New chunks seemingly generated badly after transferring single player world to server

[unkempt moat]

Hello, so I have the following problem. I transferred my single player wrold to the server. Both running vanilla minecraft 1.19.4. All seem to be well, and I've been playing on it with friends for a few weeks. However, while exploring, we found what's shown in the attached picture. There seem to be clearly a bug with the generation of this chunk. What is strange is that the ocean underneath seems reasonable, as in it is not completely flat underneath. This extends for quite a bit, but is the only region I found that is like this.

While talking with support, it appears that the problem might be the generation of new chunks. I could try and look if it is an isolated incident, but I am a bit afraid of corrupting a big part of the world that way. What could be causing this ? Anyway to fix it, or at least prevent further damage ? Thanks !

If its useful, I just realised that typing /seed on the single player world does NOT give the same seed as when I do it on the server

[wintry kestrel]

@unkempt moat, you just advanced to level 1 !

[unkempt moat]

Maybe it is due to that ? Could I simply add the level-seed line in properties to fix it ?

[severe kelp]

was this a world that you have upload yourself?

such wierld generation will not curropt your world

it just...

looks wierld

[unkempt moat]

Yes I have uploaded

But I am pretty sure the chunks for this part here were not generated when I uploaded it, we stuck around the same place

I can send you the original seed (gotten from the singleplayer world)

[severe kelp]

yea that can be the cause

[severe kelp]

did you manually set a seed?

[unkempt moat]

I did not, I just copy paster the world folder

[severe kelp]

that makes ense

[severe kelp]

was the world from a different version than your server

and was there a manually set seed in server.properties

if either or those questions are yes, then this is normal, and expected

[unkempt moat]

There was (and still isn't) a set seed in server.properties

and as far as I know no, the both are version 1.19.4

[severe kelp]

hmm

intresting

[unkempt moat]

But if I write /seed in the server and the single player world, I get different things

[severe kelp]

ah

problem detected

well

thats the issue

bu

but you can't do much about it now

unless you want to reupload the original world

[unkempt moat]

Strange, it shouldn't have happened right ?

[severe kelp]

normally, no

[unkempt moat]

What about changing the seed in the server.properties now ? I am also now looking at what seed is written on the level.dat file

[severe kelp]

you can do that

but that would just creat more glitches lik that

ur best bet is to leave it as it is

any newer chunks generated outside will not have these issues

[unkempt moat]

yeah, the seed in level.dat is the one I get when typing /seed, which is different than the one I get when I type seed in the singleplayer

[severe kelp]

it is only on the border of your old chunks and your new chunks

[unkempt moat]

I see, that's still a bit annoying...

[severe kelp]

you can use a world editor to delete those chunks

and then set the seed in server.properties and try again

[unkempt moat]

I see

Also, I could just restart the world with the correct seed, and then use a world editor to edit in our constructions, right ?

[severe kelp]

or just use worldedit

it's easier

it's both a mod and a plugin

[unkempt moat]

ah okay thanks

[wintry kestrel]

@unkempt moat, you just advanced to level 2 !

[unkempt moat]

I will try that, didn't know about it

I guess I could do the following : use world edit to delete the chunks that are corrupted

(this I do locally)

Then I reset the server, reupload the world with the deleted problematic chunks

and then should be good ?

[severe kelp]

nono

worldedit is not a "world editor"

it's

a mod

that allows you to quickly fill blocks

but also allows you to save structures to files

and load them

[unkempt moat]

ah

I will investigate it

The only thing that bothers me with the use of a mod is I'm afraid it will create more problems down the line, since I want to run a server with vanilla minecraft

[severe kelp]

it's a non-destructuve mod

also your running paper right

[unkempt moat]

Nope, I'm running a minecraft.jar

[severe kelp]

worldedit is a mod, so you can isntall it onto your singleplayer to copy the strubutes and save to file, and is a plugin so it canload said files onto your server

[unkempt moat]

okay great

[severe kelp]

use paper. it's identical in function to vanilla, is 10x faster, and fixes various bugs

[unkempt moat]

Alright I will try to migrate

[severe kelp]

and allows you to use plugins

[severe kelp]

it' sjust a drop in replacement

just replace the jar in the jar selector menu

[unkempt moat]

I initially went with vanilla because it was my first time, and also tbh compute capabilities were not a concern because I plan to move on my own server at home

At first I thought that the optimization of paper would make the world work differently (i.e. simulate less chunks at a time, etc)

[severe kelp]

yea i see

[unkempt moat]

But I guess you can configure that

I will try the world edit fix, then proceed to more advanced stuff if its not enough !

thanks for the help though

[severe kelp]

Ur welcome

[severe kelp]

It kind of does… but nothing visually different or gameplay wise

[unkempt moat]

but say I have a powerful computer (meaning 23 gB of RAM, and I will have max 6 players at a time) and I want to simulate like 20 chunks away, I can configure that on paper ?