From fb47f1d11346fe45245a8fdb1b2cf9e188d3c0c8 Mon Sep 17 00:00:00 2001
From: Kohsuke Kawaguchi <kk@kohsuke.org>
Date: Thu, 10 Jul 2014 14:26:39 -0700
Subject: [PATCH] update to #index must be synchronized

---
 .../main/java/jenkins/model/lazy/AbstractLazyLoadRunMap.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/jenkins/model/lazy/AbstractLazyLoadRunMap.java b/core/src/main/java/jenkins/model/lazy/AbstractLazyLoadRunMap.java
index a575b2514a..5520960861 100644
--- a/core/src/main/java/jenkins/model/lazy/AbstractLazyLoadRunMap.java
+++ b/core/src/main/java/jenkins/model/lazy/AbstractLazyLoadRunMap.java
@@ -226,7 +226,7 @@ public abstract class AbstractLazyLoadRunMap<R> extends AbstractMap<Integer,R> i
      * Primarily for debugging and testing lazy loading behaviour.
      * @since 1.507
      */
-    public void purgeCache() {
+    public synchronized void purgeCache() {
         index = new Index();
         fullyLoaded = false;
         loadIdOnDisk();
-- 
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