diff --git a/include/common/taosdef.h b/include/common/taosdef.h
index 69c2618ac8..99360b8d3f 100644
--- a/include/common/taosdef.h
+++ b/include/common/taosdef.h
@@ -56,6 +56,11 @@ typedef enum {
   TSDB_STATIS_NONE = 1,  // statis part not exist
 } ETsdbStatisStatus;
 
+typedef enum {
+  TSDB_SMA_STAT_OK = 0,       // ready to provide service
+  TSDB_SMA_STAT_EXPIRED = 1,  // not ready or expired
+} ETsdbSmaStat;
+
 extern char *qtypeStr[];
 
 #ifdef __cplusplus
diff --git a/include/os/osDir.h b/include/os/osDir.h
index 223c603352..6cf28fb878 100644
--- a/include/os/osDir.h
+++ b/include/os/osDir.h
@@ -16,10 +16,24 @@
 #ifndef _TD_OS_DIR_H_
 #define _TD_OS_DIR_H_
 
+// If the error is in a third-party library, place this header file under the third-party library header file.
+#ifndef ALLOW_FORBID_FUNC
+    #define opendir OPENDIR_FUNC_TAOS_FORBID
+    #define readdir READDIR_FUNC_TAOS_FORBID
+    #define closedir CLOSEDIR_FUNC_TAOS_FORBID
+    #define dirname DIRNAME_FUNC_TAOS_FORBID
+    #undef basename
+    #define basename BASENAME_FUNC_TAOS_FORBID
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef struct TdDir *TdDirPtr;
+typedef struct TdDirEntry *TdDirEntryPtr;
+
+
 void    taosRemoveDir(const char *dirname);
 bool    taosDirExist(char *dirname);
 int32_t taosMkDir(const char *dirname);
@@ -27,6 +41,14 @@ void    taosRemoveOldFiles(const char *dirname, int32_t keepDays);
 int32_t taosExpandDir(const char *dirname, char *outname, int32_t maxlen);
 int32_t taosRealPath(char *dirname, int32_t maxlen);
 bool    taosIsDir(const char *dirname);
+char*   taosDirName(char *dirname);
+char*   taosDirEntryBaseName(char *dirname);
+
+TdDirPtr      taosOpenDir(const char *dirname);
+TdDirEntryPtr taosReadDir(TdDirPtr pDir);
+bool          taosDirEntryIsDir(TdDirEntryPtr pDirEntry);
+char*         taosGetDirEntryName(TdDirEntryPtr pDirEntry);
+int32_t       taosCloseDir(TdDirPtr pDir);
 
 #ifdef __cplusplus
 }
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 319bd9fde6..b6dd90a4e2 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -59,7 +59,7 @@ typedef struct {
   SWalCfg  walCfg;
   uint32_t hashBegin;
   uint32_t hashEnd;
-  int8_t   hashMethod;  
+  int8_t   hashMethod;
 } SVnodeCfg;
 
 typedef struct {
@@ -202,6 +202,22 @@ int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad);
 
 /* ------------------------- TQ READ --------------------------- */
 
+enum {
+  TQ_STREAM_TOKEN__DATA = 1,
+  TQ_STREAM_TOKEN__WATERMARK,
+  TQ_STREAM_TOKEN__CHECKPOINT,
+};
+
+typedef struct {
+  int8_t type;
+  int8_t reserved[7];
+  union {
+    void   *data;
+    int64_t wmTs;
+    int64_t checkpointId;
+  };
+} STqStreamToken;
+
 STqReadHandle *tqInitSubmitMsgScanner(SMeta *pMeta);
 
 static FORCE_INLINE void tqReadHandleSetColIdList(STqReadHandle *pReadHandle, SArray *pColIdList) {
diff --git a/source/dnode/vnode/src/inc/tqPush.h b/source/dnode/vnode/src/inc/tqPush.h
index 32fd7c3ddf..a6121c5dc1 100644
--- a/source/dnode/vnode/src/inc/tqPush.h
+++ b/source/dnode/vnode/src/inc/tqPush.h
@@ -16,9 +16,11 @@
 #ifndef _TQ_PUSH_H_
 #define _TQ_PUSH_H_
 
+#include "executor.h"
 #include "thash.h"
 #include "trpc.h"
 #include "ttimer.h"
+#include "vnode.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -39,11 +41,12 @@ typedef struct {
 } STqClientPusher;
 
 typedef struct {
-  int8_t  type;
-  int8_t  nodeType;
-  int8_t  reserved[6];
-  int64_t streamId;
-  SEpSet  epSet;
+  int8_t      type;
+  int8_t      nodeType;
+  int8_t      reserved[6];
+  int64_t     streamId;
+  qTaskInfo_t task;
+  // TODO sync function
 } STqStreamPusher;
 
 typedef struct {
diff --git a/source/dnode/vnode/src/inc/tsdbDef.h b/source/dnode/vnode/src/inc/tsdbDef.h
index 96a76ea7d4..1451ac9685 100644
--- a/source/dnode/vnode/src/inc/tsdbDef.h
+++ b/source/dnode/vnode/src/inc/tsdbDef.h
@@ -52,6 +52,7 @@ struct STsdb {
   STsdbFS *             fs;
   SMeta *               pMeta;
   STfs *                pTfs;
+  SSmaStat *            pSmaStat;
 };
 
 #define REPO_ID(r) ((r)->vgId)
diff --git a/source/dnode/vnode/src/inc/tsdbFS.h b/source/dnode/vnode/src/inc/tsdbFS.h
index 641255a294..173e991631 100644
--- a/source/dnode/vnode/src/inc/tsdbFS.h
+++ b/source/dnode/vnode/src/inc/tsdbFS.h
@@ -42,7 +42,10 @@ typedef struct {
 typedef struct {
   STsdbFSMeta meta;  // FS meta
   SArray *    df;    // data file array
-  SArray *    smaf;  // sma data file array
+
+  // SArray *    v2f100.tsma.index_name
+  
+  SArray *    smaf;  // sma data file array    v2f1900.tsma.index_name
 } SFSStatus;
 
 typedef struct {
diff --git a/source/dnode/vnode/src/inc/tsdbSma.h b/source/dnode/vnode/src/inc/tsdbSma.h
index e4de7a6685..6e4ad909ae 100644
--- a/source/dnode/vnode/src/inc/tsdbSma.h
+++ b/source/dnode/vnode/src/inc/tsdbSma.h
@@ -16,6 +16,8 @@
 #ifndef _TD_TSDB_SMA_H_
 #define _TD_TSDB_SMA_H_
 
