diff --git a/include/dnode/mnode/sdb/sdb.h b/include/dnode/mnode/sdb/sdb.h
index 3648af5fcb..8bd3db0217 100644
--- a/include/dnode/mnode/sdb/sdb.h
+++ b/include/dnode/mnode/sdb/sdb.h
@@ -38,6 +38,15 @@ extern "C" {
     dataPos += sizeof(int32_t);                    \
   }
 
+#define SDB_GET_INT16(pData, pRow, dataPos, val)   \
+  {                                                \
+    if (sdbGetRawInt16(pRaw, dataPos, val) != 0) { \
+      sdbFreeRow(pRow);                            \
+      return NULL;                                 \
+    }                                              \
+    dataPos += sizeof(int16_t);                    \
+  }
+
 #define SDB_GET_INT8(pData, pRow, dataPos, val)   \
   {                                               \
     if (sdbGetRawInt8(pRaw, dataPos, val) != 0) { \
@@ -74,6 +83,15 @@ extern "C" {
     dataPos += sizeof(int32_t);                    \
   }
 
+#define SDB_SET_INT16(pRaw, dataPos, val)          \
+  {                                                \
+    if (sdbSetRawInt16(pRaw, dataPos, val) != 0) { \
+      sdbFreeRaw(pRaw);                            \
+      return NULL;                                 \
+    }                                              \
+    dataPos += sizeof(int16_t);                     \
+  }
+
 #define SDB_SET_INT8(pRaw, dataPos, val)          \
   {                                               \
     if (sdbSetRawInt8(pRaw, dataPos, val) != 0) { \
@@ -100,6 +118,7 @@ extern "C" {
     }                                           \
   }
 
+typedef struct SMnode  SMnode;
 typedef struct SSdbRaw SSdbRaw;
 typedef struct SSdbRow SSdbRow;
 typedef enum { SDB_KEY_BINARY = 1, SDB_KEY_INT32 = 2, SDB_KEY_INT64 = 3 } EKeyType;
@@ -130,7 +149,7 @@ typedef struct SSdb SSdb;
 typedef int32_t (*SdbInsertFp)(SSdb *pSdb, void *pObj);
 typedef int32_t (*SdbUpdateFp)(SSdb *pSdb, void *pSrcObj, void *pDstObj);
 typedef int32_t (*SdbDeleteFp)(SSdb *pSdb, void *pObj);
-typedef int32_t (*SdbDeployFp)(SSdb *pSdb);
+typedef int32_t (*SdbDeployFp)(SMnode *pMnode);
 typedef SSdbRow *(*SdbDecodeFp)(SSdbRaw *pRaw);
 typedef SSdbRaw *(*SdbEncodeFp)(void *pObj);
 
@@ -190,6 +209,12 @@ typedef struct SSdbOpt {
    *
    */
   const char *path;
+
+  /**
+   * @brief The mnode object.
+   *
+   */
+  SMnode *pMnode;
 } SSdbOpt;
 
 /**
@@ -291,12 +316,14 @@ int32_t sdbGetSize(SSdb *pSdb, ESdbType type);
 SSdbRaw *sdbAllocRaw(ESdbType type, int8_t sver, int32_t dataLen);
 void     sdbFreeRaw(SSdbRaw *pRaw);
 int32_t  sdbSetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t val);
+int32_t  sdbSetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t val);
 int32_t  sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val);
 int32_t  sdbSetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t val);
 int32_t  sdbSetRawBinary(SSdbRaw *pRaw, int32_t dataPos, const char *pVal, int32_t valLen);
 int32_t  sdbSetRawDataLen(SSdbRaw *pRaw, int32_t dataLen);
 int32_t  sdbSetRawStatus(SSdbRaw *pRaw, ESdbStatus status);
 int32_t  sdbGetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t *val);
+int32_t  sdbGetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t *val);
 int32_t  sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val);
 int32_t  sdbGetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t *val);
 int32_t  sdbGetRawBinary(SSdbRaw *pRaw, int32_t dataPos, char *pVal, int32_t valLen);
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index 9b8c6eccc8..8bd3bd3d34 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -78,6 +78,38 @@ typedef enum {
 
 typedef enum { TRN_POLICY_ROLLBACK = 1, TRN_POLICY_RETRY = 2 } ETrnPolicy;
 
