diff --git a/source/dnode/vnode/CMakeLists.txt b/source/dnode/vnode/CMakeLists.txt
index bd2e4213d5..4b8aa5dfaf 100644
--- a/source/dnode/vnode/CMakeLists.txt
+++ b/source/dnode/vnode/CMakeLists.txt
@@ -30,6 +30,7 @@ target_sources(
 
     # tsdb
     # "src/tsdb/tsdbBDBImpl.c"
+    "src/tsdb/tsdbTDBImpl.c"
     "src/tsdb/tsdbCommit.c"
     "src/tsdb/tsdbCompact.c"
     "src/tsdb/tsdbFile.c"
@@ -40,7 +41,7 @@ target_sources(
     "src/tsdb/tsdbRead.c"
     "src/tsdb/tsdbReadImpl.c"
     "src/tsdb/tsdbScan.c"
-    # "src/tsdb/tsdbSma.c"
+    "src/tsdb/tsdbSma.c"
     "src/tsdb/tsdbWrite.c"
 
     # tq
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 113501a26b..aab835b958 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -357,7 +357,7 @@ STbCfg         *metaGetTbInfoByUid(SMeta *pMeta, tb_uid_t uid);
 STbCfg         *metaGetTbInfoByName(SMeta *pMeta, char *tbname, tb_uid_t *uid);
 SSchemaWrapper *metaGetTableSchema(SMeta *pMeta, tb_uid_t uid, int32_t sver, bool isinline);
 STSchema       *metaGetTbTSchema(SMeta *pMeta, tb_uid_t uid, int32_t sver);
-STSma          *metaGetSmaInfoByIndex(SMeta *pMeta, int64_t indexUid);
+void           *metaGetSmaInfoByIndex(SMeta *pMeta, int64_t indexUid, bool isDecode);
 STSmaWrapper   *metaGetSmaInfoByTable(SMeta *pMeta, tb_uid_t uid);
 SArray         *metaGetSmaTbUids(SMeta *pMeta, bool isDup);
 int             metaGetTbNum(SMeta *pMeta);
@@ -369,8 +369,8 @@ void            metaCloseCtbCurosr(SMCtbCursor *pCtbCur);
 tb_uid_t        metaCtbCursorNext(SMCtbCursor *pCtbCur);
 
 SMSmaCursor *metaOpenSmaCursor(SMeta *pMeta, tb_uid_t uid);
-void         metaCloseSmaCurosr(SMSmaCursor *pSmaCur);
-const char  *metaSmaCursorNext(SMSmaCursor *pSmaCur);
+void         metaCloseSmaCursor(SMSmaCursor *pSmaCur);
+int64_t      metaSmaCursorNext(SMSmaCursor *pSmaCur);
 
 // Options
 void metaOptionsInit(SMetaCfg *pMetaCfg);
diff --git a/source/dnode/vnode/src/inc/tsdbSma.h b/source/dnode/vnode/src/inc/tsdbSma.h
new file mode 100644
index 0000000000..ce03fa7c67
--- /dev/null
+++ b/source/dnode/vnode/src/inc/tsdbSma.h
@@ -0,0 +1,68 @@
+/*
+ * 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_VNODE_TSDB_SMA_H_
+#define _TD_VNODE_TSDB_SMA_H_
+
+#include "tdbInt.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct SSmaKey SSmaKey;
+
+struct SSmaKey {
+  TSKEY   skey;
+  int64_t groupId;
+};
+
+
+typedef struct SDBFile SDBFile;
+
+struct SDBFile {
+  int32_t fid;
+  TDB    *pDB;
+  char   *path;
+};
+
+int32_t tsdbOpenDBEnv(TENV **ppEnv, const char *path);
+int32_t tsdbCloseDBEnv(TENV *pEnv);
+int32_t tsdbOpenDBF(TENV *pEnv, SDBFile *pDBF);
+int32_t tsdbCloseDBF(SDBFile *pDBF);
+int32_t tsdbSaveSmaToDB(SDBFile *pDBF, void *pKey, int32_t keyLen, void *pVal, int32_t valLen, TXN *txn);
+void   *tsdbGetSmaDataByKey(SDBFile *pDBF, const void *pKey, int32_t keyLen, int32_t *valLen);
+
+void  tsdbDestroySmaEnv(SSmaEnv *pSmaEnv);
+void *tsdbFreeSmaEnv(SSmaEnv *pSmaEnv);
+#if 0
+int32_t tsdbGetTSmaStatus(STsdb *pTsdb, STSma *param, void *result);
+int32_t tsdbRemoveTSmaData(STsdb *pTsdb, STSma *param, STimeWindow *pWin);
+#endif
+
+// internal func
+static FORCE_INLINE int32_t tsdbEncodeTSmaKey(int64_t groupId, TSKEY tsKey, void **pData) {
+  int32_t len = 0;
+  len += taosEncodeFixedI64(pData, tsKey);
+  len += taosEncodeFixedI64(pData, groupId);
+  return len;
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_VNODE_TSDB_SMA_H_*/
\ No newline at end of file
diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index 6e1f00f931..29a45723c4 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -220,6 +220,8 @@ void smaHandleRes(void* pVnode, int64_t smaId, const SArray* data);
 
 #include "tq.h"
 
+#include "tsdbSma.h"
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/vnode/src/meta/metaBDBImpl.c b/source/dnode/vnode/src/meta/metaBDBImpl.c
index caa101b5d0..a8270f746d 100644
--- a/source/dnode/vnode/src/meta/metaBDBImpl.c
+++ b/source/dnode/vnode/src/meta/metaBDBImpl.c
@@ -667,7 +667,7 @@ STbCfg *metaGetTbInfoByName(SMeta *pMeta, char *tbname, tb_uid_t *uid) {
   return pTbCfg;
 }
 
-STSma *metaGetSmaInfoByIndex(SMeta *pMeta, int64_t indexUid) {
+void *metaGetSmaInfoByIndex(SMeta *pMeta, int64_t indexUid, bool isDecode) {
   STSma *  pCfg = NULL;
   SMetaDB *pDB = pMeta->pDB;
   DBT      key = {0};
@@ -920,7 +920,7 @@ SMSmaCursor *metaOpenSmaCursor(SMeta *pMeta, tb_uid_t uid) {
   return pCur;
 }
 
-void metaCloseSmaCurosr(SMSmaCursor *pCur) {
+void metaCloseSmaCursor(SMSmaCursor *pCur) {
   if (pCur) {
     if (pCur->pCur) {
       pCur->pCur->close(pCur->pCur);
@@ -930,7 +930,8 @@ void metaCloseSmaCurosr(SMSmaCursor *pCur) {
   }
 }
 
-const char *metaSmaCursorNext(SMSmaCursor *pCur) {
+int64_t metaSmaCursorNext(SMSmaCursor *pCur) {
+#if 0
   DBT skey = {0};
   DBT pkey = {0};
   DBT pval = {0};
@@ -946,6 +947,8 @@ const char *metaSmaCursorNext(SMSmaCursor *pCur) {
   } else {
     return NULL;
   }
+#endif
+  return 0;
 }
 
