diff --git a/include/dnode/vnode/tsdb/tsdb.h b/include/dnode/vnode/tsdb/tsdb.h
index 67e33510cd..c19152de44 100644
--- a/include/dnode/vnode/tsdb/tsdb.h
+++ b/include/dnode/vnode/tsdb/tsdb.h
@@ -22,16 +22,38 @@
 extern "C" {
 #endif
 
+typedef struct SDataStatis {
+  int16_t colId;
+  int64_t sum;
+  int64_t max;
+  int64_t min;
+  int16_t maxIndex;
+  int16_t minIndex;
+  int16_t numOfNull;
+} SDataStatis;
+
+typedef struct STable {
+  int32_t   tid;
+  uint64_t  uid;
+  STSchema *pSchema;
+} STable;
+
+#define TABLE_TID(t) (t)->tid
+#define TABLE_UID(t) (t)->uid
+
 // TYPES EXPOSED
 typedef struct STsdb STsdb;
 
 typedef struct STsdbCfg {
   int8_t   precision;
   uint64_t lruCacheSize;
-  uint32_t keep;
-  uint32_t keep1;
-  uint32_t keep2;
   int32_t  daysPerFile;
+  int32_t  minRowsPerFileBlock;
+  int32_t  maxRowsPerFileBlock;
+  int32_t  keep;
+  int32_t  keep1;
+  int32_t  keep2;
+  int8_t   update;
 } STsdbCfg;
 
 // STsdb
diff --git a/source/dnode/vnode/tsdb/CMakeLists.txt b/source/dnode/vnode/tsdb/CMakeLists.txt
index 30e9d70f12..b11a846500 100644
--- a/source/dnode/vnode/tsdb/CMakeLists.txt
+++ b/source/dnode/vnode/tsdb/CMakeLists.txt
@@ -10,6 +10,9 @@ else(0)
         "src/tsdbMemTable.c"
         "src/tsdbOptions.c"
         "src/tsdbWrite.c"
+        "src/tsdbReadImpl.c"
+        "src/tsdbFile.c"
+        # "src/tsdbFS.c"
     )
 endif(0)
 
@@ -25,4 +28,5 @@ target_link_libraries(
     PUBLIC util
     PUBLIC common
     PUBLIC tkv
+    PUBLIC tfs
 )
\ No newline at end of file
diff --git a/source/dnode/vnode/tsdb/inc/tsdbCommit.h b/source/dnode/vnode/tsdb/inc/tsdbCommit.h
index 82ba1c9dff..a29296a686 100644
--- a/source/dnode/vnode/tsdb/inc/tsdbCommit.h
+++ b/source/dnode/vnode/tsdb/inc/tsdbCommit.h
@@ -16,7 +16,6 @@
 #ifndef _TD_TSDB_COMMIT_H_
 #define _TD_TSDB_COMMIT_H_
 
-#if 0
 typedef struct {
   int   minFid;
   int   midFid;
@@ -30,6 +29,7 @@ typedef struct {
   int64_t  size;
 } SKVRecord;
 
+#if 0
 #define TSDB_DEFAULT_BLOCK_ROWS(maxRows) ((maxRows)*4 / 5)
 
 void  tsdbGetRtnSnap(STsdbRepo *pRepo, SRtn *pRtn);
diff --git a/source/dnode/vnode/tsdb/inc/tsdbDef.h b/source/dnode/vnode/tsdb/inc/tsdbDef.h
index cd3386c503..236e2b2d35 100644
--- a/source/dnode/vnode/tsdb/inc/tsdbDef.h
+++ b/source/dnode/vnode/tsdb/inc/tsdbDef.h
@@ -17,6 +17,7 @@
 #define _TD_TSDB_DEF_H_
 
 #include "mallocator.h"
+#include "tcompression.h"
 #include "tglobal.h"
 #include "thash.h"
 #include "tlist.h"
@@ -25,9 +26,14 @@
 #include "ttime.h"
 
 #include "tsdb.h"
+#include "tsdbCommit.h"
+// #include "tsdbFS.h"
+#include "tsdbFile.h"
 #include "tsdbLog.h"
 #include "tsdbMemTable.h"
+#include "tsdbMemory.h"
 #include "tsdbOptions.h"
+#include "tsdbReadImpl.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -39,10 +45,14 @@ struct STsdb {
   STsdbCfg              config;
   STsdbMemTable *       mem;
   STsdbMemTable *       imem;
+  SRtn                  rtn;
   SMemAllocatorFactory *pmaf;
+  // STsdbFS               fs;
 };
 
-#define REPO_ID(r) (r)->vgId
+#define REPO_ID(r) 0
+#define REPO_CFG(r) (&(r)->config)
+// #define REPO_FS(r) (&(r)->fs)
 
 #ifdef __cplusplus
 }
diff --git a/source/dnode/vnode/tsdb/inc/tsdbFS.h b/source/dnode/vnode/tsdb/inc/tsdbFS.h
index 0320756783..dfd34deb84 100644
--- a/source/dnode/vnode/tsdb/inc/tsdbFS.h
+++ b/source/dnode/vnode/tsdb/inc/tsdbFS.h
@@ -16,7 +16,7 @@
 #ifndef _TD_TSDB_FS_H_
 #define _TD_TSDB_FS_H_
 
-#if 0
+#include "tsdbFile.h"
 
 #define TSDB_FS_VERSION 0
 
@@ -39,19 +39,17 @@ typedef struct {
 // ==================
 typedef struct {
   STsdbFSMeta meta;  // FS meta
-  SMFile*     pmf;   // meta file pointer
-  SMFile      mf;    // meta file
-  SArray*     df;    // data file array
+  SArray *    df;    // data file array
 } SFSStatus;
 
 typedef struct {
   pthread_rwlock_t lock;
 
