Merge pull request #6088 from OmniFish-EE/ondromih-2026-06-3.1-fix-memory-leak

Fix memory leak (port to 3.1)

core-server/src/main/java/org/glassfish/jersey/server/ApplicationHandler.java

diff --git a/core-server/src/main/java/org/glassfish/jersey/server/ApplicationHandler.java b/core-server/src/main/java/org/glassfish/jersey/server/ApplicationHandler.java
index 158ef0e..26ffd03 100644
--- a/core-server/src/main/java/org/glassfish/jersey/server/ApplicationHandler.java
+++ b/core-server/src/main/java/org/glassfish/jersey/server/ApplicationHandler.java
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2026 Contributors to the Eclipse Foundation
  * Copyright (c) 2011, 2025 Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2018 Payara Foundation and/or its affiliates.
  *
@@ -362,9 +363,25 @@
 
             injectionManager.completeRegistration();
 
-            bootstrapConfigurators.forEach(configurator -> configurator.postInit(injectionManager, bootstrapBag));
+            ComponentProviderConfigurator componentProviderConfigurator = null;
+            for (BootstrapConfigurator configurator : bootstrapConfigurators) {
+                if (configurator instanceof ComponentProviderConfigurator) {
+                    componentProviderConfigurator = (ComponentProviderConfigurator) configurator;
+                } else {
+                    configurator.postInit(injectionManager, bootstrapBag);
+                }
+            }
+
             resourceModelConfigurator.postInit(injectionManager, bootstrapBag);
 
+            /*
+                postInit on ComponentProviderConfigurator must be called last to clean up thread local,
+                which is also possibly set by other configurators
+            */
+            if (componentProviderConfigurator != null) {
+                componentProviderConfigurator.postInit(injectionManager, bootstrapBag);
+            }
+
             Iterable<ApplicationEventListener> appEventListeners =
                     Providers.getAllProviders(injectionManager, ApplicationEventListener.class, new RankedComparator<>());