diff --git a/src/sync/CMakeLists.txt b/src/sync/CMakeLists.txt
index 60271c771ca0a01bd449cb878fe2269759250fd3..aa38a56f38146bafda8a10ca786bf085bb4ea339 100644
--- a/src/sync/CMakeLists.txt
+++ b/src/sync/CMakeLists.txt
@@ -5,12 +5,12 @@ INCLUDE_DIRECTORIES(inc)
 AUX_SOURCE_DIRECTORY(src SRC)
   
 IF (TD_LINUX)
-  LIST(REMOVE_ITEM SRC src/tarbitrator.c)
+  LIST(REMOVE_ITEM SRC src/syncArbitrator.c)
   ADD_LIBRARY(sync ${SRC})
   TARGET_LINK_LIBRARIES(sync tutil pthread common)
 
-  LIST(APPEND BIN_SRC src/tarbitrator.c)
-  LIST(APPEND BIN_SRC src/taosTcpPool.c)
+  LIST(APPEND BIN_SRC src/syncArbitrator.c)
+  LIST(APPEND BIN_SRC src/syncTcp.c)
   ADD_EXECUTABLE(tarbitrator ${BIN_SRC})
   TARGET_LINK_LIBRARIES(tarbitrator sync common osdetail tutil)
 
diff --git a/src/sync/inc/taosTcpPool.h b/src/sync/inc/syncTcp.h
similarity index 77%
rename from src/sync/inc/taosTcpPool.h
rename to src/sync/inc/syncTcp.h
index 41043b0cd4c886616d5cecd2739eae684052c395..7db51f2a7115ccf23ee42d17cbe62f0798adf260 100644
--- a/src/sync/inc/taosTcpPool.h
+++ b/src/sync/inc/syncTcp.h
@@ -13,16 +13,13 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_TCP_POOL_H
-#define TDENGINE_TCP_POOL_H
+#ifndef TDENGINE_SYNC_TCP_POOL_H
+#define TDENGINE_SYNC_TCP_POOL_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-typedef void *ttpool_h;
-typedef void *tthread_h;
-
 typedef struct {
   int32_t   numOfThreads;
   uint32_t  serverIp;
@@ -33,10 +30,10 @@ typedef struct {
   void    (*processIncomingConn)(int32_t fd, uint32_t ip);
 } SPoolInfo;
 
-ttpool_h taosOpenTcpThreadPool(SPoolInfo *pInfo);
-void     taosCloseTcpThreadPool(ttpool_h);
-void *   taosAllocateTcpConn(void *, void *ahandle, int32_t connFd);
-void     taosFreeTcpConn(void *);
+void *syncOpenTcpThreadPool(SPoolInfo *pInfo);
+void  syncCloseTcpThreadPool(void *);
+void *syncAllocateTcpConn(void *, void *ahandle, int32_t connFd);
+void  syncFreeTcpConn(void *);
 
 #ifdef __cplusplus
 }
diff --git a/src/sync/src/tarbitrator.c b/src/sync/src/syncArbitrator.c
similarity index 90%
rename from src/sync/src/tarbitrator.c
rename to src/sync/src/syncArbitrator.c
index 4016042de2135f732dfeb2bbc3b0fdc65b1b63f6..971fac26aa02d27211da88aa9e7b6412b539ef16 100644
--- a/src/sync/src/tarbitrator.c
+++ b/src/sync/src/syncArbitrator.c
@@ -22,17 +22,17 @@
 #include "tsocket.h"
 #include "tglobal.h"
 #include "taoserror.h"
-#include "taosTcpPool.h"
 #include "twal.h"
 #include "tsync.h"
 #include "syncInt.h"
+#include "syncTcp.h"
 
-static void     arbSignalHandler(int32_t signum, siginfo_t *sigInfo, void *context);
-static void     arbProcessIncommingConnection(int32_t connFd, uint32_t sourceIp);
-static void     arbProcessBrokenLink(void *param);
-static int32_t  arbProcessPeerMsg(void *param, void *buffer);
-static tsem_t   tsArbSem;
-static ttpool_h tsArbTcpPool;
+static void    arbSignalHandler(int32_t signum, siginfo_t *sigInfo, void *context);
+static void    arbProcessIncommingConnection(int32_t connFd, uint32_t sourceIp);
+static void    arbProcessBrokenLink(void *param);
+static int32_t arbProcessPeerMsg(void *param, void *buffer);
+static tsem_t  tsArbSem;
+static void *  tsArbTcpPool;
 