-  SFSStatus* cstatus;         // current status
-  SHashObj*  metaCache;       // meta cache
-  SHashObj*  metaCacheComp;   // meta cache for compact
+  SFSStatus *cstatus;        // current status
+  SHashObj * metaCache;      // meta cache
+  SHashObj * metaCacheComp;  // meta cache for compact
   bool       intxn;
-  SFSStatus* nstatus;  // new status
+  SFSStatus *nstatus;  // new status
 } STsdbFS;
 
 #define FS_CURRENT_STATUS(pfs) ((pfs)->cstatus)
@@ -63,10 +61,10 @@ typedef struct {
 typedef struct {
   int        direction;
   uint64_t   version;  // current FS version
-  STsdbFS*   pfs;
+  STsdbFS *  pfs;
   int        index;  // used to position next fset when version the same
   int        fid;    // used to seek when version is changed
-  SDFileSet* pSet;
+  SDFileSet *pSet;
 } SFSIter;
 
 #define TSDB_FS_ITER_FORWARD TSDB_ORDER_ASC
@@ -74,21 +72,21 @@ typedef struct {
 
 STsdbFS *tsdbNewFS(STsdbCfg *pCfg);
 void *   tsdbFreeFS(STsdbFS *pfs);
-int      tsdbOpenFS(STsdbRepo *pRepo);
-void     tsdbCloseFS(STsdbRepo *pRepo);
-void     tsdbStartFSTxn(STsdbRepo *pRepo, int64_t pointsAdd, int64_t storageAdd);
-int      tsdbEndFSTxn(STsdbRepo *pRepo);
+int      tsdbOpenFS(STsdb *pRepo);
+void     tsdbCloseFS(STsdb *pRepo);
+void     tsdbStartFSTxn(STsdb *pRepo, int64_t pointsAdd, int64_t storageAdd);
+int      tsdbEndFSTxn(STsdb *pRepo);
 int      tsdbEndFSTxnWithError(STsdbFS *pfs);
 void     tsdbUpdateFSTxnMeta(STsdbFS *pfs, STsdbFSMeta *pMeta);
-void     tsdbUpdateMFile(STsdbFS *pfs, const SMFile *pMFile);
+// void     tsdbUpdateMFile(STsdbFS *pfs, const SMFile *pMFile);
 int      tsdbUpdateDFileSet(STsdbFS *pfs, const SDFileSet *pSet);
 
 void       tsdbFSIterInit(SFSIter *pIter, STsdbFS *pfs, int direction);
 void       tsdbFSIterSeek(SFSIter *pIter, int fid);
 SDFileSet *tsdbFSIterNext(SFSIter *pIter);
-int        tsdbLoadMetaCache(STsdbRepo *pRepo, bool recoverMeta);
+int        tsdbLoadMetaCache(STsdb *pRepo, bool recoverMeta);
 
-static FORCE_INLINE int tsdbRLockFS(STsdbFS* pFs) {
+static FORCE_INLINE int tsdbRLockFS(STsdbFS *pFs) {
   int code = pthread_rwlock_rdlock(&(pFs->lock));
   if (code != 0) {
     terrno = TAOS_SYSTEM_ERROR(code);
@@ -97,7 +95,7 @@ static FORCE_INLINE int tsdbRLockFS(STsdbFS* pFs) {
   return 0;
 }
 
-static FORCE_INLINE int tsdbWLockFS(STsdbFS* pFs) {
+static FORCE_INLINE int tsdbWLockFS(STsdbFS *pFs) {
   int code = pthread_rwlock_wrlock(&(pFs->lock));
   if (code != 0) {
     terrno = TAOS_SYSTEM_ERROR(code);
@@ -106,7 +104,7 @@ static FORCE_INLINE int tsdbWLockFS(STsdbFS* pFs) {
   return 0;
 }
 
-static FORCE_INLINE int tsdbUnLockFS(STsdbFS* pFs) {
+static FORCE_INLINE int tsdbUnLockFS(STsdbFS *pFs) {
   int code = pthread_rwlock_unlock(&(pFs->lock));
   if (code != 0) {
     terrno = TAOS_SYSTEM_ERROR(code);
@@ -115,6 +113,4 @@ static FORCE_INLINE int tsdbUnLockFS(STsdbFS* pFs) {
   return 0;
 }
 
-#endif
-
 #endif /* _TD_TSDB_FS_H_ */
diff --git a/source/dnode/vnode/tsdb/inc/tsdbFile.h b/source/dnode/vnode/tsdb/inc/tsdbFile.h
index 73a7de0249..fb21ef56a7 100644
--- a/source/dnode/vnode/tsdb/inc/tsdbFile.h
+++ b/source/dnode/vnode/tsdb/inc/tsdbFile.h
@@ -16,7 +16,8 @@
 #ifndef _TS_TSDB_FILE_H_
 #define _TS_TSDB_FILE_H_
 
-#if 0
+#include "tchecksum.h"
+#include "tfs.h"
 
