papermc/Spigot-Server-Patches/0377-Optimize-Persistent-Data-Loading.patch
Spottedleaf 5c7081fecc Update upstream & fix some chunk related issues (#2177)
* Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
45690fe9 SPIGOT-5047: Correct slot types for 1.14 inventories

CraftBukkit Changes:
4090d01f SPIGOT-5047: Correct slot types for 1.14 inventories
e8c08362 SPIGOT-5046: World#getLoadedChunks returning inaccessible cached chunks.
d445af3b SPIGOT-5067: Add item meta for 1.14 spawn eggs

* Bring Chunk load checks in-line with spigot

As of the last upstream merge spigot now checks ticket level status
when returning loaded chunks for a world from api. Now our checks
will respect that decision.

* Fix spawn ticket levels

Vanilla would keep the inner chunks of spawn available for ticking,
however my changes made all chunks non-ticking. Resolve by changing
ticket levels for spawn chunks inside the border to respect this
behavior.


* Make World#getChunkIfLoadedImmediately return only entity ticking chunks

Mojang appears to be using chunks with level > 33 (non-ticking chunks)
as cached chunks and not actually loaded chunks.

* Bring all loaded checks in line with spigot

Loaded chunks must be at least border  chunks, or level <= 33
2019-06-14 03:27:40 +01:00

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2.6 KiB
Diff

From 7650bdc00afbdf24bfd7808de478096637b56178 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 29 Mar 2019 01:25:11 -0400
Subject: [PATCH] Optimize Persistent Data Loading
removes Mineshaft loading legacy as we had pre 1.13.2 to avoid managing
that very large data file from legacy systems.
Previous to 1.13.2 these data files were never loaded to begin with, so they
effectively do not contain valid/relevant data.
These files take a long time to convert on large worlds and crashes the server.
Additionally, cache the result of a file being missing so we don't keep spam checking it.
diff --git a/src/main/java/net/minecraft/server/WorldPersistentData.java b/src/main/java/net/minecraft/server/WorldPersistentData.java
index 47a4ea9985..62081349f1 100644
--- a/src/main/java/net/minecraft/server/WorldPersistentData.java
+++ b/src/main/java/net/minecraft/server/WorldPersistentData.java
@@ -26,6 +26,7 @@ public class WorldPersistentData {
this.c = datafixer;
this.d = file;
}
+ private static final PersistentBase NO_RESULT = new ForcedChunk(); // Paper
private File a(String s) {
return new File(this.d, s + ".dat");
@@ -46,6 +47,7 @@ public class WorldPersistentData {
@Nullable
public <T extends PersistentBase> T b(Supplier<T> supplier, String s) {
+ if ("Mineshaft_index".equals(s) || "Mineshaft".equals(s)) return null; // Paper - mineshaft is useless data
PersistentBase persistentbase = (PersistentBase) this.data.get(s);
if (persistentbase == null) {
@@ -58,13 +60,13 @@ public class WorldPersistentData {
persistentbase.a(nbttagcompound.getCompound("data"));
this.data.put(s, persistentbase);
- }
+ } else this.data.put(s, NO_RESULT); // Paper
} catch (Exception exception) {
WorldPersistentData.LOGGER.error("Error loading saved data: {}", s, exception);
}
}
- return (T) persistentbase; // Paper - decompile fix
+ return (T) persistentbase == NO_RESULT ? null : (T) persistentbase; // Paper - decompile fix // Paper
}
public void a(PersistentBase persistentbase) {
@@ -72,6 +74,7 @@ public class WorldPersistentData {
}
public NBTTagCompound a(String s, int i) throws IOException {
+ if ("Mineshaft".equals(s) || "Mineshaft_index".equals(s)) return new NBTTagCompound(); // Paper
File file = this.a(s);
PushbackInputStream pushbackinputstream = new PushbackInputStream(new FileInputStream(file), 2);
Throwable throwable = null;
--
2.21.0