diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index 56d1cb9d106ddeffe54f770e52a4f30cbeafe14b..7759ebec16a4a3c30461ee0e55959f783aa35073 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -573,6 +573,63 @@ static SSDataBlock* createResBlock(SQueryTableDataCond* pCond, int32_t capacity)
   return pResBlock;
 }
 
+static int32_t tsdbInitReaderLock(STsdbReader* pReader) {
+  int32_t code = -1;
+  qTrace("tsdb/read: %p, pre-init read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  code = taosThreadMutexInit(&pReader->readerMutex, NULL);
+
+  qTrace("tsdb/read: %p, post-init read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  return code;
+}
+
+static int32_t tsdbUninitReaderLock(STsdbReader* pReader) {
+  int32_t code = -1;
+  qTrace("tsdb/read: %p, pre-uninit read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  code = taosThreadMutexDestroy(&pReader->readerMutex);
+
+  qTrace("tsdb/read: %p, post-uninit read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  return code;
+}
+
+static int32_t tsdbAcquireReader(STsdbReader* pReader) {
+  int32_t code = -1;
+  qTrace("tsdb/read: %p, pre-take read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  code = taosThreadMutexLock(&pReader->readerMutex);
+
+  qTrace("tsdb/read: %p, post-take read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  return code;
+}
+
+static int32_t tsdbTryAcquireReader(STsdbReader* pReader) {
+  int32_t code = -1;
+  qTrace("tsdb/read: %p, pre-trytake read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  code = taosThreadMutexTryLock(&pReader->readerMutex);
+
+  qTrace("tsdb/read: %p, post-trytake read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  return code;
+}
+
+static int32_t tsdbReleaseReader(STsdbReader* pReader) {
+  int32_t code = -1;
+  qTrace("tsdb/read: %p, pre-untake read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  code = taosThreadMutexUnlock(&pReader->readerMutex);
+
+  qTrace("tsdb/read: %p, post-untake read mutex: %p, code: %d", pReader, &pReader->readerMutex, code);
+
+  return code;
+}
+
+void tsdbReleaseDataBlock(STsdbReader* pReader) { tsdbReleaseReader(pReader); }
+
 static int32_t tsdbReaderCreate(SVnode* pVnode, SQueryTableDataCond* pCond, STsdbReader** ppReader, int32_t capacity,
                                 SSDataBlock* pResBlock, const char* idstr) {
   int32_t      code = 0;
@@ -636,7 +693,7 @@ static int32_t tsdbReaderCreate(SVnode* pVnode, SQueryTableDataCond* pCond, STsd
 
   setColumnIdSlotList(&pReader->suppInfo, pCond->colList, pCond->pSlotList, pCond->numOfCols);
 
-  taosThreadMutexInit(&pReader->readerMutex, NULL);
+  tsdbInitReaderLock(pReader);
 
   *ppReader = pReader;
   return code;
@@ -4015,7 +4072,7 @@ void tsdbReaderClose(STsdbReader* pReader) {
   tsdbUntakeReadSnap(pReader, pReader->pReadSnap, true);
   pReader->pReadSnap = NULL;
 
-  taosThreadMutexDestroy(&pReader->readerMutex);
+  tsdbUninitReaderLock(pReader);
 
   taosMemoryFree(pReader->status.uidCheckInfo.tableUidList);
   SIOCostSummary* pCost = &pReader->cost;
@@ -4162,16 +4219,16 @@ static int32_t tsdbSetQueryReseek(void* pQHandle) {
   int32_t      code = 0;
   STsdbReader* pReader = pQHandle;
 
-  code = taosThreadMutexTryLock(&pReader->readerMutex);
+  code = tsdbTryAcquireReader(pReader);
   if (code == 0) {
     if (pReader->suspended) {
-      taosThreadMutexUnlock(&pReader->readerMutex);
+      tsdbReleaseReader(pReader);
       return code;
     }
 
     tsdbReaderSuspend(pReader);
 
-    taosThreadMutexUnlock(&pReader->readerMutex);
+    tsdbReleaseReader(pReader);
 
     return code;
   } else if (code == EBUSY) {
@@ -4272,8 +4329,9 @@ bool tsdbNextDataBlock(STsdbReader* pReader) {
 
   SReaderStatus* pStatus = &pReader->status;
 
