodeDynamicQuorum(pSyncNode)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+/*
 bool syncAgree(SSyncNode* pSyncNode, SyncIndex index) {
   int agreeCount = 0;
   for (int i = 0; i < pSyncNode->replicaNum; ++i) {
@@ -145,3 +202,4 @@ bool syncAgree(SSyncNode* pSyncNode, SyncIndex index) {
   }
   return false;
 }
+*/

source/libs/sync/src/syncIndexMgr.c

@@ -47,6 +47,13 @@ void syncIndexMgrDestroy(SSyncIndexMgr *pSyncIndexMgr) {
 void syncIndexMgrClear(SSyncIndexMgr *pSyncIndexMgr) {
   memset(pSyncIndexMgr->index, 0, sizeof(pSyncIndexMgr->index));
   memset(pSyncIndexMgr->privateTerm, 0, sizeof(pSyncIndexMgr->privateTerm));
+
+  // int64_t timeNow = taosGetMonotonicMs();
+  for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
+    pSyncIndexMgr->startTimeArr[i] = 0;
+    pSyncIndexMgr->recvTimeArr[i] = 0;
+  }
+
   /*
   for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
     pSyncIndexMgr->index[i] = 0;
@@ -68,7 +75,8 @@ void syncIndexMgrSetIndex(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId,
   char     host[128];
   uint16_t port;
   syncUtilU642Addr(pRaftId->addr, host, sizeof(host), &port);
-  sError("vgId:%d, index mgr set for %s:%d, index:%" PRId64 " error", pSyncIndexMgr->pSyncNode->vgId, host, port, index);
+  sError("vgId:%d, index mgr set for %s:%d, index:%" PRId64 " error", pSyncIndexMgr->pSyncNode->vgId, host, port,
+         index);
 }
 
 SyncIndex syncIndexMgrGetIndex(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId) {
@@ -125,11 +133,65 @@ cJSON *syncIndexMgr2Json(SSyncIndexMgr *pSyncIndexMgr) {
 
 char *syncIndexMgr2Str(SSyncIndexMgr *pSyncIndexMgr) {
   cJSON *pJson = syncIndexMgr2Json(pSyncIndexMgr);
-  char * serialized = cJSON_Print(pJson);
+  char  *serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
 
+void syncIndexMgrSetStartTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, int64_t startTime) {
+  for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
+    if (syncUtilSameId(&((*(pSyncIndexMgr->replicas))[i]), pRaftId)) {
+      (pSyncIndexMgr->startTimeArr)[i] = startTime;
+      return;
+    }
+  }
+
+  // maybe config change
+  // ASSERT(0);
+  char     host[128];
+  uint16_t port;
+  syncUtilU642Addr(pRaftId->addr, host, sizeof(host), &port);
+  sError("vgId:%d, index mgr set for %s:%d, start-time:%" PRId64 " error", pSyncIndexMgr->pSyncNode->vgId, host, port,
+         startTime);
+}
+
+int64_t syncIndexMgrGetStartTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId) {
+  for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
+    if (syncUtilSameId(&((*(pSyncIndexMgr->replicas))[i]), pRaftId)) {
+      int64_t startTime = (pSyncIndexMgr->startTimeArr)[i];
+      return startTime;
+    }
+  }
+  ASSERT(0);
+}
+
+void syncIndexMgrSetRecvTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, int64_t recvTime) {
+  for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
+    if (syncUtilSameId(&((*(pSyncIndexMgr->replicas))[i]), pRaftId)) {
+      (pSyncIndexMgr->recvTimeArr)[i] = recvTime;
+      return;
+    }
+  }
+
+  // maybe config change
+  // ASSERT(0);
+  char     host[128];
+  uint16_t port;
+  syncUtilU642Addr(pRaftId->addr, host, sizeof(host), &port);
+  sError("vgId:%d, index mgr set for %s:%d, recv-time:%" PRId64 " error", pSyncIndexMgr->pSyncNode->vgId, host, port,
+         recvTime);
+}
+
+int64_t syncIndexMgrGetRecvTime(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId) {
+  for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
+    if (syncUtilSameId(&((*(pSyncIndexMgr->replicas))[i]), pRaftId)) {
+      int64_t recvTime = (pSyncIndexMgr->recvTimeArr)[i];
+      return recvTime;
+    }
+  }
+  ASSERT(0);
+}
+
 // for debug -------------------
 void syncIndexMgrPrint(SSyncIndexMgr *pObj) {
   char *serialized = syncIndexMgr2Str(pObj);

