Merge pull request #18940 from taosdata/enh/TD-21127

refact: post sem in vnode while sync timeout

include/libs/sync/sync.h

@@ -230,7 +230,7 @@ int64_t syncOpen(SSyncInfo* pSyncInfo);
 int32_t syncStart(int64_t rid);
 void    syncStop(int64_t rid);
 void    syncPreStop(int64_t rid);
-int32_t syncPropose(int64_t rid, SRpcMsg* pMsg, bool isWeak);
+int32_t syncPropose(int64_t rid, SRpcMsg* pMsg, bool isWeak, int64_t* seq);
 int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg);
 int32_t syncReconfig(int64_t rid, SSyncCfg* pCfg);
 int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex);
@@ -240,6 +240,7 @@ int32_t syncStepDown(int64_t rid, SyncTerm newTerm);
 bool    syncIsReadyForRead(int64_t rid);
 bool    syncSnapshotSending(int64_t rid);
 bool    syncSnapshotRecving(int64_t rid);
+int32_t syncSendTimeoutRsp(int64_t rid, int64_t seq);
 
 SSyncState  syncGetState(int64_t rid);
 void        syncGetRetryEpSet(int64_t rid, SEpSet* pEpSet);

include/util/tdef.h

@@ -497,6 +497,9 @@ enum {
 // sort page size by default
 #define DEFAULT_PAGESIZE 4096
 
+#define VNODE_TIMEOUT_SEC 60
+#define MNODE_TIMEOUT_SEC 10
+
 #ifdef __cplusplus
 }
 #endif

source/dnode/mgmt/mgmt_vnode/inc/vmInt.h

@@ -38,6 +38,8 @@ typedef struct SVnodeMgmt {
   TdThreadRwlock lock;
   SVnodesStat    state;
   STfs          *pTfs;
+  TdThread       thread;
+  bool           stop;
 } SVnodeMgmt;
 
 typedef struct {

source/dnode/mgmt/mgmt_vnode/src/vmInt.c

@@ -334,6 +334,62 @@ static void vmCleanup(SVnodeMgmt *pMgmt) {
   taosMemoryFree(pMgmt);
 }
 
+static void vmCheckSyncTimeout(SVnodeMgmt *pMgmt) {
+  int32_t     numOfVnodes = 0;
+  SVnodeObj **ppVnodes = vmGetVnodeListFromHash(pMgmt, &numOfVnodes);
+
+  for (int32_t i = 0; i < numOfVnodes; ++i) {
+    SVnodeObj *pVnode = ppVnodes[i];
+    vnodeSyncCheckTimeout(pVnode->pImpl);
+    vmReleaseVnode(pMgmt, pVnode);
+  }
+
+  if (ppVnodes != NULL) {
+    taosMemoryFree(ppVnodes);
+  }
+}
+
+static void *vmThreadFp(void *param) {
+  SVnodeMgmt *pMgmt = param;
+  int64_t     lastTime = 0;
+  setThreadName("vnode-timer");
+
+  while (1) {
+    lastTime++;
+    taosMsleep(100);
+    if (pMgmt->stop) break;
+    if (lastTime % 10 != 0) continue;
+
+    int64_t sec = lastTime / 10;
+    if (sec % (VNODE_TIMEOUT_SEC / 2) == 0) {
+      vmCheckSyncTimeout(pMgmt);
+    }
+  }
+
+  return NULL;
+}
+
+static int32_t vmInitTimer(SVnodeMgmt *pMgmt) {
+  TdThreadAttr thAttr;
+  taosThreadAttrInit(&thAttr);
+  taosThreadAttrSetDetachState(&thAttr, PTHREAD_CREATE_JOINABLE);
+  if (taosThreadCreate(&pMgmt->thread, &thAttr, vmThreadFp, pMgmt) != 0) {
+    dError("failed to create vnode timer thread since %s", strerror(errno));
+    return -1;
+  }
+
+  taosThreadAttrDestroy(&thAttr);
+  return 0;
+}
+
+static void vmCleanupTimer(SVnodeMgmt *pMgmt) {
+  pMgmt->stop = true;
+  if (taosCheckPthreadValid(pMgmt->thread)) {
+    taosThreadJoin(pMgmt->thread, NULL);
+    taosThreadClear(&pMgmt->thread);
+  }
+}
+
 static int32_t vmInit(SMgmtInputOpt *pInput, SMgmtOutputOpt *pOutput) {
   int32_t code = -1;
 
