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Spark thread won't terminate properly on Fabric 1.16.2

Neubulae opened this issue · 5 comments

commented

After attaching a profiler to the server the profiler notified me for Spark being potentially deadlocked, and the thread is preventing the server from shutting down after issuing stop command.

commented

#77

commented

spark-fabric-async-worker is not a daemon thread, it block JVM shutdown.

Thread dump

Full thread dump OpenJDK 64-Bit Server VM (15.0.1+9 mixed mode, sharing): 
Threads class SMR info: 
_java_thread_list=0x00007fdeb01ad540, length=24, elements={ 
0x00007fdf3015b600, 0x00007fdf3015cde0, 0x00007fdf301638a0, 0x00007fdf30165010, 
0x00007fdf30166c90, 0x00007fdf30168520, 0x00007fdf30169c80, 0x00007fdf301b0c80, 
0x00007fdf301b4b20, 0x00007fdf312fa560, 0x00007fdf31752dc0, 0x00007fdf31533040, 
0x00007fdf30084d10, 0x00007fdeb023a500, 0x00007fdeb023ba00, 0x00007fdeb0269c50, 
0x00007fdeb026b410, 0x00007fde9c007760, 0x00007fde9c00a590, 0x00007fdeb0625a30, 
0x00007fdeb0627a50, 0x00007fde8800c300, 0x00007fdeb0097e40, 0x00007fde8800d5f0 
} 
"Reference Handler" #2 daemon prio=10 os_prio=0 cpu=7.38ms elapsed=1753.97s tid=0x00007fdf3015b600 nid=0xb waiting on condition  [0x00007fdf12360000] 
   java.lang.Thread.State: RUNNABLE 
	at java.lang.ref.Reference.waitForReferencePendingList([email protected]/Native Method) 
	at java.lang.ref.Reference.processPendingReferences([email protected]/Unknown Source) 
	at java.lang.ref.Reference$ReferenceHandler.run([email protected]/Unknown Source) 
"Finalizer" #3 daemon prio=8 os_prio=0 cpu=0.80ms elapsed=1753.97s tid=0x00007fdf3015cde0 nid=0xc in Object.wait()  [0x00007fdf1225f000] 
   java.lang.Thread.State: WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <0x000000009998c748> (a java.lang.ref.ReferenceQueue$Lock) 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	- locked <0x000000009998c748> (a java.lang.ref.ReferenceQueue$Lock) 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	at java.lang.ref.Finalizer$FinalizerThread.run([email protected]/Unknown Source) 
"Signal Dispatcher" #4 daemon prio=9 os_prio=0 cpu=0.17ms elapsed=1753.97s tid=0x00007fdf301638a0 nid=0xd waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"Service Thread" #5 daemon prio=9 os_prio=0 cpu=98.94ms elapsed=1753.97s tid=0x00007fdf30165010 nid=0xe runnable  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"C2 CompilerThread0" #6 daemon prio=9 os_prio=0 cpu=62059.86ms elapsed=1753.97s tid=0x00007fdf30166c90 nid=0xf waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
   No compile task 
"C1 CompilerThread0" #8 daemon prio=9 os_prio=0 cpu=7521.67ms elapsed=1753.96s tid=0x00007fdf30168520 nid=0x10 waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
   No compile task 
"Sweeper thread" #9 daemon prio=9 os_prio=0 cpu=866.47ms elapsed=1753.96s tid=0x00007fdf30169c80 nid=0x11 runnable  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"Notification Thread" #10 daemon prio=9 os_prio=0 cpu=0.10ms elapsed=1753.95s tid=0x00007fdf301b0c80 nid=0x12 runnable  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"Common-Cleaner" #11 daemon prio=8 os_prio=0 cpu=7.03ms elapsed=1753.95s tid=0x00007fdf301b4b20 nid=0x14 in Object.wait()  [0x00007fdf11a33000] 
   java.lang.Thread.State: TIMED_WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <no object reference available> 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	- locked <0x00000000999fa540> (a java.lang.ref.ReferenceQueue$Lock) 
	at jdk.internal.ref.CleanerImpl.run([email protected]/Unknown Source) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
