diff --git a/include/common/taosmsg.h b/include/common/taosmsg.h
index b6c18a4f2b94c16501b26e3946b0088e0bf044de..f8652bec9a25c4933fe0a4d24ee4dea2a724470f 100644
--- a/include/common/taosmsg.h
+++ b/include/common/taosmsg.h
@@ -50,10 +50,9 @@ TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_CONSUME, "mq-consume" )
 TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_QUERY, "mq-query" )
 TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_CONNECT, "mq-connect" )
 TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_DISCONNECT, "mq-disconnect" )
-TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_ACK, "mq-ack" )
-TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_RESET, "mq-reset" )
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MQ_SET, "mq-set" )
 // message from client to mnode
-TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CONNECT, "connect" )	 
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CONNECT, "connect" )
 TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CREATE_ACCT, "create-acct" )	
 TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_ALTER_ACCT, "alter-acct" )
 TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DROP_ACCT, "drop-acct" )
diff --git a/include/dnode/vnode/tq/tq.h b/include/dnode/vnode/tq/tq.h
index d6f7b46870e60565565e3e32697962a396c1f4af..7993a8f1abdb2ad2f36964bfd861371ff96976dd 100644
--- a/include/dnode/vnode/tq/tq.h
+++ b/include/dnode/vnode/tq/tq.h
@@ -62,10 +62,10 @@ typedef struct TmqDisconnectRsp {
   int8_t     status;
 } TmqDisconnectRsp;
 
-typedef struct TmqConsumeReq {
+typedef struct STqConsumeReq {
   TmqMsgHead head;
   TmqAcks    acks;
-} TmqConsumeReq;
+} STqConsumeReq;
 
 typedef struct TmqMsgContent {
   int64_t topicId;
@@ -73,11 +73,11 @@ typedef struct TmqMsgContent {
   char    msg[];
 } TmqMsgContent;
 
-typedef struct TmqConsumeRsp {
+typedef struct STqConsumeRsp {
   TmqMsgHead    head;
   int64_t       bodySize;
   TmqMsgContent msgs[];
-} TmqConsumeRsp;
+} STqConsumeRsp;
 
 typedef struct TmqSubscribeReq {
   TmqMsgHead head;
@@ -261,13 +261,14 @@ typedef struct STQ {
 
 // open in each vnode
 STQ* tqOpen(const char* path, STqCfg* tqConfig, STqLogReader* tqLogReader, SMemAllocatorFactory* allocFac);
-void tqDestroy(STQ*);
+void tqClose(STQ*);
 
 // void* will be replace by a msg type
 int tqPushMsg(STQ*, void* msg, int64_t version);
 int tqCommit(STQ*);
+int tqSetCursor(STQ*, void* msg);
 
-int tqConsume(STQ*, TmqConsumeReq*);
+int tqConsume(STQ*, STqConsumeReq*);
 
 STqGroupHandle* tqGetGroupHandle(STQ*, int64_t cId);
 
diff --git a/source/dnode/mgmt/impl/src/dndTransport.c b/source/dnode/mgmt/impl/src/dndTransport.c
index 6dc46cefcdd4260df881d57126ae7773d98964b9..1db92644aee88ed8c8a3a7721ada85cefcd23022 100644
--- a/source/dnode/mgmt/impl/src/dndTransport.c
+++ b/source/dnode/mgmt/impl/src/dndTransport.c
@@ -44,8 +44,7 @@ static void dndInitMsgFp(STransMgmt *pMgmt) {
   pMgmt->msgFp[TSDB_MSG_TYPE_MQ_CONSUME] = dndProcessVnodeQueryMsg;
   pMgmt->msgFp[TSDB_MSG_TYPE_MQ_CONNECT] = dndProcessVnodeWriteMsg;
   pMgmt->msgFp[TSDB_MSG_TYPE_MQ_DISCONNECT] = dndProcessVnodeWriteMsg;
-  pMgmt->msgFp[TSDB_MSG_TYPE_MQ_ACK] = dndProcessVnodeWriteMsg;
-  pMgmt->msgFp[TSDB_MSG_TYPE_MQ_RESET] = dndProcessVnodeWriteMsg;
+  pMgmt->msgFp[TSDB_MSG_TYPE_MQ_SET] = dndProcessVnodeWriteMsg;
 
