07548192b1
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing CraftBukkit Changes: cc7edd6bc SPIGOT-7051: Worldgen API does not run vanilla noise generation when shouldGenerateNoise is true
136 Zeilen
7.8 KiB
Diff
136 Zeilen
7.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 21 Jul 2018 14:27:34 -0400
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Subject: [PATCH] Duplicate UUID Resolve Option
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Due to a bug in https://github.com/PaperMC/Paper/commit/2e29af3df05ec0a383f48be549d1c03200756d24
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which was added all the way back in March of 2016, it was unknown (potentially not at the time)
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that an entity might actually change the seed of the random object.
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At some point, EntitySquid did start setting the seed. Due to this shared random, this caused
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every entity to use a Random object with a predictable seed.
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This has caused entities to potentially generate with the same UUID....
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Over the years, servers have had entities disappear, but no sign of trouble
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because CraftBukkit removed the log lines indicating that something was wrong.
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We have fixed the root issue causing duplicate UUID's, however we now have chunk
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files full of entities that have the same UUID as another entity!
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When these chunks load, the 2nd entity will not be added to the world correctly.
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If that chunk loads in a different order in the future, then it will reverse and the
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missing one is now the one added to the world and not the other. This results in very
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inconsistent entity behavior.
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This change allows you to recover any duplicate entity by generating a new UUID for it.
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This also lets you delete them instead if you don't want to risk having new entities added to
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the world that you previously did not see.
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But for those who are ok with leaving this inconsistent behavior, you may use WARN or NOTHING options.
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It is recommended you regenerate the entities, as these were legit entities, and deserve your love.
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diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
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index b6407f47e1be630f93ad185d56304f0ecbada6eb..375f66bf1617e255b3465b736076a65e080eb36e 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
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@@ -32,13 +32,17 @@ import java.io.Writer;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.BitSet;
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+import java.util.HashMap; // Paper
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+import java.util.Collection;
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import java.util.Iterator;
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import java.util.List;
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+import java.util.Map; // Paper
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import java.util.Objects;
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import java.util.Optional;
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import java.util.Queue;
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import java.util.Set;
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import java.util.concurrent.CancellationException;
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+import java.util.UUID; // Paper
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletionException;
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import java.util.concurrent.CompletionStage;
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@@ -877,6 +881,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
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entity.discard();
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needsRemoval = true;
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}
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+ checkDupeUUID(world, entity); // Paper
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return !needsRemoval;
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}));
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// CraftBukkit end
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@@ -927,6 +932,43 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
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});
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}
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+ // Paper start
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+ private static void checkDupeUUID(ServerLevel level, Entity entity) {
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+ io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.DuplicateUUID.DuplicateUUIDMode mode = level.paperConfig().entities.spawning.duplicateUuid.mode;
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+ if (mode != io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.DuplicateUUID.DuplicateUUIDMode.WARN
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+ && mode != io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.DuplicateUUID.DuplicateUUIDMode.DELETE
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+ && mode != io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.DuplicateUUID.DuplicateUUIDMode.SAFE_REGEN) {
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+ return;
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+ }
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+ Entity other = level.getEntity(entity.getUUID());
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+
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+ if (mode == io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.DuplicateUUID.DuplicateUUIDMode.SAFE_REGEN && other != null && !other.isRemoved()
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+ && Objects.equals(other.getEncodeId(), entity.getEncodeId())
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+ && entity.getBukkitEntity().getLocation().distance(other.getBukkitEntity().getLocation()) < level.paperConfig().entities.spawning.duplicateUuid.safeRegenDeleteRange
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+ ) {
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+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", deleted entity " + entity + " because it was near the duplicate and likely an actual duplicate. See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ entity.discard();
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+ return;
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+ }
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+ if (other != null && !other.isRemoved()) {
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+ switch (mode) {
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+ case SAFE_REGEN: {
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+ entity.setUUID(UUID.randomUUID());
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+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", regenerated UUID for " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ break;
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+ }
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+ case DELETE: {
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+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", deleted entity " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ entity.discard();
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+ break;
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+ }
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+ default:
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+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", doing nothing to " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ break;
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+ }
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+ }
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+ }
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+ // Paper end
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public CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> prepareTickingChunk(ChunkHolder holder) {
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ChunkPos chunkcoordintpair = holder.getPos();
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CompletableFuture<Either<List<ChunkAccess>, ChunkHolder.ChunkLoadingFailure>> completablefuture = this.getChunkRangeFuture(chunkcoordintpair, 1, (i) -> {
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diff --git a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
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index dfd1afc57664dd18c11f8a2547616074ccc55690..6e3d02fb68741fc3cf7d74ec659a37e5a1ecac5c 100644
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--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
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+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
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@@ -78,7 +78,22 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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private boolean addEntityUuid(T entity) {
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if (!this.knownUuids.add(entity.getUUID())) {
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+ // Paper start
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+ T conflict = this.visibleEntityStorage.getEntity(entity.getUUID());
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+ if (conflict != null && ((Entity) conflict).isRemoved()) {
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+ stopTracking(conflict); // remove the existing entity
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+ return true;
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+ }
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+ // Paper end
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PersistentEntitySectionManager.LOGGER.warn("UUID of added entity already exists: {}", entity);
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+ // Paper start
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+ if (net.minecraft.world.level.Level.DEBUG_ENTITIES && ((Entity) entity).level.paperConfig().entities.spawning.duplicateUuid.mode != io.papermc.paper.configuration.WorldConfiguration.Entities.Spawning.DuplicateUUID.DuplicateUUIDMode.NOTHING) {
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+ if (((Entity) entity).addedToWorldStack != null) {
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+ ((Entity) entity).addedToWorldStack.printStackTrace();
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+ }
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+ net.minecraft.server.level.ServerLevel.getAddToWorldStackTrace((Entity) entity).printStackTrace();
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+ }
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+ // Paper end
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return false;
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} else {
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return true;
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