From 2fafede916dc83820145ee9a6663fa1f9725d8da 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 8701777cc..ad3bd3808 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -358,11 +358,16 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
                 NBTTagCompound nbttagcompound = SupplierUtils.getIfExists(chunk.compoundSupplier); // Spigot // Paper
 
                 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); MinecraftServer.LOGGER.error("Failed to save chunk", laste); } // Paper
                 }
 
                 flag = true;
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index c80d724f0..3f9aa5923 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -210,8 +210,7 @@ public class RegionFile {
 
             this.b(i, j, (int) (SystemUtils.d() / 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
         }
 
     }
-- 
2.18.0