While loading chunks in a straight line out from 0,0 at a relatively fast pace, server crashes with "Exception ticking world". Crash frequency appears to be directly related to the rate at which world loading occurs.
Time: 4/20/19 1:11 PM
Description: Exception ticking world
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
at java.util.ArrayList$Itr.next(ArrayList.java:859)
at bhu.a(SourceFile:72)
at vg.a(SourceFile:317)
at net.minecraft.server.MinecraftServer.b(SourceFile:827)
at ug.b(SourceFile:343)
at net.minecraft.server.MinecraftServer.a(SourceFile:764)
at net.minecraft.server.MinecraftServer.run(SourceFile:632)
at java.lang.Thread.run(Thread.java:748)Related issues
duplicates
Comments
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spreadplayers also crashes the server with the same exception.
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Can also confirm this is an issue when using the spigot API to pre-generate the world. However, this issue is not related to Spigot. This seems to happen when the server gets behind and tries to catch up.
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Confirming for 1.14 Multiplayer server
Minecraft Crash Report ----
// Sorry 😞
Time: 4/24/19 9:55 AM
Description: Exception ticking world
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
at java.util.ArrayList$Itr.next(ArrayList.java:859)
at bhu.a(SourceFile:72)
at vg.a(SourceFile:317)
at net.minecraft.server.MinecraftServer.b(SourceFile:827)
at ug.b(SourceFile:343)
at net.minecraft.server.MinecraftServer.a(SourceFile:764)
at net.minecraft.server.MinecraftServer.run(SourceFile:632)
at java.lang.Thread.run(Thread.java:748)
A detailed walkthrough of the error, its code path and all known details is as follows:
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Happens in 1.14 Full Release when either server is under some load or lots of players online.