 #define TSDB_FILE_HEAD_SIZE 512
 #define TSDB_FILE_DELIMITER 0xF00AFA0F
@@ -34,7 +35,7 @@
 #define TSDB_FILE_SET_CLOSED(f) (TSDB_FILE_FD(f) = -1)
 #define TSDB_FILE_LEVEL(tf) TFILE_LEVEL(TSDB_FILE_F(tf))
 #define TSDB_FILE_ID(tf) TFILE_ID(TSDB_FILE_F(tf))
-#define TSDB_FILE_FSYNC(tf) taosFsync(TSDB_FILE_FD(tf))
+#define TSDB_FILE_FSYNC(tf) taosFsyncFile(TSDB_FILE_FD(tf))
 #define TSDB_FILE_STATE(tf) ((tf)->state)
 #define TSDB_FILE_SET_STATE(tf, s) ((tf)->state = (s))
 #define TSDB_FILE_IS_OK(tf) (TSDB_FILE_STATE(tf) == TSDB_FILE_STATE_OK)
@@ -42,6 +43,7 @@
 
 typedef enum { TSDB_FILE_HEAD = 0, TSDB_FILE_DATA, TSDB_FILE_LAST, TSDB_FILE_MAX, TSDB_FILE_META } TSDB_FILE_T;
 
+#if 0
 // =============== SMFile
 typedef struct {
   int64_t  size;
@@ -68,7 +70,7 @@ int   tsdbApplyMFileChange(SMFile* from, SMFile* to);
 int   tsdbCreateMFile(SMFile* pMFile, bool updateHeader);
 int   tsdbUpdateMFileHeader(SMFile* pMFile);
 int   tsdbLoadMFileHeader(SMFile* pMFile, SMFInfo* pInfo);
-int   tsdbScanAndTryFixMFile(STsdbRepo* pRepo);
+int   tsdbScanAndTryFixMFile(STsdb* pRepo);
 int   tsdbEncodeMFInfo(void** buf, SMFInfo* pInfo);
 void* tsdbDecodeMFInfo(void* buf, SMFInfo* pInfo);
 
@@ -96,7 +98,7 @@ static FORCE_INLINE void tsdbCloseMFile(SMFile* pMFile) {
 static FORCE_INLINE int64_t tsdbSeekMFile(SMFile* pMFile, int64_t offset, int whence) {
   ASSERT(TSDB_FILE_OPENED(pMFile));
 
-  int64_t loffset = taosLSeek(TSDB_FILE_FD(pMFile), offset, whence);
+  int64_t loffset = taosLSeekFile(TSDB_FILE_FD(pMFile), offset, whence);
   if (loffset < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -108,7 +110,7 @@ static FORCE_INLINE int64_t tsdbSeekMFile(SMFile* pMFile, int64_t offset, int wh
 static FORCE_INLINE int64_t tsdbWriteMFile(SMFile* pMFile, void* buf, int64_t nbyte) {
   ASSERT(TSDB_FILE_OPENED(pMFile));
 
-  int64_t nwrite = taosWrite(pMFile->fd, buf, nbyte);
+  int64_t nwrite = taosWriteFile(pMFile->fd, buf, nbyte);
   if (nwrite < nbyte) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -150,7 +152,7 @@ static FORCE_INLINE int tsdbRemoveMFile(SMFile* pMFile) { return tfsremove(TSDB_
 static FORCE_INLINE int64_t tsdbReadMFile(SMFile* pMFile, void* buf, int64_t nbyte) {
   ASSERT(TSDB_FILE_OPENED(pMFile));
 
-  int64_t nread = taosRead(pMFile->fd, buf, nbyte);
+  int64_t nread = taosReadFile(pMFile->fd, buf, nbyte);
   if (nread < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -159,6 +161,8 @@ static FORCE_INLINE int64_t tsdbReadMFile(SMFile* pMFile, void* buf, int64_t nby
   return nread;
 }
 
+#endif
+
 // =============== SDFile
 typedef struct {
   uint32_t magic;
@@ -210,7 +214,7 @@ static FORCE_INLINE void tsdbCloseDFile(SDFile* pDFile) {
 static FORCE_INLINE int64_t tsdbSeekDFile(SDFile* pDFile, int64_t offset, int whence) {
   ASSERT(TSDB_FILE_OPENED(pDFile));
 
-  int64_t loffset = taosLSeek(TSDB_FILE_FD(pDFile), offset, whence);
+  int64_t loffset = taosLSeekFile(TSDB_FILE_FD(pDFile), offset, whence);
   if (loffset < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -222,7 +226,7 @@ static FORCE_INLINE int64_t tsdbSeekDFile(SDFile* pDFile, int64_t offset, int wh
 static FORCE_INLINE int64_t tsdbWriteDFile(SDFile* pDFile, void* buf, int64_t nbyte) {
   ASSERT(TSDB_FILE_OPENED(pDFile));
 
-  int64_t nwrite = taosWrite(pDFile->fd, buf, nbyte);
+  int64_t nwrite = taosWriteFile(pDFile->fd, buf, nbyte);
   if (nwrite < nbyte) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -264,7 +268,7 @@ static FORCE_INLINE int tsdbRemoveDFile(SDFile* pDFile) { return tfsremove(TSDB_
 static FORCE_INLINE int64_t tsdbReadDFile(SDFile* pDFile, void* buf, int64_t nbyte) {
   ASSERT(TSDB_FILE_OPENED(pDFile));
 
-  int64_t nread = taosRead(pDFile->fd, buf, nbyte);
+  int64_t nread = taosReadFile(pDFile->fd, buf, nbyte);
   if (nread < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -316,7 +320,7 @@ void* tsdbDecodeDFileSetEx(void* buf, SDFileSet* pSet);
 int   tsdbApplyDFileSetChange(SDFileSet* from, SDFileSet* to);
 int   tsdbCreateDFileSet(SDFileSet* pSet, bool updateHeader);
 int   tsdbUpdateDFileSetHeader(SDFileSet* pSet);
-int   tsdbScanAndTryFixDFileSet(STsdbRepo *pRepo, SDFileSet* pSet);
+int   tsdbScanAndTryFixDFileSet(STsdb* pRepo, SDFileSet* pSet);
 
 static FORCE_INLINE void tsdbCloseDFileSet(SDFileSet* pSet) {
   for (TSDB_FILE_T ftype = 0; ftype < TSDB_FILE_MAX; ftype++) {
@@ -366,5 +370,4 @@ static FORCE_INLINE bool tsdbFSetIsOk(SDFileSet* pSet) {
   return true;
 }
 
