From 394bd4c6da961a52424b793cd28990559710b83b Mon Sep 17 00:00:00 2001
From: Oliver Gierke <ogierke@pivotal.io>
Date: Thu, 31 May 2018 10:26:32 +0200
Subject: [PATCH] DATACMNS-1328 - DefaultRepositoryInvokerFactory now uses a
 ConcurrentHashMap.

We now use ConcurrentHashMap to prevent ConcurrentModificationExceptions in multithreaded access to repository invokers.
---
 .../repository/support/DefaultRepositoryInvokerFactory.java   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/springframework/data/repository/support/DefaultRepositoryInvokerFactory.java b/src/main/java/org/springframework/data/repository/support/DefaultRepositoryInvokerFactory.java
index bd2f3de8f..db8c07b24 100644
--- a/src/main/java/org/springframework/data/repository/support/DefaultRepositoryInvokerFactory.java
+++ b/src/main/java/org/springframework/data/repository/support/DefaultRepositoryInvokerFactory.java
@@ -16,8 +16,8 @@
 package org.springframework.data.repository.support;
 
 import java.io.Serializable;
-import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 import org.springframework.core.convert.ConversionService;
 import org.springframework.data.repository.CrudRepository;
@@ -64,7 +64,7 @@ public class DefaultRepositoryInvokerFactory implements RepositoryInvokerFactory
 
 		this.repositories = repositories;
 		this.conversionService = conversionService;
-		this.invokers = new HashMap<Class<?>, RepositoryInvoker>();
+		this.invokers = new ConcurrentHashMap<Class<?>, RepositoryInvoker>();
 	}
 
 	/*