@@ -510,12 +566,10 @@ static int32_t vmStartVnodes(SVnodeMgmt *pMgmt) {
     taosMemoryFree(ppVnodes);
   }
 
-  return 0;
+  return vmInitTimer(pMgmt);
 }
 
-static void vmStop(SVnodeMgmt *pMgmt) {
-  // process inside the vnode
-}
+static void vmStop(SVnodeMgmt *pMgmt) { vmCleanupTimer(pMgmt); }
 
 SMgmtFunc vmGetMgmtFunc() {
   SMgmtFunc mgmtFunc = {0};

source/dnode/mnode/impl/inc/mndInt.h

@@ -89,6 +89,7 @@ typedef struct {
   int32_t       errCode;
   int32_t       transId;
   int32_t       transSec;
+  int64_t       transSeq;
   TdThreadMutex lock;
   int8_t        selfIndex;
   int8_t        numOfReplicas;

source/dnode/mnode/impl/src/mndMain.c

@@ -101,6 +101,7 @@ static void *mndBuildCheckpointTickMsg(int32_t *pContLen, int64_t sec) {
 }
 
 static void mndPullupTrans(SMnode *pMnode) {
+  mTrace("pullup trans msg");
   int32_t contLen = 0;
   void   *pReq = mndBuildTimerMsg(&contLen);
   if (pReq != NULL) {
@@ -110,6 +111,7 @@ static void mndPullupTrans(SMnode *pMnode) {
 }
 
 static void mndPullupTtl(SMnode *pMnode) {
+  mTrace("pullup ttl");
   int32_t contLen = 0;
   void   *pReq = mndBuildTimerMsg(&contLen);
   SRpcMsg rpcMsg = {.msgType = TDMT_MND_TTL_TIMER, .pCont = pReq, .contLen = contLen};
@@ -117,6 +119,7 @@ static void mndPullupTtl(SMnode *pMnode) {
 }
 
 static void mndCalMqRebalance(SMnode *pMnode) {
+  mTrace("calc mq rebalance");
   int32_t contLen = 0;
   void   *pReq = mndBuildTimerMsg(&contLen);
   if (pReq != NULL) {
@@ -143,6 +146,7 @@ static void mndStreamCheckpointTick(SMnode *pMnode, int64_t sec) {
 }
 
 static void mndPullupTelem(SMnode *pMnode) {
+  mTrace("pullup telem msg");
   int32_t contLen = 0;
   void   *pReq = mndBuildTimerMsg(&contLen);
   if (pReq != NULL) {
@@ -152,6 +156,7 @@ static void mndPullupTelem(SMnode *pMnode) {
 }
 
 static void mndPullupGrant(SMnode *pMnode) {
+  mTrace("pullup grant msg");
   int32_t contLen = 0;
   void   *pReq = mndBuildTimerMsg(&contLen);
   if (pReq != NULL) {
@@ -162,6 +167,7 @@ static void mndPullupGrant(SMnode *pMnode) {
 }
 
 static void mndIncreaseUpTime(SMnode *pMnode) {
+  mTrace("increate uptime");
   int32_t contLen = 0;
   void   *pReq = mndBuildTimerMsg(&contLen);
   if (pReq != NULL) {
@@ -213,6 +219,7 @@ static void mndSetVgroupOffline(SMnode *pMnode, int32_t dnodeId, int64_t curMs)
 }
 
 static void mndCheckDnodeOffline(SMnode *pMnode) {
+  mTrace("check dnode offline");
   if (mndAcquireRpc(pMnode) != 0) return;
 
