Bricks corrupting chunks/crashing server
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using latest Hey0 mod (jan/5/11) // minecart mania 2.3b // Minecraft Beta
This is EXACTLY the same as:
Server Killer Bug - ID: 3146357
I see it is closed with no solution???
i can create a small sacrificial test world tonight and verify, if it helps. Sounds like what we ran into in bug 3146357. In that instance, user was in a cart waiting at a sign, got hit by another cart, causing death and internal server error. When he got back to the cart area, the world died due to chunk error.
i saw a comment about something that indicates you MIGHT be able to recover the world with a map editor and remove the brick (or chunk), but not sure.
Yeah, we are doing the same to recover the world....
the trick is avoiding the collision in the first place? or allow a collision on a brick that is waiting for user input, death or collision there results in crashing! that seems to be the source of the error.
I think i can reproduce it.. testing further now..
i tried causing collisions at a sign block and couldn't crash it.. i then left a cart waiting at a sign, and destroyed the brick, track, and cart in that area. i then rebuilt the track/brick as before, placed a cart and jumped in. as soon as i hit the brick, i got internal server error, with the following console error.
2011-01-05 20:26:48 [WARNING] Failed to handle packet: java.lang.ArrayIndexOutOf
BoundsException: 15
java.lang.ArrayIndexOutOfBoundsException: 15
at kq.g(kq.java:469)
at kq.b_(kq.java:219)
at ff.a(SourceFile:1072)
at fm.b(SourceFile:42)
at kk.a(kk.java:130)
at hy.a(SourceFile:126)
at bs.a(SourceFile:232)
at kk.a(kk.java:61)
at eh.a(eh.java:71)
at net.minecraft.server.MinecraftServer.h(SourceFile:275)
at net.minecraft.server.MinecraftServer.run(SourceFile:216)
at cj.run(SourceFile:490)
got this on client on reconnect:
java.lang.ArrayIndexOutOfBoundsException: 15
at qs.h(SourceFile:510)
at qs.e_(SourceFile:248)
at dd.a(SourceFile:1072)
at dd.e(SourceFile:1048)
at dd.e(SourceFile:1027)
at net.minecraft.client.Minecraft.i(SourceFile:1200)
at net.minecraft.client.Minecraft.run(SourceFile:677)
at java.lang.Thread.run(Unknown Source)
well.. i couldn't reproduce it that way... there is definitely a bug here, and it's a pretty severe one.. if anyone can figure out a reliable way to reproduce it, i'm sure it will help with fixing the bug.
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I found this bug on my server yesterday.
I had just installed 2.4 beta (to fix an elevator not working issue)
I have a chest 2 blocks from a station brick.
The brick has a sign diagonal to it that reads "empty : N"
I added a button next to the chest to produce a cart and when I jumped into the cart, I punched it to move it to the station.
Then I entered an invalid station direction and exited the cart and tried to move it back towards the chest. At that point I got a client error and from then on experienced the Out of Bounds exception 15.
I found a program called Chunky that let me delete the chunk with the brick and that restored that area on the server. (I have auto backups running now :))
Never saw this issue on 2.3b and I have been playing with stations a bunch.
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hi, as I wrote in my bug report, use mcedit to delete the defective chunks, then the server works again.
I did it because even i make backups every day in that case there were too much new objectes.