+typedef enum {
+  DND_STATUS_OFFLINE = 0,
+  DND_STATUS_READY = 1,
+  DND_STATUS_CREATING = 2,
+  DND_STATUS_DROPPING = 3
+} EDndStatus;
+
+typedef enum {
+  DND_REASON_ONLINE = 0,
+  DND_REASON_STATUS_MSG_TIMEOUT,
+  DND_REASON_STATUS_NOT_RECEIVED,
+  DND_REASON_RESET_BY_MNODE,
+  DND_REASON_VERSION_NOT_MATCH,
+  DND_REASON_DNODE_ID_NOT_MATCH,
+  DND_REASON_CLUSTER_ID_NOT_MATCH,
+  DND_REASON_NUM_OF_MNODES_NOT_MATCH,
+  DND_REASON_ENABLE_BALANCE_NOT_MATCH,
+  DND_REASON_MN_EQUAL_VN_NOT_MATCH,
+  DND_REASON_OFFLINE_THRESHOLD_NOT_MATCH,
+  DND_REASON_STATUS_INTERVAL_NOT_MATCH,
+  DND_REASON_MAX_TAB_PER_VN_NOT_MATCH,
+  DND_REASON_MAX_VG_PER_DB_NOT_MATCH,
+  DND_REASON_ARBITRATOR_NOT_MATCH,
+  DND_REASON_TIME_ZONE_NOT_MATCH,
+  DND_REASON_LOCALE_NOT_MATCH,
+  DND_REASON_CHARSET_NOT_MATCH,
+  DND_REASON_FLOW_CTRL_NOT_MATCH,
+  DND_REASON_SLAVE_QUERY_NOT_MATCH,
+  DND_REASON_ADJUST_MASTER_NOT_MATCH,
+  DND_REASON_OTHERS
+} EDndReason;
+
 typedef struct STrans {
   int32_t    id;
   ETrnStage  stage;
@@ -99,29 +131,32 @@ typedef struct SClusterObj {
 } SClusterObj;
 
 typedef struct SDnodeObj {
-  int32_t  id;
-  int32_t  vnodes;
-  int64_t  createdTime;
-  int64_t  updateTime;
-  int64_t  lastAccess;
-  int64_t  rebootTime;  // time stamp for last reboot
-  char     fqdn[TSDB_FQDN_LEN];
-  char     ep[TSDB_EP_LEN];
-  uint16_t port;
-  int16_t  numOfCores;       // from dnode status msg
-  int8_t   alternativeRole;  // from dnode status msg, 0-any, 1-mgmt, 2-dnode
-  int8_t   status;           // set in balance function
-  int8_t   offlineReason;
+  int32_t    id;
+  int64_t    createdTime;
+  int64_t    updateTime;
+  int64_t    rebootTime;
+  int64_t    lastAccessTime;
+  int16_t    numOfMnodes;
+  int16_t    numOfVnodes;
+  int16_t    numOfQnodes;
+  int16_t    numOfSupportMnodes;
+  int16_t    numOfSupportVnodes;
+  int16_t    numOfSupportQnodes;
+  EDndStatus status;
+  EDndReason offlineReason;
+  uint16_t   port;
+  char       fqdn[TSDB_FQDN_LEN];
+  char       ep[TSDB_EP_LEN];
 } SDnodeObj;
 
 typedef struct SMnodeObj {
   int32_t    id;
+  int64_t    createdTime;
+  int64_t    updateTime;
   int8_t     status;
   int8_t     role;
   int32_t    roleTerm;
   int64_t    roleTime;
-  int64_t    createdTime;
-  int64_t    updateTime;
   SDnodeObj *pDnode;
 } SMnodeObj;
 
diff --git a/source/dnode/mnode/impl/inc/mndTrans.h b/source/dnode/mnode/impl/inc/mndTrans.h
index 745c0a0447..9559a96255 100644
--- a/source/dnode/mnode/impl/inc/mndTrans.h
+++ b/source/dnode/mnode/impl/inc/mndTrans.h
@@ -13,8 +13,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _TD_TRANSACTION_INT_H_
-#define _TD_TRANSACTION_INT_H_
+#ifndef _TD_MND_TRANS_H_
+#define _TD_MND_TRANS_H_
 
