Paper/patches/server/0724-Do-not-allow-the-server-to-unload-chunks-at-request-.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Thu, 11 Mar 2021 02:32:30 -0800
Subject: [PATCH] Do not allow the server to unload chunks at request of
plugins
In general the chunk system is not well suited for this behavior,
especially if it is called during a chunk load. The chunks pushed
to be unloaded will simply be unloaded next tick, rather than
immediately.
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index d0170f92335b331d6904e8c27e75f97efc7875c7..b338abc1bd96e1bb5e90ed7594504c4e41f94eff 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -872,6 +872,7 @@ public class ServerChunkCache extends ChunkSource {
// CraftBukkit start - modelled on below
public void purgeUnload() {
+ if (true) return; // Paper - tickets will be removed later, this behavior isn't really well accounted for by the chunk system
this.level.getProfiler().push("purge");
this.distanceManager.purgeStaleTickets();
this.runDistanceManagerUpdates();