YARN-2988. Graph#save() may leak file descriptors. (Ted Yu via ozawa)

hadoop-yarn-project/CHANGES.txt

@@ -284,6 +284,8 @@ Release 2.7.0 - UNRELEASED
     YARN-2946. Fixed potential deadlock in RMStateStore. (Rohith Sharmaks via
     jianhe)
 
+    YARN-2988. Graph#save() may leak file descriptors. (Ted Yu via ozawa)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/state/Graph.java

@@ -188,10 +188,10 @@ public class Graph {
   }
 
   public void save(String filepath) throws IOException {
-    OutputStreamWriter fout = new OutputStreamWriter(
-        new FileOutputStream(filepath), Charset.forName("UTF-8"));
-    fout.write(generateGraphViz());
-    fout.close();
+    try (OutputStreamWriter fout = new OutputStreamWriter(
+        new FileOutputStream(filepath), Charset.forName("UTF-8"));) {
+      fout.write(generateGraphViz());
+    }
   }
 
   public static List<Edge> combineEdges(List<Edge> edges) {