 #include "mndInt.h"
 
@@ -44,4 +44,4 @@ SSdbRow *mndTransActionDecode(SSdbRaw *pRaw);
 }
 #endif
 
-#endif /*_TD_TRANSACTION_INT_H_*/
+#endif /*_TD_MND_TRANS_H_*/
diff --git a/source/dnode/mnode/impl/src/mndAcct.c b/source/dnode/mnode/impl/src/mndAcct.c
index dd91de1c95..73b0167422 100644
--- a/source/dnode/mnode/impl/src/mndAcct.c
+++ b/source/dnode/mnode/impl/src/mndAcct.c
@@ -79,7 +79,7 @@ static int32_t mnodeAcctActionUpdate(SSdb *pSdb, SAcctObj *pSrcAcct, SAcctObj *p
   return 0;
 }
 
-static int32_t mnodeCreateDefaultAcct(SSdb *pSdb) {
+static int32_t mnodeCreateDefaultAcct(SMnode *pMnode) {
   int32_t code = 0;
 
   SAcctObj acctObj = {0};
@@ -98,7 +98,7 @@ static int32_t mnodeCreateDefaultAcct(SSdb *pSdb) {
   if (pRaw == NULL) return -1;
   sdbSetRawStatus(pRaw, SDB_STATUS_READY);
 
-  return sdbWrite(pSdb, pRaw);
+  return sdbWrite(pMnode->pSdb, pRaw);
 }
 
 int32_t mndInitAcct(SMnode *pMnode) {
diff --git a/source/dnode/mnode/impl/src/mndDnode.c b/source/dnode/mnode/impl/src/mndDnode.c
index 11f3dc1ee9..d9e13178cc 100644
--- a/source/dnode/mnode/impl/src/mndDnode.c
+++ b/source/dnode/mnode/impl/src/mndDnode.c
@@ -14,8 +14,115 @@
  */
 
 #define _DEFAULT_SOURCE
-#include "os.h"
-#include "mndInt.h"
+#include "mndTrans.h"
 
