diff --git a/source/dnode/mnode/impl/test/sdb/sdbTest.cpp b/source/dnode/mnode/impl/test/sdb/sdbTest.cpp
index f07e0af113..d078098bd0 100644
--- a/source/dnode/mnode/impl/test/sdb/sdbTest.cpp
+++ b/source/dnode/mnode/impl/test/sdb/sdbTest.cpp
@@ -343,6 +343,8 @@ int32_t strDefault(SMnode *pMnode) {
   pRaw = strEncode(&strObj);
   sdbSetRawStatus(pRaw, SDB_STATUS_READY);
   if (sdbWriteWithoutFree(pMnode->pSdb, pRaw) != 0) return -1;
+
+  EXPECT_EQ(sdbGetRawTotalSize(pRaw), 79);
   sdbFreeRaw(pRaw);
 
   return 0;
@@ -386,36 +388,36 @@ TEST_F(MndTestSdb, 01_Write_Str) {
   opt.path = "/tmp/mnode_test_sdb";
   taosRemoveDir(opt.path);
 
-  SSdbTable strTable1 = {
-      .sdbType = SDB_USER,
-      .keyType = SDB_KEY_BINARY,
-      .deployFp = (SdbDeployFp)strDefault,
-      .encodeFp = (SdbEncodeFp)strEncode,
-      .decodeFp = (SdbDecodeFp)strDecode,
-      .insertFp = (SdbInsertFp)strInsert,
-      .updateFp = (SdbUpdateFp)strUpdate,
-      .deleteFp = (SdbDeleteFp)strDelete,
-  };
+  SSdbTable strTable1;
+  memset(&strTable1, 0, sizeof(SSdbTable));
+  strTable1.sdbType = SDB_USER;
+  strTable1.keyType = SDB_KEY_BINARY;
+  strTable1.deployFp = (SdbDeployFp)strDefault;
+  strTable1.encodeFp = (SdbEncodeFp)strEncode;
+  strTable1.decodeFp = (SdbDecodeFp)strDecode;
+  strTable1.insertFp = (SdbInsertFp)strInsert;
+  strTable1.updateFp = (SdbUpdateFp)strUpdate;
+  strTable1.deleteFp = (SdbDeleteFp)strDelete;
 
-  SSdbTable strTable2 = {
-      .sdbType = SDB_VGROUP,
-      .keyType = SDB_KEY_INT32,
-      .encodeFp = (SdbEncodeFp)i32Encode,
-      .decodeFp = (SdbDecodeFp)i32Decode,
-      .insertFp = (SdbInsertFp)i32Insert,
-      .updateFp = (SdbUpdateFp)i32Update,
-      .deleteFp = (SdbDeleteFp)i32Delete,
-  };
+  SSdbTable strTable2;
+  memset(&strTable2, 0, sizeof(SSdbTable));
+  strTable2.sdbType = SDB_VGROUP;
+  strTable2.keyType = SDB_KEY_INT32;
+  strTable2.encodeFp = (SdbEncodeFp)i32Encode;
+  strTable2.decodeFp = (SdbDecodeFp)i32Decode;
+  strTable2.insertFp = (SdbInsertFp)i32Insert;
+  strTable2.updateFp = (SdbUpdateFp)i32Update;
+  strTable2.deleteFp = (SdbDeleteFp)i32Delete;
 
-  SSdbTable strTable3 = {
-      .sdbType = SDB_CONSUMER,
-      .keyType = SDB_KEY_INT64,
-      .encodeFp = (SdbEncodeFp)i64Encode,
-      .decodeFp = (SdbDecodeFp)i64Decode,
-      .insertFp = (SdbInsertFp)i64Insert,
-      .updateFp = (SdbUpdateFp)i64Update,
-      .deleteFp = (SdbDeleteFp)i64Delete,
-  };
+  SSdbTable strTable3;
+  memset(&strTable3, 0, sizeof(SSdbTable));
+  strTable3.sdbType = SDB_CONSUMER;
+  strTable3.keyType = SDB_KEY_INT64;
+  strTable3.encodeFp = (SdbEncodeFp)i64Encode;
+  strTable3.decodeFp = (SdbDecodeFp)i64Decode;
+  strTable3.insertFp = (SdbInsertFp)i64Insert;
+  strTable3.updateFp = (SdbUpdateFp)i64Update;
+  strTable3.deleteFp = (SdbDeleteFp)i64Delete;
 
