From eeb3469a2c0350e3c4251dccf5947f7458e29657 Mon Sep 17 00:00:00 2001
From: Hong Sibao <hongsibao@huawei.com>
Date: Sat, 21 Mar 2015 20:49:05 +0800
Subject: [PATCH] Fix the bug of equals function of FSKey.

---
 .../src/main/java/org/apache/flink/core/fs/FileSystem.java   | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/flink-core/src/main/java/org/apache/flink/core/fs/FileSystem.java b/flink-core/src/main/java/org/apache/flink/core/fs/FileSystem.java
index 7e8c667c8434e..2c2b0cba48576 100644
--- a/flink-core/src/main/java/org/apache/flink/core/fs/FileSystem.java
+++ b/flink-core/src/main/java/org/apache/flink/core/fs/FileSystem.java
@@ -107,6 +107,11 @@ public FSKey(final String scheme, final String authority) {
 		@Override
 		public boolean equals(final Object obj) {
 
+             if(obj == this)
+             {
+                 return  true;
+             }
+
 			if (obj instanceof FSKey) {
 				final FSKey key = (FSKey) obj;