"Please report this error: [See console] java.lang.OutOfMemoryError: Java heap space"

Question

"Please report this error: [See console] java.lang.OutOfMemoryError: Java heap space"

mk-pmb opened this issue 2 years ago · 5 comments

mk-pmb commented 2 years ago

WorldEdit Version

Fabric-Official(7.2.15-SNAPSHOT+6460-c518821)

Platform Version

Fabric Loader v0.14.21, Fabric API 0.83.1+1.20.1

Confirmations

I am using the most recent Minecraft release.
I am using a version of WorldEdit compatible with my Minecraft version.
I am using the latest or recommended version of my platform software.
I am NOT using a hybrid server, e.g. a server that combines Bukkit and Forge. Examples include Arclight, Mohist, and Cardboard.
I am NOT using a fork of WorldEdit, such as FastAsyncWorldEdit (FAWE) or AsyncWorldEdit (AWE)

Bug Description

I was trying to delete (//set air) a huge selection. After a long time, WE said in chat I shall report this error. After that, Minecraft was very sluggish, so I had to kill and restart it.

I assume this is about determining how much heap space is available and dividing the area to be worked on accordingly.

(Click to see log messages)

[00:43:26] [Render thread/INFO]: [CHAT] Global mask disabled.
[00:43:27] [Render thread/INFO]: [CHAT] Type: cuboid
[00:43:27] [Render thread/INFO]: [CHAT] Position 1: (-640, 139, -640)
[00:43:27] [Render thread/INFO]: [CHAT] Position 2: (639, 181, 639)
[00:43:27] [Render thread/INFO]: [CHAT] Size: (1280, 43, 1280)
[00:43:27] [Render thread/INFO]: [CHAT] Cuboid distance: 1809.2667022857631
[00:43:27] [Render thread/INFO]: [CHAT] # of blocks: 70451200
[00:45:53] [Server thread/ERROR]: An unexpected error while handling a WorldEdit command
java.lang.OutOfMemoryError: Java heap space
	at it.unimi.dsi.fastutil.longs.LongArrays.forceCapacity(LongArrays.java:126) ~[fastutil-8.5.9.jar:?]
	at it.unimi.dsi.fastutil.longs.LongArrayList.grow(LongArrayList.java:317) ~[fastutil-8.5.9.jar:?]
	at it.unimi.dsi.fastutil.longs.LongArrayList.add(LongArrayList.java:333) ~[fastutil-8.5.9.jar:?]
	at com.sk89q.worldedit.util.collection.LongPositionList.add(LongPositionList.java:43) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.util.collection.LocatedBlockList.add(LocatedBlockList.java:61) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.history.changeset.BlockOptimizedHistory.add(BlockOptimizedHistory.java:61) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.ChangeSetExtent.setBlock(ChangeSetExtent.java:65) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.setBlock(AbstractDelegateExtent.java:78) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.MaskingExtent.setBlock(MaskingExtent.java:69) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.setBlock(AbstractDelegateExtent.java:78) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.validation.BlockChangeLimiter.setBlock(BlockChangeLimiter.java:87) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.setBlock(AbstractDelegateExtent.java:78) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extent.validation.DataValidatorExtent.setBlock(DataValidatorExtent.java:64) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.EditSession.setBlock(EditSession.java:737) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.EditSession.setBlock(EditSession.java:780) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.function.block.BlockReplace.apply(BlockReplace.java:53) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.function.visitor.RegionVisitor.resume(RegionVisitor.java:60) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.function.operation.Operations.completeBlindly(Operations.java:74) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.command.RegionCommands.set(RegionCommands.java:106) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.command.RegionCommandsRegistration.cmd$_set(RegionCommandsRegistration.java:408) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.command.RegionCommandsRegistration$$Lambda$4247/0x0000000801ae4000.run(Unknown Source) ~[?:?]
	at org.enginehub.piston.CommandManager.execute(CommandManager.java:157) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.extension.platform.PlatformCommandManager.handleCommand(PlatformCommandManager.java:497) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at java.lang.invoke.LambdaForm$DMH/0x000000080108b000.invokeSpecial(LambdaForm$DMH) ~[?:?]
	at java.lang.invoke.LambdaForm$MH/0x0000000801a90000.invoke(LambdaForm$MH) ~[?:?]
	at java.lang.invoke.LambdaForm$MH/0x0000000801288000.invokeExact_MT(LambdaForm$MH) ~[?:?]
	at com.sk89q.worldedit.util.eventbus.MethodHandleEventHandler.dispatch(MethodHandleEventHandler.java:51) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.util.eventbus.EventHandler.handleEvent(EventHandler.java:73) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.util.eventbus.EventBus.dispatch(EventBus.java:193) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.util.eventbus.EventBus.post(EventBus.java:181) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.fabric.CommandWrapper.lambda$register$0(CommandWrapper.java:62) ~[worldedit-fabric-mc1.20-7.2.15-SNAPSHOT-dist.jar:?]
	at com.sk89q.worldedit.fabric.CommandWrapper$$Lambda$7617/0x0000000801f4c720.run(Unknown Source) ~[?:?]
[00:45:53] [Render thread/INFO]: [CHAT] Please report this error: [See console]
[00:45:53] [Render thread/INFO]: [CHAT] java.lang.OutOfMemoryError: Java heap space

Expected Behavior

WorldEdit reports how many blocks have been set to air.

Reproduction Steps

Go to the nether, set game mode to creative, fly in midair.
/tp @s -330 150 -330 facing 319 140 319
//pos1 -320,139,-320
//pos2 319,181,319
//gmask
//# confirm_we_done=set air

Anything Else?

"Please report this error:" should maybe be clarified with "(unless already reported)".

mk-pmb · Answer 1 · 2023-06-21T23:03:40.000Z

In that case, obviously the bug is the wrong message "Please report this error:". It should instead say "You need to allocate more RAM to work on this huge selection."

me4502 · Answer 2 · 2023-06-21T23:01:08.000Z

This isn’t a bug, allocate more RAM if you want to do giant edits

mk-pmb · Answer 3 · 2023-06-21T23:24:04.000Z

There may also be some kind of memory management problem because the sluggishness continues even when I manage to quit the world and start it anew without restarting Minecraft entirely.

me4502 · Answer 4 · 2023-06-21T23:38:05.000Z

That’s how Java works, it won’t entirely recover from running out of memory

mk-pmb · Answer 5 · 2023-06-21T23:55:42.000Z

Thanks, that's good to know. I wasn't clear enough: In the case where I didn't have to restart Minecraft entirely, I used a smaller selection, so //set finished with success. In that entire session of the Minecraft client running, there was no out-of-memory error. Nonetheless, after the successful //set, Minecraft was suspiciously slow, so I left the world in hopes that this would clean up everything. I joined the world again and it was still slow.

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