diff --git a/src/mnode/src/mnodeCluster.c b/src/mnode/src/mnodeCluster.c
index 94ec59b1b085208349d17dfa6ed203b36ebbf61b..169d2ebd9dae1bcc34ea24dd3770951f9cbb442b 100644
--- a/src/mnode/src/mnodeCluster.c
+++ b/src/mnode/src/mnodeCluster.c
@@ -138,14 +138,6 @@ void mnodeDecClusterRef(SClusterObj *pCluster) {
   sdbDecRef(tsClusterSdb, pCluster);
 }
 
-#ifdef __APPLE__
-bool taosGetSystemUid(char *uid) {
-  fprintf(stderr, "%s[%d]%s(): not implemented yet!\n", basename(__FILE__), __LINE__, __func__);
-  abort();
-  return false;
-}
-#endif // __APPLE__
-
 static int32_t mnodeCreateCluster() {
   int64_t numOfClusters = sdbGetNumOfRows(tsClusterSdb);
   if (numOfClusters != 0) return TSDB_CODE_SUCCESS;
diff --git a/src/os/src/darwin/darwinSysInfo.c b/src/os/src/darwin/darwinSysInfo.c
index ad3facdcee50775aeea0794b60c0d9f82d1de538..cf799d7f55a0b6c084bb563e4cb00ec256bbc8e3 100644
--- a/src/os/src/darwin/darwinSysInfo.c
+++ b/src/os/src/darwin/darwinSysInfo.c
@@ -103,4 +103,15 @@ int taosSystem(const char *cmd) {
 
 void taosSetCoreDump() {}
 
-char *taosGetCmdlineByPID(int pid) { return ""; }
\ No newline at end of file
+char *taosGetCmdlineByPID(int pid) {
+  return "[not supported yet]";
+}
+
+bool taosGetSystemUid(char *uid) {
+  uuid_t uuid = {0};
+  uuid_generate(uuid);
+  // it's caller's responsibility to make enough space for `uid`, that's 36-char + 1-null
+  uuid_unparse(uuid, uid);
+  return true;
+}
+
diff --git a/src/tsdb/inc/tsdbMain.h b/src/tsdb/inc/tsdbMain.h
index f3e69d92103b691b934bf0dee8ccbde324da89fa..05335b45d5850033918c1af503f3d505af2813c0 100644
--- a/src/tsdb/inc/tsdbMain.h
+++ b/src/tsdb/inc/tsdbMain.h
@@ -233,11 +233,7 @@ typedef struct {
   SMemTable*      mem;
   SMemTable*      imem;
   STsdbFileH*     tsdbFileH;
-#ifdef __APPLE__
-  sem_t          *readyToCommit;
-#else // __APPLE__
-  sem_t           readyToCommit;
-#endif // __APPLE__
+  tsem_t          readyToCommit;
   pthread_mutex_t mutex;
   bool            repoLocked;
   int32_t         code; // Commit code
diff --git a/src/tsdb/src/tsdbCommit.c b/src/tsdb/src/tsdbCommit.c
index b3f7f51327915831830a3e3e14940eab7c9b6478..cd8358e5e39c0b876841423d7881c3ee5ca7913b 100644
--- a/src/tsdb/src/tsdbCommit.c
+++ b/src/tsdb/src/tsdbCommit.c
@@ -166,11 +166,7 @@ static void tsdbEndCommit(STsdbRepo *pRepo, int eno) {
   pRepo->imem = NULL;
   tsdbUnlockRepo(pRepo);
   tsdbUnRefMemTable(pRepo, pIMem);
-#ifdef __APPLE__
-  sem_post(pRepo->readyToCommit);
-#else // __APPLE__
-  sem_post(&(pRepo->readyToCommit));
-#endif // __APPLE__
+  tsem_post(&(pRepo->readyToCommit));
 }
 
