From c991beac64a6ae09471c64720c96ab8042591640 Mon Sep 17 00:00:00 2001
From: Kihwal Lee <kihwal@apache.org>
Date: Tue, 26 Apr 2016 11:46:46 -0500
Subject: [PATCH] HDFS-10329. Bad initialisation of StringBuffer in
 RequestHedgingProxyProvider. Contributed by Lin Yiqun.

(cherry picked from commit c6a2430b47692a72c500373d6fc1bce78652675b)
---
 .../hdfs/server/namenode/ha/RequestHedgingProxyProvider.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/RequestHedgingProxyProvider.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/RequestHedgingProxyProvider.java
index f4d2c6b8d49..d8a516e13ea 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/RequestHedgingProxyProvider.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/RequestHedgingProxyProvider.java
@@ -164,7 +164,7 @@ public class RequestHedgingProxyProvider<T> extends
       return successfulProxy;
     }
     Map<String, ProxyInfo<T>> targetProxyInfos = new HashMap<>();
-    StringBuilder combinedInfo = new StringBuilder('[');
+    StringBuilder combinedInfo = new StringBuilder("[");
     for (int i = 0; i < proxies.size(); i++) {
       ProxyInfo<T> pInfo = super.getProxy();
       incrementProxyIndex();