sma not support multiple replicas

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

@@ -504,6 +504,11 @@ static void mndDestroySmaObj(SSmaObj *pSmaObj) {
 
 static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCreate, SDbObj *pDb, SStbObj *pStb,
                             const char *streamName) {
+  if (pDb->cfg.replications > 1) {
+    terrno = TSDB_CODE_MND_INVALID_SMA_OPTION;
+    mError("sma:%s, failed to create since not support multiple replicas", pCreate->name);
+    return -1;
+  }
   SSmaObj smaObj = {0};
   memcpy(smaObj.name, pCreate->name, TSDB_TABLE_FNAME_LEN);
   memcpy(smaObj.stb, pStb->name, TSDB_TABLE_FNAME_LEN);