Entity Mass Spawning near chunk error
In SMP, there are certain chunks that suddenly duplicate/spawn in entities like animals. One case we had 2000 sheep split into 5 chunks (right by each other). A different case we have unknown entities that showed a count of 5000. This is causing huge amount of FPS drop. And in the worst case scenario server crashes.
I do not know how you can re-create this.
Linked Issues
testing discovered1
MCL-1291is duplicated by34
MC-5476Lag/crash. Pigs infinatly spawn and dissapear afterwards. Minecraft crashes when i log into the world with pigs but sometimes works. This is on singleplayer.DuplicateMC-9020Pigs are spawning everywhere and big black holes appear.DuplicateMC-9360way too many creepersDuplicateMC-9452Multiple Mobs spawningDuplicateMC-10728Major ProblemDuplicateMC-13582Mass wolf spawningDuplicateMC-13647Infinite Chickens SpawningDuplicateMC-14847Infinite snow golems spawnedDuplicateMC-15183Dog duplicationDuplicateMC-15546Too Many AnimalsDuplicateMC-23108Ocelots spawn in thousands inside jungle biome, crashes server.DuplicateMC-23948Ocelotmageddon Causing 1 FPS In JunglesDuplicateMC-24168logging in 200+ creepers spawnDuplicateMC-24766Ocelots spawning in huge numbersDuplicateMC-25005too much mobs!DuplicateMC-27239hundreds of pigs spawn everywhere, and wont go away even when world is reloadedDuplicateMC-28036HUGE over-spawning of ocelotsDuplicateMC-29256World does not loadDuplicateMC-31532extreme zombie spawnigDuplicateMC-33291Mob spawners went haywire?DuplicateMC-33387Bat Lag WorldDuplicateMC-37668After upgrading to 1.7.2 my world filled with thousands of enderman and is unplayable.DuplicateMC-39757Massive sheep spawning around missing chunkDuplicateMC-48024Game freezup, infinate Pig generationDuplicateMC-48110Mass mob spawning chunk bugDuplicateMC-49452Hundreds of horses appearing in my world on loginDuplicateMC-52675There is a bunch of blocks that are corrupt.DuplicateMC-53328Chicken spawning out of controlDuplicateMC-362Skeleton and Spiders spawn everywhere.DuplicateMC-2131Stepping into an unloaded chunk is SSP seems to corrupt the fileDuplicateMC-2293Sudden population explosion of mobsDuplicateMC-4310Infinite sheepDuplicateMC-4955Villagers multiplying to unreasonable numbersDuplicateMC-5304Pig spawing deserts, lanDuplicateAttachments23
Created Issue:
Entity spawning glitch
In SMP, there are certain chunks that suddenly duplicate/spawn in entities like animals. One case we had 2000 sheep split into 5 chunks (right by each other). A different case we have unknown entities that showed a count of 5000.
Attachments1
8acfff1868492845216763802453b71a.png
In SMP, there are certain chunks that suddenly duplicate/spawn in entities like animals. One case we had 2000 sheep split into 5 chunks (right by each other). A different case we have unknown entities that showed a count of 5000.
I do not know how you can re-create this.
EntityspawningglitchEntity Mass Spawning
In SMP, there are certain chunks that suddenly duplicate/spawn in entities like animals. One case we had 2000 sheep split into 5 chunks (right by each other). A different case we have unknown entities that showed a count of 5000. This is causing huge amount of FPS drop. And in the worst case scenario server crashes.
I do not know how you can re-create this.
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Entity Mass Spawning (May cause crashes in SMP)
Entity Mass Spawning (May cause crashesin SMP)
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![[Mod] Ezekiel (ezfe)](../../../data/assets/gravatar/ezekielelin.jpeg){kind=small}
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testing discovered
Entity Mass Spawning(May cause crashes)Entity Mass Spawning near chunk error
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Duplicate of MC-4061. Do you still have the world this occurred in?
Hmm... Sounds like it might be related to MC-4061.
