add checkpoint

source/dnode/vnode/src/tq/tqStreamStateSnap.c

@@ -45,7 +45,7 @@ int32_t streamStateSnapReaderOpen(STQ* pTq, int64_t sver, int64_t ever, SStreamS
   pReader->ever = ever;
 
   SStreamSnapReader* pSnapReader = NULL;
-  sprintf(tdir, "%s%s%s", pTq->path, TD_DIRSEP, VNODE_TQ_STREAM);
+  sprintf(tdir, "%s%s%s%s%s", pTq->path, TD_DIRSEP, VNODE_TQ_STREAM, TD_DIRSEP, "checkpoints");
   streamSnapReaderOpen(pTq, sver, ever, tdir, &pSnapReader);
 
   pReader->pReaderImpl = pSnapReader;

source/dnode/vnode/src/tq/tqStreamTaskSnap.c

@@ -117,10 +117,10 @@ NextTbl:
       tdbTbcClose(pReader->pCur);
 
       pReader->pos += 1;
-      code = tdbTbcOpen(taosArrayGetP(pReader->tdbTbList, pReader->pos), &pReader->pCur, NULL);
+      pPair = taosArrayGet(pReader->tdbTbList, pReader->pos);
+      code = tdbTbcOpen(pPair->tbl, &pReader->pCur, NULL);
       tdbTbcMoveToFirst(pReader->pCur);
 
-      pPair = taosArrayGet(pReader->tdbTbList, pReader->pos);
       goto NextTbl;
     }
   }
@@ -141,8 +141,6 @@ NextTbl:
 
   tqInfo("vgId:%d, vnode stream-task snapshot read data vLen:%d", TD_VID(pReader->pTq->pVnode), vLen);
 
-  return code;
-_exit:
   return code;
 _err:
   tqError("vgId:%d, vnode stream-task snapshot read data failed since %s", TD_VID(pReader->pTq->pVnode),