refacotr(sync): modify sync-snapshot

include/libs/sync/sync.h

@@ -35,8 +35,10 @@ extern bool gRaftDetailLog;
 #define SYNC_MAX_PROGRESS_WAIT_MS 4000
 #define SYNC_MAX_START_TIME_RANGE_MS (1000 * 20)
 #define SYNC_MAX_RECV_TIME_RANGE_MS 1200
+#define SYNC_DEL_WAL_MS (1000 * 60)
 #define SYNC_ADD_QUORUM_COUNT 3
-#define SYNC_MNODE_MAX_LOG_NUM 10000
+#define SYNC_MNODE_LOG_RETENTION 10000
+#define SYNC_VNODE_LOG_RETENTION 500
 
 #define SYNC_APPEND_ENTRIES_TIMEOUT_MS 10000
 

include/libs/sync/syncTools.h

@@ -459,6 +459,8 @@ typedef struct SyncHeartbeat {
   SyncTerm  term;
   SyncIndex commitIndex;
   SyncTerm  privateTerm;
+  SyncTerm  minMatchIndex;
+
 } SyncHeartbeat;
 
 SyncHeartbeat* syncHeartbeatBuild(int32_t vgId);

source/libs/sync/inc/syncInt.h

@@ -197,6 +197,8 @@ typedef struct SSyncNode {
   bool changing;
 
   int64_t snapshottingIndex;
+  int64_t snapshottingTime;
+  int64_t minMatchIndex;
 
   int64_t startTime;
   int64_t leaderTime;
@@ -245,6 +247,7 @@ void    syncNodeErrorLog(const SSyncNode* pSyncNode, char* str);
 char*     syncNode2SimpleStr(const SSyncNode* pSyncNode);
 bool      syncNodeInConfig(SSyncNode* pSyncNode, const SSyncCfg* config);
 void      syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* newConfig, SyncIndex lastConfigChangeIndex);
+SyncIndex syncMinMatchIndex(SSyncNode* pSyncNode);
 
 SSyncNode* syncNodeAcquire(int64_t rid);
 void       syncNodeRelease(SSyncNode* pNode);

source/libs/sync/src/syncMain.c

@@ -288,6 +288,22 @@ int32_t syncLeaderTransferTo(int64_t rid, SNodeInfo newLeader) {
   return ret;
 }
 
+SyncIndex syncMinMatchIndex(SSyncNode* pSyncNode) {
+  SyncIndex minMatchIndex = SYNC_INDEX_INVALID;
+
+  if (pSyncNode->peersNum > 0) {
+    minMatchIndex = syncIndexMgrGetIndex(pSyncNode->pMatchIndex, &(pSyncNode->peersId[0]));
+  }
+
+  for (int32_t i = 1; i < pSyncNode->peersNum; ++i) {
+    SyncIndex matchIndex = syncIndexMgrGetIndex(pSyncNode->pMatchIndex, &(pSyncNode->peersId[i]));
+    if (matchIndex < minMatchIndex) {
+      minMatchIndex = matchIndex;
+    }
+  }
+  return minMatchIndex;
+}
+
 int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
   SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
   if (pSyncNode == NULL) {
@@ -298,18 +314,33 @@ int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
   int32_t code = 0;
 
   if (syncNodeIsMnode(pSyncNode)) {
+    // mnode
+    int64_t logRetention = SYNC_MNODE_LOG_RETENTION;
+
     SyncIndex beginIndex = pSyncNode->pLogStore->syncLogBeginIndex(pSyncNode->pLogStore);
     SyncIndex endIndex = pSyncNode->pLogStore->syncLogEndIndex(pSyncNode->pLogStore);
     int64_t   logNum = endIndex - beginIndex;
-    if (logNum < SYNC_MNODE_MAX_LOG_NUM) {
+    bool      isEmpty = pSyncNode->pLogStore->syncLogIsEmpty(pSyncNode->pLogStore);
+
+    if (isEmpty || (!isEmpty && logNum < logRetention)) {
       char logBuf[256];
-      snprintf(logBuf, sizeof(logBuf), "mnode log num:%ld, do not delete", logNum);
+      snprintf(logBuf, sizeof(logBuf), "new-snapshot-index:%ld, log-num:%ld, empty:%d, do not delete wal",
+               lastApplyIndex, logNum, isEmpty);
       syncNodeEventLog(pSyncNode, logBuf);
 