-int32_t mndInitDnode(SMnode *pMnode) { return 0; }
-void    mndCleanupDnode(SMnode *pMnode) {}
\ No newline at end of file
+#define SDB_DNODE_VER 1
+
+static SSdbRaw *mndDnodeActionEncode(SDnodeObj *pDnode) {
+  SSdbRaw *pRaw = sdbAllocRaw(SDB_USER, SDB_DNODE_VER, sizeof(SDnodeObj));
+  if (pRaw == NULL) return NULL;
+
+  int32_t dataPos = 0;
+  SDB_SET_INT32(pRaw, dataPos, pDnode->id);
+  SDB_SET_INT64(pRaw, dataPos, pDnode->createdTime)
+  SDB_SET_INT64(pRaw, dataPos, pDnode->updateTime)
+  SDB_SET_INT16(pRaw, dataPos, pDnode->port)
+  SDB_SET_BINARY(pRaw, dataPos, pDnode->fqdn, TSDB_FQDN_LEN)
+  SDB_SET_DATALEN(pRaw, dataPos);
+
+  return pRaw;
+}
+
+static SSdbRow *mndDnodeActionDecode(SSdbRaw *pRaw) {
+  int8_t sver = 0;
+  if (sdbGetRawSoftVer(pRaw, &sver) != 0) return NULL;
+
+  if (sver != SDB_DNODE_VER) {
+    terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
+    mError("failed to decode dnode since %s", terrstr());
+    return NULL;
+  }
+
+  SSdbRow   *pRow = sdbAllocRow(sizeof(SDnodeObj));
+  SDnodeObj *pDnode = sdbGetRowObj(pRow);
+  if (pDnode == NULL) return NULL;
+
+  int32_t dataPos = 0;
+  SDB_GET_INT32(pRaw, pRow, dataPos, &pDnode->id)
+  SDB_GET_INT64(pRaw, pRow, dataPos, &pDnode->createdTime)
+  SDB_GET_INT64(pRaw, pRow, dataPos, &pDnode->updateTime)
+  SDB_GET_INT16(pRaw, pRow, dataPos, &pDnode->port)
+  SDB_GET_BINARY(pRaw, pRow, dataPos, pDnode->fqdn, TSDB_FQDN_LEN)
+
+  return pRow;
+}
+
+static void mnodeResetDnode(SDnodeObj *pDnode) {
+  pDnode->rebootTime = 0;
+  pDnode->lastAccessTime = 0;
+  pDnode->numOfMnodes = 0;
+  pDnode->numOfVnodes = 0;
+  pDnode->numOfQnodes = 0;
+  pDnode->numOfSupportMnodes = 0;
+  pDnode->numOfSupportVnodes = 0;
+  pDnode->numOfSupportQnodes = 0;
+  pDnode->status = DND_STATUS_OFFLINE;
+  pDnode->offlineReason = DND_REASON_RESET_BY_MNODE;
+  snprintf(pDnode->ep, TSDB_EP_LEN, "%s:%u", pDnode->fqdn, pDnode->port);
+}
+
+static int32_t mndDnodeActionInsert(SSdb *pSdb, SDnodeObj *pDnode) {
+  mnodeResetDnode(pDnode);
+  return 0;
+}
+
+static int32_t mndDnodeActionDelete(SSdb *pSdb, SDnodeObj *pDnode) { return 0; }
+
+static int32_t mndDnodeActionUpdate(SSdb *pSdb, SDnodeObj *pSrcDnode, SDnodeObj *pDstDnode) {
+  pSrcDnode->id = pDstDnode->id;
+  pSrcDnode->createdTime = pDstDnode->createdTime;
+  pSrcDnode->updateTime = pDstDnode->updateTime;
+  pSrcDnode->port = pDstDnode->port;
+  memcpy(pSrcDnode->fqdn, pDstDnode->fqdn, TSDB_FQDN_LEN);
+  mnodeResetDnode(pSrcDnode);
+}
+
+static int32_t mndCreateDefaultDnode(SMnode *pMnode) {
+  SDnodeObj dnodeObj = {0};
+  dnodeObj.id = 0;
+  dnodeObj.createdTime = taosGetTimestampMs();
+  dnodeObj.updateTime = dnodeObj.createdTime;
+  dnodeObj.port = pMnode->replicas[0].port;
+  memcpy(&dnodeObj.fqdn, pMnode->replicas[0].fqdn, TSDB_FQDN_LEN);
+
+  SSdbRaw *pRaw = mndDnodeActionEncode(&dnodeObj);
+  if (pRaw == NULL) return -1;
+  sdbSetRawStatus(pRaw, SDB_STATUS_READY);
+
+  return sdbWrite(pMnode->pSdb, pRaw);
+}
+
+static int32_t mndProcessCreateDnodeMsg(SMnode *pMnode, SMnodeMsg *pMsg) { return 0; }
+
+static int32_t mndProcessDropDnodeMsg(SMnode *pMnode, SMnodeMsg *pMsg) { return 0; }
+
+static int32_t mndProcessConfigDnodeMsg(SMnode *pMnode, SMnodeMsg *pMsg) { return 0; }
+
+int32_t mndInitDnode(SMnode *pMnode) {
+  SSdbTable table = {.sdbType = SDB_USER,
+                     .keyType = SDB_KEY_BINARY,
+                     .deployFp = (SdbDeployFp)mndCreateDefaultDnode,
+                     .encodeFp = (SdbEncodeFp)mndDnodeActionEncode,
+                     .decodeFp = (SdbDecodeFp)mndDnodeActionDecode,
+                     .insertFp = (SdbInsertFp)mndDnodeActionInsert,
+                     .updateFp = (SdbUpdateFp)mndDnodeActionUpdate,
+                     .deleteFp = (SdbDeleteFp)mndDnodeActionDelete};
+
+  mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_CREATE_DNODE, mndProcessCreateDnodeMsg);
+  mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_DROP_DNODE, mndProcessDropDnodeMsg);
+  mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_CONFIG_DNODE, mndProcessConfigDnodeMsg);
+
+  return sdbSetTable(pMnode->pSdb, table);
+}
+
+void mndCleanupDnode(SMnode *pMnode) {}
\ No newline at end of file
diff --git a/source/dnode/mnode/impl/src/mndUser.c b/source/dnode/mnode/impl/src/mndUser.c
index d63e3662e0..4156d2ab37 100644
--- a/source/dnode/mnode/impl/src/mndUser.c
+++ b/source/dnode/mnode/impl/src/mndUser.c
@@ -21,7 +21,7 @@
 #define SDB_USER_VER 1
 