 STSmaWrapper *metaGetSmaInfoByTable(SMeta *pMeta, tb_uid_t uid) {
@@ -972,7 +975,7 @@ STSmaWrapper *metaGetSmaInfoByTable(SMeta *pMeta, tb_uid_t uid) {
       ++pSW->number;
       STSma *tptr = (STSma *)taosMemoryRealloc(pSW->tSma, pSW->number * sizeof(STSma));
       if (tptr == NULL) {
-        metaCloseSmaCurosr(pCur);
+        metaCloseSmaCursor(pCur);
         tdDestroyTSmaWrapper(pSW);
         taosMemoryFreeClear(pSW);
         return NULL;
@@ -980,7 +983,7 @@ STSmaWrapper *metaGetSmaInfoByTable(SMeta *pMeta, tb_uid_t uid) {
       pSW->tSma = tptr;
       pBuf = pval.data;
       if (tDecodeTSma(pBuf, pSW->tSma + pSW->number - 1) == NULL) {
-        metaCloseSmaCurosr(pCur);
+        metaCloseSmaCursor(pCur);
         tdDestroyTSmaWrapper(pSW);
         taosMemoryFreeClear(pSW);
         return NULL;
@@ -990,8 +993,8 @@ STSmaWrapper *metaGetSmaInfoByTable(SMeta *pMeta, tb_uid_t uid) {
     break;
   }
 
-  metaCloseSmaCurosr(pCur);
-  
+  metaCloseSmaCursor(pCur);
+
   return pSW;
 }
 
@@ -1004,7 +1007,7 @@ SArray *metaGetSmaTbUids(SMeta *pMeta, bool isDup) {
   int      ret;
 
   // TODO: lock?
-  ret = pDB->pCtbIdx->cursor(pDB->pSmaIdx, NULL, &pCur, 0);
+  ret = pDB->pSmaIdx->cursor(pDB->pSmaIdx, NULL, &pCur, 0);
   if (ret != 0) {
     return NULL;
   }
diff --git a/source/dnode/vnode/src/meta/metaTDBImpl.c b/source/dnode/vnode/src/meta/metaTDBImpl.c
index e3acba7eb6..6f218ad72b 100644
--- a/source/dnode/vnode/src/meta/metaTDBImpl.c
+++ b/source/dnode/vnode/src/meta/metaTDBImpl.c
@@ -22,6 +22,8 @@ typedef struct SPoolMem {
   struct SPoolMem *next;
 } SPoolMem;
 
+#define META_TDB_SMA_TEST
+
 static SPoolMem *openPool();
 static void      clearPool(SPoolMem *pPool);
 static void      closePool(SPoolMem *pPool);
@@ -38,6 +40,10 @@ struct SMetaDB {
   TDB *     pNtbIdx;
   TDB *     pCtbIdx;
   SPoolMem *pPool;
+#ifdef META_TDB_SMA_TEST
+  TDB *pSmaDB;
+  TDB *pSmaIdx;
+#endif
 };
 
 typedef struct __attribute__((__packed__)) {
@@ -55,6 +61,11 @@ typedef struct {
   tb_uid_t uid;
 } SCtbIdxKey;
 
+typedef struct {
+  tb_uid_t uid;
+  int64_t  smaUid;
+} SSmaIdxKey;
+
 static int   metaEncodeTbInfo(void **buf, STbCfg *pTbCfg);
 static void *metaDecodeTbInfo(void *buf, STbCfg *pTbCfg);
 static int   metaEncodeSchema(void **buf, SSchemaWrapper *pSW);
@@ -115,6 +126,17 @@ static inline int metaCtbIdxCmpr(const void *arg1, int len1, const void *arg2, i
   return metaUidCmpr(&pKey1->uid, sizeof(tb_uid_t), &pKey2->uid, sizeof(tb_uid_t));
 }
 
+static inline int metaSmaIdxCmpr(const void *arg1, int len1, const void *arg2, int len2) {
+  int         c;
+  SSmaIdxKey *pKey1 = (SSmaIdxKey *)arg1;
+  SSmaIdxKey *pKey2 = (SSmaIdxKey *)arg2;
+
+  c = metaUidCmpr(arg1, sizeof(tb_uid_t), arg2, sizeof(tb_uid_t));
+  if (c) return c;
+
+  return metaUidCmpr(&pKey1->smaUid, sizeof(int64_t), &pKey2->smaUid, sizeof(int64_t));
+}
+
 int metaOpenDB(SMeta *pMeta) {
   SMetaDB *pMetaDb;
   int      ret;
@@ -143,6 +165,15 @@ int metaOpenDB(SMeta *pMeta) {
     return -1;
   }
 
+#ifdef META_TDB_SMA_TEST
+  ret = tdbDbOpen("sma.db", sizeof(int64_t), TDB_VARIANT_LEN, metaUidCmpr, pMetaDb->pEnv, &(pMetaDb->pSmaDB));
+  if (ret < 0) {
+    // TODO
+    ASSERT(0);
+    return -1;
+  }
+#endif
+
   // open schema DB
   ret = tdbDbOpen("schema.db", sizeof(SSchemaDbKey), TDB_VARIANT_LEN, metaSchemaKeyCmpr, pMetaDb->pEnv,
                   &(pMetaDb->pSchemaDB));
@@ -180,6 +211,15 @@ int metaOpenDB(SMeta *pMeta) {
     return -1;
   }
 
+#ifdef META_TDB_SMA_TEST
+  ret = tdbDbOpen("sma.idx", sizeof(SSmaIdxKey), 0, metaSmaIdxCmpr, pMetaDb->pEnv, &(pMetaDb->pSmaIdx));
+  if (ret < 0) {
+    // TODO
+    ASSERT(0);
+    return -1;
+  }
+#endif
+
   pMetaDb->pPool = openPool();
   tdbTxnOpen(&pMetaDb->txn, 0, poolMalloc, poolFree, pMetaDb->pPool, TDB_TXN_WRITE | TDB_TXN_READ_UNCOMMITTED);
   tdbBegin(pMetaDb->pEnv, NULL);
@@ -193,10 +233,16 @@ void metaCloseDB(SMeta *pMeta) {
     tdbCommit(pMeta->pDB->pEnv, &pMeta->pDB->txn);
     tdbTxnClose(&pMeta->pDB->txn);
     clearPool(pMeta->pDB->pPool);
+#ifdef META_TDB_SMA_TEST
+    tdbDbClose(pMeta->pDB->pSmaIdx);
+#endif
     tdbDbClose(pMeta->pDB->pCtbIdx);
     tdbDbClose(pMeta->pDB->pNtbIdx);
     tdbDbClose(pMeta->pDB->pStbIdx);
     tdbDbClose(pMeta->pDB->pNameIdx);
+#ifdef META_TDB_SMA_TEST
+    tdbDbClose(pMeta->pDB->pSmaDB);
+#endif
     tdbDbClose(pMeta->pDB->pSchemaDB);
     tdbDbClose(pMeta->pDB->pTbDB);
     taosMemoryFree(pMeta->pDB);
@@ -491,7 +537,6 @@ char *metaTbCursorNext(SMTbCursor *pTbCur) {
       taosMemoryFree(tbCfg.name);
       taosMemoryFree(tbCfg.stbCfg.pTagSchema);
       continue;
-      ;
     } else if (tbCfg.type == META_CHILD_TABLE) {
       kvRowFree(tbCfg.ctbCfg.pTag);
     }
@@ -566,51 +611,326 @@ int metaGetTbNum(SMeta *pMeta) {
   return 0;
 }
 