source/libs/sync/src/syncMain.c

@@ -1682,13 +1682,13 @@ inline void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
                ", sby:%d, "
                "stgy:%d, bch:%d, "
                "r-num:%d, "
-               "lcfg:%" PRId64 ", chging:%d, rsto:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s",
+               "lcfg:%" PRId64 ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s",
                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
                pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
                pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
                pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
-               pSyncNode->restoreFinish, pSyncNode->electTimerLogicClockUser, pSyncNode->heartbeatTimerLogicClockUser,
-               printStr);
+               pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode), pSyncNode->electTimerLogicClockUser,
+               pSyncNode->heartbeatTimerLogicClockUser, printStr);
     } else {
       snprintf(logBuf, sizeof(logBuf), "%s", str);
     }
@@ -1706,12 +1706,13 @@ inline void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
                ", sby:%d, "
                "stgy:%d, bch:%d, "
                "r-num:%d, "
-               "lcfg:%" PRId64 ", chging:%d, rsto:%d, %s",
+               "lcfg:%" PRId64 ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s",
                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
                pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
                pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
                pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
-               pSyncNode->restoreFinish, printStr);
+               pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode), pSyncNode->electTimerLogicClockUser,
+               pSyncNode->heartbeatTimerLogicClockUser, printStr);
     } else {
       snprintf(s, len, "%s", str);
     }

source/libs/sync/src/syncMessage.c

@@ -1947,6 +1947,8 @@ cJSON* syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg) {
     cJSON_AddNumberToObject(pRoot, "success", pMsg->success);
     snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->matchIndex);
     cJSON_AddStringToObject(pRoot, "matchIndex", u64buf);
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->startTime);
+    cJSON_AddStringToObject(pRoot, "startTime", u64buf);
   }
 
   cJSON* pJson = cJSON_CreateObject();

source/libs/sync/src/syncReplication.c

@@ -116,6 +116,120 @@ int32_t syncNodeAppendEntriesPeers(SSyncNode* pSyncNode) {
   return ret;
 }
 