-#endif
 #endif /* _TS_TSDB_FILE_H_ */
\ No newline at end of file
diff --git a/source/dnode/vnode/tsdb/inc/tsdbMemory.h b/source/dnode/vnode/tsdb/inc/tsdbMemory.h
new file mode 100644
index 0000000000..1fc4cd9e52
--- /dev/null
+++ b/source/dnode/vnode/tsdb/inc/tsdbMemory.h
@@ -0,0 +1,74 @@
+/*
+ * 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/>.
+ */
+
+#ifndef _TD_TSDB_MEMORY_H_
+#define _TD_TSDB_MEMORY_H_
+
+static void * taosTMalloc(size_t size);
+static void * taosTCalloc(size_t nmemb, size_t size);
+static void * taosTRealloc(void *ptr, size_t size);
+static void * taosTZfree(void *ptr);
+static size_t taosTSizeof(void *ptr);
+static void   taosTMemset(void *ptr, int c);
+
+static FORCE_INLINE void *taosTMalloc(size_t size) {
+  if (size <= 0) return NULL;
+
+  void *ret = malloc(size + sizeof(size_t));
+  if (ret == NULL) return NULL;
+
+  *(size_t *)ret = size;
+
+  return (void *)((char *)ret + sizeof(size_t));
+}
+
+static FORCE_INLINE void *taosTCalloc(size_t nmemb, size_t size) {
+  size_t tsize = nmemb * size;
+  void * ret = taosTMalloc(tsize);
+  if (ret == NULL) return NULL;
+
+  taosTMemset(ret, 0);
+  return ret;
+}
+
+static FORCE_INLINE size_t taosTSizeof(void *ptr) { return (ptr) ? (*(size_t *)((char *)ptr - sizeof(size_t))) : 0; }
+
+static FORCE_INLINE void taosTMemset(void *ptr, int c) { memset(ptr, c, taosTSizeof(ptr)); }
+
+static FORCE_INLINE void * taosTRealloc(void *ptr, size_t size) {
+  if (ptr == NULL) return taosTMalloc(size);
+
+  if (size <= taosTSizeof(ptr)) return ptr;
+
+  void * tptr = (void *)((char *)ptr - sizeof(size_t));
+  size_t tsize = size + sizeof(size_t);
+  void* tptr1 = realloc(tptr, tsize);
+  if (tptr1 == NULL) return NULL;
+  tptr = tptr1;
+
+  *(size_t *)tptr = size;
+
+  return (void *)((char *)tptr + sizeof(size_t));
+}
+
+static FORCE_INLINE void* taosTZfree(void* ptr) {
+  if (ptr) {
+    free((void*)((char*)ptr - sizeof(size_t)));
+  }
+  return NULL;
+}
+
+
+#endif /* _TD_TSDB_MEMORY_H_ */
\ No newline at end of file
diff --git a/source/dnode/vnode/tsdb/inc/tsdbReadImpl.h b/source/dnode/vnode/tsdb/inc/tsdbReadImpl.h
index a9bd76c2b1..3fb235e7dd 100644
--- a/source/dnode/vnode/tsdb/inc/tsdbReadImpl.h
+++ b/source/dnode/vnode/tsdb/inc/tsdbReadImpl.h
@@ -15,14 +15,14 @@
 
 #ifndef _TD_TSDB_READ_IMPL_H_
 #define _TD_TSDB_READ_IMPL_H_
-#if 0
 
+#include "os.h"
 #include "tfs.h"
 #include "tsdb.h"
-#include "os.h"
 #include "tsdbFile.h"
 #include "tskiplist.h"
-#include "tsdbMeta.h"
+#include "tsdbMemory.h"
+#include "common.h"
 
 typedef struct SReadH SReadH;
 
@@ -91,7 +91,7 @@ typedef struct {
 } SBlockData;
 
 struct SReadH {
-  STsdbRepo * pRepo;
+  STsdb *     pRepo;
   SDFileSet   rSet;     // FSET to read
   SArray *    aBlkIdx;  // SBlockIdx array
   STable *    pTable;   // table to read
@@ -116,7 +116,7 @@ struct SReadH {
 
 #define TSDB_BLOCK_STATIS_SIZE(ncols) (sizeof(SBlockData) + sizeof(SBlockCol) * (ncols) + sizeof(TSCKSUM))
 
-int   tsdbInitReadH(SReadH *pReadh, STsdbRepo *pRepo);
+int   tsdbInitReadH(SReadH *pReadh, STsdb *pRepo);
 void  tsdbDestroyReadH(SReadH *pReadh);
 int   tsdbSetAndOpenReadFSet(SReadH *pReadh, SDFileSet *pSet);
 void  tsdbCloseAndUnsetFSet(SReadH *pReadh);
@@ -151,6 +151,4 @@ static FORCE_INLINE int tsdbMakeRoom(void **ppBuf, size_t size) {
   return 0;
 }
 
