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 ec97b740a935196d689fac7ff239968b87884a96..90ab7190b1f59f2a6440ebfa6454a4b395f45ab5 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -940,8 +940,16 @@ public final class CraftServer implements Server {
             world.spigotConfig.init(); // Spigot
         }
 
+        Plugin[] pluginClone = pluginManager.getPlugins().clone(); // Paper
         this.pluginManager.clearPlugins();
         this.commandMap.clearCommands();
+        // Paper start
+        for (Plugin plugin : pluginClone) {
+            entityMetadata.removeAll(plugin);
+            worldMetadata.removeAll(plugin);
+            playerMetadata.removeAll(plugin);
+        }
+        // Paper end
         this.reloadData();
         org.spigotmc.SpigotConfig.registerCommands(); // Spigot
         io.papermc.paper.command.PaperCommands.registerCommands(this.console); // Paper