+struct SMSmaCursor {
+  TDBC    *pCur;
+  tb_uid_t uid;
+  void    *pKey;
+  void    *pVal;
+  int      kLen;
+  int      vLen;
+};
+
 STSmaWrapper *metaGetSmaInfoByTable(SMeta *pMeta, tb_uid_t uid) {
   // TODO
-  ASSERT(0);
-  return NULL;
+  // ASSERT(0);
+  // return NULL;
+#ifdef META_TDB_SMA_TEST
+  STSmaWrapper *pSW = NULL;
+
+  pSW = taosMemoryCalloc(1, sizeof(*pSW));
+  if (pSW == NULL) {
+    return NULL;
+  }
+
+  SMSmaCursor *pCur = metaOpenSmaCursor(pMeta, uid);
+  if (pCur == NULL) {
+    taosMemoryFree(pSW);
+    return NULL;
+  }
+
+  void       *pBuf = NULL;
+  SSmaIdxKey *pSmaIdxKey = NULL;
+
+  while (true) {
+    // TODO: lock during iterate?
+    if (tdbDbNext(pCur->pCur, &pCur->pKey, &pCur->kLen, NULL, &pCur->vLen) == 0) {
+      pSmaIdxKey = pCur->pKey;
+      ASSERT(pSmaIdxKey != NULL);
+
+      void *pSmaVal = metaGetSmaInfoByIndex(pMeta, pSmaIdxKey->smaUid, false);
+
+      if (pSmaVal == NULL) {
+        tsdbWarn("no tsma exists for indexUid: %" PRIi64, pSmaIdxKey->smaUid);
+        continue;
+      }
+
+
+      ++pSW->number;
+      STSma *tptr = (STSma *)taosMemoryRealloc(pSW->tSma, pSW->number * sizeof(STSma));
+      if (tptr == NULL) {
+        TDB_FREE(pSmaVal);
+        metaCloseSmaCursor(pCur);
+        tdDestroyTSmaWrapper(pSW);
+        taosMemoryFreeClear(pSW);
+        return NULL;
+      }
+      pSW->tSma = tptr;
+      pBuf = pSmaVal;
+      if (tDecodeTSma(pBuf, pSW->tSma + pSW->number - 1) == NULL) {
+        TDB_FREE(pSmaVal);
+        metaCloseSmaCursor(pCur);
+        tdDestroyTSmaWrapper(pSW);
+        taosMemoryFreeClear(pSW);
+        return NULL;
+      }
+      TDB_FREE(pSmaVal);
+      continue;
+    }
+    break;
+  }
+
+  metaCloseSmaCursor(pCur);
+
+  return pSW;
+
+#endif
 }
 
 int metaRemoveSmaFromDb(SMeta *pMeta, int64_t indexUid) {
   // TODO
   ASSERT(0);
+#ifndef META_TDB_SMA_TEST
+  DBT key = {0};
+
+  key.data = (void *)indexName;
+  key.size = strlen(indexName);
+
+  metaDBWLock(pMeta->pDB);
+  // TODO: No guarantee of consistence.
+  // Use transaction or DB->sync() for some guarantee.
+  pMeta->pDB->pSmaDB->del(pMeta->pDB->pSmaDB, NULL, &key, 0);
+  metaDBULock(pMeta->pDB);
+#endif
   return 0;
 }
 
 int metaSaveSmaToDB(SMeta *pMeta, STSma *pSmaCfg) {
   // TODO
-  ASSERT(0);
+  // ASSERT(0);
+
+#ifdef META_TDB_SMA_TEST
+  int32_t ret = 0;
+  SMetaDB *pMetaDb = pMeta->pDB;
+  void   *pBuf = NULL, *qBuf = NULL;
+  void   *key = {0}, *val = {0};
+
+  // save sma info
+  int32_t len = tEncodeTSma(NULL, pSmaCfg);
+  pBuf = taosMemoryCalloc(1, len);
+  if (pBuf == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
+  }
+
+  key = (void *)&pSmaCfg->indexUid;
+  qBuf = pBuf;
+  tEncodeTSma(&qBuf, pSmaCfg);
+  val = pBuf;
+
+  int32_t kLen = sizeof(pSmaCfg->indexUid);
+  int32_t vLen = POINTER_DISTANCE(qBuf, pBuf);
+
+  ret = tdbDbInsert(pMeta->pDB->pSmaDB, key, kLen, val, vLen, &pMetaDb->txn);
+  if (ret < 0) {
+    taosMemoryFreeClear(pBuf);
+    return -1;
+  }
+
+  // add sma idx
+  SSmaIdxKey smaIdxKey;
+  smaIdxKey.uid = pSmaCfg->tableUid;
+  smaIdxKey.smaUid = pSmaCfg->indexUid;
+  key = &smaIdxKey;
+  kLen = sizeof(smaIdxKey);
+  val = NULL;
+  vLen = 0;
+
+  ret = tdbDbInsert(pMeta->pDB->pSmaIdx, key, kLen, val, vLen, &pMetaDb->txn);
+  if (ret < 0) {
+    taosMemoryFreeClear(pBuf);
+    return -1;
+  }
+
+  // release
+  taosMemoryFreeClear(pBuf);
+
+  if (pMeta->pDB->pPool->size > 0) {
+    metaCommit(pMeta);
+  }
+
+#endif
   return 0;
 }
 
-STSma *metaGetSmaInfoByIndex(SMeta *pMeta, int64_t indexUid) {
+void *metaGetSmaInfoByIndex(SMeta *pMeta, int64_t indexUid, bool isDecode) {
   // TODO
-  ASSERT(0);
-  return NULL;
+  // ASSERT(0);
+  // return NULL;
+#ifdef META_TDB_SMA_TEST
+  SMetaDB *pDB = pMeta->pDB;
+  void    *pKey = NULL;
+  void    *pVal = NULL;
+  int      kLen = 0;
+  int      vLen = 0;
+  int      ret = -1;
+
+  // Set key
+  pKey = (void *)&indexUid;
+  kLen = sizeof(indexUid);
+
+  // Query
+  ret = tdbDbGet(pDB->pSmaDB, pKey, kLen, &pVal, &vLen);
+  if (ret != 0 || !pVal) {
+    return NULL;
+  }
+
+  if (!isDecode) {
+    // return raw value
+    return pVal;
+  }
+
+  // Decode
+  STSma *pCfg = (STSma *)taosMemoryCalloc(1, sizeof(STSma));
+  if (pCfg == NULL) {
+    taosMemoryFree(pVal);
+    return NULL;
+  }
+
+  void *pBuf = pVal;
+  if (tDecodeTSma(pBuf, pCfg) == NULL) {
+    tdDestroyTSma(pCfg);
+    taosMemoryFree(pCfg);
+    TDB_FREE(pVal);
+    return NULL;
+  }
+
+  TDB_FREE(pVal);
+  return pCfg;
+#endif
 }
 