	at jdk.internal.misc.InnocuousThread.run([email protected]/Unknown Source) 
"Worker-Bootstrap-2" #70 daemon prio=5 os_prio=0 cpu=28672.80ms elapsed=1748.25s tid=0x00007fdf312fa560 nid=0x50 waiting on condition  [0x00007fdf1056a000] 
   java.lang.Thread.State: WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000fe0b4cd0> (a java.util.concurrent.ForkJoinPool) 
	at java.util.concurrent.locks.LockSupport.park([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinPool.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinWorkerThread.run([email protected]/Unknown Source) 
"Timer hack thread" #72 daemon prio=5 os_prio=0 cpu=0.09ms elapsed=1747.12s tid=0x00007fdf31752dc0 nid=0x52 waiting on condition  [0x00007fdece232000] 
   java.lang.Thread.State: TIMED_WAITING (sleeping) 
	at java.lang.Thread.sleep([email protected]/Native Method) 
	at net.minecraft.class_156$6.run(class_156.java:636) 
"Snooper Timer" #77 daemon prio=5 os_prio=0 cpu=0.14ms elapsed=1741.74s tid=0x00007fdf31533040 nid=0x57 in Object.wait()  [0x00007fdecd62a000] 
   java.lang.Thread.State: WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <0x00000000f4d80238> (a java.util.TaskQueue) 
	at java.lang.Object.wait([email protected]/Unknown Source) 
	at java.util.TimerThread.mainLoop([email protected]/Unknown Source) 
	- locked <0x00000000f4d80238> (a java.util.TaskQueue) 
	at java.util.TimerThread.run([email protected]/Unknown Source) 
"DestroyJavaVM" #79 prio=5 os_prio=0 cpu=8060.09ms elapsed=1741.73s tid=0x00007fdf30084d10 nid=0x6 waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"spark-cpu-monitor" #80 daemon prio=5 os_prio=0 cpu=823.45ms elapsed=1741.18s tid=0x00007fdeb023a500 nid=0x59 waiting on condition  [0x00007fdeccbda000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000f4580e78> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.getTask([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor$Worker.run([email protected]/Unknown Source) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"spark-fabric-async-worker" #81 prio=5 os_prio=0 cpu=1.57ms elapsed=1741.18s tid=0x00007fdeb023ba00 nid=0x5a waiting on condition  [0x00007fdeccad9000] 
   java.lang.Thread.State: WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000f4581220> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) 
	at java.util.concurrent.locks.LockSupport.park([email protected]/Unknown Source) 
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionNode.block([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinPool.managedBlock([email protected]/Unknown Source) 
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.getTask([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor$Worker.run([email protected]/Unknown Source) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"DefaultDispatcher-worker-1" #82 daemon prio=5 os_prio=0 cpu=310.67ms elapsed=1741.08s tid=0x00007fdeb0269c50 nid=0x5b waiting on condition  [0x00007fdecd0e4000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"DefaultDispatcher-worker-2" #83 daemon prio=5 os_prio=0 cpu=1.19ms elapsed=1741.08s tid=0x00007fdeb026b410 nid=0x5c waiting on condition  [0x00007fdeccfe3000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"DefaultDispatcher-worker-3" #84 daemon prio=5 os_prio=0 cpu=1.32ms elapsed=1741.07s tid=0x00007fde9c007760 nid=0x5d waiting on condition  [0x00007fdeccee2000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"DefaultDispatcher-worker-4" #85 daemon prio=5 os_prio=0 cpu=47.52ms elapsed=1741.07s tid=0x00007fde9c00a590 nid=0x5e waiting on condition  [0x00007fdecc9d8000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"ObjectCleanerThread" #88 daemon prio=1 os_prio=0 cpu=8.48ms elapsed=1739.64s tid=0x00007fdeb0625a30 nid=0x61 in Object.wait()  [0x00007fdecd225000] 
