diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5fee2e548aaf66e0769a0da569c6d910969179ba..0991a97d6e1906471cb38101cda47c269ddeb560 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,6 +13,8 @@ ENDIF ()
 SET(TD_ACCOUNT FALSE)
 SET(TD_ADMIN FALSE)
 SET(TD_GRANT FALSE)
+SET(TD_SYNC TRUE)
+SET(TD_MQTT TRUE)
 
 SET(TD_COVER FALSE)
 SET(TD_MEM_CHECK FALSE)
diff --git a/cmake/define.inc b/cmake/define.inc
index 0a25dd9ee71df0d16cdf921fde6a923529192421..e449d4c2134d639d9d3f08f884bedcb4cc74dd3a 100755
--- a/cmake/define.inc
+++ b/cmake/define.inc
@@ -13,6 +13,14 @@ IF (TD_GRANT)
   ADD_DEFINITIONS(-D_GRANT)
 ENDIF ()
 
+IF (TD_SYNC)
+  ADD_DEFINITIONS(-D_SYNC)
+ENDIF ()
+
+IF (TD_MQTT)
+  ADD_DEFINITIONS(-D_MQTT)
+ENDIF ()
+
 IF (TD_GODLL)
   ADD_DEFINITIONS(-D_TD_GO_DLL_)
 ENDIF ()
diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index 64930b29d2880ba70348e1fd50c4bd953ba2d980..8c6c73c4400da973726109aa66a50c97e3a2a6f6 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -10,6 +10,6 @@ ADD_SUBDIRECTORY(cJson)
 ADD_SUBDIRECTORY(wepoll)
 ADD_SUBDIRECTORY(MsvcLibX)
 
-IF (TD_LINUX)
+IF (TD_LINUX AND TD_MQTT)
   ADD_SUBDIRECTORY(MQTT-C)
 ENDIF ()
\ No newline at end of file
diff --git a/deps/MQTT-C/CMakeLists.txt b/deps/MQTT-C/CMakeLists.txt
index ea5d4238d57a87b9546510f1511869f1b68e7722..15b35525210ec90e6e2efbdcd0e6128cb4d34f91 100644
--- a/deps/MQTT-C/CMakeLists.txt
+++ b/deps/MQTT-C/CMakeLists.txt
@@ -1,5 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
-project(MQTT-C VERSION 1.1.2 LANGUAGES C)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 
 # MQTT-C build options
 option(MQTT_C_OpenSSL_SUPPORT "Build MQTT-C with OpenSSL support?" OFF)
diff --git a/src/dnode/CMakeLists.txt b/src/dnode/CMakeLists.txt
index 24a109dd2985f6298f10185fa20df45014565c07..dea90811ad83206b05e29b0e2468b8057ac8d7a8 100644
--- a/src/dnode/CMakeLists.txt
+++ b/src/dnode/CMakeLists.txt
@@ -11,10 +11,12 @@ AUX_SOURCE_DIRECTORY(src SRC)
 
 IF (TD_LINUX)
   ADD_EXECUTABLE(taosd ${SRC})
+  TARGET_LINK_LIBRARIES(taosd mnode monitor http tsdb twal vnode cJson lz4)
+
   IF (TD_SOMODE_STATIC)
-    TARGET_LINK_LIBRARIES(taosd mnode taos_static monitor http mqtt tsdb twal vnode cJson lz4 balance sync)
+    TARGET_LINK_LIBRARIES(taosd taos_static)
   ELSE ()
-    TARGET_LINK_LIBRARIES(taosd mnode taos monitor http mqtt tsdb twal vnode cJson lz4 balance sync)
+    TARGET_LINK_LIBRARIES(taosd taos)
   ENDIF ()
 
   IF (TD_ACCOUNT)
@@ -25,6 +27,14 @@ IF (TD_LINUX)
     TARGET_LINK_LIBRARIES(taosd grant)
   ENDIF ()
 
