diff --git a/include/libs/wal/wal.h b/include/libs/wal/wal.h
index 5b8d70fb7c127d476566f54623c43783cd5a240a..14173690967ffd26be92cf13a05af6f7508533fe 100644
--- a/include/libs/wal/wal.h
+++ b/include/libs/wal/wal.h
@@ -77,11 +77,11 @@ typedef struct {
 } SWalSyncInfo;
 
 typedef struct {
-  int8_t  protoVer;
   int64_t version;
-  int16_t msgType;
+  int64_t ingestTs;
   int32_t bodyLen;
-  int64_t ingestTs;  // not implemented
+  int16_t msgType;
+  int8_t  protoVer;
 
   // sync meta
   SWalSyncInfo syncMeta;
diff --git a/source/libs/wal/src/walMeta.c b/source/libs/wal/src/walMeta.c
index a5fd3fca35c01b84f0b2c5b7cc4fe3b7bbf76662..a8da6809100fa5789e5b7e57e051631257782e1e 100644
--- a/source/libs/wal/src/walMeta.c
+++ b/source/libs/wal/src/walMeta.c
@@ -139,7 +139,7 @@ int walCheckAndRepairMeta(SWal* pWal) {
   const char* idxPattern = "^[0-9]+.idx$";
   regex_t     logRegPattern;
   regex_t     idxRegPattern;
-  SArray*     pLogInfoArray = taosArrayInit(8, sizeof(SWalFileInfo));
+  SArray*     actualLog = taosArrayInit(8, sizeof(SWalFileInfo));
 
   regcomp(&logRegPattern, logPattern, REG_EXTENDED);
   regcomp(&idxRegPattern, idxPattern, REG_EXTENDED);
@@ -159,7 +159,7 @@ int walCheckAndRepairMeta(SWal* pWal) {
       SWalFileInfo fileInfo;
       memset(&fileInfo, -1, sizeof(SWalFileInfo));
       sscanf(name, "%" PRId64 ".log", &fileInfo.firstVer);
-      taosArrayPush(pLogInfoArray, &fileInfo);
+      taosArrayPush(actualLog, &fileInfo);
     }
   }
 
@@ -167,10 +167,10 @@ int walCheckAndRepairMeta(SWal* pWal) {
   regfree(&logRegPattern);
   regfree(&idxRegPattern);
 
-  taosArraySort(pLogInfoArray, compareWalFileInfo);
+  taosArraySort(actualLog, compareWalFileInfo);
 
   int metaFileNum = taosArrayGetSize(pWal->fileInfoSet);
-  int actualFileNum = taosArrayGetSize(pLogInfoArray);
+  int actualFileNum = taosArrayGetSize(actualLog);
 
 #if 0
   for (int32_t fileNo = actualFileNum - 1; fileNo >= 0; fileNo--) {
@@ -196,11 +196,11 @@ int walCheckAndRepairMeta(SWal* pWal) {
     taosArrayPopFrontBatch(pWal->fileInfoSet, metaFileNum - actualFileNum);
   } else if (metaFileNum < actualFileNum) {
     for (int i = metaFileNum; i < actualFileNum; i++) {
-      SWalFileInfo* pFileInfo = taosArrayGet(pLogInfoArray, i);
+      SWalFileInfo* pFileInfo = taosArrayGet(actualLog, i);
       taosArrayPush(pWal->fileInfoSet, pFileInfo);
     }
   }
-  taosArrayDestroy(pLogInfoArray);
+  taosArrayDestroy(actualLog);
 
   pWal->writeCur = actualFileNum - 1;
   if (actualFileNum > 0) {
@@ -221,7 +221,7 @@ int walCheckAndRepairMeta(SWal* pWal) {
 
       int code = walSaveMeta(pWal);
       if (code < 0) {
-        taosArrayDestroy(pLogInfoArray);
+        taosArrayDestroy(actualLog);
         return -1;
       }
     }
diff --git a/source/libs/wal/src/walRead.c b/source/libs/wal/src/walRead.c
index ac62b7d98dfeec5e7df073ef165a79d1ad95b7f6..787c9af31703df50a4b91589e20f5f9373d71c56 100644
--- a/source/libs/wal/src/walRead.c
+++ b/source/libs/wal/src/walRead.c
@@ -423,37 +423,38 @@ int32_t walFetchBody(SWalReader *pRead, SWalCkHead **ppHead) {
   return 0;
 }
 
