Closed 1.4.1: 1.4.1 to [1.5.1] Worlds Leaking

[Rednpd]

Version:
1.4.1

What is the bug:
Updating to 1.5.1 is causing the server to restart every 5 minutes. No crash log but looking at the FML Logs I can see that a variety of world leaking messages before the server restarts. No errors in the server console.

I tried looking for a fix for it so we can update our server but I find conflicting info and posts that are well outdated and may or may not still be an issue.

Mod & Version:


Paste.feed-the-beast.com log:
http://paste.feed-the-beast.com/view/fa0e0c60

Can it be repeated:


Known Fix:

 

[lenscas]

can you give the full log?
also java version and amount of ram given to the server may help.

 

[Rednpd]

The full raw FML Log is pretty big so just threw it up on https://www.dropbox.com/s/h9413ii8bb2etzq/fml-server-1.log?dl=0

The server is running Java 7 u72 I believe and is running on 4 GB Ram w/ 256 PermGen.

 

[Rtd]

From what I've understood, world leaks are the way Minecraft handle dimensions. Forge can't do anything about it.
When you leave a dimension, the dimension is unloaded by Minecraft, and seen as a world leak. (The dimension is temporarily "lost" if you prefer)
Forge just report this. And if I'm not mistaken, they is no reason to worry about it.
A simple workaround to this is to place a Chunkloader (or Spotloader) in each dimension.
Doing so, you're forcing the server to not unload the dimension, and therefore to not report the unloaded dimensions as world leaks.
Your server crash seems to be caused by something else...

PS: Forgive me for my poor English ^.^
(And don't hesitate to correct me if I'm wrong!)

 

[Rednpd]

Hmmm interesting. I'll have to out what it could be. Already tried setting loaders in each direction and based on what I can see in the logs I'm not really sure where to start. Guess I'll try booting without obvious dimension mods (Mystcraft,rftoools etc) and see how that goes.

 

[Rtd]

The world leaks are not an error.
It's an anoying message from FML, but nothing else.

From your raw log, you can see a pattern in the FML world "leaks" reports :
[06:01:26] [Server thread/DEBUG] [FML/]: Gathering id map for writing to world save world
[06:01:31] [Server thread/DEBUG] [FML/]: The world 40cef6d1 (world) may have leaked: first encounter (5 occurences).
[06:01:31] [Server thread/DEBUG] [FML/]: The world 53fcd3d6 (world) may have leaked: first encounter (5 occurences).
[06:01:31] [Server thread/DEBUG] [FML/]: The world 36573f5a (world) may have leaked: first encounter (5 occurences).
[06:01:31] [Server thread/DEBUG] [FML/]: The world 12f58bbf (world) may have leaked: first encounter (5 occurences).
[06:02:11] [Server thread/DEBUG] [FML/]: Gathering id map for writing to world save world
[06:02:21] [Server thread/DEBUG] [FML/]: The world 40cef6d1 (world) may have leaked: seen 10 times.
[06:02:21] [Server thread/DEBUG] [FML/]: The world 53fcd3d6 (world) may have leaked: seen 10 times.
[06:02:21] [Server thread/DEBUG] [FML/]: The world 36573f5a (world) may have leaked: seen 10 times.
[06:02:21] [Server thread/DEBUG] [FML/]: The world 12f58bbf (world) may have leaked: seen 10 times.
[06:02:56] [Server thread/DEBUG] [FML/]: Gathering id map for writing to world save world
[06:03:11] [Server thread/DEBUG] [FML/]: The world 40cef6d1 (world) may have leaked: seen 15 times.
[06:03:11] [Server thread/DEBUG] [FML/]: The world 53fcd3d6 (world) may have leaked: seen 15 times.
[06:03:11] [Server thread/DEBUG] [FML/]: The world 36573f5a (world) may have leaked: seen 15 times.
[06:03:11] [Server thread/DEBUG] [FML/]: The world 12f58bbf (world) may have leaked: seen 15 times.
[06:03:41] [Server thread/DEBUG] [FML/]: Gathering id map for writing to world save world


And a little sooner in your log :
[06:00:49] [Server thread/INFO] [FML/]: Unloading dimension -38
[06:00:49] [Server thread/INFO] [FML/]: Unloading dimension -39
[06:00:49] [Server thread/INFO] [FML/]: Unloading dimension -42
[06:00:49] [Server thread/INFO] [FML/]: Unloading dimension 1

You have now your dimensions "leaking".
Dim1 is The End, and for the others you'll have to check in your mods configs to know which dimension refers to -38, -39 and -42.

Hoping that help

PS: For the crash, we can't do anything without a crash log.

 

[Rednpd]

That's the things the server doesn't crash it just restarts w/o making a crash report

I'll try do a big troubleshoot when I get home from work

Thanks for helping btw =)

 

[Rtd]

Np

What are your jvm arguments?
Is enough (or too much) ram allocated to your server?

 

[Rednpd]

Update:

Appears to be an issue with Multicraft and not the pack itself.

Can be closed.