diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 2418375ee162b29ea8ab7cf237cbc843c725dbd2..96e8fb26c65bc0c13a03d3d9b9c064d57c0fb45e 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -254,7 +254,7 @@ bool taosCfgDynamicOptions(char *msg) {
     //if (!(cfg->cfgType & TSDB_CFG_CTYPE_B_LOG)) continue;
     if (cfg->valType != TAOS_CFG_VTYPE_INT32) continue;
     
-    int32_t cfgLen = strlen(cfg->option);
+    int32_t cfgLen = (int32_t)strlen(cfg->option);
     if (cfgLen != olen) continue;
     if (strncasecmp(option, cfg->option, olen) != 0) continue;
     *((int32_t *)cfg->ptr) = vint;
diff --git a/src/os/inc/osWindows.h b/src/os/inc/osWindows.h
index 224e41593dac4bb4111d656d6e84f7c1f59fd93f..ee17d2ddc39c6a13c5d6f2bae5315c47b8e8b022 100644
--- a/src/os/inc/osWindows.h
+++ b/src/os/inc/osWindows.h
@@ -58,8 +58,6 @@ extern "C" {
   int32_t BUILDIN_CTZL(uint64_t val);
   int32_t BUILDIN_CTZ(uint32_t val);
 
-#define TAOS_OS_FUNC_DIR
-
 #define TAOS_OS_FUNC_FILE
 #define TAOS_OS_FUNC_FILE_ISREG
 #define TAOS_OS_FUNC_FILE_ISDIR
diff --git a/src/os/src/detail/osDir.c b/src/os/src/detail/osDir.c
index ba0507f387b58214bb78c5816bfa24bf5e6a2539..93651c78ef98cfbcb8bbdbb575b3fb952acab229 100644
--- a/src/os/src/detail/osDir.c
+++ b/src/os/src/detail/osDir.c
@@ -18,8 +18,6 @@
 #include "tglobal.h"
 #include "tulog.h"
 
-#ifndef TAOS_OS_FUNC_DIR
-
 void taosRemoveDir(char *rootDir) {
   DIR *dir = opendir(rootDir);
   if (dir == NULL) return;
@@ -79,7 +77,7 @@ void taosRemoveOldLogFiles(char *rootDir, int32_t keepDays) {
       // if (stat(fname, &fState) < 0) {
       //   continue;
       // }
-      int32_t len = strlen(filename);
+      int32_t len = (int32_t)strlen(filename);
       int64_t fileSec = 0;
       for (int i = len - 1; i >= 0; i--) {
         if (filename[i] == '.') {
@@ -89,7 +87,7 @@ void taosRemoveOldLogFiles(char *rootDir, int32_t keepDays) {
       }
 
       if (fileSec <= 100) continue;
-      int32_t days = ABS(sec - fileSec) / 86400 + 1;
+      int32_t days = (int32_t)(ABS(sec - fileSec) / 86400 + 1);
       if (days > keepDays) {
         (void)remove(filename);
         uInfo("file:%s is removed, days:%d keepDays:%d", filename, days, keepDays);
@@ -102,5 +100,3 @@ void taosRemoveOldLogFiles(char *rootDir, int32_t keepDays) {
   closedir(dir);
   rmdir(rootDir);
 }
-
-#endif
diff --git a/src/os/src/windows/wDir.c b/src/os/src/windows/wDir.c
deleted file mode 100644
index c486cd0d4076cd3800882299ea5ac8607f964bbb..0000000000000000000000000000000000000000
--- a/src/os/src/windows/wDir.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * 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/>.
- */
-
-#define _DEFAULT_SOURCE
-#include "os.h"
-#include "tulog.h"
-
-void taosRemoveDir(char *rootDir) {
-  uError("%s not implemented yet", __FUNCTION__);
-}
-
-int taosMkDir(const char *path, mode_t mode) {
-  uError("%s not implemented yet", __FUNCTION__);
-  return 0;
-}
-
-void taosMvDir(char* destDir, char *srcDir) {
-  uError("%s not implemented yet", __FUNCTION__);
-}
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index 4110c566d2913321036416d96d07c36cbde15f43..c7cd919ee8d2155d8440f47d3afe3f96dcc8c4bc 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -576,5 +576,5 @@ static TSKEY tsdbGetCurrMinKey(int8_t precision, int32_t keep) {
 }
 
 static int tsdbGetCurrMinFid(int8_t precision, int32_t keep, int32_t days) {
-  return TSDB_KEY_FILEID(tsdbGetCurrMinKey(precision, keep), days, precision);
+  return (int)(TSDB_KEY_FILEID(tsdbGetCurrMinKey(precision, keep), days, precision));
 }
\ No newline at end of file