From 51a45c9f4dcbdf4816bbd66bdaa4673bd2421f8a Mon Sep 17 00:00:00 2001
From: Mark Robert Miller <markrmiller@apache.org>
Date: Wed, 20 Nov 2013 21:59:56 +0000
Subject: [PATCH] SOLR-5479: Deal with null message in SolrLogLayout

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1543966 13f79535-47bb-0310-9956-ffa450edef68
---
 solr/core/src/java/org/apache/solr/util/SolrLogLayout.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/solr/core/src/java/org/apache/solr/util/SolrLogLayout.java b/solr/core/src/java/org/apache/solr/util/SolrLogLayout.java
index 4fc04e93216..6b6d011acf3 100644
--- a/solr/core/src/java/org/apache/solr/util/SolrLogLayout.java
+++ b/solr/core/src/java/org/apache/solr/util/SolrLogLayout.java
@@ -112,7 +112,9 @@ public class SolrLogLayout extends Layout {
   
   public String _format(LoggingEvent event) {
     String message = (String) event.getMessage();
-    
+    if (message == null) {
+      message = "";
+    }
     StringBuilder sb = new StringBuilder(message.length() + 80);
     
     long now = event.timeStamp;