 static SSdbRaw *mndUserActionEncode(SUserObj *pUser) {
-  SSdbRaw *pRaw = sdbAllocRaw(SDB_USER, SDB_USER_VER, sizeof(SAcctObj));
+  SSdbRaw *pRaw = sdbAllocRaw(SDB_USER, SDB_USER_VER, sizeof(SUserObj));
   if (pRaw == NULL) return NULL;
 
   int32_t dataPos = 0;
@@ -97,7 +97,7 @@ static int32_t mndUserActionUpdate(SSdb *pSdb, SUserObj *pSrcUser, SUserObj *pDs
   return 0;
 }
 
-static int32_t mndCreateDefaultUser(SSdb *pSdb, char *acct, char *user, char *pass) {
+static int32_t mndCreateDefaultUser(SMnode *pMnode, char *acct, char *user, char *pass) {
   SUserObj userObj = {0};
   tstrncpy(userObj.user, user, TSDB_USER_LEN);
   tstrncpy(userObj.acct, acct, TSDB_USER_LEN);
@@ -113,15 +113,15 @@ static int32_t mndCreateDefaultUser(SSdb *pSdb, char *acct, char *user, char *pa
   if (pRaw == NULL) return -1;
   sdbSetRawStatus(pRaw, SDB_STATUS_READY);
 
-  return sdbWrite(pSdb, pRaw);
+  return sdbWrite(pMnode->pSdb, pRaw);
 }
 
-static int32_t mndCreateDefaultUsers(SSdb *pSdb) {
-  if (mndCreateDefaultUser(pSdb, TSDB_DEFAULT_USER, TSDB_DEFAULT_USER, TSDB_DEFAULT_PASS) != 0) {
+static int32_t mndCreateDefaultUsers(SMnode *pMnode) {
+  if (mndCreateDefaultUser(pMnode, TSDB_DEFAULT_USER, TSDB_DEFAULT_USER, TSDB_DEFAULT_PASS) != 0) {
     return -1;
   }
 
-  if (mndCreateDefaultUser(pSdb, TSDB_DEFAULT_USER, "_" TSDB_DEFAULT_USER, TSDB_DEFAULT_PASS) != 0) {
+  if (mndCreateDefaultUser(pMnode, TSDB_DEFAULT_USER, "_" TSDB_DEFAULT_USER, TSDB_DEFAULT_PASS) != 0) {
     return -1;
   }
 
diff --git a/source/dnode/mnode/sdb/inc/sdbInt.h b/source/dnode/mnode/sdb/inc/sdbInt.h
index 6162617568..e492f28557 100644
--- a/source/dnode/mnode/sdb/inc/sdbInt.h
+++ b/source/dnode/mnode/sdb/inc/sdbInt.h
@@ -38,8 +38,8 @@ extern "C" {
 