-#endif
-
 #endif /*_TD_TSDB_READ_IMPL_H_*/
diff --git a/source/dnode/vnode/tsdb/src/tsdbFS.c b/source/dnode/vnode/tsdb/src/tsdbFS.c
index a40e67ca59..210a272b13 100644
--- a/source/dnode/vnode/tsdb/src/tsdbFS.c
+++ b/source/dnode/vnode/tsdb/src/tsdbFS.c
@@ -13,9 +13,9 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "os.h"
-#include "tsdbint.h"
 #include <regex.h>
+#include "os.h"
+#include "tsdbDef.h"
 
 typedef enum { TSDB_TXN_TEMP_FILE = 0, TSDB_TXN_CURR_FILE } TSDB_TXN_FILE_T;
 static const char *tsdbTxnFname[] = {"current.t", "current"};
@@ -26,16 +26,16 @@ static void tsdbResetFSStatus(SFSStatus *pStatus);
 static int  tsdbSaveFSStatus(SFSStatus *pStatus, int vid);
 static void tsdbApplyFSTxnOnDisk(SFSStatus *pFrom, SFSStatus *pTo);
 static void tsdbGetTxnFname(int repoid, TSDB_TXN_FILE_T ftype, char fname[]);
-static int  tsdbOpenFSFromCurrent(STsdbRepo *pRepo);
-static int  tsdbScanAndTryFixFS(STsdbRepo *pRepo);
-static int  tsdbScanRootDir(STsdbRepo *pRepo);
-static int  tsdbScanDataDir(STsdbRepo *pRepo);
+static int  tsdbOpenFSFromCurrent(STsdb *pRepo);
+static int  tsdbScanAndTryFixFS(STsdb *pRepo);
+static int  tsdbScanRootDir(STsdb *pRepo);
+static int  tsdbScanDataDir(STsdb *pRepo);
 static bool tsdbIsTFileInFS(STsdbFS *pfs, const TFILE *pf);
-static int  tsdbRestoreCurrent(STsdbRepo *pRepo);
+static int  tsdbRestoreCurrent(STsdb *pRepo);
 static int  tsdbComparTFILE(const void *arg1, const void *arg2);
-static void tsdbScanAndTryFixDFilesHeader(STsdbRepo *pRepo, int32_t *nExpired);
-static int  tsdbProcessExpiredFS(STsdbRepo *pRepo);
-static int  tsdbCreateMeta(STsdbRepo *pRepo);
+static void tsdbScanAndTryFixDFilesHeader(STsdb *pRepo, int32_t *nExpired);
+static int  tsdbProcessExpiredFS(STsdb *pRepo);
+static int  tsdbCreateMeta(STsdb *pRepo);
 
 // For backward compatibility
 // ================== CURRENT file header info
@@ -240,7 +240,7 @@ void *tsdbFreeFS(STsdbFS *pfs) {
   return NULL;
 }
 
-static int tsdbProcessExpiredFS(STsdbRepo *pRepo) {
+static int tsdbProcessExpiredFS(STsdb *pRepo) {
   tsdbStartFSTxn(pRepo, 0, 0);
   if (tsdbCreateMeta(pRepo) < 0) {
     tsdbError("vgId:%d failed to create meta since %s", REPO_ID(pRepo), tstrerror(terrno));
@@ -259,7 +259,7 @@ static int tsdbProcessExpiredFS(STsdbRepo *pRepo) {
   return 0;
 }
 
-static int tsdbCreateMeta(STsdbRepo *pRepo) {
+static int tsdbCreateMeta(STsdb *pRepo) {
   STsdbFS *pfs = REPO_FS(pRepo);
   SMFile * pOMFile = pfs->cstatus->pmf;
   SMFile   mf;
@@ -296,7 +296,7 @@ static int tsdbCreateMeta(STsdbRepo *pRepo) {
   return 0;
 }
 
-int tsdbOpenFS(STsdbRepo *pRepo) {
+int tsdbOpenFS(STsdb *pRepo) {
   STsdbFS *pfs = REPO_FS(pRepo);
   char     current[TSDB_FILENAME_LEN] = "\0";
   int      nExpired = 0;
@@ -338,12 +338,12 @@ int tsdbOpenFS(STsdbRepo *pRepo) {
   return 0;
 }
 
-void tsdbCloseFS(STsdbRepo *pRepo) {
+void tsdbCloseFS(STsdb *pRepo) {
   // Do nothing
 }
 
 // Start a new transaction to modify the file system
-void tsdbStartFSTxn(STsdbRepo *pRepo, int64_t pointsAdd, int64_t storageAdd) {
+void tsdbStartFSTxn(STsdb *pRepo, int64_t pointsAdd, int64_t storageAdd) {
   STsdbFS *pfs = REPO_FS(pRepo);
   ASSERT(pfs->intxn == false);
 
@@ -361,7 +361,7 @@ void tsdbStartFSTxn(STsdbRepo *pRepo, int64_t pointsAdd, int64_t storageAdd) {
 
 void tsdbUpdateFSTxnMeta(STsdbFS *pfs, STsdbFSMeta *pMeta) { pfs->nstatus->meta = *pMeta; }
 
-int tsdbEndFSTxn(STsdbRepo *pRepo) {
+int tsdbEndFSTxn(STsdb *pRepo) {
   STsdbFS *pfs = REPO_FS(pRepo);
   ASSERT(FS_IN_TXN(pfs));
   SFSStatus *pStatus;
@@ -372,7 +372,7 @@ int tsdbEndFSTxn(STsdbRepo *pRepo) {
     return -1;
   }
 
-  // Make new 
+  // Make new
   tsdbWLockFS(pfs);
   pStatus = pfs->cstatus;
   pfs->cstatus = pfs->nstatus;
@@ -642,7 +642,7 @@ static void tsdbGetTxnFname(int repoid, TSDB_TXN_FILE_T ftype, char fname[]) {
   snprintf(fname, TSDB_FILENAME_LEN, "%s/vnode/vnode%d/tsdb/%s", TFS_PRIMARY_PATH(), repoid, tsdbTxnFname[ftype]);
 }
 