       taosReleaseRef(tsNodeRefId, pSyncNode->rid);
       return 0;
     }
-  }
+
+    goto _DEL_WAL;
+
+  } else {
+    // vnode
+    if (pSyncNode->replicaNum > 1) {
+      // multi replicas
+
+      if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
+        pSyncNode->minMatchIndex = syncMinMatchIndex(pSyncNode);
 
         for (int32_t i = 0; i < pSyncNode->peersNum; ++i) {
           int64_t matchIndex = syncIndexMgrGetIndex(pSyncNode->pMatchIndex, &(pSyncNode->peersId[i]));
@@ -320,8 +351,8 @@ int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
               syncUtilU642Addr(pSyncNode->peersId[i].addr, host, sizeof(host), &port);
               char logBuf[256];
               snprintf(logBuf, sizeof(logBuf),
-                 "new-snapshot-index:%ld is greater than match-index:%ld of %s:%d, do not delete wal", lastApplyIndex,
-                 matchIndex, host, port);
+                       "new-snapshot-index:%ld is greater than match-index:%ld of %s:%d, do not delete wal",
+                       lastApplyIndex, matchIndex, host, port);
               syncNodeEventLog(pSyncNode, logBuf);
             } while (0);
 
@@ -330,26 +361,71 @@ int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
           }
         }
 
-  if (pSyncNode->replicaNum == 1) {
-    SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
-    code = walBeginSnapshot(pData->pWal, lastApplyIndex);
+      } else if (pSyncNode->state == TAOS_SYNC_STATE_FOLLOWER) {
+        if (lastApplyIndex > pSyncNode->minMatchIndex) {
+          char logBuf[256];
+          snprintf(logBuf, sizeof(logBuf),
+                   "new-snapshot-index:%ld is greater than min-match-index:%ld, do not delete wal", lastApplyIndex,
+                   pSyncNode->minMatchIndex);
+          syncNodeEventLog(pSyncNode, logBuf);
+
+          taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+          return 0;
+        }
+
+      } else if (pSyncNode->state == TAOS_SYNC_STATE_CANDIDATE) {
+        char logBuf[256];
+        snprintf(logBuf, sizeof(logBuf), "new-snapshot-index:%ld candidate, do not delete wal", lastApplyIndex,
+                 pSyncNode->minMatchIndex);
+        syncNodeEventLog(pSyncNode, logBuf);
+
+        taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+        return 0;
+
+      } else {
+        char logBuf[256];
+        snprintf(logBuf, sizeof(logBuf), "new-snapshot-index:%ld unknown state, do not delete wal", lastApplyIndex,
+                 pSyncNode->minMatchIndex);
+        syncNodeEventLog(pSyncNode, logBuf);
+
+        taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+        return 0;
+      }
+
+      goto _DEL_WAL;
+
     } else {
-    // calculate snapshot index
+      // one replica
 
+      goto _DEL_WAL;
+    }
+  }
+
+_DEL_WAL:
+
+  do {
     SyncIndex snapshottingIndex = atomic_load_64(&pSyncNode->snapshottingIndex);
 
     if (snapshottingIndex == SYNC_INDEX_INVALID) {
       atomic_store_64(&pSyncNode->snapshottingIndex, lastApplyIndex);
+      pSyncNode->snapshottingTime = taosGetTimestampMs();
 
-      do {
+      SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
+      code = walBeginSnapshot(pData->pWal, lastApplyIndex);
+      if (code == 0) {
         char logBuf[256];
         snprintf(logBuf, sizeof(logBuf), "wal snapshot begin, index:%ld, last apply index:%ld",
                  pSyncNode->snapshottingIndex, lastApplyIndex);
         syncNodeEventLog(pSyncNode, logBuf);
-      } while (0);
 
-      SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
-      code = walBeginSnapshot(pData->pWal, lastApplyIndex);
+      } else {
+        char logBuf[256];
+        snprintf(logBuf, sizeof(logBuf), "wal snapshot begin error since:%s, index:%ld, last apply index:%ld",
+                 terrstr(terrno), pSyncNode->snapshottingIndex, lastApplyIndex);
+        syncNodeErrorLog(pSyncNode, logBuf);
+
+        atomic_store_64(&pSyncNode->snapshottingIndex, SYNC_INDEX_INVALID);
+      }
 
