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  1. Minecraft: Java Edition
  2. MC-150053

Game Crash during World Generation - ConcurrentModificationExeption

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Duplicate
    • Affects Version/s: Minecraft 1.14
    • Fix Version/s: None
    • Labels:
      None
    • Environment:
      Operating System - Windows 10 64 bit

      Java Version - Oracle 1.8.0_51

       

      Operating System - CentOS 7 64 bit

      Java Version - OpenJDK 1.8.0_212-b04
    • Confirmation Status:
      Unconfirmed
    • Category:
      (Unassigned)

      Description

      Please close this issue.  It is a duplicate of https://bugs.mojang.com/browse/MC-148830

       

      Game randomly crashes when generating chunks.  This issue seems to affect both the Integrated Vanilla Game Server and Bukkit, so it should be addressed.

      Possibly connected to MC-132248

       -- 

      Windows Crash:

      ---- Minecraft Crash Report ----
      // Daisy, daisy...Time: 4/27/19 2:10 PM
      Description: Exception ticking worldjava.util.ConcurrentModificationException
      	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
      	at java.util.ArrayList$Itr.next(ArrayList.java:851)
      	at bhu.a(SourceFile:72)
      	at vg.a(SourceFile:317)
      	at net.minecraft.server.MinecraftServer.b(SourceFile:827)
      	at net.minecraft.server.MinecraftServer.a(SourceFile:764)
      	at dxh.a(SourceFile:128)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:632)
      	at java.lang.Thread.run(Thread.java:745)
      A detailed walkthrough of the error, its code path and all known details is as follows:
      ----------------------------------------------------------------------------------------- Head --
      Thread: Server thread
      Stacktrace:
      	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
      	at java.util.ArrayList$Itr.next(ArrayList.java:851)
      	at bhu.a(SourceFile:72)
      	at vg.a(SourceFile:317)-- Affected level --
      Details:
      	Level name: Pregenerate
      	All players: 1 total; [vh['DefineOutside'/271, l='Pregenerate', x=851.50, y=254.00, z=-208.50]]
      	Chunk stats: ServerChunkCache: 4716
      	Level seed: 6221344619707477178
      	Level generator: ID 00 - default, ver 1. Features enabled: true
      	Level generator options: {}
      	Level spawn location: World: (80,63,-208), Chunk: (at 0,3,0 in 5,-13; contains blocks 80,0,-208 to 95,255,-193), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
      	Level time: 13793 game time, 13793 day time
      	Level dimension: 0
      	Level storage version: 0x04ABD - Anvil
      	Level weather: Rain time: 32382 (now: false), thunder time: 152175 (now: false)
      	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
      Stacktrace:
      	at net.minecraft.server.MinecraftServer.b(SourceFile:827)
      	at net.minecraft.server.MinecraftServer.a(SourceFile:764)
      	at dxh.a(SourceFile:128)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:632)
      	at java.lang.Thread.run(Thread.java:745)-- System Details --
      Details:
      	Minecraft Version: 1.14
      	Operating System: Windows 10 (amd64) version 10.0
      	Java Version: 1.8.0_51, Oracle Corporation
      	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
      	Memory: 969421744 bytes (924 MB) / 1979711488 bytes (1888 MB) up to 2147483648 bytes (2048 MB)
      	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
      	Player Count: 1 / 8; [vh['DefineOutside'/271, l='Pregenerate', x=851.50, y=254.00, z=-208.50]]
      	Data Packs: vanilla
      	Type: Integrated Server (map_client.txt)
      	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.
      

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              • Assignee:
                Unassigned
                Reporter:
                DefineOutside Hunter M
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                Dates

                • Created:
                  Updated:
                  Resolved:

                  Potential Duplicates