+typedef struct SSmaStat SSmaStat;
+
 // insert/update interface
 int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, STSma *param, STSmaData *pData);
 int32_t tsdbInsertRSmaDataImpl(STsdb *pTsdb, SRSma *param, STSmaData *pData);
@@ -26,13 +28,14 @@ int32_t tsdbInsertRSmaDataImpl(STsdb *pTsdb, SRSma *param, STSmaData *pData);
 int32_t tsdbGetTSmaDataImpl(STsdb *pTsdb, STSma *param, STSmaData *pData, STimeWindow *queryWin, int32_t nMaxResult);
 
 // management interface
-int32_t tsdbGetTSmaStatus(STsdb *pTsdb, STSma *param, void* result);
+int32_t tsdbUpdateExpiredWindow(STsdb *pTsdb, char *msg);
+int32_t tsdbGetTSmaStatus(STsdb *pTsdb, STSma *param, void *result);
 int32_t tsdbRemoveTSmaData(STsdb *pTsdb, STSma *param, STimeWindow *pWin);
-
-
-
+int32_t tsdbFreeSmaState(SSmaStat *pSmaStat);
 
 // internal func
+
+
 static FORCE_INLINE int32_t tsdbEncodeTSmaKey(uint64_t tableUid, col_id_t colId, TSKEY tsKey, void **pData) {
   int32_t len = 0;
   len += taosEncodeFixedU64(pData, tableUid);
diff --git a/source/dnode/vnode/src/meta/metaBDBImpl.c b/source/dnode/vnode/src/meta/metaBDBImpl.c
index f49515412b..efdb3e0fe4 100644
--- a/source/dnode/vnode/src/meta/metaBDBImpl.c
+++ b/source/dnode/vnode/src/meta/metaBDBImpl.c
@@ -923,6 +923,7 @@ SArray *metaGetSmaTbUids(SMeta *pMeta, bool isDup) {
   SMetaDB *pDB = pMeta->pDB;
   DBC *    pCur = NULL;
   DBT      pkey = {0}, pval = {0};
+  uint32_t mode = isDup ? DB_NEXT_DUP : DB_NEXT_NODUP;
   int      ret;
 
   pUids = taosArrayInit(16, sizeof(tb_uid_t));
@@ -941,13 +942,8 @@ SArray *metaGetSmaTbUids(SMeta *pMeta, bool isDup) {
   void *pBuf = NULL;
 
   // TODO: lock?
-  while (true) {
-    ret = pCur->get(pCur, &pkey, &pval, isDup ? DB_NEXT_DUP : DB_NEXT_NODUP);
-    if(ret == 0) {
+  while ((ret = pCur->get(pCur, &pkey, &pval, mode)) == 0) {
       taosArrayPush(pUids, pkey.data);
-      continue;
-    }
-    break;
   }
 
   if (pCur) {
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 16809f1527..d15481b4aa 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -67,6 +67,26 @@ void tqClose(STQ* pTq) {
 }
 
 int tqPushMsg(STQ* pTq, void* msg, tmsg_t msgType, int64_t version) {
+  if (msgType != TDMT_VND_SUBMIT) return 0;
+  void* pIter = taosHashIterate(pTq->tqPushMgr->pHash, NULL);
+  while (pIter != NULL) {
+    STqPusher* pusher = *(STqPusher**)pIter;
+    if (pusher->type == TQ_PUSHER_TYPE__STREAM) {
+      STqStreamPusher* streamPusher = (STqStreamPusher*)pusher;
+      // repack
+      STqStreamToken* token = malloc(sizeof(STqStreamToken));
+      if (token == NULL) {
+        taosHashCancelIterate(pTq->tqPushMgr->pHash, pIter);
+        terrno = TSDB_CODE_OUT_OF_MEMORY;
+        return -1;
+      }
+      token->type = TQ_STREAM_TOKEN__DATA;
+      token->data = msg;
+      // set input
+      // exec
+    }
+    // send msg to ep
+  }
   // iterate hash
   // process all msg
   // if waiting
diff --git a/source/dnode/vnode/src/tq/tqPush.c b/source/dnode/vnode/src/tq/tqPush.c
index fea65846be..4186f29e2a 100644
--- a/source/dnode/vnode/src/tq/tqPush.c
+++ b/source/dnode/vnode/src/tq/tqPush.c
@@ -73,7 +73,7 @@ STqStreamPusher* tqAddStreamPusher(STqPushMgr* pushMgr, int64_t streamId, SEpSet
   streamPusher->type = TQ_PUSHER_TYPE__STREAM;
   streamPusher->nodeType = 0;
   streamPusher->streamId = streamId;
-  memcpy(&streamPusher->epSet, pEpSet, sizeof(SEpSet));
+  /*memcpy(&streamPusher->epSet, pEpSet, sizeof(SEpSet));*/
 
   if (taosHashPut(pushMgr->pHash, &streamId, sizeof(int64_t), &streamPusher, sizeof(void*)) < 0) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 2f24df0309..92a111298f 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -12,7 +12,6 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-#define _DEFAULT_SOURCE
 
 #include "vnode.h"
 
@@ -37,6 +36,7 @@ int32_t tqReadHandleSetMsg(STqReadHandle* pReadHandle, SSubmitReq* pMsg, int64_t
   pMsg->length = htonl(pMsg->length);
   pMsg->numOfBlocks = htonl(pMsg->numOfBlocks);
 