   java.lang.Thread.State: TIMED_WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <no object reference available> 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	- locked <0x00000000f4800c90> (a java.lang.ref.ReferenceQueue$Lock) 
	at io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54) 
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"Netty Epoll Server IO #0" #89 daemon prio=5 os_prio=0 cpu=75.41ms elapsed=1739.64s tid=0x00007fdeb0627a50 nid=0x62 runnable  [0x00007fde93bee000] 
   java.lang.Thread.State: RUNNABLE 
	at io.netty.channel.epoll.Native.epollWait0(Native Method) 
	at io.netty.channel.epoll.Native.epollWait(Native.java:114) 
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239) 
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256) 
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"Netty Epoll Server IO #1" #96 daemon prio=5 os_prio=0 cpu=5028.13ms elapsed=1729.49s tid=0x00007fde8800c300 nid=0x6a runnable  [0x00007fde934e9000] 
   java.lang.Thread.State: RUNNABLE 
	at io.netty.channel.epoll.Native.epollWait0(Native Method) 
	at io.netty.channel.epoll.Native.epollWait(Native.java:114) 
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239) 
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256) 
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"ForkJoinPool.commonPool-worker-3" #99 daemon prio=5 os_prio=0 cpu=1.17ms elapsed=1707.11s tid=0x00007fdeb0097e40 nid=0x81 waiting on condition  [0x00007fde933e8000] 
   java.lang.Thread.State: WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000ff13e170> (a java.util.concurrent.ForkJoinPool) 
	at java.util.concurrent.locks.LockSupport.park([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinPool.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinWorkerThread.run([email protected]/Unknown Source) 
"Netty Epoll Server IO #2" #191 daemon prio=5 os_prio=0 cpu=5860.62ms elapsed=679.77s tid=0x00007fde8800d5f0 nid=0x312 runnable  [0x00007fde93aed000] 
   java.lang.Thread.State: RUNNABLE 
	at io.netty.channel.epoll.Native.epollWait0(Native Method) 
	at io.netty.channel.epoll.Native.epollWait(Native.java:114) 
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239) 
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256) 
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"VM Thread" os_prio=0 cpu=257.73ms elapsed=1753.97s tid=0x00007fdf301587f0 nid=0xa runnable 
"Shenandoah GC Threads#0" os_prio=0 cpu=43680.35ms elapsed=1753.98s tid=0x00007fdf30094a80 nid=0x7 runnable 
"Shenandoah GC Threads#1" os_prio=0 cpu=35459.13ms elapsed=1750.15s tid=0x00007fdf00000f20 nid=0x4e runnable 
"Safepoint Cleanup Thread#0" os_prio=0 cpu=108.86ms elapsed=1753.98s tid=0x00007fdf300958e0 nid=0x8 runnable 
"VM Periodic Task Thread" os_prio=0 cpu=3393.96ms elapsed=1753.95s tid=0x00007fdf301b2900 nid=0x13 waiting on condition 
JNI global refs: 27, weak refs: 0 
Heap 
Shenandoah Heap 
 1638M max, 1638M soft max, 310M committed, 305M used 
 3276 x 512K regions 
Status: not cancelled 
Reserved region: 
 - [0x0000000099980000, 0x0000000100000000) 
Collection set: 
 - map (vanilla): 0x0000000000011333 
 - map (biased):  0x0000000000010000 
 Metaspace       used 86182K, capacity 86898K, committed 88192K, reserved 1126400K 
  class space    used 11461K, capacity 11750K, committed 11904K, reserved 1048576K
commented