   SSdb   *pSdb = pMnode->pSdb;
@@ -280,6 +287,9 @@ static void *mndThreadFp(void *param) {
 
     if (sec % (tsStatusInterval * 5) == 0) {
       mndCheckDnodeOffline(pMnode);
+    }
+
+    if (sec % (MNODE_TIMEOUT_SEC / 2) == 0) {
       mndSyncCheckTimeout(pMnode);
     }
   }

source/dnode/mnode/impl/src/mndSync.c

@@ -17,8 +17,6 @@
 #include "mndSync.h"
 #include "mndTrans.h"
 
-#define TRANS_TIMEOUT_SEC 10
-
 static int32_t mndSyncEqCtrlMsg(const SMsgCb *msgcb, SRpcMsg *pMsg) {
   if (pMsg == NULL || pMsg->pCont == NULL) {
     return -1;
@@ -80,36 +78,38 @@ int32_t mndProcessWriteMsg(const SSyncFSM *pFsm, SRpcMsg *pMsg, const SFsmCbMeta
   SSdbRaw   *pRaw = pMsg->pCont;
 
   int32_t transId = sdbGetIdFromRaw(pMnode->pSdb, pRaw);
-  pMgmt->errCode = pMeta->code;
   mInfo("trans:%d, is proposed, saved:%d code:0x%x, apply index:%" PRId64 " term:%" PRIu64 " config:%" PRId64
-        " role:%s raw:%p",
+        " role:%s raw:%p sec:%d seq:%" PRId64,
         transId, pMgmt->transId, pMeta->code, pMeta->index, pMeta->term, pMeta->lastConfigIndex, syncStr(pMeta->state),
-        pRaw);
+        pRaw, pMgmt->transSec, pMgmt->transSeq);
 
-  if (pMgmt->errCode == 0) {
+  if (pMeta->code == 0) {
     sdbWriteWithoutFree(pMnode->pSdb, pRaw);
     sdbSetApplyInfo(pMnode->pSdb, pMeta->index, pMeta->term, pMeta->lastConfigIndex);
   }
 
   taosThreadMutexLock(&pMgmt->lock);
+  pMgmt->errCode = pMeta->code;
+
   if (transId <= 0) {
     taosThreadMutexUnlock(&pMgmt->lock);
-    mError("trans:%d, invalid commit msg", transId);
+    mError("trans:%d, invalid commit msg, cache transId:%d seq:%" PRId64, transId, pMgmt->transId, pMgmt->transSeq);
   } else if (transId == pMgmt->transId) {
     if (pMgmt->errCode != 0) {
       mError("trans:%d, failed to propose since %s, post sem", transId, tstrerror(pMgmt->errCode));
     } else {
-      mInfo("trans:%d, is proposed and post sem", transId);
+      mInfo("trans:%d, is proposed and post sem, seq:%" PRId64, transId, pMgmt->transSeq);
     }
     pMgmt->transId = 0;
     pMgmt->transSec = 0;
+    pMgmt->transSeq = 0;
     tsem_post(&pMgmt->syncSem);
     taosThreadMutexUnlock(&pMgmt->lock);
   } else {
     taosThreadMutexUnlock(&pMgmt->lock);
     STrans *pTrans = mndAcquireTrans(pMnode, transId);
     if (pTrans != NULL) {
-      mInfo("trans:%d, execute in mnode which not leader", transId);
+      mInfo("trans:%d, execute in mnode which not leader or sync timeout", transId);
       mndTransExecute(pMnode, pTrans);
       mndReleaseTrans(pMnode, pTrans);
       // sdbWriteFile(pMnode->pSdb, SDB_WRITE_DELTA);
@@ -210,6 +210,7 @@ static void mndBecomeFollower(const SSyncFSM *pFsm) {
     mInfo("vgId:1, become follower and post sem, trans:%d, failed to propose since not leader", pMgmt->transId);
     pMgmt->transId = 0;
     pMgmt->transSec = 0;
+    pMgmt->transSeq = 0;
     pMgmt->errCode = TSDB_CODE_SYN_NOT_LEADER;
     tsem_post(&pMgmt->syncSem);
   }
@@ -272,6 +273,7 @@ int32_t mndInitSync(SMnode *pMnode) {
   taosThreadMutexInit(&pMgmt->lock, NULL);
   pMgmt->transId = 0;
   pMgmt->transSec = 0;
+  pMgmt->transSeq = 0;
 