-const char *metaSmaCursorNext(SMSmaCursor *pCur) {
+/**
+ * @brief
+ *
+ * @param pMeta
+ * @param uid 0 means iterate all uids.
+ * @return SMSmaCursor*
+ */
+SMSmaCursor *metaOpenSmaCursor(SMeta *pMeta, tb_uid_t uid) {
   // TODO
-  ASSERT(0);
-  return NULL;
+  // ASSERT(0);
+  // return NULL;
+#ifdef META_TDB_SMA_TEST
+  SMSmaCursor *pCur = NULL;
+  SMetaDB     *pDB = pMeta->pDB;
+  int          ret;
+
+  pCur = (SMSmaCursor *)taosMemoryCalloc(1, sizeof(*pCur));
+  if (pCur == NULL) {
+    return NULL;
+  }
+
+  pCur->uid = uid;
+  ret = tdbDbcOpen(pDB->pSmaIdx, &(pCur->pCur));
+  if ((ret != 0) || (pCur->pCur == NULL)) {
+    taosMemoryFree(pCur);
+    return NULL;
+  }
+
+  if (uid != 0) {
+    // TODO: move to the specific uid
+  }
+
+  return pCur;
+#endif
 }
 
-void metaCloseSmaCurosr(SMSmaCursor *pCur) {
+/**
+ * @brief
+ *
+ * @param pCur
+ * @return int64_t smaIndexUid
+ */
+int64_t metaSmaCursorNext(SMSmaCursor *pCur) {
   // TODO
-  ASSERT(0);
+  // ASSERT(0);
+  // return NULL;
+#ifdef META_TDB_SMA_TEST
+  int         ret;
+  void       *pBuf;
+  SSmaIdxKey *smaIdxKey;
+
+  ret = tdbDbNext(pCur->pCur, &pCur->pKey, &pCur->kLen, &pCur->pVal, &pCur->vLen);
+  if (ret < 0) {
+    return 0;
+  }
+  smaIdxKey = pCur->pKey;
+  return smaIdxKey->smaUid;
+#endif
+}
+
+void metaCloseSmaCursor(SMSmaCursor *pCur) {
+  // TODO
+  // ASSERT(0);
+#ifdef META_TDB_SMA_TEST
+  if (pCur) {
+    if (pCur->pCur) {
+      tdbDbcClose(pCur->pCur);
+    }
+
+    taosMemoryFree(pCur);
+  }
+#endif
 }
 
 SArray *metaGetSmaTbUids(SMeta *pMeta, bool isDup) {
   // TODO
   // ASSERT(0); // comment this line to pass CI
-  return NULL;
-}
+  // return NULL:
+#ifdef META_TDB_SMA_TEST
+  SArray  *pUids = NULL;
+  SMetaDB *pDB = pMeta->pDB;
+  void    *pKey;
 
-SMSmaCursor *metaOpenSmaCursor(SMeta *pMeta, tb_uid_t uid) {
-  // TODO
-  ASSERT(0);
-  return NULL;
+  // TODO: lock?
+  SMSmaCursor *pCur = metaOpenSmaCursor(pMeta, 0);
+  if (pCur == NULL) {
+    return NULL;
+  }
+  // TODO: lock?
+
+  SSmaIdxKey *pSmaIdxKey = NULL;
+  tb_uid_t    uid = 0;
+  while (true) {
+    // TODO: lock during iterate?
+    if (tdbDbNext(pCur->pCur, &pCur->pKey, &pCur->kLen, NULL, &pCur->vLen) == 0) {
+      ASSERT(pSmaIdxKey != NULL);
+      pSmaIdxKey = pCur->pKey;
+
+      if (pSmaIdxKey->uid == 0 || pSmaIdxKey->uid == uid) {
+        continue;
+      }
+      uid = pSmaIdxKey->uid;
+
+      if (!pUids) {
+        pUids = taosArrayInit(16, sizeof(tb_uid_t));
+        if (!pUids) {
+          metaCloseSmaCursor(pCur);
+          return NULL;
+        }
+      }
+
+      taosArrayPush(pUids, &uid);
+
+      continue;
+    }
+    break;
+  }
+
+  metaCloseSmaCursor(pCur);
+
+  return pUids;
+#endif
 }
 
 static int metaEncodeSchema(void **buf, SSchemaWrapper *pSW) {
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 0d4acd4594..794427475e 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -82,9 +82,9 @@ int tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t versi
   memcpy(data, msg, msgLen);
 
   if (msgType == TDMT_VND_SUBMIT) {
-    // if (tsdbUpdateSmaWindow(pTq->pVnode->pTsdb, msg) != 0) {
-    //   return -1;
-    // }
+    if (tsdbUpdateSmaWindow(pTq->pVnode->pTsdb, msg) != 0) {
+      return -1;
+    }
   }
 
   SRpcMsg req = {
diff --git a/source/dnode/vnode/src/tsdb/tsdbSma.c b/source/dnode/vnode/src/tsdb/tsdbSma.c
index 07b7d62165..bfdad836f1 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSma.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSma.c
@@ -38,6 +38,29 @@ typedef enum {
   SMA_STORAGE_LEVEL_DFILESET = 1  // use days of TS data       e.g. vnode${N}/tsdb/tsma/sma_index_uid/v2f1906.tsma
 } ESmaStorageLevel;
 
+typedef struct SPoolMem {
+  int64_t          size;
+  struct SPoolMem *prev;
+  struct SPoolMem *next;
+} SPoolMem;
+
+struct SSmaEnv {
+  TdThreadRwlock lock;
+  TXN            txn;
+  SPoolMem      *pPool;
+  SDiskID        did;
+  TENV          *dbEnv;  // TODO: If it's better to put it in smaIndex level?
+  char          *path;   // relative path
+  SSmaStat      *pStat;
+};
+
+#define SMA_ENV_LOCK(env)       ((env)->lock)
+#define SMA_ENV_DID(env)        ((env)->did)
+#define SMA_ENV_ENV(env)        ((env)->dbEnv)
+#define SMA_ENV_PATH(env)       ((env)->path)
+#define SMA_ENV_STAT(env)       ((env)->pStat)
+#define SMA_ENV_STAT_ITEMS(env) ((env)->pStat->smaStatItems)
+
 typedef struct {
   STsdb        *pTsdb;
   SDBFile       dFile;
@@ -104,7 +127,8 @@ static void    tsdbDestroyTSmaWriteH(STSmaWriteH *pSmaH);
 static int32_t tsdbInitTSmaReadH(STSmaReadH *pSmaH, STsdb *pTsdb, int64_t interval, int8_t intervalUnit);
 static int32_t tsdbGetSmaStorageLevel(int64_t interval, int8_t intervalUnit);
 static int32_t tsdbSetRSmaDataFile(STSmaWriteH *pSmaH, int32_t fid);
-static int32_t tsdbInsertTSmaBlocks(STSmaWriteH *pSmaH, void *smaKey, uint32_t keyLen, void *pData, uint32_t dataLen);
+static int32_t tsdbInsertTSmaBlocks(STSmaWriteH *pSmaH, void *smaKey, int32_t keyLen, void *pData, int32_t dataLen,
+                                    TXN *txn);
 static int64_t tsdbGetIntervalByPrecision(int64_t interval, uint8_t intervalUnit, int8_t precision, bool adjusted);
 static int32_t tsdbGetTSmaDays(STsdb *pTsdb, int64_t interval, int32_t storageLevel);
 static int32_t tsdbSetTSmaDataFile(STSmaWriteH *pSmaH, int64_t indexUid, int32_t fid);
@@ -117,9 +141,121 @@ static int32_t tsdbInsertRSmaDataImpl(STsdb *pTsdb, const char *msg);
 // mgmt interface
 static int32_t tsdbDropTSmaDataImpl(STsdb *pTsdb, int64_t indexUid);
 
