[1.47] SMP Exception in server tick loop java.util.ConcurrentModificationException

There are some issues with solar panels (from IC2) and monitors in the same chunks reported:

http://bt.industrial-craft.net/view.php?id=110
http://bt.industrial-craft.net/view.php?id=136

I'm also getting some crashes since i installed ComputerCraft like this:

Spoiler

—- Minecraft Crash Report —-
// I'm sorry, Dave.

Time: 12/5/12 5:12 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at ii.a(EntityTracker.java:202)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:680)
at ho.r(DedicatedServer.java:252)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:587)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:494)
at fy.run(SourceFile:856)


A detailed walkthrough of the error, its code path and all known details is as follows:
—————————————————————————————

– System Details –
Details:
Minecraft Version: 1.4.5
Operating System: Linux (amd64) version 2.6.32-14-pve
Java Version: 1.7.0_05, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 337447720 bytes (321 MB) / 1838153728 bytes (1753 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 2 total; -Xms1G -Xmx2G
AABB Pool Size: 11393 (638008 bytes; 0 MB) allocated, 5834 (326704 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.23 FML v4.5.2.459 Minecraft Forge 6.4.1.407 28 mods loaded, 28 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
TreeCapitator [TreeCapitator] ([1.4.5]TreeCapitator.Forge.1.4.5.r02.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
jammyfurniture [Jammy Furniture Mod] (1.4.5_Jammy_Furniture_Mod_V4.1_Beta_2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ComputerCraft [ComputerCraft] (ComputerCraft1.47.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
CCTurtle [ComputerCraft Turtles] (ComputerCraft1.47.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
MoCreatures [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v4.2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Dynmap [Dynmap] (Dynmap-1.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ExtrabiomesXL [ExtrabiomesXL] (ExtrabiomesXL-universal-3.5.0b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
IC2 [IndustrialCraft 2] (industrialcraft-2_1.109.113-lf.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
NetherOres [Nether Ores] (NetherOres_1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Core [BuildCraft] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Energy [BC Energy] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
PowerConverters [Power Converters] (PowerConverters_1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Builders [BC Builders] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Factory [BC Factory] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Railcraft [Railcraft] (Railcraft_1.4.5b-6.9.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_SmartMoving [Smart Moving] (Smart Moving Server for Minecraft Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
TheRCMod [The RC Mod] (TheRCMod v2.2 [Alpha_5].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
LoginMessage [LoginMessage] ([forge_universal][1.4.5]LoginMessage_v0.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Backpack [Backpack] (backpack-1.5.4-1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Transport [BC Transport] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Silicon [BC Silicon] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
AdvancedSolarPanel [Advanced Solar Panels] (mod_AdvancedSolarPanels_3_3_0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
PortalGun [Portal Gun] (portalgun1.4.4v0.1_universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 4910 (274960 bytes; 0 MB) allocated, 3221 (180376 bytes; 0 MB) used
Player Count: 3 / 20; [iq['Pakus'/1104260, l='world', x=-556.39, y=59.00, z=2643.74], iq['Pardal'/1072443, l='world', x=-560.06, y=59.00, z=2646.91], iq['Razorbane'/1137130, l='world', x=-553.33, y=62.38, z=2718.63]]
Is Modded: Definitely; Server brand changed to 'forge,fml'
Type: Dedicated Server (map_server.txt)

I don't know if I should give more info about anything, but if so, just ask, i have a lot of logs and crashlog saved.

trollkemada, on 06 December 2012 - 07:18 AM said:

There are some issues with solar panels (from IC2) and monitors in the same chunks reported:

http://bt.industrial-craft.net/view.php?id=110
http://bt.industrial-craft.net/view.php?id=136

I'm also getting some crashes since i installed ComputerCraft like this:

Spoiler

—- Minecraft Crash Report —-
// I'm sorry, Dave.

Time: 12/5/12 5:12 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at ii.a(EntityTracker.java:202)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:680)
at ho.r(DedicatedServer.java:252)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:587)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:494)
at fy.run(SourceFile:856)


A detailed walkthrough of the error, its code path and all known details is as follows:
—————————————————————————————

– System Details –
Details:
Minecraft Version: 1.4.5
Operating System: Linux (amd64) version 2.6.32-14-pve
Java Version: 1.7.0_05, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 337447720 bytes (321 MB) / 1838153728 bytes (1753 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 2 total; -Xms1G -Xmx2G
AABB Pool Size: 11393 (638008 bytes; 0 MB) allocated, 5834 (326704 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.23 FML v4.5.2.459 Minecraft Forge 6.4.1.407 28 mods loaded, 28 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
TreeCapitator [TreeCapitator] ([1.4.5]TreeCapitator.Forge.1.4.5.r02.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
jammyfurniture [Jammy Furniture Mod] (1.4.5_Jammy_Furniture_Mod_V4.1_Beta_2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ComputerCraft [ComputerCraft] (ComputerCraft1.47.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
CCTurtle [ComputerCraft Turtles] (ComputerCraft1.47.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
MoCreatures [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v4.2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Dynmap [Dynmap] (Dynmap-1.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ExtrabiomesXL [ExtrabiomesXL] (ExtrabiomesXL-universal-3.5.0b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
IC2 [IndustrialCraft 2] (industrialcraft-2_1.109.113-lf.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
NetherOres [Nether Ores] (NetherOres_1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Core [BuildCraft] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Energy [BC Energy] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
PowerConverters [Power Converters] (PowerConverters_1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Builders [BC Builders] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Factory [BC Factory] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Railcraft [Railcraft] (Railcraft_1.4.5b-6.9.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_SmartMoving [Smart Moving] (Smart Moving Server for Minecraft Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
TheRCMod [The RC Mod] (TheRCMod v2.2 [Alpha_5].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
LoginMessage [LoginMessage] ([forge_universal][1.4.5]LoginMessage_v0.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Backpack [Backpack] (backpack-1.5.4-1.4.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Transport [BC Transport] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Silicon [BC Silicon] (buildcraft-A-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
AdvancedSolarPanel [Advanced Solar Panels] (mod_AdvancedSolarPanels_3_3_0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
PortalGun [Portal Gun] (portalgun1.4.4v0.1_universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 4910 (274960 bytes; 0 MB) allocated, 3221 (180376 bytes; 0 MB) used
Player Count: 3 / 20; [iq['Pakus'/1104260, l='world', x=-556.39, y=59.00, z=2643.74], iq['Pardal'/1072443, l='world', x=-560.06, y=59.00, z=2646.91], iq['Razorbane'/1137130, l='world', x=-553.33, y=62.38, z=2718.63]]
Is Modded: Definitely; Server brand changed to 'forge,fml'
Type: Dedicated Server (map_server.txt)

I don't know if I should give more info about anything, but if so, just ask, i have a lot of logs and crashlog saved.

Yes, we are going to need the full crash log. The part you posted I think only deals with what is installed, not what errored.

That's the full crash log. I mean the .txt generated in the crashlog folder. (It actually shows the trace of the error)

Will look into.

I'd like to check if the error has been fixed or diagnostiqued. IC2 guys just close definitely their issue report because apparently "Closed. Player has confirmed it is a threading issue with ComputerCraft monitors" (http://bt.industrial-craft.net/view.php?id=136#c445)

Thanks

Give him a bit. Cloudy is a busy guy; he's got two mods, is on an LP server, and has plenty of bugs. He's already promised to look into it; he'll say something when he has results.

Sorry about that, i didn't mean to hurry him up, just checking this wasn't forgotten :)/>