From 9c1c415e4c58b334bc1339754fae75f2e991dfa2 Mon Sep 17 00:00:00 2001
From: Gabor Somogyi <gabor.g.somogyi@gmail.com>
Date: Wed, 14 Feb 2018 13:55:05 +0100
Subject: [PATCH] [SPARK-23422][Core] YarnShuffleIntegrationSuite fix when
 SPARK_PREPEND_CLASSES set to 1

---
 .../main/scala/org/apache/spark/serializer/KryoSerializer.scala  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala b/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala
index 538ae05e4eea1..72427dd6ce4d4 100644
--- a/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala
+++ b/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala
@@ -206,6 +206,7 @@ class KryoSerializer(conf: SparkConf)
         kryo.register(clazz)
       } catch {
         case NonFatal(_) => // do nothing
+        case _: NoClassDefFoundError if Utils.isTesting => // See SPARK-23422.
       }
     }