   // msg from client to mnode
   pMgmt->msgFp[TSDB_MSG_TYPE_CONNECT] = dndProcessMnodeReadMsg;
diff --git a/source/dnode/vnode/impl/inc/vnodeStateMgr.h b/source/dnode/vnode/impl/inc/vnodeStateMgr.h
index 788426e25efbad8d125b8bd737acff26b43e0489..5862b304ed171d135d7096ab4af076ce6fcbb8e3 100644
--- a/source/dnode/vnode/impl/inc/vnodeStateMgr.h
+++ b/source/dnode/vnode/impl/inc/vnodeStateMgr.h
@@ -21,13 +21,13 @@ extern "C" {
 #endif
 
 typedef struct {
-  uint64_t processed;
-  uint64_t committed;
-  uint64_t applied;
+  int64_t processed;
+  int64_t committed;
+  int64_t applied;
 } SVState;
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /*_TD_VNODE_STATE_MGR_H_*/
\ No newline at end of file
+#endif /*_TD_VNODE_STATE_MGR_H_*/
diff --git a/source/dnode/vnode/impl/src/vnodeWrite.c b/source/dnode/vnode/impl/src/vnodeWrite.c
index 85460e8d912e0e896bdad6dc17a95199d13855d8..85e044266ab368fac124c2f38d4008499e51b70e 100644
--- a/source/dnode/vnode/impl/src/vnodeWrite.c
+++ b/source/dnode/vnode/impl/src/vnodeWrite.c
@@ -15,16 +15,31 @@
 
 #include "vnodeDef.h"
 
+int vnodeProcessNoWalWMsgs(SVnode *pVnode, SRpcMsg *pMsg) {
+  SVnodeReq *pVnodeReq;
+
+  switch (pMsg->msgType) {
+    case TSDB_MSG_TYPE_MQ_SET:
+      if (tqSetCursor(pVnode->pTq, pMsg->pCont) < 0) {
+        // TODO: handle error
+      }
+      break;
+  }
+
+  void *pBuf = pMsg->pCont;
+  return 0;
+}
+
 int vnodeProcessWMsgs(SVnode *pVnode, SArray *pMsgs) {
-  SRpcMsg *  pMsg;
+  SRpcMsg   *pMsg;
   SVnodeReq *pVnodeReq;
 
   for (int i = 0; i < taosArrayGetSize(pMsgs); i++) {
     pMsg = *(SRpcMsg **)taosArrayGet(pMsgs, i);
 
     // ser request version
-    void *   pBuf = pMsg->pCont;
-    uint64_t ver = pVnode->state.processed++;
+    void   *pBuf = pMsg->pCont;
+    int64_t ver = pVnode->state.processed++;
     taosEncodeFixedU64(&pBuf, ver);
 
     if (walWrite(pVnode->pWal, ver, pMsg->msgType, pMsg->pCont, pMsg->contLen) < 0) {
@@ -99,4 +114,4 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
   return 0;
 }
 
-/* ------------------------ STATIC METHODS ------------------------ */
\ No newline at end of file
+/* ------------------------ STATIC METHODS ------------------------ */
diff --git a/source/dnode/vnode/tq/inc/tqInt.h b/source/dnode/vnode/tq/inc/tqInt.h
index 100149c0ea83b20ede8d5933da0618da89e64ef3..022b5998162b907382643d1e01a8cf0b05596696 100644
--- a/source/dnode/vnode/tq/inc/tqInt.h
+++ b/source/dnode/vnode/tq/inc/tqInt.h
@@ -22,16 +22,16 @@
 extern "C" {
 #endif
 
