diff --git a/include/util/tdef.h b/include/util/tdef.h
index 57fde32bed5d27bee4f429644a4b4623c2abe64e..21f879cd93dba22b48dc05b69b69453936808858 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -359,8 +359,8 @@ typedef enum ELogicConditionType {
 #define TSDB_DB_SCHEMALESS_ON           1
 #define TSDB_DB_SCHEMALESS_OFF          0
 #define TSDB_DEFAULT_DB_SCHEMALESS      TSDB_DB_SCHEMALESS_OFF
-#define TSDB_MIN_SST_TRIGGER            1
-#define TSDB_MAX_SST_TRIGGER            128
+#define TSDB_MIN_STT_TRIGGER            1
+#define TSDB_MAX_STT_TRIGGER            16
 #define TSDB_DEFAULT_SST_TRIGGER        8
 #define TSDB_MIN_HASH_PREFIX            0
 #define TSDB_MAX_HASH_PREFIX            128
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index feb69bf74f642505ecc0949416d08290833a9343..84bca239d2ca3edb728ddc4070530256b381b381 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -338,7 +338,7 @@ static int32_t mndCheckDbCfg(SMnode *pMnode, SDbCfg *pCfg) {
   if (pCfg->walRetentionSize < TSDB_DB_MIN_WAL_RETENTION_SIZE) return -1;
   if (pCfg->walRollPeriod < TSDB_DB_MIN_WAL_ROLL_PERIOD) return -1;
   if (pCfg->walSegmentSize < TSDB_DB_MIN_WAL_SEGMENT_SIZE) return -1;
-  if (pCfg->sstTrigger < TSDB_MIN_SST_TRIGGER || pCfg->sstTrigger > TSDB_MAX_SST_TRIGGER) return -1;
+  if (pCfg->sstTrigger < TSDB_MIN_STT_TRIGGER || pCfg->sstTrigger > TSDB_MAX_STT_TRIGGER) return -1;
   if (pCfg->hashPrefix < TSDB_MIN_HASH_PREFIX || pCfg->hashPrefix > TSDB_MAX_HASH_PREFIX) return -1;
   if (pCfg->hashSuffix < TSDB_MIN_HASH_SUFFIX || pCfg->hashSuffix > TSDB_MAX_HASH_SUFFIX) return -1;
 
diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index 0575fa91f010c88d53ff26fe6619265d6b79b62a..7eb907c5a62f6548fa358d02965fd68dcf35a856 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -69,7 +69,6 @@ typedef struct SLDataIter    SLDataIter;
 
 #define TSDB_FILE_DLMT         ((uint32_t)0xF00AFA0F)
 #define TSDB_MAX_SUBBLOCKS     8
-#define TSDB_MAX_STT_FILE      16
 #define TSDB_FHDR_SIZE         512
 #define TSDB_DEFAULT_PAGE_SIZE 4096
 
@@ -571,7 +570,7 @@ struct SDFileSet {
   SDataFile *pDataF;
   SSmaFile  *pSmaF;
   uint8_t    nSttF;
-  SSttFile  *aSttF[TSDB_MAX_STT_FILE];
+  SSttFile  *aSttF[TSDB_MAX_STT_TRIGGER];
 };
 
 struct SRowIter {
@@ -621,7 +620,7 @@ struct SDataFWriter {
   SHeadFile fHead;
   SDataFile fData;
   SSmaFile  fSma;
-  SSttFile  fStt[TSDB_MAX_STT_FILE];
+  SSttFile  fStt[TSDB_MAX_STT_TRIGGER];
 