-int32_t walReadVer(SWalReader *pRead, int64_t ver) {
-  wDebug("vgId:%d wal start to read ver %ld", pRead->pWal->cfg.vgId, ver);
+int32_t walReadVer(SWalReader *pReader, int64_t ver) {
+  wDebug("vgId:%d wal start to read ver %ld", pReader->pWal->cfg.vgId, ver);
   int64_t contLen;
+  int32_t code;
   bool    seeked = false;
 
-  if (pRead->pWal->vers.firstVer == -1) {
+  if (pReader->pWal->vers.firstVer == -1) {
     terrno = TSDB_CODE_WAL_LOG_NOT_EXIST;
     return -1;
   }
 
-  if (ver > pRead->pWal->vers.lastVer || ver < pRead->pWal->vers.firstVer) {
-    wDebug("vgId:%d, invalid index:%" PRId64 ", first index:%" PRId64 ", last index:%" PRId64, pRead->pWal->cfg.vgId,
-           ver, pRead->pWal->vers.firstVer, pRead->pWal->vers.lastVer);
+  if (ver > pReader->pWal->vers.lastVer || ver < pReader->pWal->vers.firstVer) {
+    wDebug("vgId:%d, invalid index:%" PRId64 ", first index:%" PRId64 ", last index:%" PRId64, pReader->pWal->cfg.vgId,
+           ver, pReader->pWal->vers.firstVer, pReader->pWal->vers.lastVer);
     terrno = TSDB_CODE_WAL_LOG_NOT_EXIST;
     return -1;
   }
 
-  if (pRead->curInvalid || pRead->curVersion != ver) {
-    if (walReadSeekVer(pRead, ver) < 0) {
-      wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since %s", pRead->pWal->cfg.vgId, ver, terrstr());
+  if (pReader->curInvalid || pReader->curVersion != ver) {
+    if (walReadSeekVer(pReader, ver) < 0) {
+      wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since %s", pReader->pWal->cfg.vgId, ver, terrstr());
       return -1;
     }
     seeked = true;
   }
 
   while (1) {
-    contLen = taosReadFile(pRead->pLogFile, pRead->pHead, sizeof(SWalCkHead));
+    contLen = taosReadFile(pReader->pLogFile, pReader->pHead, sizeof(SWalCkHead));
     if (contLen == sizeof(SWalCkHead)) {
       break;
     } else if (contLen == 0 && !seeked) {
-      walReadSeekVerImpl(pRead, ver);
+      walReadSeekVerImpl(pReader, ver);
       seeked = true;
       continue;
     } else {
@@ -467,26 +468,26 @@ int32_t walReadVer(SWalReader *pRead, int64_t ver) {
     }
   }
 
-  contLen = walValidHeadCksum(pRead->pHead);
-  if (contLen != 0) {
-    wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since head checksum not passed", pRead->pWal->cfg.vgId,
+  code = walValidHeadCksum(pReader->pHead);
+  if (code != 0) {
+    wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since head checksum not passed", pReader->pWal->cfg.vgId,
            ver);
     terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
     return -1;
   }
 
-  if (pRead->capacity < pRead->pHead->head.bodyLen) {
-    void *ptr = taosMemoryRealloc(pRead->pHead, sizeof(SWalCkHead) + pRead->pHead->head.bodyLen);
+  if (pReader->capacity < pReader->pHead->head.bodyLen) {
+    void *ptr = taosMemoryRealloc(pReader->pHead, sizeof(SWalCkHead) + pReader->pHead->head.bodyLen);
     if (ptr == NULL) {
       terrno = TSDB_CODE_WAL_OUT_OF_MEMORY;
       return -1;
     }
-    pRead->pHead = ptr;
-    pRead->capacity = pRead->pHead->head.bodyLen;
+    pReader->pHead = ptr;
+    pReader->capacity = pReader->pHead->head.bodyLen;
   }
 