+// Pool Memory
+static SPoolMem *openPool();
+static void      clearPool(SPoolMem *pPool);
+static void      closePool(SPoolMem *pPool);
+static void     *poolMalloc(void *arg, size_t size);
+static void      poolFree(void *arg, void *ptr);
+
+static int tsdbSmaBeginCommit(SSmaEnv *pEnv);
+static int tsdbSmaEndCommit(SSmaEnv *pEnv);
+
 // implementation
-static FORCE_INLINE int16_t tsdbTSmaAdd(STsdb *pTsdb, int16_t n) { return atomic_add_fetch_16(&REPO_TSMA_NUM(pTsdb), n); }
-static FORCE_INLINE int16_t tsdbTSmaSub(STsdb *pTsdb, int16_t n) { return atomic_sub_fetch_16(&REPO_TSMA_NUM(pTsdb), n); }
+static FORCE_INLINE int16_t tsdbTSmaAdd(STsdb *pTsdb, int16_t n) {
+  return atomic_add_fetch_16(&REPO_TSMA_NUM(pTsdb), n);
+}
+static FORCE_INLINE int16_t tsdbTSmaSub(STsdb *pTsdb, int16_t n) {
+  return atomic_sub_fetch_16(&REPO_TSMA_NUM(pTsdb), n);
+}
+
+static FORCE_INLINE int32_t tsdbRLockSma(SSmaEnv *pEnv) {
+  int code = taosThreadRwlockRdlock(&(pEnv->lock));
+  if (code != 0) {
+    terrno = TAOS_SYSTEM_ERROR(code);
+    return -1;
+  }
+  return 0;
+}
+
+static FORCE_INLINE int32_t tsdbWLockSma(SSmaEnv *pEnv) {
+  int code = taosThreadRwlockWrlock(&(pEnv->lock));
+  if (code != 0) {
+    terrno = TAOS_SYSTEM_ERROR(code);
+    return -1;
+  }
+  return 0;
+}
+
+static FORCE_INLINE int32_t tsdbUnLockSma(SSmaEnv *pEnv) {
+  int code = taosThreadRwlockUnlock(&(pEnv->lock));
+  if (code != 0) {
+    terrno = TAOS_SYSTEM_ERROR(code);
+    return -1;
+  }
+  return 0;
+}
+
+static SPoolMem *openPool() {
+  SPoolMem *pPool = (SPoolMem *)tdbOsMalloc(sizeof(*pPool));
+
+  pPool->prev = pPool->next = pPool;
+  pPool->size = 0;
+
+  return pPool;
+}
+
+static void clearPool(SPoolMem *pPool) {
+  if (!pPool) return;
+  
+  SPoolMem *pMem;
+
+  do {
+    pMem = pPool->next;
+
+    if (pMem == pPool) break;
+
+    pMem->next->prev = pMem->prev;
+    pMem->prev->next = pMem->next;
+    pPool->size -= pMem->size;
+
+    tdbOsFree(pMem);
+  } while (1);
+
+  assert(pPool->size == 0);
+}
+
+static void closePool(SPoolMem *pPool) {
+  if (pPool) {
+    clearPool(pPool);
+    tdbOsFree(pPool);
+  }
+}
+
+static void *poolMalloc(void *arg, size_t size) {
+  void     *ptr = NULL;
+  SPoolMem *pPool = (SPoolMem *)arg;
+  SPoolMem *pMem;
+
+  pMem = (SPoolMem *)tdbOsMalloc(sizeof(*pMem) + size);
+  if (pMem == NULL) {
+    assert(0);
+  }
+
+  pMem->size = sizeof(*pMem) + size;
+  pMem->next = pPool->next;
+  pMem->prev = pPool;
+
+  pPool->next->prev = pMem;
+  pPool->next = pMem;
+  pPool->size += pMem->size;
+
+  ptr = (void *)(&pMem[1]);
+  return ptr;
+}
+
+static void poolFree(void *arg, void *ptr) {
+  SPoolMem *pPool = (SPoolMem *)arg;
+  SPoolMem *pMem;
+
+  pMem = &(((SPoolMem *)ptr)[-1]);
+
+  pMem->next->prev = pMem->prev;
+  pMem->prev->next = pMem->next;
+  pPool->size -= pMem->size;
+
+  tdbOsFree(pMem);
+}
 
 int32_t tsdbInitSma(STsdb *pTsdb) {
   // tSma
@@ -213,7 +349,12 @@ static SSmaEnv *tsdbNewSmaEnv(const STsdb *pTsdb, const char *path, SDiskID did)
 
   char aname[TSDB_FILENAME_LEN] = {0};
   tfsAbsoluteName(pTsdb->pTfs, did, path, aname);
-  if (tsdbOpenBDBEnv(&pEnv->dbEnv, aname) != TSDB_CODE_SUCCESS) {
+  if (tsdbOpenDBEnv(&pEnv->dbEnv, aname) != TSDB_CODE_SUCCESS) {
+    tsdbFreeSmaEnv(pEnv);
+    return NULL;
+  }
+
+  if ((pEnv->pPool = openPool()) == NULL) {
     tsdbFreeSmaEnv(pEnv);
     return NULL;
   }
@@ -248,7 +389,8 @@ void tsdbDestroySmaEnv(SSmaEnv *pSmaEnv) {
     taosMemoryFreeClear(pSmaEnv->pStat);
     taosMemoryFreeClear(pSmaEnv->path);
     taosThreadRwlockDestroy(&(pSmaEnv->lock));
-    tsdbCloseBDBEnv(pSmaEnv->dbEnv);
+    tsdbCloseDBEnv(pSmaEnv->dbEnv);
+    closePool(pSmaEnv->pPool);
   }
 }
 
@@ -414,7 +556,7 @@ static int32_t tsdbSetExpiredWindow(STsdb *pTsdb, SHashObj *pItemsHash, int64_t
     }
 
     // cache smaMeta
-    STSma *pSma = metaGetSmaInfoByIndex(pTsdb->pMeta, indexUid);
+    STSma *pSma = metaGetSmaInfoByIndex(pTsdb->pMeta, indexUid, true);
     if (pSma == NULL) {
       terrno = TSDB_CODE_TDB_NO_SMA_INDEX_IN_META;
       taosHashCleanup(pItem->expiredWindows);
@@ -498,10 +640,6 @@ int32_t tsdbUpdateExpiredWindowImpl(STsdb *pTsdb, SSubmitReq *pMsg) {
     return TSDB_CODE_FAILED;
   }
 