 typedef struct {
   char    id[TSDB_EP_LEN + 24];
@@ -90,7 +90,7 @@ int32_t main(int32_t argc, char *argv[]) {
   info.processBrokenLink = arbProcessBrokenLink;
   info.processIncomingMsg = arbProcessPeerMsg;
   info.processIncomingConn = arbProcessIncommingConnection;
-  tsArbTcpPool = taosOpenTcpThreadPool(&info);
+  tsArbTcpPool = syncOpenTcpThreadPool(&info);
 
   if (tsArbTcpPool == NULL) {
     sDebug("failed to open TCP thread pool, exit...");
@@ -101,8 +101,8 @@ int32_t main(int32_t argc, char *argv[]) {
 
   tsem_wait(&tsArbSem);
 
-  taosCloseTcpThreadPool(tsArbTcpPool);
-  sInfo("TAOS arbitrator is shut down\n");
+  syncCloseTcpThreadPool(tsArbTcpPool);
+  sInfo("TAOS arbitrator is shut down");
   closelog();
 
   return 0;
@@ -138,7 +138,7 @@ static void arbProcessIncommingConnection(int32_t connFd, uint32_t sourceIp) {
 
   sDebug("%s, arbitrator request is accepted", pNode->id);
   pNode->nodeFd = connFd;
-  pNode->pConn = taosAllocateTcpConn(tsArbTcpPool, pNode, connFd);
+  pNode->pConn = syncAllocateTcpConn(tsArbTcpPool, pNode, connFd);
 
   return;
 }
diff --git a/src/sync/src/syncMain.c b/src/sync/src/syncMain.c
index aae5dab3cdd5d394307dbbc8c5c4b0040a05d4a7..847dbc2f5dd63ed1daa763eb0f2280522acf64fb 100644
--- a/src/sync/src/syncMain.c
+++ b/src/sync/src/syncMain.c
@@ -23,10 +23,10 @@
 #include "tsocket.h"
 #include "tglobal.h"
 #include "taoserror.h"
-#include "taosTcpPool.h"
 #include "tqueue.h"
 #include "twal.h"
 #include "tsync.h"
+#include "syncTcp.h"
 #include "syncInt.h"
 
 // global configurable
@@ -39,10 +39,10 @@ int32_t tsSyncTimer = 1;
 int32_t tsSyncNum;  // number of sync in process in whole system
 char    tsNodeFqdn[TSDB_FQDN_LEN];
 
-static ttpool_h tsTcpPool;
-static void *   tsSyncTmrCtrl = NULL;
-static void *   tsVgIdHash;
-static int32_t  tsSyncRefId = -1;
+static void *  tsTcpPool;
+static void *  tsSyncTmrCtrl = NULL;
+static void *  tsVgIdHash;
+static int32_t tsSyncRefId = -1;
 
 // local functions
 static void    syncProcessSyncRequest(char *pMsg, SSyncPeer *pPeer);
@@ -117,7 +117,7 @@ int32_t syncInit() {
   info.processIncomingMsg = syncProcessPeerMsg;
   info.processIncomingConn = syncProcessIncommingConnection;
 
-  tsTcpPool = taosOpenTcpThreadPool(&info);
+  tsTcpPool = syncOpenTcpThreadPool(&info);
   if (tsTcpPool == NULL) {
     sError("failed to init tcpPool");
     return -1;
@@ -126,7 +126,7 @@ int32_t syncInit() {
   tsSyncTmrCtrl = taosTmrInit(1000, 50, 10000, "SYNC");
   if (tsSyncTmrCtrl == NULL) {
     sError("failed to init tmrCtrl");
-    taosCloseTcpThreadPool(tsTcpPool);
+    syncCloseTcpThreadPool(tsTcpPool);
     tsTcpPool = NULL;
     return -1;
   }
@@ -135,7 +135,7 @@ int32_t syncInit() {
   if (tsVgIdHash == NULL) {
     sError("failed to init tsVgIdHash");
     taosTmrCleanUp(tsSyncTmrCtrl);
-    taosCloseTcpThreadPool(tsTcpPool);
+    syncCloseTcpThreadPool(tsTcpPool);
     tsTcpPool = NULL;
     tsSyncTmrCtrl = NULL;
     return -1;
@@ -155,7 +155,7 @@ int32_t syncInit() {
 
 void syncCleanUp() {
   if (tsTcpPool) {
-    taosCloseTcpThreadPool(tsTcpPool);
+    syncCloseTcpThreadPool(tsTcpPool);
     tsTcpPool = NULL;
   }
 
