diff --git a/packaging/cfg/taos.cfg b/packaging/cfg/taos.cfg
index 1c9674338138e56c95dd0b395417a366f06fdad8..9d61b0df68f3480834fddacd5d701ee0559352e8 100644
--- a/packaging/cfg/taos.cfg
+++ b/packaging/cfg/taos.cfg
@@ -58,6 +58,12 @@
 # The server and client should have the same socket type. Otherwise, connect will fail.
 # sockettype            udp
 
+# The compressed rpc message, option:
+#  -1 (no compression)
+#   0 (all message compressed),
+# > 0 (rpc message body which larger than this value will be compressed)
+# compressMsgSize       -1
+
 # RPC re-try timer, millisecond
 # rpcTimer              300
 
diff --git a/src/system/detail/src/vnodeRead.c b/src/system/detail/src/vnodeRead.c
index 0f9565a3b5d42db5532cea9d9d5411a90faf312b..14b50acf45134c7717fc000f6543c738d765ad35 100644
--- a/src/system/detail/src/vnodeRead.c
+++ b/src/system/detail/src/vnodeRead.c
@@ -483,13 +483,9 @@ void vnodeFreeQInfo(void *param, bool decQueryRef) {
   }
 
   tfree(pQuery->pGroupbyExpr);
-
   dTrace("QInfo:%p vid:%d sid:%d meterId:%s, QInfo is freed", pQInfo, pObj->vnode, pObj->sid, pObj->meterId);
 
-  /*
-   * destory signature, in order to avoid the query process pass the object
-   * safety check
-   */
+  //destroy signature, in order to avoid the query process pass the object safety check
   memset(pQInfo, 0, sizeof(SQInfo));
   tfree(pQInfo);
 }