I was running a vanilla minecraft server on my raspberry pi and one of my friends played with the tick speed, and now anytime anyone tries to interact with the world (building, changing gamemode, etc.), they are disconnected and then the server crashes. I have tried changing the tick speed back to 20 and the crash still persists. Note: interacting with the world does not include flying around/moving. Could anyone with more expertise take a look at a log file and try to help me out? Thanks a lot!
---- Minecraft Crash Report ----
// I just don't know what went wrong
Time: 30/01/17 23:53
Description: Exception ticking world
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.a(PlayerChunkMap.java:71)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.computeNext(PlayerChunkMap.java:98)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at net.minecraft.server.v1_11_R1.WorldServer.j(WorldServer.java:416)
at net.minecraft.server.v1_11_R1.WorldServer.doTick(WorldServer.java:255)
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:790)
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399)
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675)
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574)
at java.lang.Thread.run(Thread.java:745)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Server thread
Stacktrace:
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.a(PlayerChunkMap.java:71)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.computeNext(PlayerChunkMap.java:98)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at net.minecraft.server.v1_11_R1.WorldServer.j(WorldServer.java:416)
at net.minecraft.server.v1_11_R1.WorldServer.doTick(WorldServer.java:255)
-- Affected level --
Details:
Level name: world
All players: 0 total; []
Chunk stats: ServerChunkCache: 266 Drop: 10
Level seed: 1342048327214334340
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (161,64,182), Chunk: (at 1,4,6 in 10,11; contains blocks 160,0,176 to 175,255,191), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 30041339 game time, 90841 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 2761 (now: true), thunder time: 6166 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:790)
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399)
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675)
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574)
at java.lang.Thread.run(Thread.java:745)
If I create a new world, I will lose all of the things that me and my friends have built. I have tried creating a new server, but the problem seems to be within the world and not the server.
I was running a vanilla minecraft server on my raspberry pi and one of my friends played with the tick speed, and now anytime anyone tries to interact with the world (building, changing gamemode, etc.), they are disconnected and then the server crashes. I have tried changing the tick speed back to 20 and the crash still persists. Note: interacting with the world does not include flying around/moving. Could anyone with more expertise take a look at a log file and try to help me out? Thanks a lot!
---- Minecraft Crash Report ----
// I just don't know what went wrong
Time: 30/01/17 23:53
Description: Exception ticking world
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.a(PlayerChunkMap.java:71)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.computeNext(PlayerChunkMap.java:98)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at net.minecraft.server.v1_11_R1.WorldServer.j(WorldServer.java:416)
at net.minecraft.server.v1_11_R1.WorldServer.doTick(WorldServer.java:255)
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:790)
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399)
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675)
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574)
at java.lang.Thread.run(Thread.java:745)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Server thread
Stacktrace:
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.a(PlayerChunkMap.java:71)
at net.minecraft.server.v1_11_R1.PlayerChunkMap$3.computeNext(PlayerChunkMap.java:98)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at net.minecraft.server.v1_11_R1.WorldServer.j(WorldServer.java:416)
at net.minecraft.server.v1_11_R1.WorldServer.doTick(WorldServer.java:255)
-- Affected level --
Details:
Level name: world
All players: 0 total; []
Chunk stats: ServerChunkCache: 266 Drop: 10
Level seed: 1342048327214334340
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (161,64,182), Chunk: (at 1,4,6 in 10,11; contains blocks 160,0,176 to 175,255,191), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 30041339 game time, 90841 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 2761 (now: true), thunder time: 6166 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:790)
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399)
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675)
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574)
at java.lang.Thread.run(Thread.java:745)
-- System Details --
Details:
Minecraft Version: 1.11.2
Operating System: Linux (arm) version 4.4.38-v7+
Java Version: 1.8.0_65, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 362371928 bytes (345 MB) / 519176192 bytes (495 MB) up to 1021837312 bytes (974 MB)
JVM Flags: 2 total; -Xms512M -Xmx1008M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
CraftBukkit Information:
Running: CraftBukkit version git-Spigot-b32c8f8-4d3bf20 (MC: 1.11.2) (Implementing API version 1.11.2-R0.1-SNAPSHOT) true
Plugins: {}
Warnings: DEFAULT
Reload Count: 0