     } else {
       char logBuf[256];
@@ -357,7 +433,7 @@ int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
                snapshottingIndex, lastApplyIndex);
       syncNodeEventLog(pSyncNode, logBuf);
     }
-  }
+  } while (0);
 
   taosReleaseRef(tsNodeRefId, pSyncNode->rid);
   return code;
@@ -373,17 +449,23 @@ int32_t syncEndSnapshot(int64_t rid) {
 
   int32_t code = 0;
   if (atomic_load_64(&pSyncNode->snapshottingIndex) != SYNC_INDEX_INVALID) {
+    SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
+    code = walEndSnapshot(pData->pWal);
+    if (code != 0) {
+      sError("vgId:%d, wal end snapshot error since:%s", terrstr(terrno));
+
+      taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+      return -1;
+    } else {
       do {
         char logBuf[256];
         snprintf(logBuf, sizeof(logBuf), "wal snapshot end, index:%ld", atomic_load_64(&pSyncNode->snapshottingIndex));
         syncNodeEventLog(pSyncNode, logBuf);
       } while (0);
 
-    SSyncLogStoreData* pData = pSyncNode->pLogStore->data;
-    code = walEndSnapshot(pData->pWal);
-
       atomic_store_64(&pSyncNode->snapshottingIndex, SYNC_INDEX_INVALID);
     }
+  }
 
   taosReleaseRef(tsNodeRefId, pSyncNode->rid);
   return code;
@@ -1208,6 +1290,9 @@ SSyncNode* syncNodeOpen(const SSyncInfo* pOldSyncInfo) {
   // peer state
   syncNodePeerStateInit(pSyncNode);
 
+  // min match index
+  pSyncNode->minMatchIndex = SYNC_INDEX_INVALID;
+
   // start in syncNodeStart
   // start raft
   // syncNodeBecomeFollower(pSyncNode);
@@ -1745,18 +1830,18 @@ inline void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
     char logBuf[256 + 256];
     if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
       snprintf(logBuf, sizeof(logBuf),
-               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
-               ", snap-tm:%" PRIu64
+               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64
+               ", snap:%" PRId64 ", snap-tm:%" PRIu64
                ", sby:%d, "
                "stgy:%d, bch:%d, "
                "r-num:%d, "
                "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, syncNodeDynamicQuorum(pSyncNode), pSyncNode->electTimerLogicClockUser,
-               pSyncNode->heartbeatTimerLogicClockUser, printStr);
+               pSyncNode->commitIndex, logBeginIndex, logLastIndex, pSyncNode->minMatchIndex, snapshot.lastApplyIndex,
+               snapshot.lastApplyTerm, pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy,
+               pSyncNode->pRaftCfg->batchSize, pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex,
+               pSyncNode->changing, pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode),
+               pSyncNode->electTimerLogicClockUser, pSyncNode->heartbeatTimerLogicClockUser, printStr);
     } else {
       snprintf(logBuf, sizeof(logBuf), "%s", str);
     }
@@ -1769,18 +1854,18 @@ inline void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
     char* s = (char*)taosMemoryMalloc(len);
     if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
       snprintf(s, len,
-               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
-               ", snap-tm:%" PRIu64
+               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64
+               ", snap:%" PRId64 ", snap-tm:%" PRIu64
                ", sby:%d, "
                "stgy:%d, bch:%d, "
                "r-num:%d, "
                "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, syncNodeDynamicQuorum(pSyncNode), pSyncNode->electTimerLogicClockUser,
-               pSyncNode->heartbeatTimerLogicClockUser, printStr);
+               pSyncNode->commitIndex, logBeginIndex, logLastIndex, pSyncNode->minMatchIndex, snapshot.lastApplyIndex,
+               snapshot.lastApplyTerm, pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy,
+               pSyncNode->pRaftCfg->batchSize, pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex,
+               pSyncNode->changing, pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode),
+               pSyncNode->electTimerLogicClockUser, pSyncNode->heartbeatTimerLogicClockUser, printStr);
     } else {
       snprintf(s, len, "%s", str);
     }
@@ -1818,17 +1903,18 @@ inline void syncNodeErrorLog(const SSyncNode* pSyncNode, char* str) {
     char logBuf[256 + 256];
     if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
       snprintf(logBuf, sizeof(logBuf),
-               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
-               ", snap-tm:%" PRIu64
+               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64
+               ", snap:%" PRId64 ", snap-tm:%" PRIu64
                ", 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->commitIndex, logBeginIndex, logLastIndex, pSyncNode->minMatchIndex, snapshot.lastApplyIndex,
+               snapshot.lastApplyTerm, pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy,
+               pSyncNode->pRaftCfg->batchSize, pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex,
+               pSyncNode->changing, pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode),
+               pSyncNode->electTimerLogicClockUser, pSyncNode->heartbeatTimerLogicClockUser, printStr);
     } else {
       snprintf(logBuf, sizeof(logBuf), "%s", str);
     }
@@ -1839,17 +1925,18 @@ inline void syncNodeErrorLog(const SSyncNode* pSyncNode, char* str) {
     char* s = (char*)taosMemoryMalloc(len);
     if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
       snprintf(s, len,
-               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", snap:%" PRId64
-               ", snap-tm:%" PRIu64
+               "vgId:%d, sync %s %s, tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64
+               ", snap:%" PRId64 ", snap-tm:%" PRIu64
                ", 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->commitIndex, logBeginIndex, logLastIndex, pSyncNode->minMatchIndex, snapshot.lastApplyIndex,
+               snapshot.lastApplyTerm, pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy,
+               pSyncNode->pRaftCfg->batchSize, pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex,
+               pSyncNode->changing, pSyncNode->restoreFinish, syncNodeDynamicQuorum(pSyncNode),
+               pSyncNode->electTimerLogicClockUser, pSyncNode->heartbeatTimerLogicClockUser, printStr);
     } else {
       snprintf(s, len, "%s", str);
     }
@@ -2197,6 +2284,9 @@ void syncNodeBecomeFollower(SSyncNode* pSyncNode, const char* debugStr) {
     pSyncNode->pFsm->FpBecomeFollowerCb(pSyncNode->pFsm);
   }
 