-  if ((contLen = taosReadFile(pRead->pLogFile, pRead->pHead->head.body, pRead->pHead->head.bodyLen)) !=
-      pRead->pHead->head.bodyLen) {
+  if ((contLen = taosReadFile(pReader->pLogFile, pReader->pHead->head.body, pReader->pHead->head.bodyLen)) !=
+      pReader->pHead->head.bodyLen) {
     if (contLen < 0)
       terrno = TAOS_SYSTEM_ERROR(errno);
     else {
@@ -496,25 +497,28 @@ int32_t walReadVer(SWalReader *pRead, int64_t ver) {
     return -1;
   }
 
-  if (pRead->pHead->head.version != ver) {
-    wError("vgId:%d, unexpected wal log, index:%" PRId64 ", read request index:%" PRId64, pRead->pWal->cfg.vgId,
-           pRead->pHead->head.version, ver);
-    pRead->curInvalid = 1;
+  if (pReader->pHead->head.version != ver) {
+    wError("vgId:%d, unexpected wal log, index:%" PRId64 ", read request index:%" PRId64, pReader->pWal->cfg.vgId,
+           pReader->pHead->head.version, ver);
+    pReader->curInvalid = 1;
     terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
     ASSERT(0);
     return -1;
   }
 
-  contLen = walValidBodyCksum(pRead->pHead);
-  if (contLen != 0) {
-    wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since body checksum not passed", pRead->pWal->cfg.vgId,
+  code = walValidBodyCksum(pReader->pHead);
+  if (code != 0) {
+    wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since body checksum not passed", pReader->pWal->cfg.vgId,
            ver);
-    pRead->curInvalid = 1;
+    uint32_t readCkSum = walCalcBodyCksum(pReader->pHead->head.body, pReader->pHead->head.bodyLen);
+    uint32_t logCkSum = pReader->pHead->cksumBody;
+    wError("checksum written into log: %u, checksum calculated: %u", logCkSum, readCkSum);
+    pReader->curInvalid = 1;
     terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
     ASSERT(0);
     return -1;
   }
-  pRead->curVersion++;
+  pReader->curVersion++;
 
   return 0;
 }
diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index 491e5b0e08ff190ed9b042170e942738a22e5f36..4eadc92f705da24df20555ffef1bf82d7fca9858 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -289,18 +289,25 @@ int32_t walEndSnapshot(SWal *pWal) {
         newTotSize -= iter->fileSize;
       }
     }
-    char fnameStr[WAL_FILE_LEN];
+    int32_t actualDelete = 0;
+    char    fnameStr[WAL_FILE_LEN];
     // remove file
     for (int i = 0; i < deleteCnt; i++) {
       pInfo = taosArrayGet(pWal->fileInfoSet, i);
       walBuildLogName(pWal, pInfo->firstVer, fnameStr);
-      taosRemoveFile(fnameStr);
+      if (taosRemoveFile(fnameStr) < 0) {
+        goto UPDATE_META;
+      }
       walBuildIdxName(pWal, pInfo->firstVer, fnameStr);
-      taosRemoveFile(fnameStr);
+      if (taosRemoveFile(fnameStr) < 0) {
+        ASSERT(0);
+      }
+      actualDelete++;
     }
 
+  UPDATE_META:
     // make new array, remove files
-    taosArrayPopFrontBatch(pWal->fileInfoSet, deleteCnt);
+    taosArrayPopFrontBatch(pWal->fileInfoSet, actualDelete);
     if (taosArrayGetSize(pWal->fileInfoSet) == 0) {
       pWal->writeCur = -1;
       pWal->vers.firstVer = -1;