spark-fabric-async-worker is not a daemon thread, it block JVM shutdown.

Thread dump

Full thread dump OpenJDK 64-Bit Server VM (15.0.1+9 mixed mode, sharing): 
Threads class SMR info: 
_java_thread_list=0x00007fdeb01ad540, length=24, elements={ 
0x00007fdf3015b600, 0x00007fdf3015cde0, 0x00007fdf301638a0, 0x00007fdf30165010, 
0x00007fdf30166c90, 0x00007fdf30168520, 0x00007fdf30169c80, 0x00007fdf301b0c80, 
0x00007fdf301b4b20, 0x00007fdf312fa560, 0x00007fdf31752dc0, 0x00007fdf31533040, 
0x00007fdf30084d10, 0x00007fdeb023a500, 0x00007fdeb023ba00, 0x00007fdeb0269c50, 
0x00007fdeb026b410, 0x00007fde9c007760, 0x00007fde9c00a590, 0x00007fdeb0625a30, 
0x00007fdeb0627a50, 0x00007fde8800c300, 0x00007fdeb0097e40, 0x00007fde8800d5f0 
} 
"Reference Handler" #2 daemon prio=10 os_prio=0 cpu=7.38ms elapsed=1753.97s tid=0x00007fdf3015b600 nid=0xb waiting on condition  [0x00007fdf12360000] 
   java.lang.Thread.State: RUNNABLE 
	at java.lang.ref.Reference.waitForReferencePendingList([email protected]/Native Method) 
	at java.lang.ref.Reference.processPendingReferences([email protected]/Unknown Source) 
	at java.lang.ref.Reference$ReferenceHandler.run([email protected]/Unknown Source) 
"Finalizer" #3 daemon prio=8 os_prio=0 cpu=0.80ms elapsed=1753.97s tid=0x00007fdf3015cde0 nid=0xc in Object.wait()  [0x00007fdf1225f000] 
   java.lang.Thread.State: WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <0x000000009998c748> (a java.lang.ref.ReferenceQueue$Lock) 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	- locked <0x000000009998c748> (a java.lang.ref.ReferenceQueue$Lock) 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	at java.lang.ref.Finalizer$FinalizerThread.run([email protected]/Unknown Source) 
"Signal Dispatcher" #4 daemon prio=9 os_prio=0 cpu=0.17ms elapsed=1753.97s tid=0x00007fdf301638a0 nid=0xd waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"Service Thread" #5 daemon prio=9 os_prio=0 cpu=98.94ms elapsed=1753.97s tid=0x00007fdf30165010 nid=0xe runnable  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"C2 CompilerThread0" #6 daemon prio=9 os_prio=0 cpu=62059.86ms elapsed=1753.97s tid=0x00007fdf30166c90 nid=0xf waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
   No compile task 
"C1 CompilerThread0" #8 daemon prio=9 os_prio=0 cpu=7521.67ms elapsed=1753.96s tid=0x00007fdf30168520 nid=0x10 waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
   No compile task 
"Sweeper thread" #9 daemon prio=9 os_prio=0 cpu=866.47ms elapsed=1753.96s tid=0x00007fdf30169c80 nid=0x11 runnable  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"Notification Thread" #10 daemon prio=9 os_prio=0 cpu=0.10ms elapsed=1753.95s tid=0x00007fdf301b0c80 nid=0x12 runnable  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"Common-Cleaner" #11 daemon prio=8 os_prio=0 cpu=7.03ms elapsed=1753.95s tid=0x00007fdf301b4b20 nid=0x14 in Object.wait()  [0x00007fdf11a33000] 
   java.lang.Thread.State: TIMED_WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <no object reference available> 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	- locked <0x00000000999fa540> (a java.lang.ref.ReferenceQueue$Lock) 
	at jdk.internal.ref.CleanerImpl.run([email protected]/Unknown Source) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
	at jdk.internal.misc.InnocuousThread.run([email protected]/Unknown Source) 
"Worker-Bootstrap-2" #70 daemon prio=5 os_prio=0 cpu=28672.80ms elapsed=1748.25s tid=0x00007fdf312fa560 nid=0x50 waiting on condition  [0x00007fdf1056a000] 
   java.lang.Thread.State: WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000fe0b4cd0> (a java.util.concurrent.ForkJoinPool) 
	at java.util.concurrent.locks.LockSupport.park([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinPool.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinWorkerThread.run([email protected]/Unknown Source) 
