From 443c5d677ff54775dbfbb592005a1405645159a5 Mon Sep 17 00:00:00 2001
From: Fabian Hueske <fabian.hueske@tu-berlin.de>
Date: Thu, 15 May 2014 17:52:14 +0200
Subject: [PATCH] Improved exception message in WritableTypeInfo.

---
 .../eu/stratosphere/api/java/typeutils/WritableTypeInfo.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/stratosphere-java/src/main/java/eu/stratosphere/api/java/typeutils/WritableTypeInfo.java b/stratosphere-java/src/main/java/eu/stratosphere/api/java/typeutils/WritableTypeInfo.java
index d13a31dac3c..56fc7e16083 100644
--- a/stratosphere-java/src/main/java/eu/stratosphere/api/java/typeutils/WritableTypeInfo.java
+++ b/stratosphere-java/src/main/java/eu/stratosphere/api/java/typeutils/WritableTypeInfo.java
@@ -43,7 +43,8 @@ public class WritableTypeInfo<T extends Writable> extends TypeInformation<T> imp
 			return new WritableComparator(sortOrderAscending, typeClass);
 		}
 		else {
-			throw new UnsupportedOperationException("Writable does not implement Comparable interface.");
+			throw new UnsupportedOperationException("Cannot create Comparator for "+typeClass.getCanonicalName()+". " +
+													"Class does not implement Comparable interface.");
 		}
 	}
 
-- 
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