+  IF (TD_MQTT)
+    TARGET_LINK_LIBRARIES(taosd mqtt)
+  ENDIF ()
+
+  IF (TD_SYNC)
+    TARGET_LINK_LIBRARIES(taosd balance sync)
+  ENDIF ()
+
   SET(PREPARE_ENV_CMD "prepare_env_cmd")
   SET(PREPARE_ENV_TARGET "prepare_env_target")
   ADD_CUSTOM_COMMAND(OUTPUT ${PREPARE_ENV_CMD}
diff --git a/src/dnode/src/dnodeModule.c b/src/dnode/src/dnodeModule.c
index f8acb871c578deda6f51d4ae692eedfc89f1afd6..e1d298089caec13af8f34d508a3620d9b4508b0f 100644
--- a/src/dnode/src/dnodeModule.c
+++ b/src/dnode/src/dnodeModule.c
@@ -62,6 +62,7 @@ static void dnodeAllocModules() {
     dnodeSetModuleStatus(TSDB_MOD_HTTP);
   }
 
+#ifdef _MQTT
   tsModule[TSDB_MOD_MQTT].enable = (tsEnableMqttModule == 1);
   tsModule[TSDB_MOD_MQTT].name = "mqtt";
   tsModule[TSDB_MOD_MQTT].initFp = mqttInitSystem;
@@ -71,6 +72,7 @@ static void dnodeAllocModules() {
   if (tsEnableMqttModule) {
     dnodeSetModuleStatus(TSDB_MOD_MQTT);
   }
+#endif  
 
   tsModule[TSDB_MOD_MONITOR].enable    = (tsEnableMonitorModule == 1);
   tsModule[TSDB_MOD_MONITOR].name      = "monitor";
diff --git a/src/mnode/src/mnodeDb.c b/src/mnode/src/mnodeDb.c
index cdea9eda60a4537137058b307163199bff213051..8187cfd2651f55472f32a4e13aeec27b3e427421 100644
--- a/src/mnode/src/mnodeDb.c
+++ b/src/mnode/src/mnodeDb.c
@@ -310,6 +310,13 @@ static int32_t mnodeCheckDbCfg(SDbCfg *pCfg) {
     return TSDB_CODE_MND_INVALID_DB_OPTION;
   }
 
+#ifndef _SYNC
+  if (pCfg->replications != 1) {
+    mError("invalid db option replications:%d can only be 1 in this version", pCfg->replications);
+    return TSDB_CODE_MND_INVALID_DB_OPTION;
+  }
+#endif
+
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/mnode/src/mnodeDnode.c b/src/mnode/src/mnodeDnode.c
index d5b9d18e37263e01d70e9301898be2ca51b9a045..aaad2462ea996641fd2b8697547939fc0a08d457 100644
--- a/src/mnode/src/mnodeDnode.c
+++ b/src/mnode/src/mnodeDnode.c
@@ -78,6 +78,9 @@ static int32_t mnodeDnodeActionInsert(SSdbOper *pOper) {
 static int32_t mnodeDnodeActionDelete(SSdbOper *pOper) {
   SDnodeObj *pDnode = pOper->pObj;
  
+#ifndef _SYNC 
+  mnodeDropAllDnodeVgroups(pDnode);
+#endif  
   mnodeDropMnodeLocal(pDnode->dnodeId);
   balanceAsyncNotify();
 
@@ -585,7 +588,11 @@ static int32_t mnodeDropDnodeByEp(char *ep, SMnodeMsg *pMsg) {
 
   mInfo("dnode:%d, start to drop it", pDnode->dnodeId);
 
+#ifndef _SYNC
+  int32_t code = mnodeDropDnode(pDnode, pMsg);
+#else
   int32_t code = balanceDropDnode(pDnode);
+#endif  
   mnodeDecDnodeRef(pDnode);
   return code;
 }
@@ -1043,3 +1050,59 @@ static char* mnodeGetDnodeAlternativeRoleStr(int32_t alternativeRole) {
   }
 }
 
