diff --git a/src/resource_pool.go b/src/resource_pool.go
index 93b4bd4..10ce203 100644
--- a/src/resource_pool.go
+++ b/src/resource_pool.go
@@ -247,6 +247,7 @@ func (pool *ResourcePool) saveStatusHistory() {
 
 /* update node info */
 func (pool *ResourcePool) update(node NodeStatus) {
+	log.Info("Update", node.ClientID)
 	pool.poolsMu.Lock()
 	defer pool.poolsMu.Unlock()
 	segID := pool.getNodePool(node.ClientID)