-static int tsdbOpenFSFromCurrent(STsdbRepo *pRepo) {
+static int tsdbOpenFSFromCurrent(STsdb *pRepo) {
   STsdbFS * pfs = REPO_FS(pRepo);
   int       fd = -1;
   void *    buffer = NULL;
@@ -737,7 +737,7 @@ _err:
 }
 
 // Scan and try to fix incorrect files
-static int tsdbScanAndTryFixFS(STsdbRepo *pRepo) {
+static int tsdbScanAndTryFixFS(STsdb *pRepo) {
   STsdbFS *  pfs = REPO_FS(pRepo);
   SFSStatus *pStatus = pfs->cstatus;
 
@@ -763,7 +763,7 @@ static int tsdbScanAndTryFixFS(STsdbRepo *pRepo) {
   return 0;
 }
 
-int tsdbLoadMetaCache(STsdbRepo *pRepo, bool recoverMeta) {
+int tsdbLoadMetaCache(STsdb *pRepo, bool recoverMeta) {
   char      tbuf[128];
   STsdbFS * pfs = REPO_FS(pRepo);
   SMFile    mf;
@@ -899,7 +899,7 @@ int tsdbLoadMetaCache(STsdbRepo *pRepo, bool recoverMeta) {
   return 0;
 }
 
-static int tsdbScanRootDir(STsdbRepo *pRepo) {
+static int tsdbScanRootDir(STsdb *pRepo) {
   char         rootDir[TSDB_FILENAME_LEN];
   char         bname[TSDB_FILENAME_LEN];
   STsdbFS *    pfs = REPO_FS(pRepo);
@@ -933,7 +933,7 @@ static int tsdbScanRootDir(STsdbRepo *pRepo) {
   return 0;
 }
 
-static int tsdbScanDataDir(STsdbRepo *pRepo) {
+static int tsdbScanDataDir(STsdb *pRepo) {
   char         dataDir[TSDB_FILENAME_LEN];
   char         bname[TSDB_FILENAME_LEN];
   STsdbFS *    pfs = REPO_FS(pRepo);
@@ -977,7 +977,7 @@ static bool tsdbIsTFileInFS(STsdbFS *pfs, const TFILE *pf) {
   return false;
 }
 
-static int tsdbRestoreMeta(STsdbRepo *pRepo) {
+static int tsdbRestoreMeta(STsdb *pRepo) {
   char         rootDir[TSDB_FILENAME_LEN];
   char         bname[TSDB_FILENAME_LEN];
   TDIR *       tdir = NULL;
@@ -1098,7 +1098,7 @@ static int tsdbRestoreMeta(STsdbRepo *pRepo) {
   return 0;
 }
 
-static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
+static int tsdbRestoreDFileSet(STsdb *pRepo) {
   char         dataDir[TSDB_FILENAME_LEN];
   char         bname[TSDB_FILENAME_LEN];
   TDIR *       tdir = NULL;
@@ -1220,9 +1220,10 @@ static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
       }
 
       pDFile->f = *pf;
-      
+
       if (tsdbOpenDFile(pDFile, O_RDONLY) < 0) {
-        tsdbError("vgId:%d failed to open DFile %s since %s", REPO_ID(pRepo), TSDB_FILE_FULL_NAME(pDFile), tstrerror(terrno));
+        tsdbError("vgId:%d failed to open DFile %s since %s", REPO_ID(pRepo), TSDB_FILE_FULL_NAME(pDFile),
+                  tstrerror(terrno));
         taosArrayDestroy(fArray);
         return -1;
       }
@@ -1266,7 +1267,7 @@ static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
   return 0;
 }
 
-static int tsdbRestoreCurrent(STsdbRepo *pRepo) {
+static int tsdbRestoreCurrent(STsdb *pRepo) {
   // Loop to recover mfile
   if (tsdbRestoreMeta(pRepo) < 0) {
     tsdbError("vgId:%d failed to restore current since %s", REPO_ID(pRepo), tstrerror(terrno));
@@ -1317,7 +1318,7 @@ static int tsdbComparTFILE(const void *arg1, const void *arg2) {
   }
 }
 
-static void tsdbScanAndTryFixDFilesHeader(STsdbRepo *pRepo, int32_t *nExpired) {
+static void tsdbScanAndTryFixDFilesHeader(STsdb *pRepo, int32_t *nExpired) {
   STsdbFS *  pfs = REPO_FS(pRepo);
   SFSStatus *pStatus = pfs->cstatus;
   SDFInfo    info;
diff --git a/source/dnode/vnode/tsdb/src/tsdbFile.c b/source/dnode/vnode/tsdb/src/tsdbFile.c
index 0f13b6108f..a1c1b57b44 100644
--- a/source/dnode/vnode/tsdb/src/tsdbFile.c
+++ b/source/dnode/vnode/tsdb/src/tsdbFile.c
@@ -13,22 +13,23 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "tsdbint.h"
+#include "tsdbDef.h"
 
 static const char *TSDB_FNAME_SUFFIX[] = {
-    "head",     // TSDB_FILE_HEAD
-    "data",     // TSDB_FILE_DATA
-    "last",     // TSDB_FILE_LAST
-    "",         // TSDB_FILE_MAX
-    "meta",     // TSDB_FILE_META
+    "head",  // TSDB_FILE_HEAD
+    "data",  // TSDB_FILE_DATA
+    "last",  // TSDB_FILE_LAST
+    "",      // TSDB_FILE_MAX
+    "meta",  // TSDB_FILE_META
 };
 