+  // min match index
+  pSyncNode->minMatchIndex = SYNC_INDEX_INVALID;
+
   // trace log
   do {
     int32_t debugStrLen = strlen(debugStr);
@@ -2296,6 +2386,9 @@ void syncNodeBecomeLeader(SSyncNode* pSyncNode, const char* debugStr) {
     pSyncNode->pFsm->FpBecomeLeaderCb(pSyncNode->pFsm);
   }
 
+  // min match index
+  pSyncNode->minMatchIndex = SYNC_INDEX_INVALID;
+
   // trace log
   do {
     int32_t debugStrLen = strlen(debugStr);
@@ -2671,6 +2764,10 @@ static void syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId) {
   SSyncNode*        pSyncNode = pData->pSyncNode;
   SSyncTimer*       pSyncTimer = pData->pTimer;
 
+  if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
+    return;
+  }
+
   syncNodeEventLog(pSyncNode, "eq peer hb timer");
 
   int64_t timerLogicClock = atomic_load_64(&pSyncTimer->logicClock);
@@ -2683,6 +2780,7 @@ static void syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId) {
       pSyncMsg->destId = pData->destId;
       pSyncMsg->term = pSyncNode->pRaftStore->currentTerm;
       pSyncMsg->commitIndex = pSyncNode->commitIndex;
+      pSyncMsg->minMatchIndex = syncMinMatchIndex(pSyncNode);
       pSyncMsg->privateTerm = 0;
 
       SRpcMsg rpcMsg;
@@ -2845,6 +2943,7 @@ int32_t syncNodeOnHeartbeat(SSyncNode* ths, SyncHeartbeat* pMsg) {
 
   if (pMsg->term == ths->pRaftStore->currentTerm && ths->state != TAOS_SYNC_STATE_LEADER) {
     syncNodeResetElectTimer(ths);
+    ths->minMatchIndex = pMsg->minMatchIndex;
 
