geforkt von Mirrors/Paper
01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
38 Zeilen
2.1 KiB
Diff
38 Zeilen
2.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Zach Brown <zach@zachbr.io>
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Date: Tue, 23 Jul 2019 20:44:47 -0500
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Subject: [PATCH] Do not let the server load chunks from newer versions
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If the server attempts to load a chunk generated by a newer version of
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the game, immediately stop the server to prevent data corruption.
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You can override this functionality at your own peril.
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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index 3c61be19c65b2da9283b2aba2b4e66f84bac6e1c..31e552e1b4c3a6931a61a88a75965a0427d6de8d 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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@@ -126,9 +126,22 @@ public class ChunkSerializer {
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return holder.protoChunk;
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}
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+ // Paper start
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+ private static final int CURRENT_DATA_VERSION = SharedConstants.getCurrentVersion().getDataVersion().getVersion();
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+ private static final boolean JUST_CORRUPT_IT = Boolean.getBoolean("Paper.ignoreWorldDataVersion");
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+ // Paper end
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public static InProgressChunkHolder loadChunk(ServerLevel world, PoiManager poiStorage, ChunkPos chunkPos, CompoundTag nbt, boolean distinguish) {
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java.util.ArrayDeque<Runnable> tasksToExecuteOnMain = new java.util.ArrayDeque<>();
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// Paper end
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+ // Paper start - Do NOT attempt to load chunks saved with newer versions
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+ if (nbt.contains("DataVersion", 99)) {
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+ int dataVersion = nbt.getInt("DataVersion");
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+ if (!JUST_CORRUPT_IT && dataVersion > CURRENT_DATA_VERSION) {
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+ new RuntimeException("Server attempted to load chunk saved with newer version of minecraft! " + dataVersion + " > " + CURRENT_DATA_VERSION).printStackTrace();
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+ System.exit(1);
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+ }
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+ }
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+ // Paper end
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ChunkPos chunkcoordintpair1 = new ChunkPos(nbt.getInt("xPos"), nbt.getInt("zPos")); // Paper - diff on change, see ChunkSerializer#getChunkCoordinate
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if (!Objects.equals(chunkPos, chunkcoordintpair1)) {
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