"Timer hack thread" #72 daemon prio=5 os_prio=0 cpu=0.09ms elapsed=1747.12s tid=0x00007fdf31752dc0 nid=0x52 waiting on condition  [0x00007fdece232000] 
   java.lang.Thread.State: TIMED_WAITING (sleeping) 
	at java.lang.Thread.sleep([email protected]/Native Method) 
	at net.minecraft.class_156$6.run(class_156.java:636) 
"Snooper Timer" #77 daemon prio=5 os_prio=0 cpu=0.14ms elapsed=1741.74s tid=0x00007fdf31533040 nid=0x57 in Object.wait()  [0x00007fdecd62a000] 
   java.lang.Thread.State: WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <0x00000000f4d80238> (a java.util.TaskQueue) 
	at java.lang.Object.wait([email protected]/Unknown Source) 
	at java.util.TimerThread.mainLoop([email protected]/Unknown Source) 
	- locked <0x00000000f4d80238> (a java.util.TaskQueue) 
	at java.util.TimerThread.run([email protected]/Unknown Source) 
"DestroyJavaVM" #79 prio=5 os_prio=0 cpu=8060.09ms elapsed=1741.73s tid=0x00007fdf30084d10 nid=0x6 waiting on condition  [0x0000000000000000] 
   java.lang.Thread.State: RUNNABLE 
"spark-cpu-monitor" #80 daemon prio=5 os_prio=0 cpu=823.45ms elapsed=1741.18s tid=0x00007fdeb023a500 nid=0x59 waiting on condition  [0x00007fdeccbda000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000f4580e78> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.getTask([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor$Worker.run([email protected]/Unknown Source) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"spark-fabric-async-worker" #81 prio=5 os_prio=0 cpu=1.57ms elapsed=1741.18s tid=0x00007fdeb023ba00 nid=0x5a waiting on condition  [0x00007fdeccad9000] 
   java.lang.Thread.State: WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000f4581220> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) 
	at java.util.concurrent.locks.LockSupport.park([email protected]/Unknown Source) 
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionNode.block([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinPool.managedBlock([email protected]/Unknown Source) 
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.getTask([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ThreadPoolExecutor$Worker.run([email protected]/Unknown Source) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"DefaultDispatcher-worker-1" #82 daemon prio=5 os_prio=0 cpu=310.67ms elapsed=1741.08s tid=0x00007fdeb0269c50 nid=0x5b waiting on condition  [0x00007fdecd0e4000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"DefaultDispatcher-worker-2" #83 daemon prio=5 os_prio=0 cpu=1.19ms elapsed=1741.08s tid=0x00007fdeb026b410 nid=0x5c waiting on condition  [0x00007fdeccfe3000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"DefaultDispatcher-worker-3" #84 daemon prio=5 os_prio=0 cpu=1.32ms elapsed=1741.07s tid=0x00007fde9c007760 nid=0x5d waiting on condition  [0x00007fdeccee2000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"DefaultDispatcher-worker-4" #85 daemon prio=5 os_prio=0 cpu=47.52ms elapsed=1741.07s tid=0x00007fde9c00a590 nid=0x5e waiting on condition  [0x00007fdecc9d8000] 
   java.lang.Thread.State: TIMED_WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	at java.util.concurrent.locks.LockSupport.parkNanos([email protected]/Unknown Source) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.park(CoroutineScheduler.kt:783) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.tryPark(CoroutineScheduler.kt:728) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:711) 
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
"ObjectCleanerThread" #88 daemon prio=1 os_prio=0 cpu=8.48ms elapsed=1739.64s tid=0x00007fdeb0625a30 nid=0x61 in Object.wait()  [0x00007fdecd225000] 