+  // iterate and convert
   if (tInitSubmitMsgIter(pMsg, &pReadHandle->msgIter) < 0) return -1;
   while (true) {
     if (tGetSubmitMsgNext(&pReadHandle->msgIter, &pReadHandle->pBlock) < 0) return -1;
diff --git a/source/dnode/vnode/src/tsdb/tsdbBDBImpl.c b/source/dnode/vnode/src/tsdb/tsdbBDBImpl.c
new file mode 100644
index 0000000000..f2f48bbc8a
--- /dev/null
+++ b/source/dnode/vnode/src/tsdb/tsdbBDBImpl.c
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
diff --git a/source/dnode/vnode/src/tsdb/tsdbFile.c b/source/dnode/vnode/src/tsdb/tsdbFile.c
index 74fb8c1c1f..00e97c7b61 100644
--- a/source/dnode/vnode/src/tsdb/tsdbFile.c
+++ b/source/dnode/vnode/src/tsdb/tsdbFile.c
@@ -365,7 +365,7 @@ int tsdbCreateDFile(STsdb *pRepo, SDFile *pDFile, bool updateHeader, TSDB_FILE_T
     if (errno == ENOENT) {
       // Try to create directory recursively
       char *s = strdup(TSDB_FILE_REL_NAME(pDFile));
-      if (tfsMkdirRecurAt(pRepo->pTfs, dirname(s), TSDB_FILE_DID(pDFile)) < 0) {
+      if (tfsMkdirRecurAt(pRepo->pTfs, taosDirName(s), TSDB_FILE_DID(pDFile)) < 0) {
         tfree(s);
         return -1;
       }
diff --git a/source/dnode/vnode/src/tsdb/tsdbMain.c b/source/dnode/vnode/src/tsdb/tsdbMain.c
index 2d8c470113..1b3e00f090 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMain.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMain.c
@@ -89,6 +89,7 @@ static STsdb *tsdbNew(const char *path, int32_t vgId, const STsdbCfg *pTsdbCfg,
 static void tsdbFree(STsdb *pTsdb) {
   if (pTsdb) {
     tsdbFreeFS(pTsdb->fs);
+    tsdbFreeSmaState(pTsdb->pSmaStat);
     tfree(pTsdb->path);
     free(pTsdb);
   }
diff --git a/source/dnode/vnode/src/tsdb/tsdbSma.c b/source/dnode/vnode/src/tsdb/tsdbSma.c
index b465dc3a88..c5f1261282 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSma.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSma.c
@@ -21,6 +21,10 @@
 
 #define SMA_STORE_SINGLE_BLOCKS  // store SMA data by single block or multiple blocks
 
+#define SMA_STATE_HASH_SLOT      4
+#define SMA_STATE_ITEM_HASH_SLOT 32
+
+#define SMA_TEST_INDEX_NAME "smaTestIndexName"  // TODO: just for test
 typedef enum {
   SMA_STORAGE_LEVEL_TSDB = 0,     // store TSma in dir  e.g. vnode${N}/tsdb/.tsma
   SMA_STORAGE_LEVEL_DFILESET = 1  // store TSma in file e.g. vnode${N}/tsdb/v2f1900.tsma.${sma_index_name}
@@ -48,6 +52,22 @@ typedef struct {
   // TODO
 } STSmaReadH;
 
+typedef struct {
+  /**
+   * @brief The field 'state' is here to demonstrate if one smaIndex is ready to provide service.
+   *    - TSDB_SMA_STAT_EXPIRED: 1) If sma calculation of history TS data is not finished; 2) Or if the TSDB is open,
+   * without information about its previous state.
+   *    - TSDB_SMA_STAT_OK: 1) The sma calculation of history data is finished; 2) Or recevied information from
+   * Streaming Module or TSDB local persistence.
+   */
+  int8_t    state;           // ETsdbSmaStat
+  SHashObj *expiredWindows;  // key: skey of time window, value: N/A
+} SSmaStatItem;
+
+struct SSmaStat {
+  SHashObj *smaStatItems;  // key: indexName, value: SSmaStatItem
+};
+
 // declaration of static functions
 static int32_t tsdbInitTSmaWriteH(STSmaWriteH *pSmaH, STsdb *pTsdb, STSma *param, STSmaData *pData);
 static int32_t tsdbInitTSmaReadH(STSmaReadH *pSmaH, STsdb *pTsdb, STSma *param, STSmaData *pData);
@@ -64,6 +84,125 @@ static int32_t tsdbInitTSmaReadH(STSmaReadH *pSmaH, STsdb *pTsdb, STSma *param,
 static int32_t tsdbInitTSmaFile(STSmaReadH *pReadH, STSma *param, STimeWindow *queryWin);
 static bool    tsdbSetAndOpenTSmaFile(STSmaReadH *pReadH, STSma *param, STimeWindow *queryWin);
 