-//create persistent storage for meta info such as consuming offset
-//return value > 0: cgId
-//return value <= 0: error code
-//int tqCreateTCGroup(STQ*, const char* topic, int cgId, tqBufferHandle** handle);
-//create ring buffer in memory and load consuming offset
-//int tqOpenTCGroup(STQ*, const char* topic, int cgId);
-//destroy ring buffer and persist consuming offset
-//int tqCloseTCGroup(STQ*, const char* topic, int cgId);
-//delete persistent storage for meta info
-//int tqDropTCGroup(STQ*, const char* topic, int cgId);
+// create persistent storage for meta info such as consuming offset
+// return value > 0: cgId
+// return value <= 0: error code
+// int tqCreateTCGroup(STQ*, const char* topic, int cgId, tqBufferHandle** handle);
+// create ring buffer in memory and load consuming offset
+// int tqOpenTCGroup(STQ*, const char* topic, int cgId);
+// destroy ring buffer and persist consuming offset
+// int tqCloseTCGroup(STQ*, const char* topic, int cgId);
+// delete persistent storage for meta info
+// int tqDropTCGroup(STQ*, const char* topic, int cgId);
 
 #ifdef __cplusplus
 }
diff --git a/source/dnode/vnode/tq/inc/tqMetaStore.h b/source/dnode/vnode/tq/inc/tqMetaStore.h
index 253852b00fada07060cfd97c8d5c36e7456367bf..5bcedaed748d7d0668181183d09de7470ff630e2 100644
--- a/source/dnode/vnode/tq/inc/tqMetaStore.h
+++ b/source/dnode/vnode/tq/inc/tqMetaStore.h
@@ -23,27 +23,22 @@
 extern "C" {
 #endif
 
-
-STqMetaStore*  tqStoreOpen(const char* path,
-    FTqSerialize   pSerializer,
-    FTqDeserialize pDeserializer,
-    FTqDelete      pDeleter,
-    int32_t          tqConfigFlag
-  );
+STqMetaStore* tqStoreOpen(const char* path, FTqSerialize pSerializer, FTqDeserialize pDeserializer, FTqDelete pDeleter,
+                          int32_t tqConfigFlag);
 int32_t       tqStoreClose(STqMetaStore*);
-//int32_t       tqStoreDelete(TqMetaStore*);
-//int32_t       tqStoreCommitAll(TqMetaStore*);
-int32_t       tqStorePersist(STqMetaStore*);
-//clean deleted idx and data from persistent file
-int32_t       tqStoreCompact(STqMetaStore*);
-
-void*   tqHandleGet(STqMetaStore*, int64_t key);
-//make it unpersist
+// int32_t       tqStoreDelete(TqMetaStore*);
+// int32_t       tqStoreCommitAll(TqMetaStore*);
+int32_t tqStorePersist(STqMetaStore*);
+// clean deleted idx and data from persistent file
+int32_t tqStoreCompact(STqMetaStore*);
+
+void* tqHandleGet(STqMetaStore*, int64_t key);
+// make it unpersist
 void*   tqHandleTouchGet(STqMetaStore*, int64_t key);
 int32_t tqHandleMovePut(STqMetaStore*, int64_t key, void* value);
 int32_t tqHandleCopyPut(STqMetaStore*, int64_t key, void* value, size_t vsize);
-//delete committed kv pair
-//notice that a delete action still needs to be committed
+// delete committed kv pair
+// notice that a delete action still needs to be committed
 int32_t tqHandleDel(STqMetaStore*, int64_t key);
 int32_t tqHandleCommit(STqMetaStore*, int64_t key);
 int32_t tqHandleAbort(STqMetaStore*, int64_t key);
diff --git a/source/dnode/vnode/tq/src/tq.c b/source/dnode/vnode/tq/src/tq.c
index 1326666857758618baca7984a4d8934bd3e738cb..2c075292197bb5052ad5c8dde08003fb6e97a11f 100644
--- a/source/dnode/vnode/tq/src/tq.c
+++ b/source/dnode/vnode/tq/src/tq.c
@@ -214,7 +214,11 @@ int tqCommit(STQ* pTq) {
   return 0;
 }
 