Threads: { TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_11_R1.FileIOThread.c(SourceFile:51), net.minecraft.server.v1_11_R1.FileIOThread.run(SourceFile:30), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING Spigot Metrics Thread: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Timer.java:552), java.util.TimerThread.run(Timer.java:505)], RUNNABLE Netty Server IO #0: [sun.nio.ch.EPollArrayWrapper.epollWait(Native Method), sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269), sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79), sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86), sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116), java.lang.Thread.run(Thread.java:745)], WAITING NonBlockingInputStreamThread: [java.lang.Object.wait(Native Method), org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.run(NonBlockingInputStream.java:278), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING Server Infinisleeper: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_11_R1.DedicatedServer$1.run(DedicatedServer.java:59)], RUNNABLE Signal Dispatcher: [], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164), java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)], RUNNABLE Netty Server IO #1: [sun.nio.ch.EPollArrayWrapper.epollWait(Native Method), sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269), sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79), sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86), sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Timer.java:552), java.util.TimerThread.run(Timer.java:505)], RUNNABLE Netty Server IO #2: [sun.nio.ch.EPollArrayWrapper.epollWait(Native Method), sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269), sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79), sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86), sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116), java.lang.Thread.run(Thread.java:745)], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Thread.java:1603), org.bukkit.craftbukkit.v1_11_R1.CraftCrashReport.call(CraftCrashReport.java:30), net.minecraft.server.v1_11_R1.CrashReportSystemDetails.a(SourceFile:78), net.minecraft.server.v1_11_R1.CrashReport.h(CrashReport.java:126), net.minecraft.server.v1_11_R1.CrashReport.<init>(CrashReport.java:33), net.minecraft.server.v1_11_R1.CrashReport.a(CrashReport.java:320), net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:795), net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399), net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675), net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574), java.lang.Thread.run(Thread.java:745)], RUNNABLE DestroyJavaVM: [], RUNNABLE Netty Server IO #3: [sun.nio.ch.EPollArrayWrapper.epollWait(Native Method), sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269), sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79), sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86), sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116), java.lang.Thread.run(Thread.java:745)], WAITING Thread-5: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(LockSupport.java:175), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039), java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442), com.mojang.util.QueueLogAppender.getNextLogEvent(QueueLogAppender.java:77), org.bukkit.craftbukkit.v1_11_R1.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:27), java.lang.Thread.run(Thread.java:745)], WAITING Chunk I/O Executor Thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(LockSupport.java:175), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039), java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617), java.lang.Thread.run(Thread.java:745)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:502), java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)], TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_11_R1.MinecraftServer.stop(MinecraftServer.java:473), org.spigotmc.RestartCommand.restart(RestartCommand.java:121), org.spigotmc.RestartCommand.restart(RestartCommand.java:40), org.spigotmc.WatchdogThread.run(WatchdogThread.java:85)], TIMED_WAITING process reaper: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617), java.lang.Thread.run(Thread.java:745)], RUNNABLE Server console handler: [java.io.FileInputStream.readBytes(Native Method), java.io.FileInputStream.read(FileInputStream.java:255), java.io.BufferedInputStream.fill(BufferedInputStream.java:246), java.io.BufferedInputStream.read(BufferedInputStream.java:265), org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:169), org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:137), org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:246), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:261), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:198), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2145), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:2349), net.minecraft.server.v1_11_R1.DedicatedServer$2.run(DedicatedServer.java:84)],}
Recent tasks from 534-564{}
Profiler Position: N/A (disabled)
Player Count: 0 / 7; []
Is Modded: Definitely; Server brand changed to 'Spigot'
Type: Dedicated Server (map_server.txt)
Try creating a new world
Moderator for the official Minecraft Discord servers (Minecraft, Dungeons, Legends, Live, Feedback)
Moderator for MoJIRA (Minecraft official bug tracker)
If I create a new world, I will lose all of the things that me and my friends have built. I have tried creating a new server, but the problem seems to be within the world and not the server.
you might have to.
Moderator for the official Minecraft Discord servers (Minecraft, Dungeons, Legends, Live, Feedback)
Moderator for MoJIRA (Minecraft official bug tracker)
Are schematics the actual blocks inside the world or the whole world?
the whole world
Moderator for the official Minecraft Discord servers (Minecraft, Dungeons, Legends, Live, Feedback)
Moderator for MoJIRA (Minecraft official bug tracker)
How are schematics different from the world file?
i'm not sure. i didn't know there were world files.
Moderator for the official Minecraft Discord servers (Minecraft, Dungeons, Legends, Live, Feedback)
Moderator for MoJIRA (Minecraft official bug tracker)