-#ifndef TSDB_SMA_TEST
-  TSKEY expiredWindows[SMA_TEST_EXPIRED_WINDOW_SIZE];
-#endif
-
   // Firstly, assume that tSma can only be created on super table/normal table.
   // getActiveTimeWindow
 
@@ -563,6 +701,10 @@ int32_t tsdbUpdateExpiredWindowImpl(STsdb *pTsdb, SSubmitReq *pMsg) {
       TSKEY winSKey = taosTimeTruncate(TD_ROW_KEY(row), &interval, interval.precision);
 
       tsdbSetExpiredWindow(pTsdb, pItemsHash, pTSma->indexUid, winSKey);
+
+      // TODO: release only when suid changes.
+      tdDestroyTSmaWrapper(pSW);
+      taosMemoryFreeClear(pSW);
     }
   }
 
@@ -676,10 +818,12 @@ static int32_t tsdbGetSmaStorageLevel(int64_t interval, int8_t intervalUnit) {
  * @param dataLen
  * @return int32_t
  */
-static int32_t tsdbInsertTSmaBlocks(STSmaWriteH *pSmaH, void *smaKey, uint32_t keyLen, void *pData, uint32_t dataLen) {
+static int32_t tsdbInsertTSmaBlocks(STSmaWriteH *pSmaH, void *smaKey, int32_t keyLen, void *pData, int32_t dataLen,
+                                    TXN *txn) {
   SDBFile *pDBFile = &pSmaH->dFile;
+
   // TODO: insert sma data blocks into B+Tree(TDB)
-  if (tsdbSaveSmaToDB(pDBFile, smaKey, keyLen, pData, dataLen) != 0) {
+  if (tsdbSaveSmaToDB(pDBFile, smaKey, keyLen, pData, dataLen, txn) != 0) {
     tsdbWarn("vgId:%d insert sma data blocks into %s: smaKey %" PRIx64 "-%" PRIx64 ", dataLen %" PRIu32 " fail",
              REPO_ID(pSmaH->pTsdb), pDBFile->path, *(int64_t *)smaKey, *(int64_t *)POINTER_SHIFT(smaKey, 8), dataLen);
     return TSDB_CODE_FAILED;
@@ -826,6 +970,30 @@ static int32_t tsdbGetTSmaDays(STsdb *pTsdb, int64_t interval, int32_t storageLe
   return daysPerFile;
 }
 
+static int tsdbSmaBeginCommit(SSmaEnv *pEnv) {
+  TXN *pTxn = &pEnv->txn;
+  // start a new txn
+  tdbTxnOpen(pTxn, 0, poolMalloc, poolFree, pEnv->pPool, TDB_TXN_WRITE | TDB_TXN_READ_UNCOMMITTED);
+  if (tdbBegin(pEnv->dbEnv, pTxn) != 0) {
+    tsdbWarn("tsdbSma tdb restart txn fail");
+    return -1;
+  }
+  return 0;
+}
+
+static int tsdbSmaEndCommit(SSmaEnv *pEnv) {
+  TXN *pTxn = &pEnv->txn;
+
+  // Commit current txn
+  if (tdbCommit(pEnv->dbEnv, pTxn) != 0) {
+    tsdbWarn("tsdbSma tdb commit fail");
+    return -1;
+  }
+  tdbTxnClose(pTxn);
+  clearPool(pEnv->pPool);
+  return 0;
+}
+
 /**
  * @brief Insert/Update Time-range-wise SMA data.
  *  - If interval < SMA_STORAGE_SPLIT_HOURS(e.g. 24), save the SMA data as a part of DFileSet to e.g.
@@ -911,14 +1079,10 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, int64_t indexUid, const char
     int64_t      groupId = pDataBlock->info.groupId;
     for (int32_t j = 0; j < rows; ++j) {
       printf("|");
-      TSKEY skey = 1649295200000;  // TSKEY_INITIAL_VAL;  // the start key of TS window by interval
+      TSKEY skey = TSKEY_INITIAL_VAL;  //  the start key of TS window by interval
       void *pSmaKey = &smaKey;
       bool  isStartKey = false;
-      {
-        // just for debugging
-        isStartKey = true;
-        tsdbEncodeTSmaKey(groupId, skey, &pSmaKey);
-      }
+
       int32_t tlen = 0;     // reset the len
       pDataBuf = &dataBuf;  // reset the buf
       for (int32_t k = 0; k < colNum; ++k) {
@@ -929,7 +1093,7 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, int64_t indexUid, const char
             if (!isStartKey) {
               isStartKey = true;
               skey = *(TSKEY *)var;
-              printf("==> skey = %" PRIi64 " groupId = %" PRIi64 "|", skey, groupId);
+              printf("= skey %" PRIi64 " groupId = %" PRIi64 "|", skey, groupId);
               tsdbEncodeTSmaKey(groupId, skey, &pSmaKey);
             } else {
               printf(" %" PRIi64 " |", *(int64_t *)var);
@@ -1010,6 +1174,7 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, int64_t indexUid, const char
         // TODO: tsdbStartTSmaCommit();
         if (fid != tSmaH.dFile.fid) {
           if (tSmaH.dFile.fid != TSDB_IVLD_FID) {
+            tsdbSmaEndCommit(pEnv);
             tsdbCloseDBF(&tSmaH.dFile);
           }
           tsdbSetTSmaDataFile(&tSmaH, indexUid, fid);
@@ -1020,12 +1185,14 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, int64_t indexUid, const char
             tsdbUnRefSmaStat(pTsdb, pStat);
             return TSDB_CODE_FAILED;
           }
+          tsdbSmaBeginCommit(pEnv);
         }
 
-        if (tsdbInsertTSmaBlocks(&tSmaH, &smaKey, SMA_KEY_LEN, dataBuf, tlen) != 0) {
+        if (tsdbInsertTSmaBlocks(&tSmaH, &smaKey, SMA_KEY_LEN, dataBuf, tlen, &pEnv->txn) != 0) {
           tsdbWarn("vgId:%d insert tSma data blocks fail for index %" PRIi64 ", skey %" PRIi64 ", groupId %" PRIi64
                    " since %s",
                    REPO_ID(pTsdb), indexUid, skey, groupId, tstrerror(terrno));
+          tsdbSmaEndCommit(pEnv);
           tsdbDestroyTSmaWriteH(&tSmaH);
           tsdbUnRefSmaStat(pTsdb, pStat);
           return TSDB_CODE_FAILED;
@@ -1044,9 +1211,10 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, int64_t indexUid, const char
       printf("\n");
     }
   }
-
+  tsdbSmaEndCommit(pEnv);  // TODO: not commit for every insert
   tsdbDestroyTSmaWriteH(&tSmaH);
   tsdbUnRefSmaStat(pTsdb, pStat);
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -1370,8 +1538,8 @@ static int32_t tsdbGetTSmaDataImpl(STsdb *pTsdb, char *pData, int64_t indexUid,
   tsdbDebug("vgId:%d get sma data from %s: smaKey %" PRIx64 "-%" PRIx64 ", keyLen %d", REPO_ID(pTsdb),
             tReadH.dFile.path, *(int64_t *)smaKey, *(int64_t *)POINTER_SHIFT(smaKey, 8), SMA_KEY_LEN);
 