   SSyncInfo syncInfo = {
       .snapshotStrategy = SYNC_STRATEGY_STANDARD_SNAPSHOT,
@@ -323,22 +325,24 @@ void mndCleanupSync(SMnode *pMnode) {
 }
 
 void mndSyncCheckTimeout(SMnode *pMnode) {
+  mTrace("check sync timeout");
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
   taosThreadMutexLock(&pMgmt->lock);
   if (pMgmt->transId != 0) {
     int32_t curSec = taosGetTimestampSec();
     int32_t delta = curSec - pMgmt->transSec;
-    if (delta > TRANS_TIMEOUT_SEC) {
-      mError("trans:%d, failed to propose since timeout, start:%d cur:%d delta:%d", pMgmt->transId, pMgmt->transSec,
-             curSec, delta);
+    if (delta > MNODE_TIMEOUT_SEC) {
+      mError("trans:%d, failed to propose since timeout, start:%d cur:%d delta:%d seq:%" PRId64, pMgmt->transId,
+             pMgmt->transSec, curSec, delta, pMgmt->transSeq);
       pMgmt->transId = 0;
       pMgmt->transSec = 0;
+      pMgmt->transSeq = 0;
       terrno = TSDB_CODE_SYN_TIMEOUT;
       pMgmt->errCode = TSDB_CODE_SYN_TIMEOUT;
       tsem_post(&pMgmt->syncSem);
     } else {
-      mDebug("trans:%d, waiting for sync confirm, start:%d cur:%d delta:%d", pMgmt->transId, pMgmt->transSec, curSec,
-             curSec - pMgmt->transSec);
+      mDebug("trans:%d, waiting for sync confirm, start:%d cur:%d delta:%d seq:%" PRId64, pMgmt->transId,
+             pMgmt->transSec, curSec, curSec - pMgmt->transSec, pMgmt->transSeq);
     }
   } else {
     // mTrace("check sync timeout msg, no trans waiting for confirm");
@@ -348,7 +352,6 @@ void mndSyncCheckTimeout(SMnode *pMnode) {
 
 int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
-  pMgmt->errCode = 0;
 
   SRpcMsg req = {.msgType = TDMT_MND_APPLY_MSG, .contLen = sdbGetRawTotalSize(pRaw)};
   if (req.contLen <= 0) return -1;
@@ -358,6 +361,8 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
   memcpy(req.pCont, pRaw, req.contLen);
 
   taosThreadMutexLock(&pMgmt->lock);
+  pMgmt->errCode = 0;
+
   if (pMgmt->transId != 0) {
     mError("trans:%d, can't be proposed since trans:%d already waiting for confirm", transId, pMgmt->transId);
     taosThreadMutexUnlock(&pMgmt->lock);
@@ -368,26 +373,28 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
   mInfo("trans:%d, will be proposed", transId);
   pMgmt->transId = transId;
   pMgmt->transSec = taosGetTimestampSec();
-  taosThreadMutexUnlock(&pMgmt->lock);
 
-  int32_t code = syncPropose(pMgmt->sync, &req, false);
+  int64_t seq = 0;
+  int32_t code = syncPropose(pMgmt->sync, &req, false, &seq);
   if (code == 0) {
-    mInfo("trans:%d, is proposing and wait sem", transId);
+    mInfo("trans:%d, is proposing and wait sem, seq:%" PRId64, transId, seq);
+    pMgmt->transSeq = seq;
+    taosThreadMutexUnlock(&pMgmt->lock);
     tsem_wait(&pMgmt->syncSem);
   } else if (code > 0) {
     mInfo("trans:%d, confirm at once since replica is 1, continue execute", transId);
-    taosThreadMutexLock(&pMgmt->lock);
     pMgmt->transId = 0;
     pMgmt->transSec = 0;
+    pMgmt->transSeq = 0;
     taosThreadMutexUnlock(&pMgmt->lock);
     sdbWriteWithoutFree(pMnode->pSdb, pRaw);
     sdbSetApplyInfo(pMnode->pSdb, req.info.conn.applyIndex, req.info.conn.applyTerm, SYNC_INDEX_INVALID);
     code = 0;
   } else {
     mError("trans:%d, failed to proposed since %s", transId, terrstr());
-    taosThreadMutexLock(&pMgmt->lock);
     pMgmt->transId = 0;
     pMgmt->transSec = 0;
+    pMgmt->transSeq = 0;
     taosThreadMutexUnlock(&pMgmt->lock);
     if (terrno == 0) {
       terrno = TSDB_CODE_APP_ERROR;
@@ -402,7 +409,7 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
   }
 
