From 27de6fef6a852c0801b5d55d0e69096878bd7909 Mon Sep 17 00:00:00 2001
From: niranda <niranda.perera@gmail.com>
Date: Fri, 1 May 2015 11:27:45 -0700
Subject: [PATCH] changing persistence engine trait to an abstract class

Author: niranda <niranda.perera@gmail.com>

Closes #5832 from nirandaperera/PersistanceEngine_abstract_class and squashes the following commits:

67b9d5a [niranda] changing persistence engine trait to an abstract class
---
 .../org/apache/spark/deploy/master/PersistenceEngine.scala      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/scala/org/apache/spark/deploy/master/PersistenceEngine.scala b/core/src/main/scala/org/apache/spark/deploy/master/PersistenceEngine.scala
index da5060778e..a03d460509 100644
--- a/core/src/main/scala/org/apache/spark/deploy/master/PersistenceEngine.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/master/PersistenceEngine.scala
@@ -33,7 +33,7 @@ import scala.reflect.ClassTag
  * The implementation of this trait defines how name-object pairs are stored or retrieved.
  */
 @DeveloperApi
-trait PersistenceEngine {
+abstract class PersistenceEngine {
 
   /**
    * Defines how the object is serialized and persisted. Implementation will
-- 
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