ConcurrentModificationException when loading into world
Direcub opened this issue · 12 comments
Whenever i load my world my fps stutters heavily and eventually the game freezes
When the game locks it never starts back up again,
Using custom modpack i made in twitch client, in Singleplayer
log: https://pastebin.com/X0kNfjdK
- Minecraft Version: 1.12.2
- AE2 Version: rv6-stable-3
- Forge Version: 14.23.5.2770
Sponge PhaseTracker
can you possibly test without sponge?
other than that, this MAY be an power issue, try to add some dense enrgy cells to your network, it is possible that your system has too low capacity and stall during startup in an infinite loop ... and maybe sponge with some tick shenanigangs grinds it to a halt
Encountering this too.
I have been trying for some days now on a reproduction method but cannot find the cause as of yet.
Description: Exception in server tick loop
java.util.ConcurrentModificationException
at java.util.LinkedHashMap$LinkedHashIterator.remove(Unknown Source)
at appeng.me.cache.EnergyGridCache.extractProviderPower(EnergyGridCache.java:316)
at appeng.me.cache.EnergyGridCache.extractAEPower(EnergyGridCache.java:248)
at appeng.me.cache.EnergyGridCache.onUpdateTick(EnergyGridCache.java:199)
at appeng.me.GridCacheWrapper.onUpdateTick(GridCacheWrapper.java:43)
at appeng.me.Grid.update(Grid.java:280)
at appeng.hooks.TickHandler.onTick(TickHandler.java:228)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_1573_TickHandler_onTick_TickEvent.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:677)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:634)
at net.minecraftforge.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:266)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:712)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Unknown Source)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Server thread
Stacktrace:
at java.util.LinkedHashMap$LinkedHashIterator.remove(Unknown Source)
at appeng.me.cache.EnergyGridCache.extractProviderPower(EnergyGridCache.java:316)
at appeng.me.cache.EnergyGridCache.extractAEPower(EnergyGridCache.java:248)
at appeng.me.cache.EnergyGridCache.onUpdateTick(EnergyGridCache.java:199)
at appeng.me.GridCacheWrapper.onUpdateTick(GridCacheWrapper.java:43)
at appeng.me.Grid.update(Grid.java:280)
at appeng.hooks.TickHandler.onTick(TickHandler.java:228)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_1573_TickHandler_onTick_TickEvent.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:677)
-- Sponge PhaseTracker --
Details:
Phase Stack: [Empty stack]
Stacktrace:
at net.minecraft.server.MinecraftServer.handler$onCrashReport$zjk000(MinecraftServer.java:3980)
at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:558)
at java.lang.Thread.run(Unknown Source)
OP wasn't using Sponge.
Sponge has nothing to do with this error. @yueh Can this please be reopened
Was i referring to op? I quoted your log and the advice was meant in general, how about being constructive and check for what i wrote?
Original poster.
If you check his crash report, he's not using Sponge. It's just a bias towards Sponge and if someone is gonna to push bias in-front of me I'm going to correct to you. Instead you have to make up by editing my posts, nice.
Stop it.
This is more than likely another mod hooking into AE2 doing unsafe things cross thread. Identifying the mod doing this would be the goal.
So in that case perhaps help us out a little. You did not post your whole log so we can not see what mods you have so we cannot look for mods you may have in common with the OP.
Asking to try it without sponge is perfectly fine. It could easily be caused by some changes to chunkloading or similar system, which sponge likes to do and some other mod might simply include similar changes because they claimed it should be 5% faster but crashes in return.
It would simply remove some variables and could make it easier. Or at least rule it out as possible cause.
But it appears you are not actually interested in identifying a potential cause as well as reject a simple and quick request. So I do not see any chance to get something useful out of it from discussing it any further.
Does this happen always? If so can you try and reduce the amount of mods to a mininum amount possible, or alternative remove just one or 2 until it no longer appears?
On the first glance it looks like something tries to use multithreaded worldloading, which is just wrong and we are just the first mod affected by it and crash therefore.
@Direcub what was your findings, having same problem in my quite random private SP pack