-int tqConsume(STQ* pTq, TmqConsumeReq* pMsg) {
+int tqSetCursor(STQ* pTq, void* msg) {
+  return 0;
+}
+
+int tqConsume(STQ* pTq, STqConsumeReq* pMsg) {
   if (!tqProtoCheck((TmqMsgHead*)pMsg)) {
     // proto version invalid
     return -1;
@@ -232,7 +236,7 @@ int tqConsume(STQ* pTq, TmqConsumeReq* pMsg) {
     }
   }
 
-  TmqConsumeRsp* pRsp = (TmqConsumeRsp*)pMsg;
+  STqConsumeRsp* pRsp = (STqConsumeRsp*)pMsg;
 
   if (tqFetch(gHandle, (void**)&pRsp->msgs) <= 0) {
     // fetch error
diff --git a/source/libs/wal/inc/walInt.h b/source/libs/wal/inc/walInt.h
index 819afcc411b778ab57159a931116118d937208bb..1579cad7b62b7d227f10d0ddccb7cfe573e3ddd3 100644
--- a/source/libs/wal/inc/walInt.h
+++ b/source/libs/wal/inc/walInt.h
@@ -16,72 +16,70 @@
 #ifndef _TD_WAL_INT_H_
 #define _TD_WAL_INT_H_
 
-#include "wal.h"
 #include "compare.h"
 #include "tchecksum.h"
+#include "wal.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-//meta section begin
+// meta section begin
 typedef struct WalFileInfo {
   int64_t firstVer;
   int64_t lastVer;
   int64_t createTs;
   int64_t closeTs;
   int64_t fileSize;
-} WalFileInfo;
+} SWalFileInfo;
 
 typedef struct WalIdxEntry {
   int64_t ver;
   int64_t offset;
-} WalIdxEntry;
+} SWalIdxEntry;
 
 static inline int32_t compareWalFileInfo(const void* pLeft, const void* pRight) {
-  WalFileInfo* pInfoLeft = (WalFileInfo*)pLeft;
-  WalFileInfo* pInfoRight = (WalFileInfo*)pRight;
+  SWalFileInfo* pInfoLeft = (SWalFileInfo*)pLeft;
+  SWalFileInfo* pInfoRight = (SWalFileInfo*)pRight;
   return compareInt64Val(&pInfoLeft->firstVer, &pInfoRight->firstVer);
 }
 
 static inline int64_t walGetLastFileSize(SWal* pWal) {
-  WalFileInfo* pInfo = (WalFileInfo*)taosArrayGetLast(pWal->fileInfoSet);
+  SWalFileInfo* pInfo = (SWalFileInfo*)taosArrayGetLast(pWal->fileInfoSet);
   return pInfo->fileSize;
 }
 
 static inline int64_t walGetLastFileFirstVer(SWal* pWal) {
-  WalFileInfo* pInfo = (WalFileInfo*)taosArrayGetLast(pWal->fileInfoSet);
+  SWalFileInfo* pInfo = (SWalFileInfo*)taosArrayGetLast(pWal->fileInfoSet);
   return pInfo->firstVer;
 }
 
 static inline int64_t walGetCurFileFirstVer(SWal* pWal) {
-  WalFileInfo* pInfo = (WalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
+  SWalFileInfo* pInfo = (SWalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
   return pInfo->firstVer;
 }
 
 static inline int64_t walGetCurFileLastVer(SWal* pWal) {
-  WalFileInfo* pInfo = (WalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
+  SWalFileInfo* pInfo = (SWalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
   return pInfo->firstVer;
 }
 
 static inline int64_t walGetCurFileOffset(SWal* pWal) {
-  WalFileInfo* pInfo = (WalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
+  SWalFileInfo* pInfo = (SWalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
   return pInfo->fileSize;
 }
 
-static inline bool walCurFileClosed(SWal* pWal) {
-  return taosArrayGetSize(pWal->fileInfoSet) != pWal->writeCur;
-}
+static inline bool walCurFileClosed(SWal* pWal) { return taosArrayGetSize(pWal->fileInfoSet) != pWal->writeCur; }
 
-static inline WalFileInfo* walGetCurFileInfo(SWal* pWal) {
-  return (WalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
+static inline SWalFileInfo* walGetCurFileInfo(SWal* pWal) {
+  return (SWalFileInfo*)taosArrayGet(pWal->fileInfoSet, pWal->writeCur);
 }
 