+static int32_t tsdbInitSmaStat(SSmaStat **pSmaStat) {
+  ASSERT(pSmaStat != NULL);
+
+  if (*pSmaStat != NULL) {  // no lock
+    return TSDB_CODE_SUCCESS;
+  }
+
+  // TODO: lock. lazy mode when update expired window, or hungry mode during tsdbNew.
+  if (*pSmaStat == NULL) {
+    *pSmaStat = (SSmaStat *)calloc(1, sizeof(SSmaStat));
+    if (*pSmaStat == NULL) {
+      // TODO: unlock
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      return TSDB_CODE_FAILED;
+    }
+
+    (*pSmaStat)->smaStatItems =
+        taosHashInit(SMA_STATE_HASH_SLOT, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
+
+    if ((*pSmaStat)->smaStatItems == NULL) {
+      tfree(*pSmaStat);
+      // TODO: unlock
+      return TSDB_CODE_FAILED;
+    }
+  }
+  // TODO: unlock
+  return TSDB_CODE_SUCCESS;
+}
+
+static SSmaStatItem *tsdbNewSmaStatItem(int8_t state) {
+  SSmaStatItem *pItem = NULL;
+
+  pItem = (SSmaStatItem *)calloc(1, sizeof(SSmaStatItem));
+  if (pItem) {
+    pItem->state = state;
+    pItem->expiredWindows = taosHashInit(SMA_STATE_ITEM_HASH_SLOT, taosGetDefaultHashFunction(TSDB_DATA_TYPE_TIMESTAMP),
+                                         true, HASH_ENTRY_LOCK);
+    if (!pItem->expiredWindows) {
+      tfree(pItem);
+    }
+  }
+  return pItem;
+}
+
+int32_t tsdbFreeSmaState(SSmaStat *pSmaStat) {
+  if (pSmaStat) {
+    // TODO: use taosHashSetFreeFp when taosHashSetFreeFp is ready.
+    SSmaStatItem *item = taosHashIterate(pSmaStat->smaStatItems, NULL);
+    while (item != NULL) {
+      taosHashCleanup(item->expiredWindows);
+      item = taosHashIterate(pSmaStat->smaStatItems, item);
+    }
+
+    taosHashCleanup(pSmaStat->smaStatItems);
+    free(pSmaStat);
+  }
+}
+
+/**
+ * @brief Update expired window according to msg from stream computing module.
+ *
+ * @param pTsdb
+ * @param msg
+ * @return int32_t
+ */
+int32_t tsdbUpdateExpiredWindow(STsdb *pTsdb, char *msg) {
+  if (msg == NULL) {
+    return TSDB_CODE_FAILED;
+  }
+
+  tsdbInitSmaStat(&pTsdb->pSmaStat);  // lazy mode
+
+  // TODO: decode the msg => start
+  const char *  indexName = SMA_TEST_INDEX_NAME;
+  const int32_t SMA_TEST_EXPIRED_WINDOW_SIZE = 10;
+  TSKEY         expiredWindows[SMA_TEST_EXPIRED_WINDOW_SIZE];
+  int64_t       now = taosGetTimestampMs();
+  for (int32_t i = 0; i < SMA_TEST_EXPIRED_WINDOW_SIZE; ++i) {
+    expiredWindows[i] = now + i;
+  }
+
+  // TODO: decode the msg <= end
+  SHashObj *pItemsHash = pTsdb->pSmaStat->smaStatItems;
+
+  SSmaStatItem *pItem = (SSmaStatItem *)taosHashGet(pItemsHash, indexName, strlen(indexName));
+  if (!pItem) {
+    pItem = tsdbNewSmaStatItem(TSDB_SMA_STAT_EXPIRED);  // TODO use the real state
+    if (!pItem) {
+      // Response to stream computing: OOM
+      // For query, if the indexName not found, the TSDB should tell query module to query raw TS data.
+      return TSDB_CODE_FAILED;
+    }
+
+    if (taosHashPut(pItemsHash, indexName, strnlen(indexName, TSDB_INDEX_NAME_LEN), &pItem, sizeof(pItem)) != 0) {
+      // If error occurs during put smaStatItem, free the resources of pItem
+      taosHashCleanup(pItem->expiredWindows);
+      free(pItem);
+      return TSDB_CODE_FAILED;
+    }
+  }
+
+  int8_t state = TSDB_SMA_STAT_EXPIRED;
+  for (int32_t i = 0; i < SMA_TEST_EXPIRED_WINDOW_SIZE; ++i) {
+    if (taosHashPut(pItem->expiredWindows, &expiredWindows[i], sizeof(TSKEY), &state, sizeof(state)) != 0) {
+      // If error occurs during taosHashPut expired windows, remove the smaIndex from pTsdb->pSmaStat, thus TSDB would
+      // tell query module to query raw TS data.
+      // N.B.
+      //  1) It is assumed to be extemely little probability event of fail to taosHashPut.
+      //  2) This would solve the inconsistency to some extent, but not completely, unless we record all expired
+      // windows failed to put into hash table.
+      taosHashCleanup(pItem->expiredWindows);
+      taosHashRemove(pItemsHash, indexName, sizeof(indexName));
+      return TSDB_CODE_FAILED;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
 /**
  * @brief Judge the tSma storage level
  *
@@ -484,6 +623,22 @@ static bool tsdbSetAndOpenTSmaFile(STSmaReadH *pReadH, STSma *param, STimeWindow
  * @return int32_t
  */
 int32_t tsdbGetTSmaDataImpl(STsdb *pTsdb, STSma *param, STSmaData *pData, STimeWindow *queryWin, int32_t nMaxResult) {
+  const char *indexName = param->indexName;
+
+  SSmaStatItem *pItem = (SSmaStatItem *)taosHashGet(pTsdb->pSmaStat->smaStatItems, indexName, strlen(indexName));
+  if (pItem == NULL) {
+    // mark all window as expired and notify query module to query raw TS data.
+    return TSDB_CODE_SUCCESS;
+  }
+
+  int32_t nQueryWin = 0;
+  for (int32_t n = 0; n < nQueryWin; ++n) {
+    TSKEY thisWindow = n;
+    if (taosHashGet(pItem->expiredWindows, &thisWindow, sizeof(thisWindow)) != NULL) {
+      // TODO: mark this window as expired.
+    }
+  }
+
   STSmaReadH tReadH = {0};
   tsdbInitTSmaReadH(&tReadH, pTsdb, param, pData);
 
diff --git a/source/libs/index/src/index_tfile.c b/source/libs/index/src/index_tfile.c
index fd267fbf03..89f3f8ba8a 100644
--- a/source/libs/index/src/index_tfile.c
+++ b/source/libs/index/src/index_tfile.c
@@ -722,13 +722,13 @@ static SArray* tfileGetFileList(const char* path) {
   uint32_t version;
   SArray*  files = taosArrayInit(4, sizeof(void*));
 
-  DIR* dir = opendir(path);
-  if (NULL == dir) {
+  TdDirPtr pDir = taosOpenDir(path);
+  if (NULL == pDir) {
     return NULL;
   }
-  struct dirent* entry;
-  while ((entry = readdir(dir)) != NULL) {
-    char* file = entry->d_name;
+  TdDirEntryPtr pDirEntry;
+  while ((pDirEntry = taosReadDir(pDir)) != NULL) {
+    char* file = taosGetDirEntryName(pDirEntry);
     if (0 != tfileParseFileName(file, &suid, buf, &version)) {
       continue;
     }
@@ -738,7 +738,7 @@ static SArray* tfileGetFileList(const char* path) {
     sprintf(buf, "%s/%s", path, file);
     taosArrayPush(files, &buf);
   }
-  closedir(dir);
+  taosCloseDir(pDir);
 
   taosArraySort(files, tfileCompare);
   tfileRmExpireFile(files);
diff --git a/source/libs/tfs/inc/tfsInt.h b/source/libs/tfs/inc/tfsInt.h
index 913f34d6c2..f16d0445c6 100644
--- a/source/libs/tfs/inc/tfsInt.h
+++ b/source/libs/tfs/inc/tfsInt.h
@@ -59,7 +59,7 @@ typedef struct STfsDir {
   SDiskID   did;
   char      dirname[TSDB_FILENAME_LEN];
   STfsFile  tfile;
-  DIR      *dir;
+  TdDirPtr  pDir;
   STfs     *pTfs;
 } STfsDir;
 
diff --git a/source/libs/tfs/src/tfs.c b/source/libs/tfs/src/tfs.c
index 2579490791..c46989dc5d 100644
--- a/source/libs/tfs/src/tfs.c
+++ b/source/libs/tfs/src/tfs.c
@@ -192,14 +192,14 @@ void tfsBasename(const STfsFile *pFile, char *dest) {
   char tname[TSDB_FILENAME_LEN] = "\0";
 
   tstrncpy(tname, pFile->aname, TSDB_FILENAME_LEN);
-  tstrncpy(dest, basename(tname), TSDB_FILENAME_LEN);
+  tstrncpy(dest, taosDirEntryBaseName(tname), TSDB_FILENAME_LEN);
 }
 
 void tfsDirname(const STfsFile *pFile, char *dest) {
   char tname[TSDB_FILENAME_LEN] = "\0";
 
