From 0000000000000000000000000000000000000000 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 2ed74cd9fc48ce398e597dfc0bf333d085fe1437..ddb16ca8b69adc6d7e7efda7a7fb906234c19cb4 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -825,8 +825,18 @@ 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