From de4bfb0ae3ae656a175844c518345c4f5563e6de Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Fri, 2 Jun 2017 16:58:46 +0800
Subject: [PATCH] bug fixed for createScheduler not cancel after closed. for
 issue #1758

---
 src/main/java/com/alibaba/druid/pool/DruidDataSource.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 256f6f7198..9ec5ca8da9 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -2001,6 +2001,10 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                 // addLast
                 lock.lock();
                 try {
+                    if (closed) {
+                        return;
+                    }
+
                     boolean emptyWait = true;
 
                     if (createError != null && poolingCount == 0) {