-  void    *result = NULL;
-  uint32_t valueSize = 0;
+  void   *result = NULL;
+  int32_t valueSize = 0;
   if ((result = tsdbGetSmaDataByKey(&tReadH.dFile, smaKey, SMA_KEY_LEN, &valueSize)) == NULL) {
     tsdbWarn("vgId:%d get sma data failed from smaIndex %" PRIi64 ", smaKey %" PRIx64 "-%" PRIx64 " since %s",
              REPO_ID(pTsdb), indexUid, *(int64_t *)smaKey, *(int64_t *)POINTER_SHIFT(smaKey, 8), tstrerror(terrno));
@@ -1422,7 +1590,7 @@ int32_t tsdbCreateTSma(STsdb *pTsdb, char *pMsg) {
     return -1;
   }
   tsdbDebug("vgId:%d TDMT_VND_CREATE_SMA msg received for %s:%" PRIi64, REPO_ID(pTsdb), vCreateSmaReq.tSma.indexName,
-         vCreateSmaReq.tSma.indexUid);
+            vCreateSmaReq.tSma.indexUid);
 
   // record current timezone of server side
   vCreateSmaReq.tSma.timezoneInt = tsTimezone;
@@ -1464,7 +1632,7 @@ int32_t tsdbDropTSma(STsdb *pTsdb, char *pMsg) {
     return -1;
   }
 
-  tsdbTSmaSub(pTsdb, 1);  
+  tsdbTSmaSub(pTsdb, 1);
 
   // TODO: return directly or go on follow steps?
   return TSDB_CODE_SUCCESS;
diff --git a/source/dnode/vnode/src/tsdb/tsdbTDBImpl.c b/source/dnode/vnode/src/tsdb/tsdbTDBImpl.c
new file mode 100644
index 0000000000..519ecd3fa0
--- /dev/null
+++ b/source/dnode/vnode/src/tsdb/tsdbTDBImpl.c
@@ -0,0 +1,137 @@
+/*
+ * 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/>.
+ */
+
+#define ALLOW_FORBID_FUNC
+
+#include "vnodeInt.h"
+
+int32_t tsdbOpenDBEnv(TENV **ppEnv, const char *path) {
+  int   ret = 0;
+
+  if (path == NULL) return -1;
+
+  ret = tdbEnvOpen(path, 4096, 256, ppEnv); // use as param
+
+  if (ret != 0) {
+    tsdbError("Failed to create tsdb db env, ret = %d", ret);
+    return -1;
+  }
+
+  return 0;
+}
+
+int32_t tsdbCloseDBEnv(TENV *pEnv) { return tdbEnvClose(pEnv); }
+
+static inline int tsdbSmaKeyCmpr(const void *arg1, int len1, const void *arg2, int len2) {
+  const SSmaKey *pKey1 = (const SSmaKey *)arg1;
+  const SSmaKey *pKey2 = (const SSmaKey *)arg2;
+
+  ASSERT(len1 == len2 && len1 == sizeof(SSmaKey));
+
+  if (pKey1->skey < pKey2->skey) {
+    return -1;
+  } else if (pKey1->skey > pKey2->skey) {
+    return 1;
+  }
+  if (pKey1->groupId < pKey2->groupId) {
+    return -1;
+  } else if (pKey1->groupId > pKey2->groupId) {
+    return 1;
+  }
+
+  return 0;
+}
+
+static int32_t tsdbOpenDBDb(TDB **ppDB, TENV *pEnv, const char *pFName) {
+  int            ret;
+  FKeyComparator compFunc;
+
+  // Create a database
+  compFunc = tsdbSmaKeyCmpr;
+  ret = tdbDbOpen(pFName, TDB_VARIANT_LEN, TDB_VARIANT_LEN, compFunc, pEnv, ppDB);
+
+  return 0;
+}
+
+static int32_t tsdbCloseDBDb(TDB *pDB) { return tdbDbClose(pDB); }
+
+int32_t tsdbOpenDBF(TENV *pEnv, SDBFile *pDBF) {
+  // TEnv is shared by a group of SDBFile
+  if (!pEnv || !pDBF) {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
+
+  // Open DBF
+  if (tsdbOpenDBDb(&(pDBF->pDB), pEnv, pDBF->path) < 0) {
+    terrno = TSDB_CODE_TDB_INIT_FAILED;
+    tsdbCloseDBDb(pDBF->pDB);
+    return -1;
+  }
+
+  return 0;
+}
+
+int32_t tsdbCloseDBF(SDBFile *pDBF) {
+  int32_t ret = 0;
+  if (pDBF->pDB) {
+    ret = tsdbCloseDBDb(pDBF->pDB);
+    pDBF->pDB = NULL;
+  }
+  taosMemoryFreeClear(pDBF->path);
+  return ret;
+}
+
+int32_t tsdbSaveSmaToDB(SDBFile *pDBF, void *pKey, int32_t keyLen, void *pVal, int32_t valLen, TXN *txn) {
+  int32_t ret;
+
+  ret = tdbDbInsert(pDBF->pDB, pKey, keyLen, pVal, valLen, txn);
+  if (ret < 0) {
+    tsdbError("Failed to create insert sma data into db, ret = %d", ret);
+    return -1;
+  }
+
+  return 0;
+}
+
+void *tsdbGetSmaDataByKey(SDBFile *pDBF, const void *pKey, int32_t keyLen, int32_t *valLen) {
+  void *result;
+  void *pVal;
+  int   ret;
+
+  ret = tdbDbGet(pDBF->pDB, pKey, keyLen, &pVal, valLen);
+
+  if (ret < 0) {
+    tsdbError("Failed to get sma data from db, ret = %d", ret);
+    return NULL;
+  }
+
+  ASSERT(*valLen >= 0);
+
+  result = taosMemoryMalloc(*valLen);
+
+  if (result == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return NULL;
+  }
+
+  // TODO: lock?
+  // TODO: Would the key/value be destoryed during return the data?
+  // TODO: How about the key is updated while value length is changed? The original value buffer would be freed
+  // automatically?
+  memcpy(result, pVal, *valLen);
+
+  return result;
+}
\ No newline at end of file
diff --git a/source/dnode/vnode/src/vnd/vnodeWrite.c b/source/dnode/vnode/src/vnd/vnodeWrite.c
index bf2260c51c..0449319dc2 100644
--- a/source/dnode/vnode/src/vnd/vnodeWrite.c
+++ b/source/dnode/vnode/src/vnd/vnodeWrite.c
@@ -19,7 +19,7 @@ void smaHandleRes(void *pVnode, int64_t smaId, const SArray *data) {
   // TODO
 
