refactor(sync): make leader life longer

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

@@ -448,7 +448,8 @@ int32_t vnodeProcessSyncMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
     }
   }
 
-  vTrace("vgId:%d, sync msg:%p is processed, type:%s code:0x%x", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType), code);
+  vTrace("vgId:%d, sync msg:%p is processed, type:%s code:0x%x", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType),
+         code);
   syncNodeRelease(pSyncNode);
   if (code != 0 && terrno == 0) {
     terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
@@ -629,8 +630,8 @@ static int32_t vnodeSnapshotStartWrite(struct SSyncFSM *pFsm, void *pParam, void
 static int32_t vnodeSnapshotStopWrite(struct SSyncFSM *pFsm, void *pWriter, bool isApply, SSnapshot *pSnapshot) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
-  vInfo("vgId:%d, stop write vnode snapshot, apply:%d, index:%" PRId64 " term:%" PRIu64 " config:%" PRId64, pVnode->config.vgId, isApply,
-        pSnapshot->lastApplyIndex, pSnapshot->lastApplyTerm, pSnapshot->lastApplyIndex);
+  vInfo("vgId:%d, stop write vnode snapshot, apply:%d, index:%" PRId64 " term:%" PRIu64 " config:%" PRId64,
+        pVnode->config.vgId, isApply, pSnapshot->lastApplyIndex, pSnapshot->lastApplyTerm, pSnapshot->lastApplyIndex);
 
   int32_t code = vnodeSnapWriterClose(pWriter, !isApply, pSnapshot);
   vInfo("vgId:%d, apply vnode snapshot finished, code:0x%x", pVnode->config.vgId, code);
@@ -707,7 +708,7 @@ int32_t vnodeSyncOpen(SVnode *pVnode, char *path) {
   }
 
   setPingTimerMS(pVnode->sync, 5000);
-  setElectTimerMS(pVnode->sync, 1300);
+  setElectTimerMS(pVnode->sync, 2800);
   setHeartbeatTimerMS(pVnode->sync, 900);
   return 0;
 }

source/libs/sync/inc/syncEnv.h

@@ -31,7 +31,7 @@ extern "C" {
 #define TIMER_MAX_MS         0x7FFFFFFF
 #define ENV_TICK_TIMER_MS    1000
 #define PING_TIMER_MS        5000
-#define ELECT_TIMER_MS_MIN 1300
+#define ELECT_TIMER_MS_MIN   5000
 #define ELECT_TIMER_MS_MAX   (ELECT_TIMER_MS_MIN * 2)
 #define ELECT_TIMER_MS_RANGE (ELECT_TIMER_MS_MAX - ELECT_TIMER_MS_MIN)
 #define HEARTBEAT_TIMER_MS   900

source/libs/sync/src/syncMain.c

@@ -730,7 +730,8 @@ int32_t syncNodeProposeBatch(SSyncNode* pSyncNode, SRpcMsg** pMsgPArr, bool* pIs
   for (int i = 0; i < arrSize; ++i) {
     do {
       char eventLog[128];
-      snprintf(eventLog, sizeof(eventLog), "propose message, type:%s batch:%d", TMSG_INFO(pMsgPArr[i]->msgType), arrSize);
+      snprintf(eventLog, sizeof(eventLog), "propose message, type:%s batch:%d", TMSG_INFO(pMsgPArr[i]->msgType),
+               arrSize);
       syncNodeEventLog(pSyncNode, eventLog);
     } while (0);
 
@@ -834,7 +835,8 @@ int32_t syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak) {
         rpcFreeCont(rpcMsg.pCont);
         syncRespMgrDel(pSyncNode->pSyncRespMgr, seqNum);
         ret = 1;
-        sDebug("vgId:%d, sync optimize index:%" PRId64 ", type:%s", pSyncNode->vgId, retIndex, TMSG_INFO(pMsg->msgType));
+        sDebug("vgId:%d, sync optimize index:%" PRId64 ", type:%s", pSyncNode->vgId, retIndex,
+               TMSG_INFO(pMsg->msgType));
       } else {
         ret = -1;
         terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
@@ -1114,7 +1116,7 @@ void syncNodeStart(SSyncNode* pSyncNode) {
   }
 
   int32_t ret = 0;
-  ret = syncNodeStartPingTimer(pSyncNode);
+  // ret = syncNodeStartPingTimer(pSyncNode);
   ASSERT(ret == 0);
 }
 
@@ -1250,6 +1252,13 @@ int32_t syncNodeStartElectTimer(SSyncNode* pSyncNode, int32_t ms) {
     taosTmrReset(pSyncNode->FpElectTimerCB, pSyncNode->electTimerMS, pSyncNode, gSyncEnv->pTimerManager,
                  &pSyncNode->pElectTimer);
     atomic_store_64(&pSyncNode->electTimerLogicClock, pSyncNode->electTimerLogicClockUser);
+
+    do {
+      char logBuf[128];
+      snprintf(logBuf, sizeof(logBuf), "elect timer reset, ms:%d", ms);
+      syncNodeEventLog(pSyncNode, logBuf);
+    } while (0);
+
   } else {
     sError("vgId:%d, start elect timer error, sync env is stop", pSyncNode->vgId);
   }
@@ -1281,6 +1290,14 @@ int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode) {
     electMS = syncUtilElectRandomMS(pSyncNode->electBaseLine, 2 * pSyncNode->electBaseLine);
   }
   ret = syncNodeRestartElectTimer(pSyncNode, electMS);
+
+  do {
+    char logBuf[128];
+    snprintf(logBuf, sizeof(logBuf), "reset elect timer, min:%d, max:%d, ms:%d", pSyncNode->electBaseLine,
+             2 * pSyncNode->electBaseLine, electMS);
+    syncNodeEventLog(pSyncNode, logBuf);
+  } while (0);
+
   return ret;
 }
 