 static int tsdbHasDataToCommit(SCommitIter *iters, int nIters, TSKEY minKey, TSKEY maxKey) {
diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index adab932bb607e7b8eaa79c816dcab6e89e9d9392..cadbfa91cf51abac00bcb0d77605ac96346ec46c 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -146,11 +146,7 @@ int tsdbCloseRepo(TSDB_REPO_T *repo, int toCommit) {
 
   if (toCommit) {
     tsdbAsyncCommit(pRepo);
-#ifdef __APPLE__
-    sem_wait(pRepo->readyToCommit);
-#else // __APPLE__
-    sem_wait(&(pRepo->readyToCommit));
-#endif // __APPLE__
+    tsem_wait(&(pRepo->readyToCommit));
     terrno = pRepo->code;
   }
   tsdbUnRefMemTable(pRepo, pRepo->mem);
@@ -647,21 +643,12 @@ static STsdbRepo *tsdbNewRepo(char *rootDir, STsdbAppH *pAppH, STsdbCfg *pCfg) {
     goto _err;
   }
 
-#ifdef __APPLE__
-  pRepo->readyToCommit = sem_open(NULL, O_CREAT, 0644, 1);
-  if (pRepo->readyToCommit==SEM_FAILED) {
-    code = errno;
-    terrno = TAOS_SYSTEM_ERROR(code);
-    goto _err;
-  }
-#else // __APPLE__
-  code = sem_init(&(pRepo->readyToCommit), 0, 1);
+  code = tsem_init(&(pRepo->readyToCommit), 0, 1);
   if (code != 0) {
     code = errno;
     terrno = TAOS_SYSTEM_ERROR(code);
     goto _err;
   }
-#endif // __APPLE__
 
   pRepo->repoLocked = false;
 
@@ -707,11 +694,7 @@ static void tsdbFreeRepo(STsdbRepo *pRepo) {
     // tsdbFreeMemTable(pRepo->mem);
     // tsdbFreeMemTable(pRepo->imem);
     tfree(pRepo->rootDir);
-#ifdef __APPLE__
-    sem_close(pRepo->readyToCommit);
-#else // __APPLE__
-    sem_destroy(&(pRepo->readyToCommit));
-#endif // __APPLE__
+    tsem_destroy(&(pRepo->readyToCommit));
     pthread_mutex_destroy(&pRepo->mutex);
     free(pRepo);
   }
diff --git a/src/tsdb/src/tsdbMemTable.c b/src/tsdb/src/tsdbMemTable.c
index 206a3332d57e4db3f4ce6fae4421298fd0736865..42bbebe5f7ae319e45cfd37bea6c1dd673be7904 100644
--- a/src/tsdb/src/tsdbMemTable.c
+++ b/src/tsdb/src/tsdbMemTable.c
@@ -207,11 +207,7 @@ void *tsdbAllocBytes(STsdbRepo *pRepo, int bytes) {
 int tsdbAsyncCommit(STsdbRepo *pRepo) {
   if (pRepo->mem == NULL) return 0;
 
-#ifdef __APPLE__
-  sem_wait(pRepo->readyToCommit);
-#else // __APPLE__
-  sem_wait(&(pRepo->readyToCommit));
-#endif // __APPLE__
+  tsem_wait(&(pRepo->readyToCommit));
 
   ASSERT(pRepo->imem == NULL);
 
@@ -233,13 +229,8 @@ int tsdbSyncCommit(TSDB_REPO_T *repo) {
   STsdbRepo *pRepo = (STsdbRepo *)repo;
 
   tsdbAsyncCommit(pRepo);
-#ifdef __APPLE__
-  sem_wait(pRepo->readyToCommit);
-  sem_post(pRepo->readyToCommit);
-#else // __APPLE__
-  sem_wait(&(pRepo->readyToCommit));
-  sem_post(&(pRepo->readyToCommit));
-#endif // __APPLE__
+  tsem_wait(&(pRepo->readyToCommit));
+  tsem_post(&(pRepo->readyToCommit));
 
   if (pRepo->code != TSDB_CODE_SUCCESS) {
     terrno = pRepo->code;