 #if 0
     if (ths->state == TAOS_SYNC_STATE_FOLLOWER) {
@@ -3353,7 +3452,7 @@ const char* syncTimerTypeStr(enum ESyncTimeoutType timerType) {
 void syncLogRecvTimer(SSyncNode* pSyncNode, const SyncTimeout* pMsg, const char* s) {
   char logBuf[256];
   snprintf(logBuf, sizeof(logBuf), "recv sync-timer {type:%s, lc:%lu, ms:%d, data:%p}, %s",
-           syncTimerTypeStr(pMsg->timeoutType), s, pMsg->logicClock, pMsg->timerMS, pMsg->data);
+           syncTimerTypeStr(pMsg->timeoutType), pMsg->logicClock, pMsg->timerMS, pMsg->data, s);
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
@@ -3485,8 +3584,9 @@ void syncLogSendHeartbeat(SSyncNode* pSyncNode, const SyncHeartbeat* pMsg, const
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
   char logBuf[256];
   snprintf(logBuf, sizeof(logBuf),
-           "send sync-heartbeat from %s:%d {term:%" PRIu64 ", cmt:%" PRIu64 ", pterm:%" PRIu64 "}, %s", host, port,
-           pMsg->term, pMsg->commitIndex, pMsg->privateTerm, s);
+           "send sync-heartbeat from %s:%d {term:%" PRIu64 ", cmt:%" PRId64 ", min-match:%" PRId64 ", pterm:%" PRIu64
+           "}, %s",
+           host, port, pMsg->term, pMsg->commitIndex, pMsg->minMatchIndex, pMsg->privateTerm, s);
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
@@ -3496,8 +3596,9 @@ void syncLogRecvHeartbeat(SSyncNode* pSyncNode, const SyncHeartbeat* pMsg, const
   syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
   char logBuf[256];
   snprintf(logBuf, sizeof(logBuf),
-           "recv sync-heartbeat from %s:%d {term:%" PRIu64 ", cmt:%" PRIu64 ", pterm:%" PRIu64 "}, %s", host, port,
-           pMsg->term, pMsg->commitIndex, pMsg->privateTerm, s);
+           "recv sync-heartbeat from %s:%d {term:%" PRIu64 ", cmt:%" PRId64 ", min-match:%" PRId64 ", pterm:%" PRIu64
+           "}, %s",
+           host, port, pMsg->term, pMsg->commitIndex, pMsg->minMatchIndex, pMsg->privateTerm, s);
   syncNodeEventLog(pSyncNode, logBuf);
 }
 

source/libs/sync/src/syncReplication.c

@@ -216,6 +216,7 @@ int32_t syncNodeHeartbeatPeers(SSyncNode* pSyncNode) {
     pSyncMsg->destId = pSyncNode->peersId[i];
     pSyncMsg->term = pSyncNode->pRaftStore->currentTerm;
     pSyncMsg->commitIndex = pSyncNode->commitIndex;
+    pSyncMsg->minMatchIndex = syncMinMatchIndex(pSyncNode);
     pSyncMsg->privateTerm = 0;
 
     SRpcMsg rpcMsg;

source/libs/sync/src/syncTimeout.c

@@ -16,6 +16,7 @@
 #include "syncTimeout.h"
 #include "syncElection.h"
 #include "syncRaftCfg.h"
+#include "syncRaftLog.h"
 #include "syncReplication.h"
 #include "syncRespMgr.h"
 
@@ -63,10 +64,31 @@ int32_t syncNodeTimerRoutine(SSyncNode* ths) {
   // timer replicate
   syncNodeReplicate(ths);
 
+  // clean mnode index
   if (syncNodeIsMnode(ths)) {
     syncNodeCleanConfigIndex(ths);
   }
 
+  // end timeout wal snapshot
+  int64_t timeNow = taosGetTimestampMs();
+  if (timeNow - ths->snapshottingIndex > SYNC_DEL_WAL_MS &&
+      atomic_load_64(&ths->snapshottingIndex) != SYNC_INDEX_INVALID) {
+    SSyncLogStoreData* pData = ths->pLogStore->data;
+    int32_t            code = walEndSnapshot(pData->pWal);
+    if (code != 0) {
+      sError("vgId:%d, wal end snapshot error since:%s", terrstr(terrno));
+      return -1;
+    } else {
+      do {
+        char logBuf[256];
+        snprintf(logBuf, sizeof(logBuf), "wal snapshot end, index:%ld", atomic_load_64(&ths->snapshottingIndex));
+        syncNodeEventLog(ths, logBuf);
+      } while (0);
+
+      atomic_store_64(&ths->snapshottingIndex, SYNC_INDEX_INVALID);
+    }
+  }
+
 #if 0
   if (!syncNodeIsMnode(ths)) {
     syncRespClean(ths->pSyncRespMgr);