   tstrncpy(tname, pFile->aname, TSDB_FILENAME_LEN);
-  tstrncpy(dest, dirname(tname), TSDB_FILENAME_LEN);
+  tstrncpy(dest, taosDirName(tname), TSDB_FILENAME_LEN);
 }
 
 int32_t tfsRemoveFile(const STfsFile *pFile) { return taosRemoveFile(pFile->aname); }
@@ -233,7 +233,7 @@ int32_t tfsMkdirRecurAt(STfs *pTfs, const char *rname, SDiskID diskId) {
       // the pointer directly in this recursion.
       // See
       // https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/dirname.3.html
-      char *dir = strdup(dirname(s));
+      char *dir = strdup(taosDirName(s));
 
       if (tfsMkdirRecurAt(pTfs, dir, diskId) < 0) {
         free(s);
@@ -324,45 +324,46 @@ STfsDir *tfsOpendir(STfs *pTfs, const char *rname) {
   return pDir;
 }
 
-const STfsFile *tfsReaddir(STfsDir *pDir) {
-  if (pDir == NULL || pDir->dir == NULL) return NULL;
+const STfsFile *tfsReaddir(STfsDir *pTfsDir) {
+  if (pTfsDir == NULL || pTfsDir->pDir == NULL) return NULL;
   char bname[TMPNAME_LEN * 2] = "\0";
 
   while (true) {
-    struct dirent *dp = NULL;
-    dp = readdir(pDir->dir);
-    if (dp != NULL) {
+    TdDirEntryPtr pDirEntry = NULL;
+    pDirEntry = taosReadDir(pTfsDir->pDir);
+    if (pDirEntry != NULL) {
       // Skip . and ..
-      if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) continue;
+      char *name = taosGetDirEntryName(pDirEntry);
+      if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue;
 
-      if (pDir->dirname == NULL || pDir->dirname[0] == 0) {
-        snprintf(bname, TMPNAME_LEN * 2, "%s", dp->d_name);
+      if (pTfsDir->dirname == NULL || pTfsDir->dirname[0] == 0) {
+        snprintf(bname, TMPNAME_LEN * 2, "%s", name);
       } else {
-        snprintf(bname, TMPNAME_LEN * 2, "%s%s%s", pDir->dirname, TD_DIRSEP, dp->d_name);
+        snprintf(bname, TMPNAME_LEN * 2, "%s%s%s", pTfsDir->dirname, TD_DIRSEP, name);
       }
 
-      tfsInitFile(pDir->pTfs, &pDir->tfile, pDir->did, bname);
-      return &pDir->tfile;
+      tfsInitFile(pTfsDir->pTfs, &pTfsDir->tfile, pTfsDir->did, bname);
+      return &pTfsDir->tfile;
     }
 
-    if (tfsOpendirImpl(pDir->pTfs, pDir) < 0) {
+    if (tfsOpendirImpl(pTfsDir->pTfs, pTfsDir) < 0) {
       return NULL;
     }
 
-    if (pDir->dir == NULL) {
+    if (pTfsDir->pDir == NULL) {
       terrno = TSDB_CODE_SUCCESS;
       return NULL;
     }
   }
 }
 
-void tfsClosedir(STfsDir *pDir) {
-  if (pDir) {
-    if (pDir->dir != NULL) {
-      closedir(pDir->dir);
-      pDir->dir = NULL;
+void tfsClosedir(STfsDir *pTfsDir) {
+  if (pTfsDir) {
+    if (pTfsDir->pDir != NULL) {
+      taosCloseDir(pTfsDir->pDir);
+      pTfsDir->pDir = NULL;
     }
-    free(pDir);
+    free(pTfsDir);
   }
 }
 
@@ -487,29 +488,29 @@ static STfsDisk *tfsGetDiskByName(STfs *pTfs, const char *dir) {
   return pDisk;
 }
 
-static int32_t tfsOpendirImpl(STfs *pTfs, STfsDir *pDir) {
+static int32_t tfsOpendirImpl(STfs *pTfs, STfsDir *pTfsDir) {
   STfsDisk *pDisk = NULL;
   char      adir[TMPNAME_LEN * 2] = "\0";
 
-  if (pDir->dir != NULL) {
-    closedir(pDir->dir);
-    pDir->dir = NULL;
+  if (pTfsDir->pDir != NULL) {
+    taosCloseDir(pTfsDir->pDir);
+    pTfsDir->pDir = NULL;
   }
 
   while (true) {
-    pDisk = tfsNextDisk(pTfs, &pDir->iter);
+    pDisk = tfsNextDisk(pTfs, &pTfsDir->iter);
     if (pDisk == NULL) return 0;
 
-    pDir->did.level = pDisk->level;
-    pDir->did.id = pDisk->id;
+    pTfsDir->did.level = pDisk->level;
+    pTfsDir->did.id = pDisk->id;
 
     if (pDisk->path == NULL || pDisk->path[0] == 0) {
-      snprintf(adir, TMPNAME_LEN * 2, "%s", pDir->dirname);
+      snprintf(adir, TMPNAME_LEN * 2, "%s", pTfsDir->dirname);
     } else {
-      snprintf(adir, TMPNAME_LEN * 2, "%s%s%s", pDisk->path, TD_DIRSEP, pDir->dirname);
+      snprintf(adir, TMPNAME_LEN * 2, "%s%s%s", pDisk->path, TD_DIRSEP, pTfsDir->dirname);
     }
-    pDir->dir = opendir(adir);
-    if (pDir->dir != NULL) break;
+    pTfsDir->pDir = taosOpenDir(adir);
+    if (pTfsDir->pDir != NULL) break;
   }
 
   return 0;
diff --git a/source/libs/wal/src/walMeta.c b/source/libs/wal/src/walMeta.c
index 2a4f3497e4..248f758787 100644
--- a/source/libs/wal/src/walMeta.c
+++ b/source/libs/wal/src/walMeta.c
@@ -130,16 +130,16 @@ int walCheckAndRepairMeta(SWal* pWal) {
   regcomp(&logRegPattern, logPattern, REG_EXTENDED);
   regcomp(&idxRegPattern, idxPattern, REG_EXTENDED);
 
-  DIR* dir = opendir(pWal->path);
-  if (dir == NULL) {
+  TdDirPtr pDir = taosOpenDir(pWal->path);
+  if (pDir == NULL) {
     wError("vgId:%d, path:%s, failed to open since %s", pWal->cfg.vgId, pWal->path, strerror(errno));
     return -1;
   }
 