-  qTrace("tsdb/read: %p, take read mutex", pReader);
-  taosThreadMutexLock(&pReader->readerMutex);
+  int32_t code = tsdbAcquireReader(pReader);
+  qTrace("tsdb/read: %p, take read mutex, code: %d", pReader, code);
+
   if (pReader->suspended) {
     tsdbReaderResume(pReader);
   }
@@ -4285,7 +4343,7 @@ bool tsdbNextDataBlock(STsdbReader* pReader) {
       pStatus = &pReader->innerReader[0]->status;
       if (pStatus->composedDataBlock) {
         qTrace("tsdb/read: %p, unlock read mutex", pReader);
-        taosThreadMutexUnlock(&pReader->readerMutex);
+        tsdbReleaseReader(pReader);
       }
 
       return ret;
@@ -4308,7 +4366,7 @@ bool tsdbNextDataBlock(STsdbReader* pReader) {
   if (ret) {
     if (pStatus->composedDataBlock) {
       qTrace("tsdb/read: %p, unlock read mutex", pReader);
-      taosThreadMutexUnlock(&pReader->readerMutex);
+      tsdbReleaseReader(pReader);
     }
 
     return ret;
@@ -4328,7 +4386,7 @@ bool tsdbNextDataBlock(STsdbReader* pReader) {
       pStatus = &pReader->innerReader[1]->status;
       if (pStatus->composedDataBlock) {
         qTrace("tsdb/read: %p, unlock read mutex", pReader);
-        taosThreadMutexUnlock(&pReader->readerMutex);
+        tsdbReleaseReader(pReader);
       }
 
       return ret1;
@@ -4336,7 +4394,7 @@ bool tsdbNextDataBlock(STsdbReader* pReader) {
   }
 
   qTrace("tsdb/read: %p, unlock read mutex", pReader);
-  taosThreadMutexUnlock(&pReader->readerMutex);
+  tsdbReleaseReader(pReader);
 
   return false;
 }
@@ -4495,13 +4553,6 @@ static SSDataBlock* doRetrieveDataBlock(STsdbReader* pReader) {
   return pReader->pResBlock;
 }
 
-void tsdbReleaseDataBlock(STsdbReader* pReader) {
-  // SReaderStatus* pStatus = &pReader->status;
-  // if (!pStatus->composedDataBlock) {
-  taosThreadMutexUnlock(&pReader->readerMutex);
-  //}
-}
-
 SSDataBlock* tsdbRetrieveDataBlock(STsdbReader* pReader, SArray* pIdList) {
   STsdbReader* pTReader = pReader;
   if (pReader->type == TIMEWINDOW_RANGE_EXTERNAL) {
@@ -4520,7 +4571,7 @@ SSDataBlock* tsdbRetrieveDataBlock(STsdbReader* pReader, SArray* pIdList) {
   SSDataBlock* ret = doRetrieveDataBlock(pTReader);
 
   qTrace("tsdb/read-retrieve: %p, unlock read mutex", pReader);
-  taosThreadMutexUnlock(&pReader->readerMutex);
+  tsdbReleaseReader(pReader);
 
   return ret;
 }
@@ -4529,7 +4580,7 @@ int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
   SReaderStatus* pStatus = &pReader->status;
 
   qTrace("tsdb/reader-reset: %p, take read mutex", pReader);
-  taosThreadMutexLock(&pReader->readerMutex);
+  tsdbAcquireReader(pReader);
 
   if (pReader->suspended) {
     tsdbReaderResume(pReader);
@@ -4538,7 +4589,7 @@ int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
   if (isEmptyQueryTimeWindow(&pReader->window) || pReader->pReadSnap == NULL) {
     tsdbDebug("tsdb reader reset return %p", pReader->pReadSnap);
 
-    taosThreadMutexUnlock(&pReader->readerMutex);
+    tsdbReleaseReader(pReader);
 
     return TSDB_CODE_SUCCESS;
   }
@@ -4576,7 +4627,7 @@ int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
       tsdbError("%p reset reader failed, numOfTables:%d, query range:%" PRId64 " - %" PRId64 " in query %s", pReader,
                 numOfTables, pReader->window.skey, pReader->window.ekey, pReader->idStr);
 
-      taosThreadMutexUnlock(&pReader->readerMutex);
+      tsdbReleaseReader(pReader);
 
       return code;
     }
@@ -4587,7 +4638,7 @@ int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
             pReader, pReader->suid, numOfTables, pCond->twindows.skey, pReader->window.skey, pReader->window.ekey,
             pReader->idStr);
 
-  taosThreadMutexUnlock(&pReader->readerMutex);
+  tsdbReleaseReader(pReader);
 
   return code;
 }
@@ -4672,7 +4723,7 @@ int64_t tsdbGetNumOfRowsInMemTable(STsdbReader* pReader) {
   int64_t rows = 0;
 
   SReaderStatus* pStatus = &pReader->status;
-  taosThreadMutexLock(&pReader->readerMutex);
+  tsdbAcquireReader(pReader);
   if (pReader->suspended) {
     tsdbReaderResume(pReader);
   }
@@ -4702,7 +4753,7 @@ int64_t tsdbGetNumOfRowsInMemTable(STsdbReader* pReader) {
     pStatus->pTableIter = taosHashIterate(pStatus->pTableMap, pStatus->pTableIter);
   }
 
-  taosThreadMutexUnlock(&pReader->readerMutex);
+  tsdbReleaseReader(pReader);
 
   return rows;
 }