-static void  tsdbGetFilename(int vid, int fid, uint32_t ver, TSDB_FILE_T ftype, char *fname);
-static int   tsdbRollBackMFile(SMFile *pMFile);
+static void tsdbGetFilename(int vid, int fid, uint32_t ver, TSDB_FILE_T ftype, char *fname);
+// static int   tsdbRollBackMFile(SMFile *pMFile);
 static int   tsdbEncodeDFInfo(void **buf, SDFInfo *pInfo);
 static void *tsdbDecodeDFInfo(void *buf, SDFInfo *pInfo);
 static int   tsdbRollBackDFile(SDFile *pDFile);
 
+#if 0
 // ============== SMFile
 void tsdbInitMFile(SMFile *pMFile, SDiskID did, int vid, uint32_t ver) {
   char fname[TSDB_FILENAME_LEN];
@@ -185,7 +186,7 @@ int tsdbLoadMFileHeader(SMFile *pMFile, SMFInfo *pInfo) {
   return 0;
 }
 
-int tsdbScanAndTryFixMFile(STsdbRepo *pRepo) {
+int tsdbScanAndTryFixMFile(STsdb *pRepo) {
   SMFile *    pMFile = pRepo->fs->cstatus->pmf;
   struct stat mfstat;
   SMFile      mf;
@@ -291,6 +292,8 @@ static int tsdbRollBackMFile(SMFile *pMFile) {
   return 0;
 }
 
+#endif
+
 // ============== Operations on SDFile
 void tsdbInitDFile(SDFile *pDFile, SDiskID did, int vid, int fid, uint32_t ver, TSDB_FILE_T ftype) {
   char fname[TSDB_FILENAME_LEN];
@@ -397,7 +400,7 @@ int tsdbUpdateDFileHeader(SDFile *pDFile) {
   }
 
   void *ptr = buf;
-  taosEncodeFixedU32(&ptr, TSDB_FS_VERSION);
+  taosEncodeFixedU32(&ptr, 0);
   tsdbEncodeDFInfo(&ptr, &(pDFile->info));
 
   taosCalcChecksumAppend(0, (uint8_t *)buf, TSDB_FILE_HEAD_SIZE);
@@ -433,7 +436,7 @@ int tsdbLoadDFileHeader(SDFile *pDFile, SDFInfo *pInfo) {
   return 0;
 }
 
-static int tsdbScanAndTryFixDFile(STsdbRepo *pRepo, SDFile *pDFile) {
+static int tsdbScanAndTryFixDFile(STsdb *pRepo, SDFile *pDFile) {
   struct stat dfstat;
   SDFile      df;
 
@@ -442,7 +445,7 @@ static int tsdbScanAndTryFixDFile(STsdbRepo *pRepo, SDFile *pDFile) {
   if (access(TSDB_FILE_FULL_NAME(pDFile), F_OK) != 0) {
     tsdbError("vgId:%d data file %s not exit, report to upper layer to fix it", REPO_ID(pRepo),
               TSDB_FILE_FULL_NAME(pDFile));
-    pRepo->state |= TSDB_STATE_BAD_DATA;
+    // pRepo->state |= TSDB_STATE_BAD_DATA;
     TSDB_FILE_SET_STATE(pDFile, TSDB_FILE_STATE_BAD);
     return 0;
   }
@@ -457,7 +460,7 @@ static int tsdbScanAndTryFixDFile(STsdbRepo *pRepo, SDFile *pDFile) {
       return -1;
     }
 
-    if (taosFtruncate(df.fd, df.info.size) < 0) {
+    if (taosFtruncateFile(df.fd, df.info.size) < 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       tsdbCloseDFile(&df);
       return -1;
@@ -474,7 +477,7 @@ static int tsdbScanAndTryFixDFile(STsdbRepo *pRepo, SDFile *pDFile) {
   } else if (pDFile->info.size > dfstat.st_size) {
     tsdbError("vgId:%d data file %s has wrong size %" PRId64 " expected %" PRId64 ", report to upper layer to fix it",
               REPO_ID(pRepo), TSDB_FILE_FULL_NAME(pDFile), dfstat.st_size, pDFile->info.size);
-    pRepo->state |= TSDB_STATE_BAD_DATA;
+    // pRepo->state |= TSDB_STATE_BAD_DATA;
     TSDB_FILE_SET_STATE(pDFile, TSDB_FILE_STATE_BAD);
     terrno = TSDB_CODE_TDB_FILE_CORRUPTED;
     return 0;
@@ -538,7 +541,7 @@ static int tsdbRollBackDFile(SDFile *pDFile) {
     return -1;
   }
 
-  if (taosFtruncate(TSDB_FILE_FD(&df), pDFile->info.size) < 0) {
+  if (taosFtruncateFile(TSDB_FILE_FD(&df), pDFile->info.size) < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     tsdbCloseDFile(&df);
     return -1;
@@ -651,7 +654,7 @@ int tsdbUpdateDFileSetHeader(SDFileSet *pSet) {
   return 0;
 }
 
-int tsdbScanAndTryFixDFileSet(STsdbRepo *pRepo, SDFileSet *pSet) {
+int tsdbScanAndTryFixDFileSet(STsdb *pRepo, SDFileSet *pSet) {
   for (TSDB_FILE_T ftype = 0; ftype < TSDB_FILE_MAX; ftype++) {
     if (tsdbScanAndTryFixDFile(pRepo, TSDB_DFILE_IN_SET(pSet, ftype)) < 0) {
       return -1;
diff --git a/source/dnode/vnode/tsdb/src/tsdbReadImpl.c b/source/dnode/vnode/tsdb/src/tsdbReadImpl.c
index 74d41cce19..1a2b213031 100644
--- a/source/dnode/vnode/tsdb/src/tsdbReadImpl.c
+++ b/source/dnode/vnode/tsdb/src/tsdbReadImpl.c
@@ -13,7 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "tsdbint.h"
+#include "tsdbDef.h"
 
