diff --git a/src/tsdb/src/tsdbCommit.c b/src/tsdb/src/tsdbCommit.c
index db675d0427901f55e676a17592f0c131820e8718..0b1ca0641b0e0826bd971bfe4d129421c3a54b54 100644
--- a/src/tsdb/src/tsdbCommit.c
+++ b/src/tsdb/src/tsdbCommit.c
@@ -123,7 +123,7 @@ _err:
 
 int tsdbApplyRtnOnFSet(STsdbRepo *pRepo, SDFileSet *pSet, SRtn *pRtn) {
   SDiskID   did;
-  SDFileSet nSet;
+  SDFileSet nSet = {0};
   STsdbFS * pfs = REPO_FS(pRepo);
   int       level;
 
diff --git a/src/tsdb/src/tsdbFS.c b/src/tsdb/src/tsdbFS.c
index 1ef516b305ea5c41371d735f8f9d06a232e5f982..297a7ce6f13fccf12f080728bebc34354a09b533 100644
--- a/src/tsdb/src/tsdbFS.c
+++ b/src/tsdb/src/tsdbFS.c
@@ -91,9 +91,7 @@ static int tsdbEncodeDFileSetArray(void **buf, SArray *pArray) {
 }
 
 static int tsdbDecodeDFileSetArray(void **originBuf, void *buf, SArray *pArray, SFSHeader *pSFSHeader) {
-  uint64_t  nset;
-  SDFileSet dset;
-  dset.ver = TSDB_FSET_VER_0;  // default value
+  uint64_t  nset = 0;
 
   taosArrayClear(pArray);
 
@@ -113,6 +111,7 @@ static int tsdbDecodeDFileSetArray(void **originBuf, void *buf, SArray *pArray,
   }
 
   for (size_t i = 0; i < nset; i++) {
+    SDFileSet dset = {0}; // ver is TSDB_FSET_VER_0(0) at default
     buf = tsdbDecodeDFileSet(buf, &dset, pSFSHeader->version);
     taosArrayPush(pArray, (void *)(&dset));
   }
diff --git a/src/tsdb/src/tsdbSync.c b/src/tsdb/src/tsdbSync.c
index 0e01cf37bb264b1d2eb36b7332e2ebea28edfce9..834ed8b5a8fdd8695e299d5e4947780dfa5dad83 100644
--- a/src/tsdb/src/tsdbSync.c
+++ b/src/tsdb/src/tsdbSync.c
@@ -457,7 +457,7 @@ static int32_t tsdbSyncRecvDFileSetArray(SSyncH *pSynch) {
 
         // Create local files and copy from remote
         SDiskID   did;
-        SDFileSet fset;
+        SDFileSet fset = {0};
 
         tfsAllocDisk(fidLevel, &(did.level), &(did.id));
         if (did.level == TFS_UNDECIDED_LEVEL) {