   // scan log files and build new meta
-  struct dirent* ent;
-  while ((ent = readdir(dir)) != NULL) {
-    char* name = basename(ent->d_name);
+  TdDirEntryPtr pDirEntry;
+  while ((pDirEntry = taosReadDir(pDir)) != NULL) {
+    char* name = taosDirEntryBaseName(taosGetDirEntryName(pDirEntry));
     int   code = regexec(&logRegPattern, name, 0, NULL, 0);
     if (code == 0) {
       SWalFileInfo fileInfo;
@@ -149,7 +149,7 @@ int walCheckAndRepairMeta(SWal* pWal) {
     }
   }
 
-  closedir(dir);
+  taosCloseDir(pDir);
   regfree(&logRegPattern);
   regfree(&idxRegPattern);
 
@@ -337,25 +337,25 @@ static int walFindCurMetaVer(SWal* pWal) {
   regex_t     walMetaRegexPattern;
   regcomp(&walMetaRegexPattern, pattern, REG_EXTENDED);
 
-  DIR* dir = opendir(pWal->path);
-  if (dir == NULL) {
+  TdDirPtr pDir = taosOpenDir(pWal->path);
+  if (pDir == NULL) {
     wError("vgId:%d, path:%s, failed to open since %s", pWal->cfg.vgId, pWal->path, strerror(errno));
     return -1;
   }
 
-  struct dirent* ent;
+  TdDirEntryPtr pDirEntry;
 
   // find existing meta-ver[x].json
   int metaVer = -1;
-  while ((ent = readdir(dir)) != NULL) {
-    char* name = basename(ent->d_name);
+  while ((pDirEntry = taosReadDir(pDir)) != NULL) {
+    char* name = taosDirEntryBaseName(taosGetDirEntryName(pDirEntry));
     int   code = regexec(&walMetaRegexPattern, name, 0, NULL, 0);
     if (code == 0) {
       sscanf(name, "meta-ver%d", &metaVer);
       break;
     }
   }
-  closedir(dir);
+  taosCloseDir(pDir);
   regfree(&walMetaRegexPattern);
   return metaVer;
 }
diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index 699da75790..0f6ac0b214 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -34,9 +34,6 @@ int32_t walCommit(SWal *pWal, int64_t ver) {
 int32_t walRollback(SWal *pWal, int64_t ver) {
   int  code;
   char fnameStr[WAL_FILE_LEN];
-  if (ver == pWal->vers.lastVer) {
-    return 0;
-  }
   if (ver > pWal->vers.lastVer || ver < pWal->vers.commitVer) {
     terrno = TSDB_CODE_WAL_INVALID_VER;
     return -1;
diff --git a/source/libs/wal/test/walMetaTest.cpp b/source/libs/wal/test/walMetaTest.cpp
index 230555e016..5bfea9ab5e 100644
--- a/source/libs/wal/test/walMetaTest.cpp
+++ b/source/libs/wal/test/walMetaTest.cpp
@@ -124,13 +124,8 @@ class WalRetentionEnv : public ::testing::Test {
 
   void SetUp() override {
     SWalCfg cfg;
-    cfg.rollPeriod = -1,
-    cfg.segSize = -1,
-    cfg.retentionPeriod = -1,
-    cfg.retentionSize = 0,
-    cfg.rollPeriod = 0,
-    cfg.vgId = 0,
-    cfg.level = TAOS_WAL_FSYNC;
+    cfg.rollPeriod = -1, cfg.segSize = -1, cfg.retentionPeriod = -1, cfg.retentionSize = 0, cfg.rollPeriod = 0,
+    cfg.vgId = 0, cfg.level = TAOS_WAL_FSYNC;
     pWal = walOpen(pathName, &cfg);
     ASSERT(pWal != NULL);
   }
@@ -241,6 +236,12 @@ TEST_F(WalCleanEnv, rollback) {
     ASSERT_EQ(code, 0);
     ASSERT_EQ(pWal->vers.lastVer, i);
   }
+  code = walRollback(pWal, 12);
+  ASSERT_NE(code, 0);
+  ASSERT_EQ(pWal->vers.lastVer, 9);
+  code = walRollback(pWal, 9);
+  ASSERT_EQ(code, 0);
+  ASSERT_EQ(pWal->vers.lastVer, 8);
   code = walRollback(pWal, 5);
   ASSERT_EQ(code, 0);
   ASSERT_EQ(pWal->vers.lastVer, 4);
@@ -324,7 +325,7 @@ TEST_F(WalKeepEnv, readHandleRead) {
 TEST_F(WalRetentionEnv, repairMeta1) {
   walResetEnv();
   int code;
-  
+
   int i;
   for (i = 0; i < 100; i++) {
     char newStr[100];
@@ -336,14 +337,14 @@ TEST_F(WalRetentionEnv, repairMeta1) {
 
   TearDown();
 
-  //getchar();
+  // getchar();
   char buf[100];
   sprintf(buf, "%s/meta-ver%d", pathName, 0);
   taosRemoveFile(buf);
   sprintf(buf, "%s/meta-ver%d", pathName, 1);
   taosRemoveFile(buf);
   SetUp();
-  //getchar();
+  // getchar();
 
   ASSERT_EQ(pWal->vers.lastVer, 99);
 
@@ -401,5 +402,4 @@ TEST_F(WalRetentionEnv, repairMeta1) {
       EXPECT_EQ(newStr[j], pRead->pHead->head.body[j]);
     }
   }
-
 }
diff --git a/source/os/src/osDir.c b/source/os/src/osDir.c
index 7d7382d83f..b4058b3c0e 100644
--- a/source/os/src/osDir.c
+++ b/source/os/src/osDir.c
@@ -14,6 +14,7 @@
  */
 
 #define _DEFAULT_SOURCE
+#define ALLOW_FORBID_FUNC
 
 #include "os.h"
 #include "osString.h"
@@ -36,6 +37,10 @@
 #include <unistd.h>
 #include <wordexp.h>
 
+typedef struct dirent dirent;
+typedef struct DIR TdDir;
+typedef struct dirent TdDirent;
+
 void taosRemoveDir(const char *dirname) {
   DIR *dir = opendir(dirname);
   if (dir == NULL) return;
@@ -149,4 +154,47 @@ bool taosIsDir(const char *dirname) {
   return false;
 }
 