@@ -509,7 +509,7 @@ static void syncClosePeerConn(SSyncPeer *pPeer) {
   taosClose(pPeer->syncFd);
   if (pPeer->peerFd >= 0) {
     pPeer->peerFd = -1;
-    taosFreeTcpConn(pPeer->pConn);
+    syncFreeTcpConn(pPeer->pConn);
   }
 }
 
@@ -1065,7 +1065,7 @@ static void syncSetupPeerConnection(SSyncPeer *pPeer) {
     sDebug("%s, connection to peer server is setup, pfd:%d sfd:%d tranId:%u", pPeer->id, connFd, pPeer->syncFd, firstPkt.tranId);
     pPeer->peerFd = connFd;
     pPeer->role = TAOS_SYNC_ROLE_UNSYNCED;
-    pPeer->pConn = taosAllocateTcpConn(tsTcpPool, pPeer, connFd);
+    pPeer->pConn = syncAllocateTcpConn(tsTcpPool, pPeer, connFd);
     syncAddPeerRef(pPeer);
   } else {
     sDebug("%s, failed to setup peer connection to server since %s, try later", pPeer->id, strerror(errno));
@@ -1159,7 +1159,7 @@ static void syncProcessIncommingConnection(int32_t connFd, uint32_t sourceIp) {
       sDebug("%s, TCP connection is up, pfd:%d sfd:%d, old pfd:%d", pPeer->id, connFd, pPeer->syncFd, pPeer->peerFd);
       syncClosePeerConn(pPeer);
       pPeer->peerFd = connFd;
-      pPeer->pConn = taosAllocateTcpConn(tsTcpPool, pPeer, connFd);
+      pPeer->pConn = syncAllocateTcpConn(tsTcpPool, pPeer, connFd);
       syncAddPeerRef(pPeer);
       sDebug("%s, ready to exchange data", pPeer->id);
       syncSendPeersStatusMsgToPeer(pPeer, 1, SYNC_STATUS_EXCHANGE_DATA, syncGenTranId());
diff --git a/src/sync/src/taosTcpPool.c b/src/sync/src/syncTcp.c
similarity index 89%
rename from src/sync/src/taosTcpPool.c
rename to src/sync/src/syncTcp.c
index eb05cf7c6f8d8d9a068b60c54f0ae1426e62c429..7bfdc4e440ee886065a4cd1b8f59d09e09556a47 100644
--- a/src/sync/src/taosTcpPool.c
+++ b/src/sync/src/syncTcp.c
@@ -19,10 +19,10 @@
 #include "tutil.h"
 #include "tsocket.h"
 #include "taoserror.h"
-#include "taosTcpPool.h"
 #include "twal.h"
 #include "tsync.h"
 #include "syncInt.h"
+#include "syncTcp.h"
 
 typedef struct SThreadObj {
   pthread_t thread;
@@ -47,12 +47,12 @@ typedef struct {
   int32_t     closedByApp;
 } SConnObj;
 
-static void *taosAcceptPeerTcpConnection(void *argv);
-static void *taosProcessTcpData(void *param);
-static void  taosStopPoolThread(SThreadObj *pThread);
-static SThreadObj *taosGetTcpThread(SPoolObj *pPool);
+static void *syncAcceptPeerTcpConnection(void *argv);
+static void *syncProcessTcpData(void *param);
+static void  syncStopPoolThread(SThreadObj *pThread);
+static SThreadObj *syncGetTcpThread(SPoolObj *pPool);
 
-void *taosOpenTcpThreadPool(SPoolInfo *pInfo) {
+void *syncOpenTcpThreadPool(SPoolInfo *pInfo) {
   pthread_attr_t thattr;
 
   SPoolObj *pPool = calloc(sizeof(SPoolObj), 1);
@@ -80,7 +80,7 @@ void *taosOpenTcpThreadPool(SPoolInfo *pInfo) {
 
   pthread_attr_init(&thattr);
   pthread_attr_setdetachstate(&thattr, PTHREAD_CREATE_JOINABLE);
-  if (pthread_create(&(pPool->thread), &thattr, (void *)taosAcceptPeerTcpConnection, pPool) != 0) {
+  if (pthread_create(&(pPool->thread), &thattr, (void *)syncAcceptPeerTcpConnection, pPool) != 0) {
     sError("failed to create accept thread for TCP server since %s", strerror(errno));
     close(pPool->acceptFd);
     tfree(pPool->pThread);
@@ -94,7 +94,7 @@ void *taosOpenTcpThreadPool(SPoolInfo *pInfo) {
   return pPool;
 }
 