+int32_t syncNodeAppendEntriesOnePeer(SSyncNode* pSyncNode, SRaftId* pDestId, SyncIndex nextIndex) {
+  int32_t ret = 0;
+
+  // pre index, pre term
+  SyncIndex preLogIndex = syncNodeGetPreIndex(pSyncNode, nextIndex);
+  SyncTerm  preLogTerm = syncNodeGetPreTerm(pSyncNode, nextIndex);
+  if (preLogTerm == SYNC_TERM_INVALID) {
+    SyncIndex newNextIndex = syncNodeGetLastIndex(pSyncNode) + 1;
+    // SyncIndex newNextIndex = nextIndex + 1;
+
+    syncIndexMgrSetIndex(pSyncNode->pNextIndex, pDestId, newNextIndex);
+    syncIndexMgrSetIndex(pSyncNode->pMatchIndex, pDestId, SYNC_INDEX_INVALID);
+    sError("vgId:%d, sync get pre term error, nextIndex:%" PRId64 ", update next-index:%" PRId64
+           ", match-index:%d, raftid:%" PRId64,
+           pSyncNode->vgId, nextIndex, newNextIndex, SYNC_INDEX_INVALID, pDestId->addr);
+    return -1;
+  }
+
+  // entry pointer array
+  SSyncRaftEntry* entryPArr[SYNC_MAX_BATCH_SIZE];
+  memset(entryPArr, 0, sizeof(entryPArr));
+
+  // get entry batch
+  int32_t   getCount = 0;
+  SyncIndex getEntryIndex = nextIndex;
+  for (int32_t i = 0; i < pSyncNode->pRaftCfg->batchSize; ++i) {
+    SSyncRaftEntry* pEntry = NULL;
+    int32_t         code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, getEntryIndex, &pEntry);
+    if (code == 0) {
+      ASSERT(pEntry != NULL);
+      entryPArr[i] = pEntry;
+      getCount++;
+      getEntryIndex++;
+
+    } else {
+      break;
+    }
+  }
+
+  // event log
+  do {
+    char     logBuf[128];
+    char     host[64];
+    uint16_t port;
+    syncUtilU642Addr(pDestId->addr, host, sizeof(host), &port);
+    snprintf(logBuf, sizeof(logBuf), "build batch:%d for %s:%d", getCount, host, port);
+    syncNodeEventLog(pSyncNode, logBuf);
+  } while (0);
+
+  // build msg
+  SyncAppendEntriesBatch* pMsg = syncAppendEntriesBatchBuild(entryPArr, getCount, pSyncNode->vgId);
+  ASSERT(pMsg != NULL);
+
+  // free entries
+  for (int32_t i = 0; i < pSyncNode->pRaftCfg->batchSize; ++i) {
+    SSyncRaftEntry* pEntry = entryPArr[i];
+    if (pEntry != NULL) {
+      syncEntryDestory(pEntry);
+      entryPArr[i] = NULL;
+    }
+  }
+
+  // prepare msg
+  pMsg->srcId = pSyncNode->myRaftId;
+  pMsg->destId = *pDestId;
+  pMsg->term = pSyncNode->pRaftStore->currentTerm;
+  pMsg->prevLogIndex = preLogIndex;
+  pMsg->prevLogTerm = preLogTerm;
+  pMsg->commitIndex = pSyncNode->commitIndex;
+  pMsg->privateTerm = 0;
+  pMsg->dataCount = getCount;
+
+  // send msg
+  syncNodeAppendEntriesBatch(pSyncNode, pDestId, pMsg);
+
+  // speed up
+  if (pMsg->dataCount > 0 && pSyncNode->commitIndex - pMsg->prevLogIndex > SYNC_SLOW_DOWN_RANGE) {
+    ret = 1;
+
+#if 0
+      do {
+        char     logBuf[128];
+        char     host[64];
+        uint16_t port;
+        syncUtilU642Addr(pDestId->addr, host, sizeof(host), &port);
+        snprintf(logBuf, sizeof(logBuf), "maybe speed up for %s:%d, pre-index:%ld", host, port, pMsg->prevLogIndex);
+        syncNodeEventLog(pSyncNode, logBuf);
+      } while (0);
+#endif
+  }
+
+  syncAppendEntriesBatchDestroy(pMsg);
+
+  return ret;
+}
+
+int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode) {
+  if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
+    return -1;
+  }
+
+  int32_t ret = 0;
+  for (int i = 0; i < pSyncNode->peersNum; ++i) {
+    SRaftId* pDestId = &(pSyncNode->peersId[i]);
+
+    // next index
+    SyncIndex nextIndex = syncIndexMgrGetIndex(pSyncNode->pNextIndex, pDestId);
+    ret = syncNodeAppendEntriesOnePeer(pSyncNode, pDestId, nextIndex);
+  }
+
+  return ret;
+}
+
+#if 0
 int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode) {
   if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
     return -1;
@@ -221,6 +335,7 @@ int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode) {
 
   return ret;
 }
+#endif
 
 int32_t syncNodeAppendEntriesPeersSnapshot(SSyncNode* pSyncNode) {
   ASSERT(pSyncNode->state == TAOS_SYNC_STATE_LEADER);

source/libs/sync/test/syncAppendEntriesReplyTest.cpp

@@ -24,6 +24,7 @@ SyncAppendEntriesReply *createMsg() {
   pMsg->matchIndex = 77;
   pMsg->term = 33;
   pMsg->privateTerm = 44;
+  pMsg->startTime = taosGetTimestampMs();
   return pMsg;
 }
 
@@ -89,6 +90,8 @@ void test5() {
 }
 
 int main() {
+  gRaftDetailLog = true;
+
   tsAsyncLog = 0;
   sDebugFlag = DEBUG_TRACE + DEBUG_SCREEN + DEBUG_FILE;
   logTest();