   pSdb = sdbInit(&opt);
   mnode.pSdb = pSdb;
@@ -730,36 +732,36 @@ TEST_F(MndTestSdb, 01_Read_Str) {
   opt.pMnode = &mnode;
   opt.path = "/tmp/mnode_test_sdb";
 
-  SSdbTable strTable1 = {
-      .sdbType = SDB_USER,
-      .keyType = SDB_KEY_BINARY,
-      .deployFp = (SdbDeployFp)strDefault,
-      .encodeFp = (SdbEncodeFp)strEncode,
-      .decodeFp = (SdbDecodeFp)strDecode,
-      .insertFp = (SdbInsertFp)strInsert,
-      .updateFp = (SdbUpdateFp)strUpdate,
-      .deleteFp = (SdbDeleteFp)strDelete,
-  };
+  SSdbTable strTable1;
+  memset(&strTable1, 0, sizeof(SSdbTable));
+  strTable1.sdbType = SDB_USER;
+  strTable1.keyType = SDB_KEY_BINARY;
+  strTable1.deployFp = (SdbDeployFp)strDefault;
+  strTable1.encodeFp = (SdbEncodeFp)strEncode;
+  strTable1.decodeFp = (SdbDecodeFp)strDecode;
+  strTable1.insertFp = (SdbInsertFp)strInsert;
+  strTable1.updateFp = (SdbUpdateFp)strUpdate;
+  strTable1.deleteFp = (SdbDeleteFp)strDelete;
 
-  SSdbTable strTable2 = {
-      .sdbType = SDB_VGROUP,
-      .keyType = SDB_KEY_INT32,
-      .encodeFp = (SdbEncodeFp)i32Encode,
-      .decodeFp = (SdbDecodeFp)i32Decode,
-      .insertFp = (SdbInsertFp)i32Insert,
-      .updateFp = (SdbUpdateFp)i32Update,
-      .deleteFp = (SdbDeleteFp)i32Delete,
-  };
+  SSdbTable strTable2;
+  memset(&strTable2, 0, sizeof(SSdbTable));
+  strTable2.sdbType = SDB_VGROUP;
+  strTable2.keyType = SDB_KEY_INT32;
+  strTable2.encodeFp = (SdbEncodeFp)i32Encode;
+  strTable2.decodeFp = (SdbDecodeFp)i32Decode;
+  strTable2.insertFp = (SdbInsertFp)i32Insert;
+  strTable2.updateFp = (SdbUpdateFp)i32Update;
+  strTable2.deleteFp = (SdbDeleteFp)i32Delete;
 
-  SSdbTable strTable3 = {
-      .sdbType = SDB_CONSUMER,
-      .keyType = SDB_KEY_INT64,
-      .encodeFp = (SdbEncodeFp)i64Encode,
-      .decodeFp = (SdbDecodeFp)i64Decode,
-      .insertFp = (SdbInsertFp)i64Insert,
-      .updateFp = (SdbUpdateFp)i64Update,
-      .deleteFp = (SdbDeleteFp)i64Delete,
-  };
+  SSdbTable strTable3;
+  memset(&strTable3, 0, sizeof(SSdbTable));
+  strTable3.sdbType = SDB_CONSUMER;
+  strTable3.keyType = SDB_KEY_INT64;
+  strTable3.encodeFp = (SdbEncodeFp)i64Encode;
+  strTable3.decodeFp = (SdbDecodeFp)i64Decode;
+  strTable3.insertFp = (SdbInsertFp)i64Insert;
+  strTable3.updateFp = (SdbUpdateFp)i64Update;
+  strTable3.deleteFp = (SdbDeleteFp)i64Delete;
 