-static inline int walBuildLogName(SWal*pWal, int64_t fileFirstVer, char* buf) {
+static inline int walBuildLogName(SWal* pWal, int64_t fileFirstVer, char* buf) {
   return sprintf(buf, "%s/%020" PRId64 "." WAL_LOG_SUFFIX, pWal->path, fileFirstVer);
 }
 
-static inline int walBuildIdxName(SWal*pWal, int64_t fileFirstVer, char* buf) {
+static inline int walBuildIdxName(SWal* pWal, int64_t fileFirstVer, char* buf) {
   return sprintf(buf, "%s/%020" PRId64 "." WAL_INDEX_SUFFIX, pWal->path, fileFirstVer);
 }
 
@@ -93,11 +91,11 @@ static inline int walValidBodyCksum(SWalHead* pHead) {
   return taosCheckChecksum((uint8_t*)pHead->head.body, pHead->head.len, pHead->cksumBody);
 }
 
-static inline int walValidCksum(SWalHead *pHead, void* body, int64_t bodyLen) {
+static inline int walValidCksum(SWalHead* pHead, void* body, int64_t bodyLen) {
   return walValidHeadCksum(pHead) && walValidBodyCksum(pHead);
 }
 
-static inline uint32_t walCalcHeadCksum(SWalHead *pHead) {
+static inline uint32_t walCalcHeadCksum(SWalHead* pHead) {
   return taosCalcChecksum(0, (uint8_t*)&pHead->head, sizeof(SWalReadHead));
 }
 
@@ -106,7 +104,7 @@ static inline uint32_t walCalcBodyCksum(const void* body, uint32_t len) {
 }
 
 static inline int64_t walGetVerIdxOffset(SWal* pWal, int64_t ver) {
-  return (ver - walGetCurFileFirstVer(pWal)) * sizeof(WalIdxEntry);
+  return (ver - walGetCurFileFirstVer(pWal)) * sizeof(SWalIdxEntry);
 }
 
 static inline void walResetVer(SWalVer* pVer) {
@@ -126,16 +124,16 @@ int walCheckAndRepairMeta(SWal* pWal);
 int walCheckAndRepairIdx(SWal* pWal);
 
 char* walMetaSerialize(SWal* pWal);
-int walMetaDeserialize(SWal* pWal, const char* bytes);
-//meta section end
+int   walMetaDeserialize(SWal* pWal, const char* bytes);
+// meta section end
 
-//seek section
-int walChangeFile(SWal *pWal, int64_t ver);
-//seek section end
+// seek section
+int walChangeFile(SWal* pWal, int64_t ver);
+// seek section end
 
 int64_t walGetSeq();
-int walSeekVer(SWal *pWal, int64_t ver);
-int walRoll(SWal *pWal);
+int     walSeekVer(SWal* pWal, int64_t ver);
+int     walRoll(SWal* pWal);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/wal/src/walMeta.c b/source/libs/wal/src/walMeta.c
index e86a2b622124ba71359ea9305770db41b6d96b18..0f155f9553d0dd421517fed036b6fcf6b3768542 100644
--- a/source/libs/wal/src/walMeta.c
+++ b/source/libs/wal/src/walMeta.c
@@ -79,13 +79,13 @@ int walRollFileInfo(SWal* pWal) {
 
   SArray* pArray = pWal->fileInfoSet;
   if (taosArrayGetSize(pArray) != 0) {
-    WalFileInfo* pInfo = taosArrayGetLast(pArray);
+    SWalFileInfo* pInfo = taosArrayGetLast(pArray);
     pInfo->lastVer = pWal->vers.lastVer;
     pInfo->closeTs = ts;
   }
 