   // blockDebugShowData(data);
-  // tsdbInsertTSmaData(((SVnode *)pVnode)->pTsdb, smaId, (const char *)data);
+  tsdbInsertTSmaData(((SVnode *)pVnode)->pTsdb, smaId, (const char *)data);
 }
 
 void vnodeProcessWMsgs(SVnode *pVnode, SArray *pMsgs) {
@@ -232,9 +232,9 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
       tdDestroyTSma(&vCreateSmaReq.tSma);
       // TODO: return directly or go on follow steps?
 #endif
-    //   if (tsdbCreateTSma(pVnode->pTsdb, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead))) < 0) {
-    //     // TODO
-    //   }
+      if (tsdbCreateTSma(pVnode->pTsdb, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead))) < 0) {
+        // TODO
+      }
     // } break;
     // case TDMT_VND_CANCEL_SMA: {  // timeRangeSMA
     // } break;
diff --git a/source/dnode/vnode/test/tsdbSmaTest.cpp b/source/dnode/vnode/test/tsdbSmaTest.cpp
index 6a4adfe4f8..da874716f2 100644
--- a/source/dnode/vnode/test/tsdbSmaTest.cpp
+++ b/source/dnode/vnode/test/tsdbSmaTest.cpp
@@ -210,7 +210,7 @@ TEST(testCase, tSma_metaDB_Put_Get_Del_Test) {
 
   // get value by indexName
   STSma *qSmaCfg = NULL;
-  qSmaCfg = metaGetSmaInfoByIndex(pMeta, indexUid1);
+  qSmaCfg = metaGetSmaInfoByIndex(pMeta, indexUid1, true);
   assert(qSmaCfg != NULL);
   printf("name1 = %s\n", qSmaCfg->indexName);
   printf("timezone1 = %" PRIi8 "\n", qSmaCfg->timezoneInt);
@@ -221,7 +221,7 @@ TEST(testCase, tSma_metaDB_Put_Get_Del_Test) {
   tdDestroyTSma(qSmaCfg);
   taosMemoryFreeClear(qSmaCfg);
 
-  qSmaCfg = metaGetSmaInfoByIndex(pMeta, indexUid2);
+  qSmaCfg = metaGetSmaInfoByIndex(pMeta, indexUid2, true);
   assert(qSmaCfg != NULL);
   printf("name2 = %s\n", qSmaCfg->indexName);
   printf("timezone2 = %" PRIi8 "\n", qSmaCfg->timezoneInt);
@@ -233,11 +233,12 @@ TEST(testCase, tSma_metaDB_Put_Get_Del_Test) {
   taosMemoryFreeClear(qSmaCfg);
 
   // get index name by table uid
+#if 0
   SMSmaCursor *pSmaCur = metaOpenSmaCursor(pMeta, tbUid);
   assert(pSmaCur != NULL);
   uint32_t indexCnt = 0;
   while (1) {
-    const char *indexName = metaSmaCursorNext(pSmaCur);
+    const char *indexName = (const char *)metaSmaCursorNext(pSmaCur);
     if (indexName == NULL) {
       break;
     }
@@ -245,8 +246,8 @@ TEST(testCase, tSma_metaDB_Put_Get_Del_Test) {
     ++indexCnt;
   }
   EXPECT_EQ(indexCnt, nCntTSma);
-  metaCloseSmaCurosr(pSmaCur);
-
+  metaCloseSmaCursor(pSmaCur);
+#endif
   // get wrapper by table uid
   STSmaWrapper *pSW = metaGetSmaInfoByTable(pMeta, tbUid);
   assert(pSW != NULL);
diff --git a/source/libs/tdb/src/db/tdbBtree.c b/source/libs/tdb/src/db/tdbBtree.c
index 9df749bec7..8a95635ddc 100644
--- a/source/libs/tdb/src/db/tdbBtree.c
+++ b/source/libs/tdb/src/db/tdbBtree.c
@@ -1196,21 +1196,22 @@ int tdbBtreeNext(SBTC *pBtc, void **ppKey, int *kLen, void **ppVal, int *vLen) {
     return -1;
   }
 
-  // TODO: vLen may be zero
-  pVal = TDB_REALLOC(*ppVal, cd.vLen);
-  if (pVal == NULL) {
-    TDB_FREE(pKey);
-    return -1;
-  }
-
   *ppKey = pKey;
-  *ppVal = pVal;
-
   *kLen = cd.kLen;
-  *vLen = cd.vLen;
-
   memcpy(pKey, cd.pKey, cd.kLen);
-  memcpy(pVal, cd.pVal, cd.vLen);
+
+  if (ppVal) {
+    // TODO: vLen may be zero
+    pVal = TDB_REALLOC(*ppVal, cd.vLen);
+    if (pVal == NULL) {
+      TDB_FREE(pKey);
+      return -1;
+    }
+
+    *ppVal = pVal;
+    *vLen = cd.vLen;
+    memcpy(pVal, cd.pVal, cd.vLen);
+  }
 
   ret = tdbBtcMoveToNext(pBtc);
   if (ret < 0) {
diff --git a/tests/script/jenkins/basic.txt b/tests/script/jenkins/basic.txt
index c5c041be91..c14d4fe27b 100644
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
@@ -80,4 +80,7 @@
 ./test.sh -f tsim/qnode/basic1.sim -m
 ./test.sh -f tsim/mnode/basic1.sim -m
 
+# --- sma
+./test.sh -f tsim/sma/tsmaCreateInsertData.sim
+
 #======================b1-end===============
diff --git a/tests/script/tsim/sma/tsmaCreateInsertData.sim b/tests/script/tsim/sma/tsmaCreateInsertData.sim
new file mode 100644
index 0000000000..9fc3700da1
--- /dev/null
+++ b/tests/script/tsim/sma/tsmaCreateInsertData.sim
@@ -0,0 +1,48 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/exec.sh -n dnode1 -s start
+sleep 50
+sql connect
+
+print =============== create database
+sql create database d1
+sql show databases
+if $rows != 2 then 
+  return -1
+endi
+
+print $data00 $data01 $data02
+
+sql use d1
+
+print =============== create super table, include column type for count/sum/min/max/first
+sql create table if not exists stb (ts timestamp, c1 int, c2 float, c3 double) tags (t1 int unsigned)
+
+sql show stables
+if $rows != 1 then 
+  return -1
+endi
+
+print =============== create child table
+sql create table ct1 using stb tags(1000)
+
+sql show tables
+if $rows != 1 then 
+  return -1
+endi
+
+print =============== insert data, mode1: one row one table in sql
+sql insert into ct1 values(now+0s, 10, 2.0, 3.0)
+sql insert into ct1 values(now+1s, 11, 2.1, 3.1)(now+2s, -12, -2.2, -3.2)(now+3s, -13, -2.3, -3.3)
+
+
+print =============== create sma index from super table
+sql create sma index sma_index_name1 on stb function(max(c1),max(c2),min(c1)) interval(5m,10s) sliding(2m)
+print $data00 $data01 $data02  $data03
+
+print =============== trigger stream to execute sma aggr task and insert sma data into sma store
+sql insert into ct1 values(now+5s, 20, 20.0, 30.0)
+#===================================================================
+
+
+system sh/exec.sh -n dnode1 -s stop -x SIGINT