From 2f6b05e80a6570a18f7fb7e5b896bfaef2ced9ab Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Fri, 2 Sep 2011 16:58:09 +0000
Subject: [PATCH] git-svn-id: http://code.alibabatech.com/svn/druid/trunk@592
 b9813039-fb51-4c41-a8b9-e21c2acb5095

---
 src/main/java/com/alibaba/druid/pool/DruidDataSource.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index fb5e44dd4e..eba55e8443 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -627,6 +627,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                 // addLast
                 lock.lock();
                 try {
+                    // 必须存在线程等待，才创建连接
                     if (lock.getWaitQueueLength(notEmpty) == 0) {
                         lowWater.await();
                         continue;