From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 11 Apr 2021 02:58:48 -0700
Subject: [PATCH] Don't read neighbour chunk data off disk when converting
 chunks

Lighting is purged on update anyways, so let's not add more
into the conversion process

diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
index 09a73383867d1ffadababd24428ee7a61ab98959..e605dbdb821b2d13217ac88426e50480a4e4741d 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
@@ -47,6 +47,7 @@ public class ChunkStorage implements AutoCloseable {
 
     // CraftBukkit start
     private boolean check(ServerChunkCache cps, int x, int z) {
+        if (true) return true; // Paper - Perf: this isn't even needed anymore, light is purged updating to 1.14+, why are we holding up the conversion process reading chunk data off disk - return true, we need to set light populated to true so the converter recognizes the chunk as being "full"
         ChunkPos pos = new ChunkPos(x, z);
         if (cps != null) {
             com.google.common.base.Preconditions.checkState(org.bukkit.Bukkit.isPrimaryThread(), "primary thread");