 typedef struct SSdbRaw {
   int8_t  type;
-  int8_t  sver;
   int8_t  status;
+  int8_t  sver;
   int8_t  reserved;
   int32_t dataLen;
   char    pData[];
@@ -53,6 +53,7 @@ typedef struct SSdbRow {
 } SSdbRow;
 
 typedef struct SSdb {
+  SMnode     *pMnode;
   char       *currDir;
   char       *syncDir;
   char       *tmpDir;
diff --git a/source/dnode/mnode/sdb/src/sdb.c b/source/dnode/mnode/sdb/src/sdb.c
index 4f1267498c..1ceb3862ee 100644
--- a/source/dnode/mnode/sdb/src/sdb.c
+++ b/source/dnode/mnode/sdb/src/sdb.c
@@ -27,7 +27,7 @@ SSdb *sdbInit(SSdbOpt *pOption) {
   }
 
   char path[PATH_MAX + 100];
-  snprintf(path, PATH_MAX + 100, "%s", pOption->path);
+  snprintf(path, PATH_MAX + 100, "%s%sdata", pOption->path, TD_DIRSEP);
   pSdb->currDir = strdup(path);
   snprintf(path, PATH_MAX + 100, "%s%ssync", pOption->path, TD_DIRSEP);
   pSdb->syncDir = strdup(path);
@@ -44,6 +44,7 @@ SSdb *sdbInit(SSdbOpt *pOption) {
     taosInitRWLatch(&pSdb->locks[i]);
   }
 
+  pSdb->pMnode = pOption->pMnode;
   mDebug("sdb init successfully");
   return pSdb;
 }
diff --git a/source/dnode/mnode/sdb/src/sdbFile.c b/source/dnode/mnode/sdb/src/sdbFile.c
index 37fcdc19ef..b285675b85 100644
--- a/source/dnode/mnode/sdb/src/sdbFile.c
+++ b/source/dnode/mnode/sdb/src/sdbFile.c
@@ -46,7 +46,7 @@ static int32_t sdbRunDeployFp(SSdb *pSdb) {
     SdbDeployFp fp = pSdb->deployFps[i];
     if (fp == NULL) continue;
 
-    if ((*fp)(pSdb) != 0) {
+    if ((*fp)(pSdb->pMnode) != 0) {
       mError("failed to deploy sdb:%d since %s", i, terrstr());
       return -1;
     }
diff --git a/source/dnode/mnode/sdb/src/sdbRaw.c b/source/dnode/mnode/sdb/src/sdbRaw.c
index 2abff74168..7ed1a427f5 100644
--- a/source/dnode/mnode/sdb/src/sdbRaw.c
+++ b/source/dnode/mnode/sdb/src/sdbRaw.c
@@ -61,6 +61,21 @@ int32_t sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val) {
   return 0;
 }
 
+int32_t sdbSetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t val) {
+  if (pRaw == NULL) {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
+
+  if (dataPos + sizeof(int16_t) > pRaw->dataLen) {
+    terrno = TSDB_CODE_SDB_INVALID_DATA_LEN;
+    return -1;
+  }
+
+  *(int16_t *)(pRaw->pData + dataPos) = val;
+  return 0;
+}
+
 int32_t sdbSetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t val) {
   if (pRaw == NULL) {
     terrno = TSDB_CODE_INVALID_PTR;
@@ -146,6 +161,21 @@ int32_t sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val) {
   return 0;
 }
 
+int32_t sdbGetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t *val) {
+  if (pRaw == NULL) {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
+
+  if (dataPos + sizeof(int16_t) > pRaw->dataLen) {
+    terrno = TSDB_CODE_SDB_INVALID_DATA_LEN;
+    return -1;
+  }
+
+  *val = *(int16_t *)(pRaw->pData + dataPos);
+  return 0;
+}
+
 int32_t sdbGetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t *val) {
   if (pRaw == NULL) {
     terrno = TSDB_CODE_INVALID_PTR;