Just happend to me on my test world in 13w05b. The corrupted chunk started to mass spawn zombies, so I can confirm MC-4061 aswell. Using MCEdit I found that this chunk was replaced by a chunk that is not too far away (there was redstone stuff, easy to recognize). Deleting the chunk and letting Minecraft rebuild it fixed the problem. I believe this, MC-2548 and MC-4061 are all related.
Related/Dupe of MC-4061.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 54% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 55% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 55% of tickets are being closed as duplicate.
That would be MC-4061. The previous crash report is fine. Don't worry about making a new one.
Although your title is very entertaining, this ticket is a duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 58% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being closed as duplicate.
Duplicate of MC-4061, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being closed as duplicate.
Yes.
Client> 2013-08-08 18:34:20 [SERVER] [SEVERE] Wrong location! ug['arrow'/273, l='Imred's experiments superflat', x=NaN, y=NaN, z=NaN] Client> java.lang.Exception: Stack trace Client> at java.lang.Thread.dumpStack(Unknown Source) Client> at adq.a(SourceFile:505) Client> at aed.a(SourceFile:283)
That world is broken, compare MC-4061.
You may simply zap it or try to repair it http://www.minecraftforum.net/topic/137381-official-corrupted-save-recovery-thread/
The bug
It looks like the world generation can spawn too many monsters at the same place.
Note: MC-4061 is marked as related since Marcono1234 had one chunk error while trying to reproduce this bug, however that time no monsters spawned.
How to reproduce
Outdated, though this issue might still occur
- Ensure your render distance is set to at least 9
- Create a default world with the following seed
8627439086671208170
- Teleport near the position
/tp 920 70 -1736
- Wait some time, maybe about 10 seconds
- Switch to Spectator mode
/gamemode spectator
- Teleport to the exact position
/tp 908 27 -1774 180 50
This no longer occurs. Some people mistake chunks loading slowly for chunk errors and "confirm" this bug is still present while it is not.
I actually haven't been able to find any of those dark chunk errors that caused MC-4061 for quite some time
Worlds created between 1.4.4 and 1.8 may have misplaced chunks due to MC-2545
Inside those chunks there can be thousands of entities due to MC-4061
Between 1.8.1 and 1.12.2 these bugged entities would be properly removed letting you load the world as normal, but since 1.13 this is no longer the case.
Upgrading these worlds will take a long time (this report previously stated forever, but this is not actually the case as it turns out) and once you load in the world will be completely unplayable due to the intense lag.
Reproduction Steps
- Put this world in your saves folder BrokenWorld.zip
- On version 1.21.1 try to enter the world or use the "optimize world" button
- Wait several minutes for the world to upgrade
Observed Result
- The internal server stops after a few seconds
- Looking at chunk -27,28 will cause your FPS to spike
After using the performance profiler I realized chunk -27,28 contains a stupendous amount of skeletons due to MC-4061. About 13 thousand.
2024-09-10_11_00_49-Adeventure World-24w36a.zip
Expected Result
- Entities in misplaced chunks would be cleared as was the case in 1.8.1 - 1.12.2
What server version ?
It's running the normal minecraft server version that you can get from Minecraft.net, if that's what you mean.
Yes, thanks.
To add to this, after further investigation, it seems to only happen with sheep. The 5000 entities are actually 5000 sheep. How this happened, is this unknown.
Aha! I knew I've seen a couple other reports like this on the tracker!
MC-362andMC-2293are both the same problem, but without enough information, so they were marked as "Cannot Reproduce" and "Incomplete". However,MC-2131is still open, and describes the same problem.I was playing a map by Hypixel, when suddenly a good several hundred bats spawned in the dark space under the map (out of bounds for gameplay purposes; this isn't something Hypixel would do on purpose). Nobody else has said it happened to them, and I have found no evidence of bat spawners in the entire map. Also, the event did not repeat when starting from a fresh copy of the map, even when repeating my actions practically the same way. The map in question is Herobrine's Mansion, but that should largely be irrelevant: I've heard on the wiki of hundreds of bats spawning this way in singleplayer.