-void taosCloseTcpThreadPool(void *param) {
+void syncCloseTcpThreadPool(void *param) {
   SPoolObj *  pPool = param;
   SThreadObj *pThread;
 
@@ -103,7 +103,7 @@ void taosCloseTcpThreadPool(void *param) {
 
   for (int32_t i = 0; i < pPool->info.numOfThreads; ++i) {
     pThread = pPool->pThread[i];
-    if (pThread) taosStopPoolThread(pThread);
+    if (pThread) syncStopPoolThread(pThread);
   }
 
   sDebug("%p TCP pool is closed", pPool);
@@ -112,7 +112,7 @@ void taosCloseTcpThreadPool(void *param) {
   tfree(pPool);
 }
 
-void *taosAllocateTcpConn(void *param, void *pPeer, int32_t connFd) {
+void *syncAllocateTcpConn(void *param, void *pPeer, int32_t connFd) {
   struct epoll_event event;
   SPoolObj *pPool = param;
 
@@ -122,7 +122,7 @@ void *taosAllocateTcpConn(void *param, void *pPeer, int32_t connFd) {
     return NULL;
   }
 
-  SThreadObj *pThread = taosGetTcpThread(pPool);
+  SThreadObj *pThread = syncGetTcpThread(pPool);
   if (pThread == NULL) {
     tfree(pConn);
     return NULL;
@@ -149,7 +149,7 @@ void *taosAllocateTcpConn(void *param, void *pPeer, int32_t connFd) {
   return pConn;
 }
 
-void taosFreeTcpConn(void *param) {
+void syncFreeTcpConn(void *param) {
   SConnObj *  pConn = param;
   SThreadObj *pThread = pConn->pThread;
 
@@ -175,7 +175,7 @@ static void taosProcessBrokenLink(SConnObj *pConn) {
 
 #define maxEvents 10
 
-static void *taosProcessTcpData(void *param) {
+static void *syncProcessTcpData(void *param) {
   SThreadObj *pThread = (SThreadObj *)param;
   SPoolObj *  pPool = pThread->pPool;
   SPoolInfo * pInfo = &pPool->info;
@@ -222,7 +222,7 @@ static void *taosProcessTcpData(void *param) {
 
       if (pConn->closedByApp == 0) {
         if ((*pInfo->processIncomingMsg)(pConn->ahandle, buffer) < 0) {
-          taosFreeTcpConn(pConn);
+          syncFreeTcpConn(pConn);
           continue;
         }
       }
@@ -239,7 +239,7 @@ static void *taosProcessTcpData(void *param) {
   return NULL;
 }
 
-static void *taosAcceptPeerTcpConnection(void *argv) {
+static void *syncAcceptPeerTcpConnection(void *argv) {
   SPoolObj * pPool = (SPoolObj *)argv;
   SPoolInfo *pInfo = &pPool->info;
 
@@ -268,7 +268,7 @@ static void *taosAcceptPeerTcpConnection(void *argv) {
   return NULL;
 }
 
-static SThreadObj *taosGetTcpThread(SPoolObj *pPool) {
+static SThreadObj *syncGetTcpThread(SPoolObj *pPool) {
   SThreadObj *pThread = pPool->pThread[pPool->nextId];
 
   if (pThread) return pThread;
@@ -286,7 +286,7 @@ static SThreadObj *taosGetTcpThread(SPoolObj *pPool) {
   pthread_attr_t thattr;
   pthread_attr_init(&thattr);
   pthread_attr_setdetachstate(&thattr, PTHREAD_CREATE_JOINABLE);
-  int32_t ret = pthread_create(&(pThread->thread), &thattr, (void *)taosProcessTcpData, pThread);
+  int32_t ret = pthread_create(&(pThread->thread), &thattr, (void *)syncProcessTcpData, pThread);
   pthread_attr_destroy(&thattr);
 
   if (ret != 0) {
@@ -303,7 +303,7 @@ static SThreadObj *taosGetTcpThread(SPoolObj *pPool) {
   return pThread;
 }
 
-static void taosStopPoolThread(SThreadObj *pThread) {
+static void syncStopPoolThread(SThreadObj *pThread) {
   pthread_t thread = pThread->thread;
   if (!taosCheckPthreadValid(thread)) {
     return;