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Strange Server Lockup, Cannot Figure Out Cause


Question

Posted

Title: Tekkit

Version: 3.1.2

OS: Windows 7

Java Version: Version 7

Description of Problem:

After a certain amount of time, sometimes as short as 10 minutes and sometimes as long as 2 hours, the server will time everyone out. It doesn't shut down. It will continue to list everyone who was in the server as online even though it is empty, cannot be communicated with, and cannot be rejoined. The only way to fix it is to restart the server, which allows joing and gets everything working until the next timeout/crash.

The only plugins I have on are LWC, Essentials, Tekkit Restrict, Grief Prevention, KeepItems, and Permissions.

Error Messages:

Ususally it is

internal exception java.net.sockettimeoutexception read timed out

when getting kicked out of the server during a lock.

Error Log:


I've record two errors here. Each error is slightly different.

 

~*~*~

 

Error 1

 

---

 

18.07 13:24:21 [server] INFO at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

18.07 13:24:21 [server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

18.07 13:24:21 [server] INFO at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

18.07 13:24:21 [server] INFO at net.minecraft.server.World.tickEntities(World.java:1190)

18.07 13:24:21 [server] INFO at ee.TileCollector3.q_(TileCollector3.java:631)

18.07 13:24:21 [server] INFO at ee.TileCollector3.sendAllPackets(TileCollector3.java:494)

18.07 13:24:21 [server] INFO at ee.TileCollector3.sendEnergy(TileCollector3.java:478)

18.07 13:24:21 [server] INFO at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45)

18.07 13:24:21 [server] INFO at net.minecraft.server.World.getTileEntity(World.java:1644)

18.07 13:24:21 [server] INFO at java.util.ArrayList$Itr.next(ArrayList.java:791)

18.07 13:24:21 [server] INFO at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)

18.07 13:24:21 [server] INFO java.util.ConcurrentModificationException

18.07 13:24:21 [server] SEVERE Unexpected exception

18.07 13:24:21 [server] SEVERE at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

18.07 13:24:21 [server] SEVERE at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

18.07 13:24:21 [server] SEVERE at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

18.07 13:24:21 [server] SEVERE at net.minecraft.server.World.tickEntities(World.java:1190)

18.07 13:24:21 [server] SEVERE at ee.TileCollector3.q_(TileCollector3.java:631)

18.07 13:24:21 [server] SEVERE at ee.TileCollector3.sendAllPackets(TileCollector3.java:494)

18.07 13:24:21 [server] SEVERE at ee.TileCollector3.sendEnergy(TileCollector3.java:478)

18.07 13:24:21 [server] SEVERE at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45)

18.07 13:24:21 [server] SEVERE at net.minecraft.server.World.getTileEntity(World.java:1644)

18.07 13:24:21 [server] SEVERE at java.util.ArrayList$Itr.next(ArrayList.java:791)

18.07 13:24:21 [server] SEVERE at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)

18.07 13:24:21 [server] SEVERE java.util.ConcurrentModificationException

 

~*~*~

 

Error 2

 

---

 

18.07 13:44:44 [server] INFO Read timed out

18.07 13:43:35 [server] INFO at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

18.07 13:43:35 [server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

18.07 13:43:35 [server] INFO at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

18.07 13:43:35 [server] INFO at net.minecraft.server.World.tickEntities(World.java:1190)

18.07 13:43:35 [server] INFO at buildcraft.transport.TileGenericPipe.q_(TileGenericPipe.java:156)

18.07 13:43:35 [server] INFO at buildcraft.transport.Pipe.updateEntity(Pipe.java:106)

18.07 13:43:35 [server] INFO at buildcraft.transport.PipeTransportLiquids.updateEntity(PipeTransportLiquids.java:55)

18.07 13:43:35 [server] INFO at buildcraft.transport.PipeTransportLiquids.moveLiquids(PipeTransportLiquids.java:132)

18.07 13:43:35 [server] INFO at buildcraft.transport.PipeTransportLiquids.computeOutputs(PipeTransportLiquids.java:181)

18.07 13:43:35 [server] INFO at buildcraft.transport.PipeTransportLiquids.canReceiveLiquid(PipeTransportLiquids.java:47)

18.07 13:43:35 [server] INFO at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45)

18.07 13:43:35 [server] INFO at net.minecraft.server.World.getTileEntity(World.java:1644)

18.07 13:43:35 [server] INFO at java.util.ArrayList$Itr.next(ArrayList.java:791)

18.07 13:43:35 [server] INFO at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)

18.07 13:43:35 [server] INFO java.util.ConcurrentModificationException

18.07 13:43:35 [server] SEVERE Unexpected exception

18.07 13:43:35 [server] SEVERE at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

18.07 13:43:35 [server] SEVERE at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

18.07 13:43:35 [server] SEVERE at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

18.07 13:43:35 [server] SEVERE at net.minecraft.server.World.tickEntities(World.java:1190)

18.07 13:43:35 [server] SEVERE at buildcraft.transport.TileGenericPipe.q_(TileGenericPipe.java:156)

18.07 13:43:35 [server] SEVERE at buildcraft.transport.Pipe.updateEntity(Pipe.java:106)

18.07 13:43:35 [server] SEVERE at buildcraft.transport.PipeTransportLiquids.updateEntity(PipeTransportLiquids.java:55)

18.07 13:43:35 [server] SEVERE at buildcraft.transport.PipeTransportLiquids.moveLiquids(PipeTransportLiquids.java:132)

18.07 13:43:35 [server] SEVERE at buildcraft.transport.PipeTransportLiquids.computeOutputs(PipeTransportLiquids.java:181)

18.07 13:43:35 [server] SEVERE at buildcraft.transport.PipeTransportLiquids.canReceiveLiquid(PipeTransportLiquids.java:47)

18.07 13:43:35 [server] SEVERE at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45)

18.07 13:43:35 [server] SEVERE at net.minecraft.server.World.getTileEntity(World.java:1644)

18.07 13:43:35 [server] SEVERE at java.util.ArrayList$Itr.next(ArrayList.java:791)

18.07 13:43:35 [server] SEVERE at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)

18.07 13:43:35 [server] SEVERE java.util.ConcurrentModificationException

Edit - I actually may have fixed it. I finally found someone with a similar problem. http://dev.bukkit.org/bukkit-plugins/tekkit-restrict/tickets/26-constant-crashes/

So far it hasn't crashed since I made this fix.

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