diff --git a/source/libs/transport/inc/transComm.h b/source/libs/transport/inc/transComm.h
index e44a4ebac8..e62ca7d69a 100644
--- a/source/libs/transport/inc/transComm.h
+++ b/source/libs/transport/inc/transComm.h
@@ -302,8 +302,8 @@ int  transClearBuffer(SConnBuffer* buf);
 int  transDestroyBuffer(SConnBuffer* buf);
 int  transAllocBuffer(SConnBuffer* connBuf, uv_buf_t* uvBuf);
 bool transReadComplete(SConnBuffer* connBuf);
-int  transResetBuffer(SConnBuffer* connBuf);
-int  transDumpFromBuffer(SConnBuffer* connBuf, char** buf);
+int  transResetBuffer(SConnBuffer* connBuf, int8_t resetBuf);
+int  transDumpFromBuffer(SConnBuffer* connBuf, char** buf, int8_t resetBuf);
 
 int transSetConnOption(uv_tcp_t* stream, int keepalive);
 
diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index bfae9a7111..d0fb5cbfdb 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -382,13 +382,18 @@ void cliHandleResp(SCliConn* conn) {
 
   STransMsgHead* pHead = NULL;
 
-  int32_t msgLen = transDumpFromBuffer(&conn->readBuf, (char**)&pHead);
+  int8_t  resetBuf = conn->status == ConnAcquire ? 0 : 1;
+  int32_t msgLen = transDumpFromBuffer(&conn->readBuf, (char**)&pHead, resetBuf);
   if (msgLen <= 0) {
     taosMemoryFree(pHead);
     tDebug("%s conn %p recv invalid packet ", CONN_GET_INST_LABEL(conn), conn);
     return;
   }
 
+  if (resetBuf == 0) {
+    tTrace("%s conn %p not reset read buf", transLabel(pTransInst), conn);
+  }
+
   if (transDecompressMsg((char**)&pHead, msgLen) < 0) {
     tDebug("%s conn %p recv invalid packet, failed to decompress", CONN_GET_INST_LABEL(conn), conn);
   }
diff --git a/source/libs/transport/src/transComm.c b/source/libs/transport/src/transComm.c
index 6584814053..e894d73c59 100644
--- a/source/libs/transport/src/transComm.c
+++ b/source/libs/transport/src/transComm.c
@@ -126,7 +126,7 @@ int transClearBuffer(SConnBuffer* buf) {
   return 0;
 }
 
-int transDumpFromBuffer(SConnBuffer* connBuf, char** buf) {
+int transDumpFromBuffer(SConnBuffer* connBuf, char** buf, int8_t resetBuf) {
   static const int HEADSIZE = sizeof(STransMsgHead);
 
   SConnBuffer* p = connBuf;
@@ -137,7 +137,7 @@ int transDumpFromBuffer(SConnBuffer* connBuf, char** buf) {
   if (total >= HEADSIZE && !p->invalid) {
     *buf = taosMemoryCalloc(1, total);
     memcpy(*buf, p->buf, total);
-    if (transResetBuffer(connBuf) < 0) {
+    if (transResetBuffer(connBuf, resetBuf) < 0) {
       return -1;
     }
   } else {
@@ -146,7 +146,7 @@ int transDumpFromBuffer(SConnBuffer* connBuf, char** buf) {
   return total;
 }
 
-int transResetBuffer(SConnBuffer* connBuf) {
+int transResetBuffer(SConnBuffer* connBuf, int8_t resetBuf) {
   SConnBuffer* p = connBuf;
   if (p->total < p->len) {
     int left = p->len - p->total;
@@ -159,8 +159,10 @@ int transResetBuffer(SConnBuffer* connBuf) {
     p->total = 0;
     p->len = 0;
     if (p->cap > BUFFER_CAP) {
-      p->cap = BUFFER_CAP;
-      p->buf = taosMemoryRealloc(p->buf, p->cap);
+      if (resetBuf) {
+        p->cap = BUFFER_CAP;
+        p->buf = taosMemoryRealloc(p->buf, p->cap);
+      }
     }
   } else {
     ASSERTS(0, "invalid read from sock buf");
diff --git a/source/libs/transport/src/transSvr.c b/source/libs/transport/src/transSvr.c
index 21ad5be869..04f6ac8c95 100644
--- a/source/libs/transport/src/transSvr.c
+++ b/source/libs/transport/src/transSvr.c
@@ -342,11 +342,15 @@ static bool uvHandleReq(SSvrConn* pConn) {
 
   STransMsgHead* pHead = NULL;
 
-  int msgLen = transDumpFromBuffer(&pConn->readBuf, (char**)&pHead);
+  int8_t resetBuf = pConn->status == ConnAcquire ? 0 : 1;
+  int    msgLen = transDumpFromBuffer(&pConn->readBuf, (char**)&pHead, resetBuf);
   if (msgLen <= 0) {
     tError("%s conn %p read invalid packet", transLabel(pTransInst), pConn);
     return false;
   }
+  if (resetBuf == 0) {
+    tTrace("%s conn %p not reset read buf", transLabel(pTransInst), pConn);
+  }
 
   if (transDecompressMsg((char**)&pHead, msgLen) < 0) {
     tError("%s conn %p recv invalid packet, failed to decompress", transLabel(pTransInst), pConn);
@@ -676,7 +680,8 @@ static FORCE_INLINE void destroySmsg(SSvrMsg* smsg) {
   taosMemoryFree(smsg);
 }
 static FORCE_INLINE void destroySmsgWrapper(void* smsg, void* param) { destroySmsg((SSvrMsg*)smsg); }
-static void              destroyAllConn(SWorkThrd* pThrd) {
+
+static void destroyAllConn(SWorkThrd* pThrd) {
   tTrace("thread %p destroy all conn ", pThrd);
   while (!QUEUE_IS_EMPTY(&pThrd->conn)) {
     queue* h = QUEUE_HEAD(&pThrd->conn);