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Chunk Save Reattempt

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Sometimes a chunk region file is closed prematurely, resulting in a "Stream Closed" error on chunk saving.
Ultimately there is a race condition that causes it, but re-trying the save will avoid the issue.

Retry the save 5 times to try our best to avoid rollbacks due to chunk save failures.
This commit is contained in:
Aikar 2016-03-18 01:35:26 -04:00
parent ca2ddce0ac
commit 98b86017fa
1 changed files with 46 additions and 0 deletions
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Spigot-Server-Patches/0084-Chunk-Save-Reattempt.patch Normal file
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@ -0,0 +1,46 @@
From 798d650695eced24d570d3234da5daf0176aa1ab Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 4 Mar 2013 23:46:10 -0500
Subject: [PATCH] Chunk Save Reattempt
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.
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index 336e780..7eb13f8 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -170,11 +170,16 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
NBTTagCompound nbttagcompound = chunk.compound; // Paper - Chunk queue improvements
if (nbttagcompound != null) {
+ int attempts = 0; Exception laste = null; while (attempts++ < 5) { // Paper
try {
this.b(chunkcoordintpair, nbttagcompound);
+ laste = null; break; // Paper
} catch (Exception exception) {
- ChunkRegionLoader.a.error("Failed to save chunk", exception);
+ //ChunkRegionLoader.a.error("Failed to save chunk", exception); // Paper
+ laste = exception; // Paper
}
+ try {Thread.sleep(10);} catch (InterruptedException e) {e.printStackTrace();} } // Paper
+ if (laste != null) { com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(laste); laste.printStackTrace(); } // Paper
}
synchronized (lock) { if (this.b.get(chunkcoordintpair) == nbttagcompound) { this.b.remove(chunkcoordintpair); } }// Paper - This will not equal if a newer version is still pending
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index aa74c87..9d07be1 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -248,8 +248,7 @@ public class RegionFile {
this.b(i, j, (int) (MinecraftServer.av() / 1000L));
} catch (IOException ioexception) {
- ioexception.printStackTrace();
- ServerInternalException.reportInternalException(ioexception); // Paper
+ org.spigotmc.SneakyThrow.sneaky(ioexception); // Paper - we want the upper try/catch to retry this
}
}
--
2.7.3