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 176746f19c07b059164f4b4b3bd2ec82ec79656b..bc0bff6f06a74e2bb3f00fac2fdcc543bc970c2f 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -962,8 +962,16 @@ 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