Even if, by some unlikely chance, this bat issue is "not a bug", in the same way that squid spawn in massive packs in new chunks, it should still be addressed by putting a cap on how many can spawn at once; at first my Minecraft crashed and I had to use MCedit to determine that there were hundreds of bats in one area.
But I think it's more likely that my issues with the bats are related to everyone else's sudden excessive mob explosions. I should mention that I was playing in singleplayer when this happened, but it seems unlikely for a bug of this nature to be limited to SMP anyhow, considering SSP is a local server (SMP-specific bugs usually rely on issues between the client and the server - but the sheep in this report are actual entities, else there wouldn't be any server crashes).
This is still a problem in 1.5. My world spawned several thousand chickens and eggs and has made my world completely unplayable, even after removing the entities and deleting the chunks in MCedit. I had had some problems with the same issue in 1.4.7 but unfortunately 1.5 did not fix it.
This recently happened to me after upgrading to 1.5. The issue has appeared twice, the first time 9600 sheep we're inside a small area. The second time it was 5000+ skeletons and 1000 other passive mods.
Can the title be changed to make it clear that this bug causes crashes?
Gerrard, I changed the title for you. Is that how you wanted it to explain?
Yes, that looks good. Mojang tends to put crash bugs on higher priority (as they should), so I figure this will help.
happened to me too, i was playing in multiplayer in an hunger game server, then my fps istant dropped to 0, i think this is the problem
https://twitter.com/Dinnerbone/status/331076749150523392
Tails, the funny part of this though, is that we deleted and reloaded the chunk using MCEdit, and the problem still persisted. Wouldn't reloading the chunk help towards corrupted chunks?
Lol i just found out this bug existed, suddenly there were like 500 ocelots that had spawned inside my farm. rly weird, lost all my chickens but got enough ocelots to scare a gaint creeper away
ps. can anyone tell me how to prevent my world from crashing due to an overload of ocelots? right now i can still play, but if this continues, minecraft will probably crash.
I have same issue with ocelots. For me switching back to snapshot 13w17a fixes the problem, ocelots despawn with time, switching to 13w18abc makes them spawn in large numbers again.
Reopened
MC-15173as the ocelot mass spawning is a different issue after all.People who have this issue with something other than ocelots (since that is a separate issue) should upload a copy of their world (or a small enough subset of their world that still shows the issue). Since this is likely some kind of corruption knowing what is corrupted and how would be extremely helpful for fixing it.
I have this issue with sheep, near a chunk that won't load. I tried to set them on fire, but they are not flammable enough. Slows to a crawl when nearby.
If you're having this issue with anything other than Ocelots, a world upload would give me somewhere to start with looking into this issue. Until then, there's not much I can do as I'm unable to come up with a way to reproduce this issue on demand.
I should've uploaded the world files back when I originally posted about this back in December. As of right now, I don't have it, but I'm gonna ask some of the server folks to see if anyone still has a copy of the world.
EDIT: We have not had this issue since that time though, if we do get it in the end, I will make sure to upload a world file with the approximate coordinates of the issue.
if you make a superflat world with only air and use a third party editor to place blocks you will get mass spawns
That's different, as it's caused by the game trying to meet a "quota" of passive and hostile mobs. It's the same reason Endermen grinders in the End work so well.
This bug causes entities to continue spawning, hundreds of times higher than their quotas/caps.
I haven't seen a world upload yet, so while this is a single player world, here's mine with this bug. I think the zip works, but if not, please direct me to somewhere I can learn how to submit the world.
Thank you, Mike. That should help in some way.
Doesn't really matter if it's singleplayer, since SP is basically a "server" running anyways.
@Mike Hultquist: Your ZIP file doesn't work, the subfolders (data, region, players,...) are missing.
That's about 100 MB, so how should I send them?
Can you put the file on a third party file hoster and provide the link here ?
