diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 1810c49a36d3f86a1685af00acbe4a837ee8d1dc..c59d5184a9460413d3c1bccf32749f5a004f3b0d 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -2678,7 +2678,7 @@ int32_t mndAddIndexImpl(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SStbObj *pSt
 
   if (mndSetAlterStbRedoLogs(pMnode, pTrans, pDb, pStb) != 0) goto _OVER;
   if (mndSetAlterStbCommitLogs(pMnode, pTrans, pDb, pStb) != 0) goto _OVER;
-  if (mndSetAlterStbRedoActions2(pMnode, pTrans, pDb, pStb, alterOriData, alterOriDataLen) != 0) goto _OVER;
+  if (mndSetAlterStbRedoActions2(pMnode, pTrans, pDb, pStb, sql, len) != 0) goto _OVER;
   if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
 
   return code;
diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index b91692498e521bb86a70420118db563329609d7d..3cfa0d89f3da3605cef2b6c83511e54499c29f36 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -129,7 +129,6 @@ int             metaGetTableEntryByName(SMetaReader* pReader, const char* name);
 int             metaAlterCache(SMeta* pMeta, int32_t nPage);
 
 int metaAddIndexToSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
-}
 int metaDropIndexFromSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
 
 int64_t       metaGetTimeSeriesNum(SMeta* pMeta);
diff --git a/source/dnode/vnode/src/meta/metaTable.c b/source/dnode/vnode/src/meta/metaTable.c
index c5f21b252d12215dc758480894509562218a1e7a..b066522f4e0d50a81ea5b2de5e0877a87068d271 100644
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@@ -390,8 +390,166 @@ int metaAlterSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
   return 0;
 }
 int metaAddIndexToSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
-  // impl later
+  SMetaEntry oStbEntry = {0};
+  SMetaEntry nStbEntry = {0};
+
+  TBC     *pUidIdxc = NULL;
+  TBC     *pTbDbc = NULL;
+  void    *pData;
+  int      nData;
+  int64_t  oversion;
+  SDecoder dc = {0};
+  int32_t  ret;
+  int32_t  c = -2;
+  tb_uid_t suid = pReq->suid;
+
+  // get super table
+  if (tdbTbGet(pMeta->pUidIdx, &suid, sizeof(tb_uid_t), &pData, &nData) != 0) {
+    ret = -1;
+    goto _err;
+  }
+
+  // tdbTbcOpen(pMeta->pUidIdx, &pUidIdxc, NULL);
+  // ret = tdbTbcMoveTo(pUidIdxc, &pReq->suid, sizeof(tb_uid_t), &c);
+  // if (ret < 0 || c) {
+  //   tdbTbcClose(pUidIdxc);
+
+  //  terrno = TSDB_CODE_TDB_STB_NOT_EXIST;
+  //  return -1;
+  //}
+
+  // ret = tdbTbcGet(pUidIdxc, NULL, NULL, &pData, &nData);
+  // if (ret < 0) {
+  //   tdbTbcClose(pUidIdxc);
+
+  //  terrno = TSDB_CODE_TDB_STB_NOT_EXIST;
+  //  return -1;
+  //}
+
+  // oversion = ((SUidIdxVal *)pData)[0].version;
+
+  // tdbTbcOpen(pMeta->pTbDb, &pTbDbc, NULL);
+  // ret = tdbTbcMoveTo(pTbDbc, &((STbDbKey){.uid = pReq->suid, .version = oversion}), sizeof(STbDbKey), &c);
+  // if (!(ret == 0 && c == 0)) {
+  //   metaError("meta/table: invalide ret: %" PRId32 " or c: %" PRId32 "alter stb failed.", ret, c);
+  //   return -1;
+  // }
+  // ret = tdbTbcGet(pTbDbc, NULL, NULL, &pData, &nData);
+  // if (ret < 0) {
+  //   tdbTbcClose(pTbDbc);
+
+  //  terrno = TSDB_CODE_TDB_STB_NOT_EXIST;
+  //  return -1;
+  //}
+
+  oStbEntry.pBuf = taosMemoryMalloc(nData);
+  memcpy(oStbEntry.pBuf, pData, nData);
+  tDecoderInit(&dc, oStbEntry.pBuf, nData);
+  metaDecodeEntry(&dc, &oStbEntry);
+
+  nStbEntry.version = version;
+  nStbEntry.type = TSDB_SUPER_TABLE;
+  nStbEntry.uid = pReq->suid;
+  nStbEntry.name = pReq->name;
+  nStbEntry.stbEntry.schemaRow = pReq->schemaRow;
+  nStbEntry.stbEntry.schemaTag = pReq->schemaTag;
+
+  metaWLock(pMeta);
+  // compare two entry
+  if (oStbEntry.stbEntry.schemaRow.version != pReq->schemaRow.version) {
+    metaSaveToSkmDb(pMeta, &nStbEntry);
+  }
+
+  // update table.db
+  metaSaveToTbDb(pMeta, &nStbEntry);
+
+  // update uid index
+  metaUpdateUidIdx(pMeta, &nStbEntry);
+
+  // metaStatsCacheDrop(pMeta, nStbEntry.uid);
+
+  metaULock(pMeta);
+
+  // Get target schema info
+  SSchemaWrapper *pTagSchema = &nStbEntry.stbEntry.schemaTag;
+  if (pTagSchema->nCols == 1 && pTagSchema->pSchema[0].type == TSDB_DATA_TYPE_JSON) {
+    terrno = TSDB_CODE_VND_COL_ALREADY_EXISTS;
+    goto _err;
+  }
+
+  char    *tagName = "tag_col";
+  SSchema *pCol = NULL;
+  int32_t  iCol = 0;
+  for (;;) {
+    pCol = NULL;
+    if (iCol >= pTagSchema->nCols) break;
+    pCol = &pTagSchema->pSchema[iCol];
+    if (strcmp(pCol->name, tagName) == 0) break;
+    iCol++;
+  }
+  if (iCol == 0) {
+    terrno = TSDB_CODE_VND_COL_ALREADY_EXISTS;
+    goto _err;
+  }
+  if (pCol == NULL) {
+    terrno = TSDB_CODE_VND_COL_NOT_EXISTS;
+    goto _err;
+  }
+
+  /*
+   * iterator all pTdDbc by uid and version
+   */
+  TBC *pCtbIdxc = NULL;
+  tdbTbcOpen(pMeta->pCtbIdx, &pCtbIdxc, NULL);
+  int rc = tdbTbcMoveTo(pCtbIdxc, &(SCtbIdxKey){.suid = suid, .uid = INT64_MIN}, sizeof(SCtbIdxKey), &c);
+  if (rc < 0) {
+    tdbTbcClose(pCtbIdxc);
+    goto _err;
+  }
+  for (;;) {
+    void *pKey, *pVal;
+    int   nKey, nVal;
+    rc = tdbTbcNext(pCtbIdxc, &pKey, &nKey, &pVal, &nVal);
+    if (rc < 0) break;
+    if (((SCtbIdxKey *)pKey)->suid != suid) {
+      tdbFree(pKey);
+      tdbFree(pVal);
+      continue;
+    }
+    STagIdxKey *pTagIdxKey = NULL;
+    int32_t     nTagIdxKey;
+
+    const void *pTagData = NULL;
+    int32_t     nTagData = 0;
+
+    SCtbIdxKey *table = (SCtbIdxKey *)pKey;
+    STagVal     tagVal = {.cid = pCol->colId};
+    tTagGet((const STag *)pVal, &tagVal);
+    if (IS_VAR_DATA_TYPE(pCol->type)) {
+      pTagData = tagVal.pData;
+      nTagData = (int32_t)tagVal.nData;
+    } else {
+      pTagData = &(tagVal.i64);
+      nTagData = tDataTypes[pCol->type].bytes;
+    }
+
+    if (metaCreateTagIdxKey(suid, pCol->colId, pTagData, nTagData, pCol->type, table->uid, &pTagIdxKey, &nTagIdxKey) <
+        0) {
+      metaDestroyTagIdxKey(pTagIdxKey);
+      goto _err;
+    }
+    tdbTbUpsert(pMeta->pTagIdx, pTagIdxKey, nTagIdxKey, NULL, 0, pMeta->txn);
+    metaDestroyTagIdxKey(pTagIdxKey);
+  }
+
+  if (oStbEntry.pBuf) taosMemoryFree(oStbEntry.pBuf);
+  tDecoderClear(&dc);
+  tdbTbcClose(pTbDbc);
+  tdbTbcClose(pUidIdxc);
+
   return TSDB_CODE_SUCCESS;
+_err:
+  return TSDB_CODE_VND_COL_ALREADY_EXISTS;
 }
 int metaDropIndexFromSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
   // impl later
@@ -1292,7 +1450,7 @@ static int metaAddTagIndex(SMeta *pMeta, int64_t version, SVAlterTbReq *pAlterTb
     goto _err;
   }
 
