From c7499f2d242c64bee8f822a22161d956525f7153 Mon Sep 17 00:00:00 2001
From: Tsz-Wo Nicholas Sze <szetszwo@hortonworks.com>
Date: Tue, 19 Dec 2017 10:02:30 +0800
Subject: [PATCH] HDFS-12347. TestBalancerRPCDelay#testBalancerRPCDelay fails
 very frequently.  Contributed by Bharat Viswanadham

---
 .../org/apache/hadoop/hdfs/server/balancer/TestBalancer.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
index a900ad191d..9452b8b1b2 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
@@ -2084,7 +2084,7 @@ void testBalancerRPCDelay() throws Exception {
     initConf(conf);
     conf.setInt(DFSConfigKeys.DFS_BALANCER_DISPATCHERTHREADS_KEY, 30);
 
-    int numDNs = 40;
+    int numDNs = 20;
     long[] capacities = new long[numDNs];
     String[] racks = new String[numDNs];
     for(int i = 0; i < numDNs; i++) {