This has the full world folder. If you need a different one, I can try a different host.
http://d-h.st/unX
@Mike Hultquist:
After deleting several thousands of sheep with MCEdit that world was usable. Besides your "sheep farm" there is a chunk error (see my screenshot, also visible in your screenshot), probably that is the cause for the mass spawning. The (client) console got spammed with "wrong location" messages.
I reported another bug about a chunk reverting to a previous saved configuration, after making changes to the chunk, and I think that may be related to this issue, because I went into MCEdit to look at the chunk where the sheep were spamspawning, and the chunk that wouldn't load in game, did not appear as the unloaded chunk but appeared as the chunk that kept reverting to previous condition on me. The reverting chunk is a few chunks away.
I will find the other open issue
MC-4001, and also attempt to upload the roughly 90 MB in the folder of the affected world.Tails was Mod on
MC-4001. Again, I think my spamspawn issue is symptomatic of the chunk error inMC-4001.I have a world to upload, but I am unsure how to do that. The folder size for my world is about 90-100 MB.
Let me know how I can get you a copy, and I will do it. I may need to find a place to access it online.
EDIT: The location to find the folder with all world data for the affected world, is http://www.math.uiowa.edu/MathTutorialLab/oldpage/JIRA/
You will find a folder called Moose Town, that is the world name.
Happened to me in a worst case,when loading a world it freeze.I written more information in
MC-2545Still exists in the most recent 1.6.2 and launcher.
Here's my world:http://www.mediafire.com/download/j8sl6687xo4xg8s/Rauliux_Villager_Corrupted.rar
So can this be fixed by using MCEdit and finding the chunk error then deleting it?
Aaron, I believe we tried that, but with no luck. Although, it's a while ago, so I'm not really sure about that.
I have a bad chunk in the nether and sometimes when entering the dimension zombie pigman start raining inside the chunk, FPS drop to 2, all normal mobs (outside the chunk error) freeze and minecarts/buttons/etc. became unusable, after a few minutes the game crashes and, upon reloading, everything is back to normal with the empty chunk but no zombie pigman rain.
I've seen it in 1.6.2 and 1.7.2, here's a screenshot.
Is this still a concern in the latest Minecraft version 14w04b? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
I cannot confirm if this issue still persists in 14w04b. However, I have a world that seems to have the same issue in 1.7.4. I will have to upload this, which can take some time. I will keep you posted about the world download.
I have uploaded the world download here: Link removed (broken)
It's around 600 mb. I'm not entirely sure of the location where the spawn happened, but it shouldn't be more than around 500 blocks from spawn (give or take).
Same issue on 1.7.4 too, twice on the same server world
I have the same exact problem. I uploaded some of my pics about the problem for you all. Also, every time, minecraft crashes 2 min after playing. while it works, it just sits there
UPDATE: in minecraft, im stuck with 2 holes!!!!! at first, i had one but now 2!!!!! PLEASE FIX IT BEFORE MY WORLD COMPLETELY FALLS APART!!! You wouldn't believe how much work is on there!
I'm having this mass sheep spawning bug along with something like
MC-2545since I updated to 1.7.9 on my Mac running OSX Mavericks. It seems to happen regularly in a particular world, sometimes crashing the game and causing the world to be unplayable. I luckily have backups.Attaching region files separately since they are totally over 10 MB. Will upload the rest of the world from Saves after.
World name is Pumpkin Pie, or PumpkinPies in the UI.
The final 2 region files from the corrupted Pumpkin Pie world (see my comment).
Here's the rest of the save, just copy the region files I uploaded previously back to the region folder.
This world was working fine, then I noticed some lag and walked (in the game) around a hill to find a huge bunch of sheep and chickens had spawned. I quit and saved and now I can't play the world due to the lag and lack of chunks. It also takes a very long time for the world to open and the nearby chunks to appear...pressure plates don't work and it's pretty much unplayable. This has happened twice with this world (once in the original and again after I loaded a back up from a previous day).
I tried running region-fixer.py on it but it didn't help. Same result with MCEdit's region repair command.
Region-fixer reports a chunk in the wrong location, but no other problems:
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. It will be reopened as soon as the requested information has been delivered.