From d4417dae4f38b58d41517a0263484da73ed41b75 Mon Sep 17 00:00:00 2001
From: Daniel Templeton <templedf@apache.org>
Date: Thu, 31 Aug 2017 09:35:01 -0700
Subject: [PATCH] YARN-6780. ResourceWeights.toString() cleanup (Contributed by
 weiyuan via Daniel Templeton)

---
 .../yarn/server/resourcemanager/resource/ResourceWeights.java  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/resource/ResourceWeights.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/resource/ResourceWeights.java
index 3ce15170eb..b66a5d0d46 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/resource/ResourceWeights.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/resource/ResourceWeights.java
@@ -54,8 +54,9 @@ public float getWeight(ResourceType resourceType) {
     return weights[resourceType.ordinal()];
   }
   
+  @Override
   public String toString() {
-    StringBuffer sb = new StringBuffer();
+    StringBuilder sb = new StringBuilder();
     sb.append("<");
     for (int i = 0; i < ResourceType.values().length; i++) {
       if (i != 0) {