+char* taosDirName(char *name) {
+  return dirname(name);
+}
+
+char* taosDirEntryBaseName(char *name) {
+  return basename(name);
+}
+
+TdDirPtr taosOpenDir(const char *dirname) {
+  if (dirname == NULL) {
+    return NULL;
+  }
+  return (TdDirPtr)opendir(dirname);
+}
+
+TdDirEntryPtr taosReadDir(TdDirPtr pDir) {
+  if (pDir == NULL) {
+    return NULL;
+  }
+  return (TdDirEntryPtr)readdir((DIR*)pDir);
+}
+
+bool taosDirEntryIsDir(TdDirEntryPtr pDirEntry) {
+  if (pDirEntry == NULL) {
+    return false;
+  }
+  return (((dirent*)pDirEntry)->d_type & DT_DIR) != 0;
+}
+
+char* taosGetDirEntryName(TdDirEntryPtr pDirEntry) {
+  if (pDirEntry == NULL) {
+    return NULL;
+  }
+  return ((dirent*)pDirEntry)->d_name;
+}
+
+int32_t taosCloseDir(TdDirPtr pDir) {
+  if (pDir == NULL) {
+    return -1;
+  }
+  return closedir((DIR*)pDir);
+}
+
 #endif
diff --git a/source/os/src/osSemaphore.c b/source/os/src/osSemaphore.c
index 0d7066b5c8..e5b506e8d8 100644
--- a/source/os/src/osSemaphore.c
+++ b/source/os/src/osSemaphore.c
@@ -99,7 +99,7 @@ static void *sem_thread_routine(void *arg) {
   sem_port = mach_task_self();
   kern_return_t ret = semaphore_create(sem_port, &sem_exit, SYNC_POLICY_FIFO, 0);
   if (ret != KERN_SUCCESS) {
-    fprintf(stderr, "==%s[%d]%s()==failed to create sem_exit\n", basename(__FILE__), __LINE__, __func__);
+    fprintf(stderr, "==%s[%d]%s()==failed to create sem_exit\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__);
     sem_inited = -1;
     return NULL;
   }
@@ -112,7 +112,7 @@ static void once_init(void) {
   int r = 0;
   r = pthread_create(&sem_thread, NULL, sem_thread_routine, NULL);
   if (r) {
-    fprintf(stderr, "==%s[%d]%s()==failed to create thread\n", basename(__FILE__), __LINE__, __func__);
+    fprintf(stderr, "==%s[%d]%s()==failed to create thread\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__);
     return;
   }
   while (sem_inited == 0) {
@@ -139,14 +139,14 @@ struct tsem_s {
 };
 
 int tsem_init(tsem_t *sem, int pshared, unsigned int value) {
-  // fprintf(stderr, "==%s[%d]%s():[%p]==creating\n", basename(__FILE__), __LINE__, __func__, sem);
+  // fprintf(stderr, "==%s[%d]%s():[%p]==creating\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
   if (*sem) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==already initialized\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==already initialized\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   struct tsem_s *p = (struct tsem_s *)calloc(1, sizeof(*p));
   if (!p) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==out of memory\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==out of memory\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
 
@@ -162,7 +162,7 @@ int tsem_init(tsem_t *sem, int pshared, unsigned int value) {
     p->val = value;
   } while (0);
   if (r) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==not created\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==not created\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
 #elif defined(SEM_USE_POSIX)
@@ -181,27 +181,27 @@ int tsem_init(tsem_t *sem, int pshared, unsigned int value) {
     int e = errno;
     if (e == EEXIST) continue;
     if (e == EINTR) continue;
-    fprintf(stderr, "==%s[%d]%s():[%p]==not created[%d]%s\n", basename(__FILE__), __LINE__, __func__, sem, e,
+    fprintf(stderr, "==%s[%d]%s():[%p]==not created[%d]%s\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem, e,
             strerror(e));
     abort();
   } while (p->sem == SEM_FAILED);
 #elif defined(SEM_USE_SEM)
   pthread_once(&sem_once, once_init);
   if (sem_inited != 1) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal resource init failed\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal resource init failed\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     errno = ENOMEM;
     return -1;
   }
   kern_return_t ret = semaphore_create(sem_port, &p->sem, SYNC_POLICY_FIFO, value);
   if (ret != KERN_SUCCESS) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==semophore_create failed\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==semophore_create failed\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     // we fail-fast here, because we have less-doc about semaphore_create for the moment
     abort();
   }
 #else   // SEM_USE_PTHREAD
   p->sem = dispatch_semaphore_create(value);
   if (p->sem == NULL) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==not created\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==not created\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
 #endif  // SEM_USE_PTHREAD
@@ -215,28 +215,28 @@ int tsem_init(tsem_t *sem, int pshared, unsigned int value) {
 
 int tsem_wait(tsem_t *sem) {
   if (!*sem) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   struct tsem_s *p = *sem;
   if (!p->valid) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==already destroyed\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==already destroyed\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
 #ifdef SEM_USE_PTHREAD
   if (pthread_mutex_lock(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   p->val -= 1;
   if (p->val < 0) {
     if (pthread_cond_wait(&p->cond, &p->lock)) {
-      fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+      fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
       abort();
     }
   }
   if (pthread_mutex_unlock(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   return 0;
@@ -251,28 +251,28 @@ int tsem_wait(tsem_t *sem) {
 
 int tsem_post(tsem_t *sem) {
   if (!*sem) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   struct tsem_s *p = *sem;
   if (!p->valid) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==already destroyed\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==already destroyed\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
 #ifdef SEM_USE_PTHREAD
   if (pthread_mutex_lock(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   p->val += 1;
   if (p->val <= 0) {
     if (pthread_cond_signal(&p->cond)) {
-      fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+      fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
       abort();
     }
   }
   if (pthread_mutex_unlock(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   return 0;
@@ -286,34 +286,34 @@ int tsem_post(tsem_t *sem) {
 }
 
