From e3dd88a8cd49a86ef37b9c4204e87bf8e47aefb7 Mon Sep 17 00:00:00 2001
From: Jake Luciani <jake@apache.org>
Date: Fri, 9 May 2014 16:39:48 -0400
Subject: [PATCH] Work around netty offheap capacity check bug

patch by tjake; reviewed by Mikhail Stepura for CASSANDRA-7196
---
 src/java/org/apache/cassandra/transport/CBUtil.java | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/java/org/apache/cassandra/transport/CBUtil.java b/src/java/org/apache/cassandra/transport/CBUtil.java
index e6ba02967f..6ad468253b 100644
--- a/src/java/org/apache/cassandra/transport/CBUtil.java
+++ b/src/java/org/apache/cassandra/transport/CBUtil.java
@@ -330,8 +330,11 @@ public abstract class CBUtil
             return;
         }
 
-        cb.writeInt(bytes.remaining());
-        cb.writeBytes(bytes.duplicate());
+        int remaining = bytes.remaining();
+        cb.writeInt(remaining);
+
+        if (remaining > 0)
+            cb.writeBytes(bytes.duplicate());
     }
 
     public static int sizeOfValue(byte[] bytes)