   // TODO: change to emplace back
-  WalFileInfo* pNewInfo = malloc(sizeof(WalFileInfo));
+  SWalFileInfo* pNewInfo = malloc(sizeof(SWalFileInfo));
   if (pNewInfo == NULL) {
     return -1;
   }
@@ -122,9 +122,9 @@ char* walMetaSerialize(SWal* pWal) {
   cJSON_AddStringToObject(pMeta, "lastVer", buf);
 
   cJSON_AddItemToObject(pRoot, "files", pFiles);
-  WalFileInfo* pData = pWal->fileInfoSet->pData;
+  SWalFileInfo* pData = pWal->fileInfoSet->pData;
   for (int i = 0; i < sz; i++) {
-    WalFileInfo* pInfo = &pData[i];
+    SWalFileInfo* pInfo = &pData[i];
     cJSON_AddItemToArray(pFiles, pField = cJSON_CreateObject());
     if (pField == NULL) {
       cJSON_Delete(pRoot);
@@ -167,10 +167,10 @@ int walMetaDeserialize(SWal* pWal, const char* bytes) {
   // deserialize
   SArray* pArray = pWal->fileInfoSet;
   taosArrayEnsureCap(pArray, sz);
-  WalFileInfo* pData = pArray->pData;
+  SWalFileInfo* pData = pArray->pData;
   for (int i = 0; i < sz; i++) {
-    cJSON*       pInfoJson = cJSON_GetArrayItem(pFiles, i);
-    WalFileInfo* pInfo = &pData[i];
+    cJSON*        pInfoJson = cJSON_GetArrayItem(pFiles, i);
+    SWalFileInfo* pInfo = &pData[i];
     pField = cJSON_GetObjectItem(pInfoJson, "firstVer");
     pInfo->firstVer = atoll(cJSON_GetStringValue(pField));
     pField = cJSON_GetObjectItem(pInfoJson, "lastVer");
diff --git a/source/libs/wal/src/walMgmt.c b/source/libs/wal/src/walMgmt.c
index 5b6a8c6b2907b9c1e1c63ca0c117ca338e342286..189881c86d6cbfa8ddae98d65e2a24bd78f1f83a 100644
--- a/source/libs/wal/src/walMgmt.c
+++ b/source/libs/wal/src/walMgmt.c
@@ -92,7 +92,7 @@ SWal *walOpen(const char *path, SWalCfg *pCfg) {
   pWal->writeLogTfd = -1;
   pWal->writeIdxTfd = -1;
   pWal->writeCur = -1;
-  pWal->fileInfoSet = taosArrayInit(8, sizeof(WalFileInfo));
+  pWal->fileInfoSet = taosArrayInit(8, sizeof(SWalFileInfo));
   if (pWal->fileInfoSet == NULL) {
     wError("vgId:%d, path:%s, failed to init taosArray %s", pWal->cfg.vgId, pWal->path, strerror(errno));
     free(pWal);
diff --git a/source/libs/wal/src/walRead.c b/source/libs/wal/src/walRead.c
index b6e232fa5cd72a96b731762dcecf945ad8cd583f..48eb84b5360b34a3a686a7c825fcd12c39e87fc7 100644
--- a/source/libs/wal/src/walRead.c
+++ b/source/libs/wal/src/walRead.c
@@ -52,13 +52,13 @@ static int32_t walReadSeekFilePos(SWalReadHandle *pRead, int64_t fileFirstVer, i
   int64_t logTfd = pRead->readLogTfd;
 
   // seek position
-  int64_t offset = (ver - fileFirstVer) * sizeof(WalIdxEntry);
+  int64_t offset = (ver - fileFirstVer) * sizeof(SWalIdxEntry);
   code = tfLseek(idxTfd, offset, SEEK_SET);
   if (code < 0) {
     return -1;
   }
-  WalIdxEntry entry;
-  if (tfRead(idxTfd, &entry, sizeof(WalIdxEntry)) != sizeof(WalIdxEntry)) {
+  SWalIdxEntry entry;
+  if (tfRead(idxTfd, &entry, sizeof(SWalIdxEntry)) != sizeof(SWalIdxEntry)) {
     return -1;
   }
   // TODO:deserialize
@@ -105,10 +105,10 @@ static int32_t walReadSeekVer(SWalReadHandle *pRead, int64_t ver) {
   if (ver < pWal->vers.snapshotVer) {
   }
 
