diff --git a/source/dnode/mnode/impl/src/mndCompact.c b/source/dnode/mnode/impl/src/mndCompact.c
index e8f7202986..33a6ddcc5d 100644
--- a/source/dnode/mnode/impl/src/mndCompact.c
+++ b/source/dnode/mnode/impl/src/mndCompact.c
@@ -348,6 +348,7 @@ static void *mndBuildKillCompactReq(SMnode *pMnode, SVgObj *pVgroup, int32_t *pC
   req.compactId = compactId;
   req.vgId = pVgroup->vgId;
   req.dnodeId = dnodeid;
+  terrno = 0;
 
   mInfo("vgId:%d, build compact vnode config req", pVgroup->vgId);
   int32_t contLen = tSerializeSVKillCompactReq(NULL, 0, &req);
@@ -367,8 +368,10 @@ static void *mndBuildKillCompactReq(SMnode *pMnode, SVgObj *pVgroup, int32_t *pC
   pHead->contLen = htonl(contLen);
   pHead->vgId = htonl(pVgroup->vgId);
 
-  if ((contLen = tSerializeSVKillCompactReq((char *)pReq + sizeof(SMsgHead), contLen, &req)) < 0) {
-    terrno = contLen;
+  mTrace("vgId:%d, build compact vnode config req, contLen:%d", pVgroup->vgId, contLen);
+  int32_t ret = 0;
+  if ((ret = tSerializeSVKillCompactReq((char *)pReq + sizeof(SMsgHead), contLen, &req)) < 0) {
+    terrno = ret;
     return NULL;
   }
   *pContLen = contLen;
@@ -401,6 +404,8 @@ static int32_t mndAddKillCompactAction(SMnode *pMnode, STrans *pTrans, SVgObj *p
   action.contLen = contLen;
   action.msgType = TDMT_VND_KILL_COMPACT;
 
+  mTrace("trans:%d, kill compact msg len:%d", pTrans->id, contLen);
+
   if ((code = mndTransAppendRedoAction(pTrans, &action)) != 0) {
     taosMemoryFree(pReq);
     TAOS_RETURN(code);
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index e82209e03f..6291e0c9c7 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -607,9 +607,9 @@ int32_t vnodeProcessWriteMsg(SVnode *pVnode, SRpcMsg *pMsg, int64_t ver, SRpcMsg
   }
 
   vDebug("vgId:%d, start to process write request %s, index:%" PRId64 ", applied:%" PRId64 ", state.applyTerm:%" PRId64
-         ", conn.applyTerm:%" PRId64,
+         ", conn.applyTerm:%" PRId64 ", contLen:%d",
          TD_VID(pVnode), TMSG_INFO(pMsg->msgType), ver, pVnode->state.applied, pVnode->state.applyTerm,
-         pMsg->info.conn.applyTerm);
+         pMsg->info.conn.applyTerm, pMsg->contLen);
 
   if (!(pVnode->state.applyTerm <= pMsg->info.conn.applyTerm)) {
     return terrno = TSDB_CODE_INTERNAL_ERROR;