java exception thrown: java.util.concurrentmodificationexception

VERSION:
1.73
DESCRIPTION:
Script is randomly crashing.
EXPECTED RESULT:
I expect it to run :P/> with out errors.
REPRODUCTION STEPS:
I currently have 16 Advanced Computers running, WiRe - Redstone Master Control for your base, randomly sometimes on startup sometimes a hours later, I will receive java exception thrown: java.util.concurrentmodificationexception. At first I had them all running from a central disk drive, and pulling the startup off of the disk, and the config for each machine is held on the computer. For troubleshooting I moved the startup and config to its own computer for each script.. and the problem still exists. I had been working with DOG the Author of the script to rule out script errors first. He mentioned at this point I should post on here as a bug. No crash logs are created, no logs in the console its ONLY on the computercraft terminal screen.

SCREENSHOT/VIDEO:
http://minecraft.breeoge.com/images/error.jpg

For quick reference, the script, and the discussion with Dog.

Thanks Bomb Bloke for posting that.. I should have included it in my original post

Please post your Minecraft log which you can find in the Minecraft directory, it should have the exception stated in there.

Can somebody come up with a simple script to reproduce this? Or at the very least, find out which API function the error is being emitted from.

When it happens again i will post the client log, I havent been playing much due to RL events.. sorry for the absence.

I couldn't find anything in the server logs the concurrent modification exception. On Skyfactory 2, MC 1.7, I get concurrent modification exception on line 67 of this script after 3-5 mines of running.

script: http://pastebin.com/BLf7VVDv

The computer is hooked up to 4 BigReactor turbines using networking cable, and another computer using a wireless modem. The other computer has no issues.

dan200, on 31 March 2015 - 10:48 AM said:

Can somebody come up with a simple script to reproduce this? Or at the very least, find out which API function the error is being emitted from.

I've had this come up before as well while dev'ing and playing. Basically it's anything that accesses or adds to the list of computers maintained by CC. You need to make the computer lists thread-safe.