   terrno = pMgmt->errCode;
-  return pMgmt->errCode;
+  return terrno;
 }
 
 void mndSyncStart(SMnode *pMnode) {

source/dnode/vnode/inc/vnode.h

@@ -54,6 +54,7 @@ int32_t vnodeAlter(const char *path, SAlterVnodeReplicaReq *pReq, STfs *pTfs);
 void    vnodeDestroy(const char *path, STfs *pTfs);
 SVnode *vnodeOpen(const char *path, STfs *pTfs, SMsgCb msgCb);
 void    vnodePreClose(SVnode *pVnode);
+void    vnodeSyncCheckTimeout(SVnode* pVnode);
 void    vnodeClose(SVnode *pVnode);
 
 int32_t vnodeStart(SVnode *pVnode);

source/dnode/vnode/src/inc/vnodeInt.h

@@ -322,29 +322,32 @@ struct STsdbKeepCfg {
 };
 
 struct SVnode {
-  char*         path;
-  SVnodeCfg     config;
-  SVState       state;
-  SVStatis      statis;
-  STfs*         pTfs;
-  SMsgCb        msgCb;
-  TdThreadMutex mutex;
-  TdThreadCond  poolNotEmpty;
-  SVBufPool*    pPool;
-  SVBufPool*    inUse;
-  SMeta*        pMeta;
-  SSma*         pSma;
-  STsdb*        pTsdb;
-  SWal*         pWal;
-  STQ*          pTq;
-  SSink*        pSink;
-  tsem_t        canCommit;
-  int64_t       sync;
-  TdThreadMutex lock;
-  bool          blocked;
-  bool          restored;
-  tsem_t        syncSem;
-  SQHandle*     pQuery;
+  char*          path;
+  SVnodeCfg      config;
+  SVState        state;
+  SVStatis       statis;
+  STfs*          pTfs;
+  SMsgCb         msgCb;
+  TdThreadMutex  mutex;
+  TdThreadCond   poolNotEmpty;
+  SVBufPool*     pPool;
+  SVBufPool*     inUse;
+  SMeta*         pMeta;
+  SSma*          pSma;
+  STsdb*         pTsdb;
+  SWal*          pWal;
+  STQ*           pTq;
+  SSink*         pSink;
+  tsem_t         canCommit;
+  int64_t        sync;
+  TdThreadMutex  lock;
+  bool           blocked;
+  bool           restored;
+  tsem_t         syncSem;
+  int32_t        blockSec;
+  int64_t        blockSeq;
+  SRpcHandleInfo blockInfo;
+  SQHandle*      pQuery;
 };
 
 #define TD_VID(PVNODE) ((PVNODE)->config.vgId)

source/dnode/vnode/src/vnd/vnodeSync.c

@@ -22,32 +22,21 @@ static inline bool vnodeIsMsgWeak(tmsg_t type) { return false; }
 
 static inline void vnodeWaitBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
   const STraceId *trace = &pMsg->info.traceId;
-  vGTrace("vgId:%d, msg:%p wait block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
+  vGTrace("vgId:%d, msg:%p wait block, type:%s sec:%d seq:%" PRId64, pVnode->config.vgId, pMsg,
+          TMSG_INFO(pMsg->msgType), pVnode->blockSec, pVnode->blockSeq);
   tsem_wait(&pVnode->syncSem);
 }
 
