From 2370ace922562c97edf210d3546d040dbda66513 Mon Sep 17 00:00:00 2001
From: Simon Willnauer <simonw@apache.org>
Date: Tue, 5 Jan 2016 15:45:41 +0100
Subject: [PATCH] assert that tragic even exception is never null

---
 .../java/org/elasticsearch/index/translog/TranslogWriter.java    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java b/core/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java
index d0051714b07..81e5d9407a5 100644
--- a/core/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java
+++ b/core/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java
@@ -106,6 +106,7 @@ public class TranslogWriter extends TranslogReader {
     }
 
     private synchronized final void closeWithTragicEvent(Throwable throwable) throws IOException {
+        assert throwable != null : "throwable must not be null in a tragic event";
         if (tragedy == null) {
             tragedy = throwable;
         } else {