   pSdb = sdbInit(&opt);
   mnode.pSdb = pSdb;
diff --git a/source/dnode/mnode/sdb/inc/sdbInt.h b/source/dnode/mnode/sdb/inc/sdbInt.h
index 563fc72d00..23c0f8a01c 100644
--- a/source/dnode/mnode/sdb/inc/sdbInt.h
+++ b/source/dnode/mnode/sdb/inc/sdbInt.h
@@ -31,8 +31,6 @@ extern "C" {
 #define mDebug(...) { if (mDebugFlag & DEBUG_DEBUG) { taosPrintLog("MND ", DEBUG_DEBUG, mDebugFlag, __VA_ARGS__); }}
 #define mTrace(...) { if (mDebugFlag & DEBUG_TRACE) { taosPrintLog("MND ", DEBUG_TRACE, mDebugFlag, __VA_ARGS__); }}
 
-#define SDB_MAX_SIZE (32 * 1024)
-
 typedef struct SSdbRaw {
   int8_t  type;
   int8_t  status;
diff --git a/source/dnode/mnode/sdb/src/sdb.c b/source/dnode/mnode/sdb/src/sdb.c
index c64c5310f3..51f40c12cd 100644
--- a/source/dnode/mnode/sdb/src/sdb.c
+++ b/source/dnode/mnode/sdb/src/sdb.c
@@ -28,12 +28,12 @@ SSdb *sdbInit(SSdbOpt *pOption) {
     return NULL;
   }
 
-  char path[PATH_MAX + 100];
-  snprintf(path, PATH_MAX + 100, "%s%sdata", pOption->path, TD_DIRSEP);
+  char path[PATH_MAX + 100] = {0};
+  snprintf(path, sizeof(path), "%s%sdata", pOption->path, TD_DIRSEP);
   pSdb->currDir = strdup(path);
-  snprintf(path, PATH_MAX + 100, "%s%ssync", pOption->path, TD_DIRSEP);
+  snprintf(path, sizeof(path), "%s%ssync", pOption->path, TD_DIRSEP);
   pSdb->syncDir = strdup(path);
-  snprintf(path, PATH_MAX + 100, "%s%stmp", pOption->path, TD_DIRSEP);
+  snprintf(path, sizeof(path), "%s%stmp", pOption->path, TD_DIRSEP);
   pSdb->tmpDir = strdup(path);
   if (pSdb->currDir == NULL || pSdb->currDir == NULL || pSdb->currDir == NULL) {
     sdbCleanup(pSdb);
diff --git a/source/dnode/mnode/sdb/src/sdbFile.c b/source/dnode/mnode/sdb/src/sdbFile.c
index cb51e381c1..4bf69bd5e7 100644
--- a/source/dnode/mnode/sdb/src/sdbFile.c
+++ b/source/dnode/mnode/sdb/src/sdbFile.c
@@ -66,7 +66,7 @@ static int32_t sdbReadFileHead(SSdb *pSdb, TdFilePtr pFile) {
   }
 
   for (int32_t i = 0; i < SDB_TABLE_SIZE; ++i) {
-    int64_t ver = -1;
+    int64_t ver = 0;
     ret = taosReadFile(pFile, &ver, sizeof(int64_t));
     if (ret < 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
@@ -209,7 +209,7 @@ int32_t sdbReadFile(SSdb *pSdb) {
     code = sdbWriteWithoutFree(pSdb, pRaw);
     if (code != 0) {
       mError("failed to read file:%s since %s", file, terrstr());
-      goto PARSE_SDB_DATA_ERROR;
+      goto _OVER;
     }
   }
 
@@ -218,7 +218,7 @@ int32_t sdbReadFile(SSdb *pSdb) {
   memcpy(pSdb->tableVer, tableVer, sizeof(tableVer));
   mDebug("read file:%s successfully, ver:%" PRId64, file, pSdb->lastCommitVer);
 
-PARSE_SDB_DATA_ERROR:
+_OVER:
   taosCloseFile(&pFile);
   sdbFreeRaw(pRaw);