From 60c2ec5fe77f4ccd66742ef3e6002443327325b2 Mon Sep 17 00:00:00 2001
From: John Blum <jblum@vmware.com>
Date: Thu, 9 Sep 2021 10:03:47 -0700
Subject: [PATCH] Change managed Set of GatewayReceivers from
 ConcurrentSkipListSet to a synchronized HashSet.

org.apache.geode.cache.wan.GatewayReceiver does not implement java.lang.Comparable and is not naturally ordered (sortable) and therefore cannot be stored in a ConcurrentSkipListSet without a custom Comparator.
---
 .../data/gemfire/tests/mock/GemFireMockObjectsSupport.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java b/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java
index 5bf7880..fc1db70 100644
--- a/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java
+++ b/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java
@@ -270,7 +270,7 @@ public abstract class GemFireMockObjectsSupport extends MockObjectsSupport {
 
 	private static final Map<String, RegionAttributes<Object, Object>> regionAttributes = new ConcurrentHashMap<>();
 
-	private static final Set<GatewayReceiver> gatewayReceivers = new ConcurrentSkipListSet<>();
+	private static final Set<GatewayReceiver> gatewayReceivers = Collections.synchronizedSet(new HashSet<>());
 
 	private static final Set<String> registeredPoolNames = new ConcurrentSkipListSet<>();