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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.
52 lines
2.6 KiB
Diff
52 lines
2.6 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: Mon, 4 Mar 2013 23:46:10 -0500
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Subject: [PATCH] Chunk Save Reattempt
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We commonly have "Stream Closed" errors on chunk saving, so this code should re-try to save the chunk in the event of failure and hopefully prevent rollbacks.
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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index 8adebb8408cc22ae7e9e89721645e5dd27a41cd8..038e2177182c94baa4af24f9111cf155ec342dfe 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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@@ -275,7 +275,7 @@ public class RegionFile implements AutoCloseable {
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return true;
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}
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} catch (IOException ioexception) {
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- com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(ioexception); // Paper
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+ com.destroystokyo.paper.util.SneakyThrow.sneaky(ioexception); // Paper - we want the upper try/catch to retry this
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return false;
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}
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}
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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index 45cec71b3b2f9444d7be7e5bf9fab166b28ea34d..ece0fd4b51d124be232e24d08f115b9267cb21cb 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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@@ -167,6 +167,7 @@ public class RegionFileStorage implements AutoCloseable {
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}
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// Paper end - rewrite chunk system
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try { // Paper
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+ int attempts = 0; Exception laste = null; while (attempts++ < 5) { try { // Paper
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if (nbt == null) {
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regionfile.clear(pos);
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@@ -191,7 +192,18 @@ public class RegionFileStorage implements AutoCloseable {
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dataoutputstream.close();
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}
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}
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+ // Paper start
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+ return;
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+ } catch (Exception ex) {
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+ laste = ex;
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+ }
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+ }
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+ if (laste != null) {
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+ com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(laste);
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+ net.minecraft.server.MinecraftServer.LOGGER.error("Failed to save chunk " + pos, laste);
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+ }
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+ // Paper end
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} finally { // Paper start
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regionfile.fileLock.unlock();
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} // Paper end
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