-static inline void vnodeWaitBlockMsgOld(SVnode *pVnode, const SRpcMsg *pMsg) {
-  if (vnodeIsMsgBlock(pMsg->msgType)) {
-    const STraceId *trace = &pMsg->info.traceId;
-    taosThreadMutexLock(&pVnode->lock);
-    if (!pVnode->blocked) {
-      vGTrace("vgId:%d, msg:%p wait block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
-      pVnode->blocked = true;
-      taosThreadMutexUnlock(&pVnode->lock);
-      tsem_wait(&pVnode->syncSem);
-    } else {
-      taosThreadMutexUnlock(&pVnode->lock);
-    }
-  }
-}
-
 static inline void vnodePostBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
   if (vnodeIsMsgBlock(pMsg->msgType)) {
     const STraceId *trace = &pMsg->info.traceId;
     taosThreadMutexLock(&pVnode->lock);
     if (pVnode->blocked) {
-      vGTrace("vgId:%d, msg:%p post block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
+      vGTrace("vgId:%d, msg:%p post block, type:%s sec:%d seq:%" PRId64, pVnode->config.vgId, pMsg,
+              TMSG_INFO(pMsg->msgType), pVnode->blockSec, pVnode->blockSeq);
       pVnode->blocked = false;
+      pVnode->blockSec = 0;
+      pVnode->blockSeq = 0;
       tsem_post(&pVnode->syncSem);
     }
     taosThreadMutexUnlock(&pVnode->lock);
@@ -217,12 +206,17 @@ void vnodeProposeWriteMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs)
 #else
 
 static int32_t inline vnodeProposeMsg(SVnode *pVnode, SRpcMsg *pMsg, bool isWeak) {
+  int64_t seq = 0;
+
   taosThreadMutexLock(&pVnode->lock);
-  int32_t code = syncPropose(pVnode->sync, pMsg, isWeak);
+  int32_t code = syncPropose(pVnode->sync, pMsg, isWeak, &seq);
   bool    wait = (code == 0 && vnodeIsMsgBlock(pMsg->msgType));
   if (wait) {
     ASSERT(!pVnode->blocked);
     pVnode->blocked = true;
+    pVnode->blockSec = taosGetTimestampSec();
+    pVnode->blockSeq = seq;
+    pVnode->blockInfo = pMsg->info;
   }
   taosThreadMutexUnlock(&pVnode->lock);
 
@@ -289,12 +283,15 @@ void vnodeApplyWriteMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
   for (int32_t i = 0; i < numOfMsgs; ++i) {
     if (taosGetQitem(qall, (void **)&pMsg) == 0) continue;
     const STraceId *trace = &pMsg->info.traceId;
-    vGTrace("vgId:%d, msg:%p get from vnode-apply queue, type:%s handle:%p index:%" PRId64, vgId, pMsg,
-            TMSG_INFO(pMsg->msgType), pMsg->info.handle, pMsg->info.conn.applyIndex);
 
     if (vnodeIsMsgBlock(pMsg->msgType)) {
-      vTrace("vgId:%d, blocking msg obtained from apply-queue. index:%" PRId64 ", term: %" PRId64 ", type: %s", vgId,
-             pMsg->info.conn.applyIndex, pMsg->info.conn.applyTerm, TMSG_INFO(pMsg->msgType));
+      vGTrace("vgId:%d, msg:%p get from vnode-apply queue, type:%s handle:%p index:%" PRId64
+              ", blocking msg obtained sec:%d seq:%" PRId64,
+              vgId, pMsg, TMSG_INFO(pMsg->msgType), pMsg->info.handle, pMsg->info.conn.applyIndex, pVnode->blockSec,
+              pVnode->blockSeq);
+    } else {
+      vGTrace("vgId:%d, msg:%p get from vnode-apply queue, type:%s handle:%p index:%" PRId64, vgId, pMsg,
+              TMSG_INFO(pMsg->msgType), pMsg->info.handle, pMsg->info.conn.applyIndex);
     }
 
     SRpcMsg rsp = {.code = pMsg->code, .info = pMsg->info};
@@ -621,6 +618,30 @@ void vnodeSyncClose(SVnode *pVnode) {
   syncStop(pVnode->sync);
 }
 
