make tdb work with meta

source/dnode/vnode/src/meta/metaCommit.c

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "meta.h"
-
-int metaCommit(SMeta *pMeta) {
-  // TODO
-  return 0;
-}
\ No newline at end of file

source/dnode/vnode/src/meta/metaTDBImpl.c

@@ -167,6 +167,8 @@ int metaOpenDB(SMeta *pMeta) {
     return -1;
   }
 
+  tdbBegin(pMetaDb->pEnv, NULL);
+
   pMeta->pDB = pMetaDb;
   return 0;
 }
@@ -701,3 +703,8 @@ static void *metaDecodeTbInfo(void *buf, STbCfg *pTbCfg) {
   }
   return buf;
 }
+
+int metaCommit(SMeta *pMeta) {
+  tdbCommit(pMeta->pDB->pEnv, NULL);
+  return 0;
+}
\ No newline at end of file