-  // Get targe schema info
+  // Get target schema info
   SSchemaWrapper *pTagSchema = &stbEntry.stbEntry.schemaTag;
   if (pTagSchema->nCols == 1 && pTagSchema->pSchema[0].type == TSDB_DATA_TYPE_JSON) {
     terrno = TSDB_CODE_VND_COL_ALREADY_EXISTS;
@@ -1352,7 +1510,7 @@ static int metaAddTagIndex(SMeta *pMeta, int64_t version, SVAlterTbReq *pAlterTb
       pTagData = &(tagVal.i64);
       nTagData = tDataTypes[pCol->type].bytes;
     }
-    if (metaCreateTagIdxKey(uid, pCol->colId, pTagData, nTagData, pCol->type, uid, &pTagIdxKey, &nTagIdxKey) < 0) {
+    if (metaCreateTagIdxKey(suid, pCol->colId, pTagData, nTagData, pCol->type, uid, &pTagIdxKey, &nTagIdxKey) < 0) {
       metaDestroyTagIdxKey(pTagIdxKey);
       goto _err;
     }
diff --git a/source/libs/index/src/indexCache.c b/source/libs/index/src/indexCache.c
index 0bb454571adebae9695ae07cf7ff6af4efd9e95f..ffca6ad97fb9575b68730904ccc910dfbd3ce9c5 100644
--- a/source/libs/index/src/indexCache.c
+++ b/source/libs/index/src/indexCache.c
@@ -22,8 +22,8 @@
 #define MAX_INDEX_KEY_LEN 256  // test only, change later
 
 #define MEM_TERM_LIMIT     10 * 10000
-#define MEM_THRESHOLD      8 * 512 * 1024  // 8M
-#define MEM_SIGNAL_QUIT    MEM_THRESHOLD * 20
+#define MEM_THRESHOLD      128 * 1024 * 1024  // 8M
+#define MEM_SIGNAL_QUIT    MEM_THRESHOLD * 5
 #define MEM_ESTIMATE_RADIO 1.5
 
 static void idxMemRef(MemTable* tbl);