-  WalFileInfo tmpInfo;
+  SWalFileInfo tmpInfo;
   tmpInfo.firstVer = ver;
   // bsearch in fileSet
-  WalFileInfo *pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
+  SWalFileInfo *pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
   ASSERT(pRet != NULL);
   if (pRead->curFileFirstVer != pRet->firstVer) {
     code = walReadChangeFile(pRead, pRet->firstVer);
@@ -159,9 +159,9 @@ int32_t walReadWithHandle(SWalReadHandle *pRead, int64_t ver) {
     return -1;
   }
 
-  /*code = walValidBodyCksum(pRead->pHead);*/
   ASSERT(pRead->pHead->head.version == ver);
 
+  code = walValidBodyCksum(pRead->pHead);
   if (code != 0) {
     return -1;
   }
diff --git a/source/libs/wal/src/walSeek.c b/source/libs/wal/src/walSeek.c
index 82c596d22521fa073a928a4e31b4acf1b002a643..1f9b7b6e581b28cb5ae8eded23e4d1af8fca3690 100644
--- a/source/libs/wal/src/walSeek.c
+++ b/source/libs/wal/src/walSeek.c
@@ -32,9 +32,9 @@ static int walSeekFilePos(SWal* pWal, int64_t ver) {
   if (code != 0) {
     return -1;
   }
-  WalIdxEntry entry;
+  SWalIdxEntry entry;
   // TODO:deserialize
-  code = tfRead(idxTfd, &entry, sizeof(WalIdxEntry));
+  code = tfRead(idxTfd, &entry, sizeof(SWalIdxEntry));
   if (code != 0) {
     return -1;
   }
@@ -47,8 +47,8 @@ static int walSeekFilePos(SWal* pWal, int64_t ver) {
 }
 
 int walChangeFileToLast(SWal* pWal) {
-  int64_t      idxTfd, logTfd;
-  WalFileInfo* pRet = taosArrayGetLast(pWal->fileInfoSet);
+  int64_t       idxTfd, logTfd;
+  SWalFileInfo* pRet = taosArrayGetLast(pWal->fileInfoSet);
   ASSERT(pRet != NULL);
   int64_t fileFirstVer = pRet->firstVer;
 
@@ -83,10 +83,10 @@ int walChangeFile(SWal* pWal, int64_t ver) {
     // TODO
     return -1;
   }
-  WalFileInfo tmpInfo;
+  SWalFileInfo tmpInfo;
   tmpInfo.firstVer = ver;
   // bsearch in fileSet
-  WalFileInfo* pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
+  SWalFileInfo* pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
   ASSERT(pRet != NULL);
   int64_t fileFirstVer = pRet->firstVer;
   // closed
diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index c3a7ca5f4d888520cbfe83f8a38a965f2c57aa58..c8ffd9d07d59e378667392e3f0bf5012616f3332 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -56,9 +56,9 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
     // delete files
     int fileSetSize = taosArrayGetSize(pWal->fileInfoSet);
     for (int i = pWal->writeCur; i < fileSetSize; i++) {
-      walBuildLogName(pWal, ((WalFileInfo *)taosArrayGet(pWal->fileInfoSet, i))->firstVer, fnameStr);
+      walBuildLogName(pWal, ((SWalFileInfo *)taosArrayGet(pWal->fileInfoSet, i))->firstVer, fnameStr);
       remove(fnameStr);
-      walBuildIdxName(pWal, ((WalFileInfo *)taosArrayGet(pWal->fileInfoSet, i))->firstVer, fnameStr);
+      walBuildIdxName(pWal, ((SWalFileInfo *)taosArrayGet(pWal->fileInfoSet, i))->firstVer, fnameStr);
       remove(fnameStr);
     }
     // pop from fileInfoSet
@@ -81,8 +81,8 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
   }
   // read idx file and get log file pos
   // TODO:change to deserialize function
-  WalIdxEntry entry;
-  if (tfRead(idxTfd, &entry, sizeof(WalIdxEntry)) != sizeof(WalIdxEntry)) {
+  SWalIdxEntry entry;
+  if (tfRead(idxTfd, &entry, sizeof(SWalIdxEntry)) != sizeof(SWalIdxEntry)) {
     pthread_mutex_unlock(&pWal->mutex);
     return -1;
   }
@@ -128,8 +128,8 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
     return -1;
   }
   pWal->vers.lastVer = ver - 1;
-  ((WalFileInfo *)taosArrayGetLast(pWal->fileInfoSet))->lastVer = ver - 1;
-  ((WalFileInfo *)taosArrayGetLast(pWal->fileInfoSet))->fileSize = entry.offset;
+  ((SWalFileInfo *)taosArrayGetLast(pWal->fileInfoSet))->lastVer = ver - 1;
+  ((SWalFileInfo *)taosArrayGetLast(pWal->fileInfoSet))->fileSize = entry.offset;
 
