Prevent NullPointerException when backing store file is deleted externally

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@749697 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 11 insertions, 7 deletions

diff --git a/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/FileQueueBackingStore.java b/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/FileQueueBackingStore.java
index 4e3b2298d1..bce06fad14 100644
--- a/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/FileQueueBackingStore.java
+++ b/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/FileQueueBackingStore.java
@@ -245,14 +245,18 @@ public class FileQueueBackingStore implements QueueBackingStore
         }
         finally
         {
-            try
+            // In a FileNotFound situation writer will be null.
+            if (writer != null)
             {
-                writer.flush();
-                writer.close();
-            }
-            catch (IOException e)
-            {
-                error = e;
+                try
+                {
+                    writer.flush();
+                    writer.close();
+                }
+                catch (IOException e)
+                {
+                    error = e;
+                }
             }
         }