diff --git a/source/dnode/mgmt/node_util/src/dmEps.c b/source/dnode/mgmt/node_util/src/dmEps.c
index eccd556eea..c585a780ac 100644
--- a/source/dnode/mgmt/node_util/src/dmEps.c
+++ b/source/dnode/mgmt/node_util/src/dmEps.c
@@ -357,7 +357,7 @@ _OVER:
 
 int32_t dmGetDnodeSize(SDnodeData *pData) {
   int32_t size = 0;
-  taosThreadRwlockWrlock(&pData->lock);
+  taosThreadRwlockRdlock(&pData->lock);
   size = taosArrayGetSize(pData->dnodeEps);
   taosThreadRwlockUnlock(&pData->lock);
   return size;