+#ifndef _SYNC
+
+int32_t balanceInit() { return TSDB_CODE_SUCCESS; }
+void    balanceCleanUp() {}
+void    balanceAsyncNotify() {}
+void    balanceSyncNotify() {}
+void    balanceReset() {}
+int32_t balanceAlterDnode(struct SDnodeObj *pDnode, int32_t vnodeId, int32_t dnodeId) { return TSDB_CODE_SYN_NOT_ENABLED; }
+
+char* syncRole[] = {
+  "offline",
+  "unsynced",
+  "syncing",
+  "slave",
+  "master"
+};
+
+int32_t balanceAllocVnodes(SVgObj *pVgroup) {
+  void *     pIter = NULL;
+  SDnodeObj *pDnode = NULL;
+  SDnodeObj *pSelDnode = NULL;
+  float      vnodeUsage = 1000.0;
+
+  while (1) {
+    pIter = mnodeGetNextDnode(pIter, &pDnode);
+    if (pDnode == NULL) break;
+
+    if (pDnode->numOfCores > 0 && pDnode->openVnodes < TSDB_MAX_VNODES) {
+      float openVnodes = pDnode->openVnodes;
+      if (pDnode->isMgmt) openVnodes += tsMnodeEqualVnodeNum;
+
+      float usage = openVnodes / pDnode->numOfCores;
+      if (usage <= vnodeUsage) {
+        pSelDnode = pDnode;
+        vnodeUsage = usage;
+      }
+    }
+    mnodeDecDnodeRef(pDnode);
+  }
+
+  sdbFreeIter(pIter);
+
+  if (pSelDnode == NULL) {
+    mError("failed to alloc vnode to vgroup");
+    return TSDB_CODE_MND_NO_ENOUGH_DNODES;
+  }
+
+  pVgroup->vnodeGid[0].dnodeId = pSelDnode->dnodeId;
+  pVgroup->vnodeGid[0].pDnode = pSelDnode;
+
+  mDebug("dnode:%d, alloc one vnode to vgroup, openVnodes:%d", pSelDnode->dnodeId, pSelDnode->openVnodes);
+  return TSDB_CODE_SUCCESS;
+}
+
+#endif 
+
diff --git a/src/plugins/CMakeLists.txt b/src/plugins/CMakeLists.txt
index 2bc6bf54bfe9b330ede401cee521b0931f4be684..742235894a8781e4dcfa09cb86985c73df74d046 100644
--- a/src/plugins/CMakeLists.txt
+++ b/src/plugins/CMakeLists.txt
@@ -3,4 +3,6 @@ PROJECT(TDengine)
 
 ADD_SUBDIRECTORY(monitor)
 ADD_SUBDIRECTORY(http)
-ADD_SUBDIRECTORY(mqtt)
+IF (TD_MQTT)
+  ADD_SUBDIRECTORY(mqtt)
+ENDIF ()
\ No newline at end of file
diff --git a/src/plugins/http/CMakeLists.txt b/src/plugins/http/CMakeLists.txt
index 2c3cbf636fb318088fa0636bbbd4cac2372abcee..5d8b52986a6bb1cc451dac10cd92c8c37a352c4b 100644
--- a/src/plugins/http/CMakeLists.txt
+++ b/src/plugins/http/CMakeLists.txt
@@ -11,11 +11,12 @@ AUX_SOURCE_DIRECTORY(src SRC)
   
 IF (TD_LINUX)
   ADD_LIBRARY(http ${SRC})
+  TARGET_LINK_LIBRARIES(http z)
 
   IF (TD_SOMODE_STATIC)
-    TARGET_LINK_LIBRARIES(http taos_static z)
+    TARGET_LINK_LIBRARIES(http taos_static)
   ELSE ()  
-    TARGET_LINK_LIBRARIES(http taos z)
+    TARGET_LINK_LIBRARIES(http taos)
   ENDIF ()
 