@@ -1293,6 +1310,13 @@ int32_t syncNodeStartHeartbeatTimer(SSyncNode* pSyncNode) {
   } else {
     sError("vgId:%d, start heartbeat timer error, sync env is stop", pSyncNode->vgId);
   }
+
+  do {
+    char logBuf[128];
+    snprintf(logBuf, sizeof(logBuf), "start heartbeat timer, ms:%d", pSyncNode->heartbeatTimerMS);
+    syncNodeEventLog(pSyncNode, logBuf);
+  } while (0);
+
   return ret;
 }
 
@@ -1304,6 +1328,13 @@ int32_t syncNodeStartNowHeartbeatTimer(SSyncNode* pSyncNode) {
   } else {
     sError("vgId:%d, start heartbeat timer error, sync env is stop", pSyncNode->vgId);
   }
+
+  do {
+    char logBuf[128];
+    snprintf(logBuf, sizeof(logBuf), "start heartbeat timer, ms:%d", 1);
+    syncNodeEventLog(pSyncNode, logBuf);
+  } while (0);
+
   return ret;
 }
 
@@ -1312,6 +1343,8 @@ int32_t syncNodeStopHeartbeatTimer(SSyncNode* pSyncNode) {
   atomic_add_fetch_64(&pSyncNode->heartbeatTimerLogicClockUser, 1);
   taosTmrStop(pSyncNode->pHeartbeatTimer);
   pSyncNode->pHeartbeatTimer = NULL;
+  sTrace("vgId:%d, stop heartbeat timer", pSyncNode->vgId);
+
   return ret;
 }
 
@@ -1559,12 +1592,13 @@ 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, 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, pSyncNode->electTimerLogicClockUser, pSyncNode->heartbeatTimerLogicClockUser,
+               printStr);
     } else {
       snprintf(logBuf, sizeof(logBuf), "%s", str);
     }

source/libs/sync/src/syncReplication.c

@@ -141,7 +141,8 @@ int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode) {
              ", match-index:%d, raftid:%" PRId64,
              pSyncNode->vgId, nextIndex, newNextIndex, SYNC_INDEX_INVALID, pDestId->addr);
 
-      syncNodeRestartNowHeartbeatTimer(pSyncNode);
+      // syncNodeRestartNowHeartbeatTimer(pSyncNode);
+      syncNodeStartNowHeartbeatTimer(pSyncNode);
       return -1;
     }
 

source/libs/sync/src/syncTimeout.c

@@ -48,14 +48,16 @@ int32_t syncNodeOnTimeoutCb(SSyncNode* ths, SyncTimeout* pMsg) {
   } else if (pMsg->timeoutType == SYNC_TIMEOUT_ELECTION) {
     if (atomic_load_64(&ths->electTimerLogicClockUser) <= pMsg->logicClock) {
       ++(ths->electTimerCounter);
-      sInfo("vgId:%d, sync timeout, type:election count:%d", ths->vgId, ths->electTimerCounter);
+      sInfo("vgId:%d, sync timeout, type:election count:%d, electTimerLogicClockUser:%ld", ths->vgId,
+            ths->electTimerCounter, ths->electTimerLogicClockUser);
       syncNodeElect(ths);
     }
 
   } else if (pMsg->timeoutType == SYNC_TIMEOUT_HEARTBEAT) {
     if (atomic_load_64(&ths->heartbeatTimerLogicClockUser) <= pMsg->logicClock) {
       ++(ths->heartbeatTimerCounter);
-      sInfo("vgId:%d, sync timeout, type:replicate count:%d", ths->vgId, ths->heartbeatTimerCounter);
+      sInfo("vgId:%d, sync timeout, type:replicate count:%d, heartbeatTimerLogicClockUser:%ld", ths->vgId,
+            ths->heartbeatTimerCounter, ths->heartbeatTimerLogicClockUser);
       syncNodeReplicate(ths);
     }
   } else {

source/libs/sync/src/syncUtil.c

@@ -125,7 +125,10 @@ int32_t syncUtilRand(int32_t max) { return taosRand() % max; }
 
 int32_t syncUtilElectRandomMS(int32_t min, int32_t max) {
   ASSERT(min > 0 && max > 0 && max >= min);
-  return min + syncUtilRand(max - min);
+  int32_t rdm = min + syncUtilRand(max - min);
+
+  // sDebug("random min:%d, max:%d, rdm:%d", min, max, rdm);
+  return rdm;
 }
 
 int32_t syncUtilQuorum(int32_t replicaNum) { return replicaNum / 2 + 1; }