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From cbedcec343621db663f87db9845e8bcfdcf1550e Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 18 Mar 2016 13:50:14 -0400
Subject: [PATCH] Remove Metadata on reload

Metadata is not meant to persist reload as things break badly with non primitive types
This will remove metadata on reload so it does not crash everything if a plugin uses it.

diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index b911220e7..8f31492cb 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -799,8 +799,18 @@ public final class CraftServer implements Server {
             world.paperConfig.init(); // Paper
         }
 
+        Plugin[] pluginClone = pluginManager.getPlugins().clone(); // Paper
         pluginManager.clearPlugins();
         commandMap.clearCommands();
+
+        // Paper start
+        for (Plugin plugin : pluginClone) {
+            entityMetadata.removeAll(plugin);
+            worldMetadata.removeAll(plugin);
+            playerMetadata.removeAll(plugin);
+        }
+        // Paper end
+
         resetRecipes();
         reloadData();
         org.spigotmc.SpigotConfig.registerCommands(); // Spigot
-- 
2.20.1