World Generation -Writing into PalettedContainer from multiple threads

No Matter, which World Generation i use, (even on Flatland w/o Structures) always gettin'

up to 10 error messages like below.

Walkaround: After error appears, close all and start again.

Time: 21.09.18 12:26
Description: Writing into PalettedContainer from multiple threads

java.lang.IllegalStateException
 at bnp.b(SourceFile:43)
 at bnp.a(SourceFile:110)
 at bnj.a(SourceFile:68)
 at bnq.a(SourceFile:168)
 at ti.a(SourceFile:217)
 at bsd.a(SourceFile:133)
 at bsd.a(SourceFile:42)
 at bsd.a(SourceFile:14)
 at bvw.a(SourceFile:21)
 at bvw.a(SourceFile:14)
 at bpm.a(SourceFile:27)
 at ayt.a(SourceFile:504)
 at boo.a(SourceFile:183)
 at tr.a(SourceFile:12)
 at tq.a(SourceFile:35)
 at bnc.a(SourceFile:95)
 at tx.a(SourceFile:79)
 at tx.a(SourceFile:25)
 at acu$a.a(SourceFile:147)
 at acu$a$$Lambda$1638/3245920.apply(Unknown Source)
 at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
 at bnp.b(SourceFile:43)

-- Thread dumps --
Details:
 Thread dumps: WorldGen-Scheduler-1: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
 at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
 at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 at java.lang.Thread.run(Thread.java:745)
WorldGen-Worker-11: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-5: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-6: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-12: 
 at java.util.BitSet.set(BitSet.java:451)
 at bsd.a(SourceFile:129)
 at bsd.a(SourceFile:42)
 at bsd.a(SourceFile:14)
 at bvw.a(SourceFile:21)
 at bvw.a(SourceFile:14)
 at bpm.a(SourceFile:27)
 at ayt.a(SourceFile:504)
 at boo.a(SourceFile:183)
 at tr.a(SourceFile:12)
 at tq.a(SourceFile:35)
 at bnc.a(SourceFile:95)
 at tx.a(SourceFile:79)
 at tx.a(SourceFile:25)
 at acu$a.a(SourceFile:147)
 at acu$a$$Lambda$1638/3245920.apply(Unknown Source)
 at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-10: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Snooper Timer: 
 at java.lang.Object.wait(Native Method)
 at java.lang.Object.wait(Object.java:502)
 at java.util.TimerThread.mainLoop(Timer.java:526)
 at java.util.TimerThread.run(Timer.java:505)
WorldGen-Worker-1: 
 at java.lang.Thread.getStackTrace(Thread.java:1552)
 at bnp.a(SourceFile:41)
 at bnp$$Lambda$1667/29343506.apply(Unknown Source)
 at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
 at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
 at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1540)
 at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
 at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
 at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
 at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
 at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
 at bnp.b(SourceFile:42)
 at bnp.a(SourceFile:110)
 at bnj.a(SourceFile:68)
 at bnq.a(SourceFile:168)
 at ti.a(SourceFile:217)
 at bsd.a(SourceFile:133)
 at bsd.a(SourceFile:42)
 at bsd.a(SourceFile:14)
 at bvw.a(SourceFile:21)
 at bvw.a(SourceFile:14)
 at bpm.a(SourceFile:27)
 at ayt.a(SourceFile:504)
 at boo.a(SourceFile:183)
 at tr.a(SourceFile:12)
 at tq.a(SourceFile:35)
 at bnc.a(SourceFile:95)
 at tx.a(SourceFile:79)
 at tx.a(SourceFile:25)
 at acu$a.a(SourceFile:147)
 at acu$a$$Lambda$1638/3245920.apply(Unknown Source)
 at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-3: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Snooper Timer: 
 at java.lang.Object.wait(Native Method)
 at java.lang.Object.wait(Object.java:502)
 at java.util.TimerThread.mainLoop(Timer.java:526)
 at java.util.TimerThread.run(Timer.java:505)
Signal Dispatcher: 
 at 
WorldGen-Worker-7: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Attach Listener: 
 at 
Thread-3: 
 at java.lang.Thread.sleep(Native Method)