   // unlock
   pthread_mutex_unlock(&pWal->mutex);
@@ -153,17 +153,17 @@ int32_t walEndSnapshot(SWal *pWal) {
   pWal->vers.snapshotVer = ver;
   int ts = taosGetTimestampSec();
 
-  int         deleteCnt = 0;
-  int64_t     newTotSize = pWal->totSize;
-  WalFileInfo tmp;
+  int          deleteCnt = 0;
+  int64_t      newTotSize = pWal->totSize;
+  SWalFileInfo tmp;
   tmp.firstVer = ver;
   // find files safe to delete
-  WalFileInfo *pInfo = taosArraySearch(pWal->fileInfoSet, &tmp, compareWalFileInfo, TD_LE);
+  SWalFileInfo *pInfo = taosArraySearch(pWal->fileInfoSet, &tmp, compareWalFileInfo, TD_LE);
   if (ver >= pInfo->lastVer) {
     pInfo++;
   }
   // iterate files, until the searched result
-  for (WalFileInfo *iter = pWal->fileInfoSet->pData; iter < pInfo; iter++) {
+  for (SWalFileInfo *iter = pWal->fileInfoSet->pData; iter < pInfo; iter++) {
     if (pWal->totSize > pWal->cfg.retentionSize || iter->closeTs + pWal->cfg.retentionPeriod > ts) {
       // delete according to file size or close time
       deleteCnt++;
@@ -173,7 +173,7 @@ int32_t walEndSnapshot(SWal *pWal) {
   char fnameStr[WAL_FILE_LEN];
   // remove file
   for (int i = 0; i < deleteCnt; i++) {
-    WalFileInfo *pInfo = taosArrayGet(pWal->fileInfoSet, i);
+    SWalFileInfo *pInfo = taosArrayGet(pWal->fileInfoSet, i);
     walBuildLogName(pWal, pInfo->firstVer, fnameStr);
     remove(fnameStr);
     walBuildIdxName(pWal, pInfo->firstVer, fnameStr);
@@ -186,7 +186,7 @@ int32_t walEndSnapshot(SWal *pWal) {
     pWal->writeCur = -1;
     pWal->vers.firstVer = -1;
   } else {
-    pWal->vers.firstVer = ((WalFileInfo *)taosArrayGet(pWal->fileInfoSet, 0))->firstVer;
+    pWal->vers.firstVer = ((SWalFileInfo *)taosArrayGet(pWal->fileInfoSet, 0))->firstVer;
   }
   pWal->writeCur = taosArrayGetSize(pWal->fileInfoSet) - 1;
   ;
@@ -248,9 +248,9 @@ int walRoll(SWal *pWal) {
 }
 
 static int walWriteIndex(SWal *pWal, int64_t ver, int64_t offset) {
-  WalIdxEntry entry = {.ver = ver, .offset = offset};
-  int         size = tfWrite(pWal->writeIdxTfd, &entry, sizeof(WalIdxEntry));
-  if (size != sizeof(WalIdxEntry)) {
+  SWalIdxEntry entry = {.ver = ver, .offset = offset};
+  int          size = tfWrite(pWal->writeIdxTfd, &entry, sizeof(SWalIdxEntry));
+  if (size != sizeof(SWalIdxEntry)) {
     // TODO truncate
     return -1;
   }