+void vnodeSyncCheckTimeout(SVnode *pVnode) {
+  vTrace("vgId:%d, check sync timeout msg", pVnode->config.vgId);
+  taosThreadMutexLock(&pVnode->lock);
+  if (pVnode->blocked) {
+    int32_t curSec = taosGetTimestampSec();
+    int32_t delta = curSec - pVnode->blockSec;
+    if (delta > VNODE_TIMEOUT_SEC) {
+      vError("vgId:%d, failed to propose since timeout and post block, start:%d cur:%d delta:%d seq:%" PRId64,
+             pVnode->config.vgId, pVnode->blockSec, curSec, delta, pVnode->blockSeq);
+      if (syncSendTimeoutRsp(pVnode->sync, pVnode->blockSeq) != 0) {
+        SRpcMsg rpcMsg = {.code = TSDB_CODE_SYN_TIMEOUT, .info = pVnode->blockInfo};
+        vInfo("send timeout response since its applyed, seq:%" PRId64 " handle:%p ahandle:%p", pVnode->blockSeq,
+              rpcMsg.info.handle, rpcMsg.info.ahandle);
+        rpcSendResponse(&rpcMsg);
+      }
+      pVnode->blocked = false;
+      pVnode->blockSec = 0;
+      pVnode->blockSeq = 0;
+      tsem_post(&pVnode->syncSem);
+    }
+  }
+  taosThreadMutexUnlock(&pVnode->lock);
+}
+
 bool vnodeIsRoleLeader(SVnode *pVnode) {
   SSyncState state = syncGetState(pVnode->sync);
   return state.state == TAOS_SYNC_STATE_LEADER;

source/libs/sync/inc/syncInt.h

@@ -215,7 +215,7 @@ int32_t    syncNodeStart(SSyncNode* pSyncNode);
 int32_t    syncNodeStartStandBy(SSyncNode* pSyncNode);
 void       syncNodeClose(SSyncNode* pSyncNode);
 void       syncNodePreClose(SSyncNode* pSyncNode);
-int32_t    syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak);
+int32_t    syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak, int64_t *seq);
 int32_t    syncNodeRestore(SSyncNode* pSyncNode);
 void       syncHbTimerDataFree(SSyncHbTimerData* pData);
 

source/libs/sync/src/syncMain.c

@@ -151,7 +151,7 @@ int32_t syncReconfig(int64_t rid, SSyncCfg* pNewCfg) {
     }
 
     syncNodeStartHeartbeatTimer(pSyncNode);
-    //syncNodeReplicate(pSyncNode);
+    // syncNodeReplicate(pSyncNode);
   }
 
   syncNodeRelease(pSyncNode);
@@ -218,6 +218,26 @@ int32_t syncLeaderTransfer(int64_t rid) {
   return ret;
 }
 
+int32_t syncSendTimeoutRsp(int64_t rid, int64_t seq) {
+  SSyncNode* pNode = syncNodeAcquire(rid);
+  if (pNode == NULL) return -1;
+
+  SRpcMsg rpcMsg = {0};
+  int32_t ret = syncRespMgrGetAndDel(pNode->pSyncRespMgr, seq, &rpcMsg.info);
+  rpcMsg.code = TSDB_CODE_SYN_TIMEOUT;
+
+  syncNodeRelease(pNode);
+  if (ret == 1) {
+    sInfo("send timeout response, seq:%" PRId64 " handle:%p ahandle:%p", seq, rpcMsg.info.handle,
+          rpcMsg.info.ahandle);
+    rpcSendResponse(&rpcMsg);
+    return 0;
+  } else {
+    sInfo("no rpcinfo to send timeout response, seq:%" PRId64, seq);
+    return -1;
+  }
+}
+
 SyncIndex syncMinMatchIndex(SSyncNode* pSyncNode) {
   SyncIndex minMatchIndex = SYNC_INDEX_INVALID;
 
@@ -538,7 +558,7 @@ int32_t syncNodeLeaderTransferTo(SSyncNode* pSyncNode, SNodeInfo newLeader) {
   pMsg->newLeaderId.vgId = pSyncNode->vgId;
   pMsg->newNodeInfo = newLeader;
 