 at paulscode.sound.SimpleThread.snooze(SimpleThread.java:196)
 at paulscode.sound.StreamThread.run(StreamThread.java:209)
Client thread: 
 at java.lang.Thread.sleep(Native Method)
 at cfs.a(SourceFile:1481)
 at cmx.j(SourceFile:305)
 at cmx.a(SourceFile:24)
 at cmx$1.a(SourceFile:87)
 at cgt.mouseClicked(SourceFile:103)
 at chp.mouseClicked(SourceFile:46)
 at cmx.mouseClicked(SourceFile:397)
 at cfu.b(SourceFile:83)
 at cfu$$Lambda$1005/7174193.run(Unknown Source)
 at ckc.a(SourceFile:430)
 at cfu.a(SourceFile:83)
 at cfu$$Lambda$838/19412746.invoke(Unknown Source)
 at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
 at org.lwjgl.system.JNI.invokeV(Native Method)
 at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3108)
 at cgc.a(SourceFile:321)
 at cfs.c(SourceFile:875)
 at cfs.a(SourceFile:395)
 at net.minecraft.client.main.Main.main(SourceFile:144)
Finalizer: 
 at java.lang.Object.wait(Native Method)
 at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:142)
 at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:158)
 at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
Narrator: 
 at java.lang.Thread.sleep(Native Method)
 at com.mojang.text2speech.NarratorWindows$NarratorThread.run(NarratorWindows.java:72)
 at java.lang.Thread.run(Thread.java:745)
Thread-2: 
 at java.lang.Thread.sleep(Native Method)
 at paulscode.sound.SimpleThread.snooze(SimpleThread.java:196)
 at paulscode.sound.CommandThread.run(CommandThread.java:133)
Reference Handler: 
 at java.lang.Object.wait(Native Method)
 at java.lang.Object.wait(Object.java:502)
 at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)
Server thread: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:273)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3226)
 at java.util.concurrent.CompletableFuture.timedAwaitDone(CompletableFuture.java:370)
 at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2260)
 at net.minecraft.server.MinecraftServer.a(SourceFile:433)
 at dgg.a(SourceFile:92)
 at dgg.d(SourceFile:108)
 at net.minecraft.server.MinecraftServer.run(SourceFile:566)
 at java.lang.Thread.run(Thread.java:745)
WorldGen-Worker-9: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-4: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Timer hack thread: 
 at java.lang.Thread.sleep(Native Method)
 at cfs$1.run(SourceFile:638)
WorldGen-Worker-8: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
WorldGen-Worker-2: 
 at sun.misc.Unsafe.park(Native Method)
 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
 at java.util.concurrent.CompletableFuture$WaitNode.block(CompletableFuture.java:271)
 at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3216)
 at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:319)
 at java.util.concurrent.CompletableFuture.access$000(CompletableFuture.java:111)
 at java.util.concurrent.CompletableFuture$AsyncCompose.exec(CompletableFuture.java:616)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Stacktrace:
 at bnp.b(SourceFile:43)
 at bnp.a(SourceFile:110)
 at bnj.a(SourceFile:68)
 at bnq.a(SourceFile:168)
 at ti.a(SourceFile:217)
 at bsd.a(SourceFile:133)
 at bsd.a(SourceFile:42)
 at bsd.a(SourceFile:14)
 at bvw.a(SourceFile:21)
 at bvw.a(SourceFile:14)
 at bpm.a(SourceFile:27)
 at ayt.a(SourceFile:504)
 at boo.a(SourceFile:183)
 at tr.a(SourceFile:12)
 at tq.a(SourceFile:35)
 at bnc.a(SourceFile:95)
 at tx.a(SourceFile:79)
 at tx.a(SourceFile:25)
 at acu$a.a(SourceFile:147)
 at acu$a$$Lambda$1638/3245920.apply(Unknown Source)
 at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501)
 at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
 at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
 at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
 at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
 at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)