 int tsem_destroy(tsem_t *sem) {
-  // fprintf(stderr, "==%s[%d]%s():[%p]==destroying\n", basename(__FILE__), __LINE__, __func__, sem);
+  // fprintf(stderr, "==%s[%d]%s():[%p]==destroying\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
   if (!*sem) {
-    // fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", basename(__FILE__), __LINE__, __func__, sem);
+    // fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     // abort();
     return 0;
   }
   struct tsem_s *p = *sem;
   if (!p->valid) {
-    // fprintf(stderr, "==%s[%d]%s():[%p]==already destroyed\n", basename(__FILE__), __LINE__, __func__, sem);
+    // fprintf(stderr, "==%s[%d]%s():[%p]==already destroyed\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     // abort();
     return 0;
   }
 #ifdef SEM_USE_PTHREAD
   if (pthread_mutex_lock(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   p->valid = 0;
   if (pthread_cond_destroy(&p->cond)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   if (pthread_mutex_unlock(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
   if (pthread_mutex_destroy(&p->lock)) {
-    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", basename(__FILE__), __LINE__, __func__, sem);
+    fprintf(stderr, "==%s[%d]%s():[%p]==internal logic error\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem);
     abort();
   }
 #elif defined(SEM_USE_POSIX)
@@ -322,7 +322,7 @@ int tsem_destroy(tsem_t *sem) {
   int r = sem_unlink(name);
   if (r) {
     int e = errno;
-    fprintf(stderr, "==%s[%d]%s():[%p]==unlink failed[%d]%s\n", basename(__FILE__), __LINE__, __func__, sem, e,
+    fprintf(stderr, "==%s[%d]%s():[%p]==unlink failed[%d]%s\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__, sem, e,
             strerror(e));
     abort();
   }
diff --git a/source/os/src/osSocket.c b/source/os/src/osSocket.c
index 9330cb7b32..698ceded16 100644
--- a/source/os/src/osSocket.c
+++ b/source/os/src/osSocket.c
@@ -809,7 +809,8 @@ int32_t taosGetFqdn(char *fqdn) {
   char hostname[1024];
   hostname[1023] = '\0';
   if (gethostname(hostname, 1023) == -1) {
-    // printf("failed to get hostname, reason:%s", strerror(errno));
+    printf("failed to get hostname, reason:%s", strerror(errno));
+    assert(0);
     return -1;
   }
 
@@ -826,7 +827,8 @@ int32_t taosGetFqdn(char *fqdn) {
 #endif  // __APPLE__
   int32_t ret = getaddrinfo(hostname, NULL, &hints, &result);
   if (!result) {
-    // printf("failed to get fqdn, code:%d, reason:%s", ret, gai_strerror(ret));
+    printf("failed to get fqdn, code:%d, reason:%s", ret, gai_strerror(ret));
+    assert(0);
     return -1;
   }
 
diff --git a/source/os/src/osTimer.c b/source/os/src/osTimer.c
index bb526e0ba0..6b60923189 100644
--- a/source/os/src/osTimer.c
+++ b/source/os/src/osTimer.c
@@ -79,7 +79,7 @@ static void* timer_routine(void* arg) {
     struct kevent64_s kev[10] = {0};
     r = kevent64(timer_kq, NULL, 0, kev, sizeof(kev) / sizeof(kev[0]), 0, &to);
     if (r != 0) {
-      fprintf(stderr, "==%s[%d]%s()==kevent64 failed\n", basename(__FILE__), __LINE__, __func__);
+      fprintf(stderr, "==%s[%d]%s()==kevent64 failed\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__);
       abort();
     }
     timer_callback(SIGALRM);  // just mock
@@ -97,14 +97,14 @@ int taosInitTimer(void (*callback)(int), int ms) {
 
   timer_kq = kqueue();
   if (timer_kq == -1) {
-    fprintf(stderr, "==%s[%d]%s()==failed to create timer kq\n", basename(__FILE__), __LINE__, __func__);
+    fprintf(stderr, "==%s[%d]%s()==failed to create timer kq\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__);
     // since no caller of this func checks the return value for the moment
     abort();
   }
 
   r = pthread_create(&timer_thread, NULL, timer_routine, NULL);
   if (r) {
-    fprintf(stderr, "==%s[%d]%s()==failed to create timer thread\n", basename(__FILE__), __LINE__, __func__);
+    fprintf(stderr, "==%s[%d]%s()==failed to create timer thread\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__);
     // since no caller of this func checks the return value for the moment
     abort();
   }
@@ -116,7 +116,7 @@ void taosUninitTimer() {
   timer_stop = 1;
   r = pthread_join(timer_thread, NULL);
   if (r) {
-    fprintf(stderr, "==%s[%d]%s()==failed to join timer thread\n", basename(__FILE__), __LINE__, __func__);
+    fprintf(stderr, "==%s[%d]%s()==failed to join timer thread\n", taosDirEntryBaseName(__FILE__), __LINE__, __func__);
     // since no caller of this func checks the return value for the moment
     abort();
   }
diff --git a/tests/test/c/tmqDemo.c b/tests/test/c/tmqDemo.c
index 3eb8e60d56..cb7d7c67ce 100644
--- a/tests/test/c/tmqDemo.c
+++ b/tests/test/c/tmqDemo.c
@@ -192,11 +192,11 @@ static void msg_process(tmq_message_t* message) { tmqShowMsg(message); }
 // calc dir size (not include itself 4096Byte)
 int64_t getDirectorySize(char *dir)
 {
-    DIR *dp;
-    struct dirent *entry;
+    TdDirPtr pDir;
+    TdDirEntryPtr pDirEntry;
     int64_t totalSize=0;
 
-    if ((dp = opendir(dir)) == NULL) {
+    if ((pDir = taosOpenDir(dir)) == NULL) {
         fprintf(stderr, "Cannot open dir: %s\n", dir);
         return -1; 
     }
@@ -204,26 +204,27 @@ int64_t getDirectorySize(char *dir)
     //lstat(dir, &statbuf);
     //totalSize+=statbuf.st_size;
 
-    while ((entry = readdir(dp)) != NULL) {
+    while ((pDirEntry = taosReadDir(pDir)) != NULL) {
         char subdir[1024];
-        sprintf(subdir, "%s/%s", dir, entry->d_name);
+        char* fileName = taosGetDirEntryName(pDirEntry);
+        sprintf(subdir, "%s/%s", dir, fileName);
 
         //printf("===d_name: %s\n", entry->d_name);
         if (taosIsDir(subdir)) {
-            if (strcmp(".", entry->d_name) == 0 || strcmp("..", entry->d_name) == 0) {
+            if (strcmp(".", fileName) == 0 || strcmp("..", fileName) == 0) {
                 continue;
             }
 
             int64_t subDirSize = getDirectorySize(subdir);
             totalSize+=subDirSize;
-        } else if (0 == strcmp(strchr(entry->d_name, '.'), ".log")) { // only calc .log file size, and not include .idx file	
+        } else if (0 == strcmp(strchr(fileName, '.'), ".log")) { // only calc .log file size, and not include .idx file	
             int64_t file_size = 0;
             taosStatFile(subdir, &file_size, NULL);
             totalSize+=file_size;
         }
     }
 
-    closedir(dp);
+    taosCloseDir(pDir);
     return totalSize;
 }