   java.lang.Thread.State: TIMED_WAITING (on object monitor) 
	at java.lang.Object.wait([email protected]/Native Method) 
	- waiting on <no object reference available> 
	at java.lang.ref.ReferenceQueue.remove([email protected]/Unknown Source) 
	- locked <0x00000000f4800c90> (a java.lang.ref.ReferenceQueue$Lock) 
	at io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54) 
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"Netty Epoll Server IO #0" #89 daemon prio=5 os_prio=0 cpu=75.41ms elapsed=1739.64s tid=0x00007fdeb0627a50 nid=0x62 runnable  [0x00007fde93bee000] 
   java.lang.Thread.State: RUNNABLE 
	at io.netty.channel.epoll.Native.epollWait0(Native Method) 
	at io.netty.channel.epoll.Native.epollWait(Native.java:114) 
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239) 
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256) 
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"Netty Epoll Server IO #1" #96 daemon prio=5 os_prio=0 cpu=5028.13ms elapsed=1729.49s tid=0x00007fde8800c300 nid=0x6a runnable  [0x00007fde934e9000] 
   java.lang.Thread.State: RUNNABLE 
	at io.netty.channel.epoll.Native.epollWait0(Native Method) 
	at io.netty.channel.epoll.Native.epollWait(Native.java:114) 
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239) 
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256) 
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"ForkJoinPool.commonPool-worker-3" #99 daemon prio=5 os_prio=0 cpu=1.17ms elapsed=1707.11s tid=0x00007fdeb0097e40 nid=0x81 waiting on condition  [0x00007fde933e8000] 
   java.lang.Thread.State: WAITING (parking) 
	at jdk.internal.misc.Unsafe.park([email protected]/Native Method) 
	- parking to wait for  <0x00000000ff13e170> (a java.util.concurrent.ForkJoinPool) 
	at java.util.concurrent.locks.LockSupport.park([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinPool.runWorker([email protected]/Unknown Source) 
	at java.util.concurrent.ForkJoinWorkerThread.run([email protected]/Unknown Source) 
"Netty Epoll Server IO #2" #191 daemon prio=5 os_prio=0 cpu=5860.62ms elapsed=679.77s tid=0x00007fde8800d5f0 nid=0x312 runnable  [0x00007fde93aed000] 
   java.lang.Thread.State: RUNNABLE 
	at io.netty.channel.epoll.Native.epollWait0(Native Method) 
	at io.netty.channel.epoll.Native.epollWait(Native.java:114) 
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239) 
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256) 
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) 
	at java.lang.Thread.run([email protected]/Unknown Source) 
"VM Thread" os_prio=0 cpu=257.73ms elapsed=1753.97s tid=0x00007fdf301587f0 nid=0xa runnable 
"Shenandoah GC Threads#0" os_prio=0 cpu=43680.35ms elapsed=1753.98s tid=0x00007fdf30094a80 nid=0x7 runnable 
"Shenandoah GC Threads#1" os_prio=0 cpu=35459.13ms elapsed=1750.15s tid=0x00007fdf00000f20 nid=0x4e runnable 
"Safepoint Cleanup Thread#0" os_prio=0 cpu=108.86ms elapsed=1753.98s tid=0x00007fdf300958e0 nid=0x8 runnable 
"VM Periodic Task Thread" os_prio=0 cpu=3393.96ms elapsed=1753.95s tid=0x00007fdf301b2900 nid=0x13 waiting on condition 
JNI global refs: 27, weak refs: 0 
Heap 
Shenandoah Heap 
 1638M max, 1638M soft max, 310M committed, 305M used 
 3276 x 512K regions 
Status: not cancelled 
Reserved region: 
 - [0x0000000099980000, 0x0000000100000000) 
Collection set: 
 - map (vanilla): 0x0000000000011333 
 - map (biased):  0x0000000000010000 
 Metaspace       used 86182K, capacity 86898K, committed 88192K, reserved 1126400K 
  class space    used 11461K, capacity 11750K, committed 11904K, reserved 1048576K

huh, then how to daemon it

commented

i try to append a setDaemon and see if it works

commented

Should be fixed in the latest version - thanks for reporting (and thanks @james58899 for the PR!)

  • 👍1