 #define TSDB_KEY_COL_OFFSET 0
 
@@ -25,8 +25,9 @@ static int  tsdbCheckAndDecodeColumnData(SDataCol *pDataCol, void *content, int3
 static int  tsdbLoadBlockDataColsImpl(SReadH *pReadh, SBlock *pBlock, SDataCols *pDataCols, int16_t *colIds,
                                       int numOfColIds);
 static int  tsdbLoadColData(SReadH *pReadh, SDFile *pDFile, SBlock *pBlock, SBlockCol *pBlockCol, SDataCol *pDataCol);
+static STSchema *tsdbGetTableSchemaImpl(STable *pTable, bool lock, bool copy, int32_t version) { return NULL; }
 
-int tsdbInitReadH(SReadH *pReadh, STsdbRepo *pRepo) {
+int tsdbInitReadH(SReadH *pReadh, STsdb *pRepo) {
   ASSERT(pReadh != NULL && pRepo != NULL);
 
   STsdbCfg *pCfg = REPO_CFG(pRepo);
@@ -259,7 +260,9 @@ int tsdbLoadBlockData(SReadH *pReadh, SBlock *pBlock, SBlockInfo *pBlkInfo) {
   for (int i = 1; i < pBlock->numOfSubBlocks; i++) {
     iBlock++;
     if (tsdbLoadBlockDataImpl(pReadh, iBlock, pReadh->pDCols[1]) < 0) return -1;
-    if (tdMergeDataCols(pReadh->pDCols[0], pReadh->pDCols[1], pReadh->pDCols[1]->numOfRows, NULL, update != TD_ROW_PARTIAL_UPDATE) < 0) return -1;
+    if (tdMergeDataCols(pReadh->pDCols[0], pReadh->pDCols[1], pReadh->pDCols[1]->numOfRows, NULL,
+                        update != TD_ROW_PARTIAL_UPDATE) < 0)
+      return -1;
   }
 
   ASSERT(pReadh->pDCols[0]->numOfRows == pBlock->numOfRows);
@@ -286,7 +289,9 @@ int tsdbLoadBlockDataCols(SReadH *pReadh, SBlock *pBlock, SBlockInfo *pBlkInfo,
   for (int i = 1; i < pBlock->numOfSubBlocks; i++) {
     iBlock++;
     if (tsdbLoadBlockDataColsImpl(pReadh, iBlock, pReadh->pDCols[1], colIds, numOfColsIds) < 0) return -1;
-    if (tdMergeDataCols(pReadh->pDCols[0], pReadh->pDCols[1], pReadh->pDCols[1]->numOfRows, NULL, update != TD_ROW_PARTIAL_UPDATE) < 0) return -1;
+    if (tdMergeDataCols(pReadh->pDCols[0], pReadh->pDCols[1], pReadh->pDCols[1]->numOfRows, NULL,
+                        update != TD_ROW_PARTIAL_UPDATE) < 0)
+      return -1;
   }
 
   ASSERT(pReadh->pDCols[0]->numOfRows == pBlock->numOfRows);
@@ -524,7 +529,7 @@ static int tsdbCheckAndDecodeColumnData(SDataCol *pDataCol, void *content, int32
   if (comp) {
     // Need to decompress
     int tlen = (*(tDataTypes[pDataCol->type].decompFunc))(content, len - sizeof(TSCKSUM), numOfRows, pDataCol->pData,
-                                                             pDataCol->spaceSize, comp, buffer, bufferSize);
+                                                          pDataCol->spaceSize, comp, buffer, bufferSize);
     if (tlen <= 0) {
       tsdbError("Failed to decompress column, file corrupted, len:%d comp:%d numOfRows:%d maxPoints:%d bufferSize:%d",
                 len, comp, numOfRows, maxPoints, bufferSize);
@@ -624,9 +629,9 @@ static int tsdbLoadBlockDataColsImpl(SReadH *pReadh, SBlock *pBlock, SDataCols *
 static int tsdbLoadColData(SReadH *pReadh, SDFile *pDFile, SBlock *pBlock, SBlockCol *pBlockCol, SDataCol *pDataCol) {
   ASSERT(pDataCol->colId == pBlockCol->colId);
 
-  STsdbRepo *pRepo = TSDB_READ_REPO(pReadh);
-  STsdbCfg * pCfg = REPO_CFG(pRepo);
-  int        tsize = pDataCol->bytes * pBlock->numOfRows + COMP_OVERFLOW_BYTES;
+  STsdb *   pRepo = TSDB_READ_REPO(pReadh);
+  STsdbCfg *pCfg = REPO_CFG(pRepo);
+  int       tsize = pDataCol->bytes * pBlock->numOfRows + COMP_OVERFLOW_BYTES;
 
   if (tsdbMakeRoom((void **)(&TSDB_READ_BUF(pReadh)), pBlockCol->len) < 0) return -1;
   if (tsdbMakeRoom((void **)(&TSDB_READ_COMP_BUF(pReadh)), tsize) < 0) return -1;
@@ -662,3 +667,4 @@ static int tsdbLoadColData(SReadH *pReadh, SDFile *pDFile, SBlock *pBlock, SBloc
 
   return 0;
 }
+