diff --git a/src/vnode/tsdb/inc/tsdb.h b/src/vnode/tsdb/inc/tsdb.h
index e12f51fd44cb768ba530441705acce1f3e1a0cb6..4964ac673f1b25d351d3eb5f0e8e146d510776db 100644
--- a/src/vnode/tsdb/inc/tsdb.h
+++ b/src/vnode/tsdb/inc/tsdb.h
@@ -58,6 +58,7 @@ int32_t        tsdbDropRepo(tsdb_repo_t *repo);
 tsdb_repo_t *  tsdbOpenRepo(char *tsdbDir);
 int32_t        tsdbCloseRepo(tsdb_repo_t *repo);
 int32_t        tsdbConfigRepo(tsdb_repo_t *repo, STsdbCfg *pCfg);
+int32_t        tsdbTriggerCommit(tsdb_repo_t *repo);
 
 // --------- TSDB TABLE DEFINITION
 typedef struct {
diff --git a/src/vnode/tsdb/inc/tsdbMeta.h b/src/vnode/tsdb/inc/tsdbMeta.h
index b18d16d0d94a6e242cb2f198ddfc960b366ea629..38f0818dfba826ee2300b6c0f2eee3fe2232423f 100644
--- a/src/vnode/tsdb/inc/tsdbMeta.h
+++ b/src/vnode/tsdb/inc/tsdbMeta.h
@@ -35,20 +35,21 @@ extern "C" {
 
 // ---------- TSDB TABLE DEFINITION
 typedef struct STable {
-  int8_t          type;
-  STableId        tableId;
-  int32_t         superUid;  // Super table UID
-  int32_t         sversion;
-  STSchema *      schema;
-  STSchema *      tagSchema;
-  SDataRow        tagVal;
+  int8_t    type;
+  STableId  tableId;
+  int32_t   superUid;  // Super table UID
+  int32_t   sversion;
+  STSchema *schema;
+  STSchema *tagSchema;
+  SDataRow  tagVal;
   union {
     void *pData;   // For TSDB_NORMAL_TABLE and TSDB_CHILD_TABLE, it is the skiplist for cache data
     void *pIndex;  // For TSDB_SUPER_TABLE, it is the skiplist index
   } content;
+  void *         iData;          // Skiplist to commit
   void *         eventHandler;   // TODO
   void *         streamHandler;  // TODO
-  struct STable *next; // TODO: remove the next
+  struct STable *next;           // TODO: remove the next
 } STable;
 
 void *  tsdbEncodeTable(STable *pTable, int *contLen);
diff --git a/src/vnode/tsdb/src/tsdbMain.c b/src/vnode/tsdb/src/tsdbMain.c
index 87cd23eb92e502fb959d7338b1f3adcc974e0067..34fca7e428e051be33d855af21949f0618b5aac1 100644
--- a/src/vnode/tsdb/src/tsdbMain.c
+++ b/src/vnode/tsdb/src/tsdbMain.c
@@ -64,7 +64,10 @@ typedef struct _tsdb_repo {
   // Disk tier handle for multi-tier storage
   void *diskTier;
 
-  pthread_mutex_t tsdbMutex;
+  pthread_mutex_t mutex;
+
+  int commit;
+  pthread_t commitThread;
 
   // A limiter to monitor the resources used by tsdb
   void *limiter;
@@ -80,6 +83,7 @@ static int     tsdbOpenMetaFile(char *tsdbDir);
 static int32_t tsdbInsertDataToTable(tsdb_repo_t *repo, SSubmitBlk *pBlock);
 static int32_t tsdbRestoreCfg(STsdbRepo *pRepo, STsdbCfg *pCfg);
 static int32_t tsdbGetDataDirName(STsdbRepo *pRepo, char *fname);
+static void *  tsdbCommitToFile(void *arg);
 
 #define TSDB_GET_TABLE_BY_ID(pRepo, sid) (((STSDBRepo *)pRepo)->pTableList)[sid]
 #define TSDB_GET_TABLE_BY_NAME(pRepo, name)
@@ -298,6 +302,18 @@ int32_t tsdbConfigRepo(tsdb_repo_t *repo, STsdbCfg *pCfg) {
   return 0;
 }
 
+int32_t tsdbTriggerCommit(tsdb_repo_t *repo) {
+  STsdbRepo *pRepo = (STsdbRepo *)repo;
+
+  if (pthread_mutex_lock(&(pRepo->mutex)) < 0) return -1;
+  if (pRepo->commit) return 0;
+  pRepo->commit = 1;
+  pthread_create(&(pRepo->commitThread), NULL, tsdbCommitToFile, (void *)repo);
+  pthread_mutex_unlock(&(pRepo->mutex));
+
+  return 0;
+}
+
 /**
  * Get the TSDB repository information, including some statistics
  * @param pRepo the TSDB repository handle
@@ -673,4 +689,10 @@ static int32_t tsdbInsertDataToTable(tsdb_repo_t *repo, SSubmitBlk *pBlock) {
   }
 
   return 0;
+}
+
+static void *tsdbCommitToFile(void *arg) {
+  STsdbRepo *pRepo = (STsdbRepo *)arg;
+  // TODO
+  return NULL;
 }
\ No newline at end of file