From cbf727ae7ac9941fb6cdde28f927069e4dbae23a Mon Sep 17 00:00:00 2001
From: Rob Austin <rob.austin@boundedbuffer.co.uk>
Date: Fri, 2 Jan 2015 17:49:27 +0000
Subject: [PATCH] HCOLL-290 possibly fixed - Reported NPE in
 net.openhft.chronicle.map.TcpReplicator#heartBeatMonitor

---
 src/main/java/net/openhft/chronicle/map/TcpReplicator.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/net/openhft/chronicle/map/TcpReplicator.java b/src/main/java/net/openhft/chronicle/map/TcpReplicator.java
index 01bfb80aa..9a3eebdfe 100644
--- a/src/main/java/net/openhft/chronicle/map/TcpReplicator.java
+++ b/src/main/java/net/openhft/chronicle/map/TcpReplicator.java
@@ -300,6 +300,10 @@ final class TcpReplicator<K, V> extends AbstractChannelReplicator implements Clo
                 }
 
                 final Attached attachment = (Attached) key.attachment();
+
+                if (attachment == null)
+                    continue;
+
                 if (!attachment.hasRemoteHeartbeatInterval)
                     continue;