fix: change orReplace logic in mnode

source/dnode/mnode/impl/src/mndFunc.c

@@ -231,12 +231,11 @@ static int32_t mndCreateFunc(SMnode *pMnode, SRpcMsg *pReq, SCreateFuncReq *pCre
   
   if(pCreate->orReplace == 1){
     SFuncObj *oldFunc = mndAcquireFunc(pMnode, pCreate->name);
-    if(oldFunc == NULL){
-      goto _OVER;
-    }
+    if(oldFunc != NULL){
       func.funcVersion = oldFunc->funcVersion + 1;
       mndReleaseFunc(pMnode, oldFunc);
     }
+  }
 
   pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_NOTHING, pReq, "create-func");
   if (pTrans == NULL) goto _OVER;
@@ -319,6 +318,9 @@ static int32_t mndProcessCreateFuncReq(SRpcMsg *pReq) {
       mInfo("func:%s, already exist, ignore exist is set", createReq.name);
       code = 0;
       goto _OVER;
+    } else if (createReq.orReplace) {
+      mInfo("func:%s, replace function is set", createReq.name);
+      code = 0;
     } else {
       terrno = TSDB_CODE_MND_FUNC_ALREADY_EXIST;
       goto _OVER;