   IF (TD_ADMIN)
diff --git a/src/plugins/monitor/CMakeLists.txt b/src/plugins/monitor/CMakeLists.txt
index 26a7775e9c42ef8752fb0e02e081896d6d3d9ed9..edea2187ea23caa5d809346a43d14f6ffaf8a309 100644
--- a/src/plugins/monitor/CMakeLists.txt
+++ b/src/plugins/monitor/CMakeLists.txt
@@ -2,11 +2,11 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
 AUX_SOURCE_DIRECTORY(./src SRC)
-  
+
 IF (TD_LINUX)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
   ADD_LIBRARY(monitor ${SRC})
   
   IF (TD_SOMODE_STATIC)
diff --git a/src/plugins/mqtt/CMakeLists.txt b/src/plugins/mqtt/CMakeLists.txt
index 2467af588ceb8fe68c590adcc7acd769d6fa0109..cf5729d6087065bd38a5bed140ec01b1b531f454 100644
--- a/src/plugins/mqtt/CMakeLists.txt
+++ b/src/plugins/mqtt/CMakeLists.txt
@@ -2,21 +2,19 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/include)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/examples/templates)
 AUX_SOURCE_DIRECTORY(src SRC)
 
 IF (TD_LINUX)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/include)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/examples/templates)
   ADD_LIBRARY(mqtt ${SRC})
+  TARGET_LINK_LIBRARIES(mqtt cJson mqttc)
 
   IF (TD_SOMODE_STATIC)
-    TARGET_LINK_LIBRARIES(mqtt taos_static cJson mqttc)
+    TARGET_LINK_LIBRARIES(mqtt taos_static)
   ELSE ()
-    TARGET_LINK_LIBRARIES(mqtt taos cJson mqttc)
-  ENDIF ()
-  IF (TD_ADMIN)
-    TARGET_LINK_LIBRARIES(mqtt admin cJson)
+    TARGET_LINK_LIBRARIES(mqtt taos)
   ENDIF ()
 ENDIF ()
diff --git a/src/query/CMakeLists.txt b/src/query/CMakeLists.txt
index e2bee4285fd94fc71899247f7d2ed94849f30a93..c1024f008095be76dba0d8dd59447a489c015772 100644
--- a/src/query/CMakeLists.txt
+++ b/src/query/CMakeLists.txt
@@ -8,10 +8,9 @@ INCLUDE_DIRECTORIES(inc)
 AUX_SOURCE_DIRECTORY(src SRC)
 ADD_LIBRARY(query ${SRC})
 SET_SOURCE_FILES_PROPERTIES(src/sql.c PROPERTIES COMPILE_FLAGS -w)
+TARGET_LINK_LIBRARIES(query tsdb tutil)
 
 IF (TD_LINUX)
-  TARGET_LINK_LIBRARIES(query tsdb tutil m rt)
+  TARGET_LINK_LIBRARIES(query m rt)
   ADD_SUBDIRECTORY(tests)
-ELSEIF (TD_WINDOWS)
-   TARGET_LINK_LIBRARIES(query tsdb tutil)
 ENDIF ()
diff --git a/src/tsdb/CMakeLists.txt b/src/tsdb/CMakeLists.txt
index cef1d0bba7ada660ef5f8059c264b2bdfd0056d2..d86b104f234a7e39bd67f728370e188c965cf42a 100644
--- a/src/tsdb/CMakeLists.txt
+++ b/src/tsdb/CMakeLists.txt
@@ -3,13 +3,10 @@ PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(inc)
 AUX_SOURCE_DIRECTORY(src SRC)
+ADD_LIBRARY(tsdb ${SRC})
+TARGET_LINK_LIBRARIES(tsdb common tutil)
 