-  int32_t ret = syncNodePropose(pSyncNode, &rpcMsg, false);
+  int32_t ret = syncNodePropose(pSyncNode, &rpcMsg, false, NULL);
   rpcFreeCont(rpcMsg.pCont);
   return ret;
 }
@@ -670,19 +690,19 @@ void syncGetRetryEpSet(int64_t rid, SEpSet* pEpSet) {
   syncNodeRelease(pSyncNode);
 }
 
-int32_t syncPropose(int64_t rid, SRpcMsg* pMsg, bool isWeak) {
+int32_t syncPropose(int64_t rid, SRpcMsg* pMsg, bool isWeak, int64_t* seq) {
   SSyncNode* pSyncNode = syncNodeAcquire(rid);
   if (pSyncNode == NULL) {
     sError("sync propose error");
     return -1;
   }
 
-  int32_t ret = syncNodePropose(pSyncNode, pMsg, isWeak);
+  int32_t ret = syncNodePropose(pSyncNode, pMsg, isWeak, seq);
   syncNodeRelease(pSyncNode);
   return ret;
 }
 
-int32_t syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak) {
+int32_t syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak, int64_t* seq) {
   if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
     terrno = TSDB_CODE_SYN_NOT_LEADER;
     sNError(pSyncNode, "sync propose not leader, %s, type:%s", syncStr(pSyncNode->state), TMSG_INFO(pMsg->msgType));
@@ -739,6 +759,7 @@ int32_t syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak) {
       (void)syncRespMgrDel(pSyncNode->pSyncRespMgr, seqNum);
     }
 
+    if (seq != NULL) *seq = seqNum;
     return code;
   }
 }

source/libs/sync/test/syncConfigChangeSnapshotTest.cpp

@@ -337,7 +337,7 @@ int main(int argc, char** argv) {
 
     if (alreadySend < writeRecordNum) {
       SRpcMsg* pRpcMsg = createRpcMsg(alreadySend, writeRecordNum, myIndex);
-      int32_t  ret = syncPropose(rid, pRpcMsg, false);
+      int32_t  ret = syncPropose(rid, pRpcMsg, false, NULL);
       if (ret == -1 && terrno == TSDB_CODE_SYN_NOT_LEADER) {
         sTrace("%s value%d write not leader", s, alreadySend);
       } else {

source/libs/sync/test/syncConfigChangeTest.cpp

@@ -249,7 +249,7 @@ int main(int argc, char** argv) {
 
     if (alreadySend < writeRecordNum) {
       SRpcMsg* pRpcMsg = createRpcMsg(alreadySend, writeRecordNum, myIndex);
-      int32_t  ret = syncPropose(rid, pRpcMsg, false);
+      int32_t  ret = syncPropose(rid, pRpcMsg, false, NULL);
       if (ret == -1 && terrno == TSDB_CODE_SYN_NOT_LEADER) {
         sTrace("%s value%d write not leader", s, alreadySend);
       } else {

source/libs/sync/test/syncReplicateTest.cpp

@@ -189,7 +189,7 @@ int main(int argc, char** argv) {
 
     if (alreadySend < writeRecordNum) {
       SRpcMsg* pRpcMsg = createRpcMsg(alreadySend, writeRecordNum, myIndex);
-      int32_t  ret = syncPropose(rid, pRpcMsg, false);
+      int32_t  ret = syncPropose(rid, pRpcMsg, false, NULL);
       if (ret == -1 && terrno == TSDB_CODE_SYN_NOT_LEADER) {
         sTrace("%s value%d write not leader", s, alreadySend);
       } else {

source/libs/sync/test/syncTestTool.cpp

@@ -396,7 +396,7 @@ int main(int argc, char** argv) {
 
     if (alreadySend < writeRecordNum) {
       SRpcMsg* pRpcMsg = createRpcMsg(alreadySend, writeRecordNum, myIndex);
-      int32_t  ret = syncPropose(rid, pRpcMsg, false);
+      int32_t  ret = syncPropose(rid, pRpcMsg, false, NULL);
       if (ret == -1 && terrno == TSDB_CODE_SYN_NOT_LEADER) {
         sTrace("%s value%d write not leader, leaderTransferWait:%d", simpleStr, alreadySend, leaderTransferWait);
       } else {