   uint8_t *aBuf[4];
 };
@@ -632,7 +631,7 @@ struct SDataFReader {
   STsdbFD   *pHeadFD;
   STsdbFD   *pDataFD;
   STsdbFD   *pSmaFD;
-  STsdbFD   *aSttFD[TSDB_MAX_STT_FILE];
+  STsdbFD   *aSttFD[TSDB_MAX_STT_TRIGGER];
   uint8_t   *aBuf[3];
 };
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbCommit.c b/source/dnode/vnode/src/tsdb/tsdbCommit.c
index 12a81a066062b0d6a2fb7cfae549bd95cdbe040a..4b5df2d7a00e2b2ad5471ca38340eeab4be95f3f 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCommit.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCommit.c
@@ -71,7 +71,7 @@ typedef struct {
     SDataIter *pIter;
     SRBTree    rbt;
     SDataIter  dataIter;
-    SDataIter  aDataIter[TSDB_MAX_STT_FILE];
+    SDataIter  aDataIter[TSDB_MAX_STT_TRIGGER];
     int8_t     toLastOnly;
   };
   struct {
@@ -787,7 +787,7 @@ static int32_t tsdbCommitDataStart(SCommitter *pCommitter) {
   if (code) goto _exit;
 
   // merger
-  for (int32_t iStt = 0; iStt < TSDB_MAX_STT_FILE; iStt++) {
+  for (int32_t iStt = 0; iStt < TSDB_MAX_STT_TRIGGER; iStt++) {
     SDataIter *pIter = &pCommitter->aDataIter[iStt];
     pIter->aSttBlk = taosArrayInit(0, sizeof(SSttBlk));
     if (pIter->aSttBlk == NULL) {
@@ -829,7 +829,7 @@ static void tsdbCommitDataEnd(SCommitter *pCommitter) {
   tBlockDataDestroy(&pCommitter->dReader.bData, 1);
 
   // merger
-  for (int32_t iStt = 0; iStt < TSDB_MAX_STT_FILE; iStt++) {
+  for (int32_t iStt = 0; iStt < TSDB_MAX_STT_TRIGGER; iStt++) {
     SDataIter *pIter = &pCommitter->aDataIter[iStt];
     taosArrayDestroy(pIter->aSttBlk);
     tBlockDataDestroy(&pIter->bData, 1);
diff --git a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
index 128bfe37dab22a8bc7dcc0211f57276450fb23fd..b171d52dfc8e6cdfe7642c278249f4d7bf0e5e35 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
@@ -780,7 +780,7 @@ int32_t tsdbDataFReaderClose(SDataFReader **ppReader) {
   tsdbCloseFile(&(*ppReader)->pSmaFD);
 
   // stt
-  for (int32_t iStt = 0; iStt < TSDB_MAX_STT_FILE; iStt++) {
+  for (int32_t iStt = 0; iStt < TSDB_MAX_STT_TRIGGER; iStt++) {
     if ((*ppReader)->aSttFD[iStt]) {
       tsdbCloseFile(&(*ppReader)->aSttFD[iStt]);
     }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index ad9a467dee529bbd65a6602fd6204afddb6de846..91787f5a72f42c1c75393c73c60ca4815c73993d 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -3770,7 +3770,7 @@ static int32_t checkDatabaseOptions(STranslateContext* pCxt, const char* pDbName
         checkDbRangeOption(pCxt, "walSegmentSize", pOptions->walSegmentSize, TSDB_DB_MIN_WAL_SEGMENT_SIZE, INT32_MAX);
   }
   if (TSDB_CODE_SUCCESS == code) {
-    code = checkDbRangeOption(pCxt, "sstTrigger", pOptions->sstTrigger, TSDB_MIN_SST_TRIGGER, TSDB_MAX_SST_TRIGGER);
+    code = checkDbRangeOption(pCxt, "sstTrigger", pOptions->sstTrigger, TSDB_MIN_STT_TRIGGER, TSDB_MAX_STT_TRIGGER);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = checkDbRangeOption(pCxt, "tablePrefix", pOptions->tablePrefix, TSDB_MIN_HASH_PREFIX, TSDB_MAX_HASH_PREFIX);
@@ -6606,7 +6606,7 @@ static int32_t buildUpdateTagValReq(STranslateContext* pCxt, SAlterTableStmt* pS
   SDataType targetDt = schemaToDataType(pTableMeta->tableInfo.precision, pSchema);
 
   if (QUERY_NODE_VALUE != pStmt->pVal->node.type) {
-    SValueNode *pVal = NULL;
+    SValueNode* pVal = NULL;
     pCxt->errCode = createTagValFromExpr(pCxt, targetDt, (SNode*)pStmt->pVal, &pVal);
     if (pCxt->errCode) {
       return pCxt->errCode;