 IF (TD_LINUX)
-  ADD_LIBRARY(tsdb ${SRC})
-  TARGET_LINK_LIBRARIES(tsdb common tutil)
   # Someone has no gtest directory, so comment it
   # ADD_SUBDIRECTORY(tests)
-ELSEIF (TD_WINDOWS)
-  ADD_LIBRARY(tsdb ${SRC})
-  TARGET_LINK_LIBRARIES(tsdb common tutil)
 ENDIF ()
diff --git a/src/util/CMakeLists.txt b/src/util/CMakeLists.txt
index b2778b69d93be9c86bb948223967d755fed9bbbe..e63a085cc8d9e81d68e770df64f6c0d6c43e1807 100644
--- a/src/util/CMakeLists.txt
+++ b/src/util/CMakeLists.txt
@@ -3,9 +3,10 @@ PROJECT(TDengine)
 
 AUX_SOURCE_DIRECTORY(src SRC)
 ADD_LIBRARY(tutil ${SRC})
+TARGET_LINK_LIBRARIES(tutil pthread osdetail lz4)
   
 IF (TD_LINUX)
-  TARGET_LINK_LIBRARIES(tutil pthread osdetail m rt lz4)
+  TARGET_LINK_LIBRARIES(tutil m rt)
   ADD_SUBDIRECTORY(tests)
 
   FIND_PATH(ICONV_INCLUDE_EXIST iconv.h /usr/include/ /usr/local/include/)
@@ -24,7 +25,7 @@ IF (TD_LINUX)
   ENDIF ()
 
 ELSEIF (TD_WINDOWS)
-  TARGET_LINK_LIBRARIES(tutil iconv regex pthread osdetail winmm IPHLPAPI ws2_32 lz4 wepoll)
+  TARGET_LINK_LIBRARIES(tutil iconv regex winmm IPHLPAPI ws2_32 wepoll)
 ELSEIF(TD_DARWIN)
-  TARGET_LINK_LIBRARIES(tutil iconv pthread osdetail lz4)
+  TARGET_LINK_LIBRARIES(tutil iconv)
 ENDIF()
diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index c294e86839ce372a0bf9c53797dd573da88532ed..5a778156ff4fa88a798d260654edf04860d9692b 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -47,6 +47,15 @@ static void     vnodeNotifyRole(void *ahandle, int8_t role);
 static void     vnodeCtrlFlow(void *handle, int32_t mseconds); 
 static int      vnodeNotifyFileSynced(void *ahandle, uint64_t fversion);
 
+#ifndef _SYNC
+tsync_h syncStart(const SSyncInfo *info) { return NULL; }
+int32_t syncForwardToPeer(tsync_h shandle, void *pHead, void *mhandle, int qtype) { return 0; }
+void    syncStop(tsync_h shandle) {}
+int32_t syncReconfig(tsync_h shandle, const SSyncCfg * cfg) { return 0; }
+int     syncGetNodesRole(tsync_h shandle, SNodesRole * cfg) { return 0; }
+void    syncConfirmForward(tsync_h shandle, uint64_t version, int32_t code) {}
+#endif
+
 int32_t vnodeInitResources() {
   vnodeInitWriteFp();
   vnodeInitReadFp();
@@ -289,12 +298,16 @@ int32_t vnodeOpen(int32_t vnode, char *rootDir) {
   syncInfo.notifyFileSynced = vnodeNotifyFileSynced;
   pVnode->sync = syncStart(&syncInfo);
 
+#ifndef _SYNC
+  pVnode->role = TAOS_SYNC_ROLE_MASTER;
+#else
   if (pVnode->sync == NULL) {
     vError("vgId:%d, failed to open sync module, replica:%d reason:%s", pVnode->vgId, pVnode->syncCfg.replica,
            tstrerror(terrno));
     vnodeCleanUp(pVnode);
     return terrno;
   }
+#endif  
 
   pVnode->qMgmt = qOpenQueryMgmt(pVnode->vgId);
   if (pVnode->qMgmt == NULL) {