From d0393bdf28860bb1ede57420e54baa748f69b3b6 Mon Sep 17 00:00:00 2001
From: tedyu <yuzhihong@gmail.com>
Date: Fri, 6 Jan 2017 09:08:55 -0800
Subject: [PATCH] HBASE-17431 Incorrect precheck condition in
 RoundRobinPool#get() (Jan Hentschel)

---
 .../src/main/java/org/apache/hadoop/hbase/util/PoolMap.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
index b683fcc9e4e..f89215b1ae8 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
@@ -360,7 +360,7 @@ public class PoolMap<K, V> implements Map<K, V> {
 
     @Override
     public R get() {
-      if (super.size() < maxSize) {
+      if (super.size() <= 0) {
         return null;
       }
       nextResource %= super.size();