From 78d6a3402c43aa5bbdbcf66ab8dd097af3e391d9 Mon Sep 17 00:00:00 2001
From: stack <stack@apache.org>
Date: Tue, 10 Mar 2015 08:42:32 -0700
Subject: [PATCH] HBASE-13188 java.lang.ArithmeticException issue in
 BoundedByteBufferPool.putBuffer

---
 .../org/apache/hadoop/hbase/io/BoundedByteBufferPool.java    | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hbase-common/src/main/java/org/apache/hadoop/hbase/io/BoundedByteBufferPool.java b/hbase-common/src/main/java/org/apache/hadoop/hbase/io/BoundedByteBufferPool.java
index 10b9bf6ead7..bff0c7734c5 100644
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/io/BoundedByteBufferPool.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/io/BoundedByteBufferPool.java
@@ -101,7 +101,10 @@ public class BoundedByteBufferPool {
     } else {
       int size = this.buffers.size(); // This size may be inexact.
       this.totalReservoirCapacity += bb.capacity();
-      int average = this.totalReservoirCapacity / size;
+      int average = 0;
+      if (size != 0) {
+        average = this.totalReservoirCapacity / size;
+      }
       if (average > this.runningAverage && average < this.maxByteBufferSizeToCache) {
         this.runningAverage = average;
       }