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Bug
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Resolution: Unresolved
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Critical
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None
I have several Jenkins nodes which go unresponsive during various parts of the day, I can bounce Jenkins from the command line to get things going again, or reboot the machine, but once it wedges again the Web UI never does come back without intervention.
Here's a jstack of a recent such hang:
sudo jstack -F 56400 Attaching to process ID 56400, please wait... Debugger attached successfully. Server compiler detected. JVM version is 25.5-b02 Deadlock Detection: No deadlocks found. Thread 50235: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=215 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.util.concurrent.SynchronousQueue$TransferStack$SNode, boolean, long) @bci=160, line=460 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.lang.Object, boolean, long) @bci=102, line=362 (Compiled frame) - java.util.concurrent.SynchronousQueue.poll(long, java.util.concurrent.TimeUnit) @bci=11, line=941 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=134, line=1066 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Compiled frame) - java.lang.Thread.run() @bci=11, line=745 (Compiled frame) Thread 48143: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Compiled frame) - java.lang.Thread.run() @bci=11, line=745 (Compiled frame) Thread 34695: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.util.concurrent.SynchronousQueue$TransferStack$SNode, boolean, long) @bci=144, line=458 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.lang.Object, boolean, long) @bci=102, line=362 (Compiled frame) - java.util.concurrent.SynchronousQueue.take() @bci=7, line=924 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Compiled frame) - java.lang.Thread.run() @bci=11, line=745 (Compiled frame) Thread 25291: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.util.concurrent.SynchronousQueue$TransferStack$SNode, boolean, long) @bci=144, line=458 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.lang.Object, boolean, long) @bci=102, line=362 (Compiled frame) - java.util.concurrent.SynchronousQueue.take() @bci=7, line=924 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Compiled frame) - java.lang.Thread.run() @bci=11, line=745 (Compiled frame) Thread 51687: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.util.concurrent.SynchronousQueue$TransferStack$SNode, boolean, long) @bci=144, line=458 (Compiled frame) - java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.lang.Object, boolean, long) @bci=102, line=362 (Compiled frame) - java.util.concurrent.SynchronousQueue.take() @bci=7, line=924 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Compiled frame) - java.lang.Thread.run() @bci=11, line=745 (Compiled frame) Thread 34311: (state = IN_NATIVE) - java.net.PlainDatagramSocketImpl.receive0(java.net.DatagramPacket) @bci=0 (Interpreted frame) - java.net.AbstractPlainDatagramSocketImpl.receive(java.net.DatagramPacket) @bci=2, line=143 (Interpreted frame) - java.net.DatagramSocket.receive(java.net.DatagramPacket) @bci=290, line=781 (Interpreted frame) - hudson.UDPBroadcastThread.run() @bci=39, line=82 (Interpreted frame) Thread 32775: (state = IN_NATIVE) - sun.nio.ch.ServerSocketChannelImpl.accept0(java.io.FileDescriptor, java.io.FileDescriptor, java.net.InetSocketAddress[]) @bci=0 (Interpreted frame) - sun.nio.ch.ServerSocketChannelImpl.accept() @bci=130, line=241 (Interpreted frame) - hudson.TcpSlaveAgentListener.run() @bci=4, line=96 (Interpreted frame) Thread 44035: (state = IN_NATIVE) - sun.nio.ch.KQueueArrayWrapper.kevent0(int, long, int, long) @bci=0 (Interpreted frame) - sun.nio.ch.KQueueArrayWrapper.poll(long) @bci=17, line=202 (Interpreted frame) - sun.nio.ch.KQueueSelectorImpl.doSelect(long) @bci=30, line=103 (Interpreted frame) - sun.nio.ch.SelectorImpl.lockAndDoSelect(long) @bci=37, line=86 (Interpreted frame) - sun.nio.ch.SelectorImpl.select(long) @bci=30, line=97 (Interpreted frame) - sun.nio.ch.SelectorImpl.select() @bci=2, line=101 (Interpreted frame) - org.apache.mina.transport.socket.nio.NioSocketAcceptor.select() @bci=4, line=238 (Interpreted frame) - org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.run() @bci=54, line=432 (Interpreted frame) - org.apache.mina.util.NamePreservingRunnable.run() @bci=29, line=64 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=95, line=1142 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 43011: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 42499: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 41987: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 41475: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 40963: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 40451: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 39939: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 39427: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2039 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=100, line=1088 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 38915: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=215 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long) @bci=78, line=2078 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=124, line=1093 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 38403: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=175 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt() @bci=1, line=836 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(int) @bci=72, line=997 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(int) @bci=24, line=1304 (Compiled frame) - java.util.concurrent.Semaphore.acquire() @bci=5, line=312 (Compiled frame) - hudson.plugins.im.IMConnectionProvider$ConnectorRunnable.run() @bci=4, line=160 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 28675: (state = BLOCKED) - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise) - java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=215 (Compiled frame) - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long) @bci=78, line=2078 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=124, line=1093 (Compiled frame) - java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=809 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.getTask() @bci=149, line=1067 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1127 (Compiled frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 28163: (state = BLOCKED) - java.lang.Object.wait(long) @bci=0 (Interpreted frame) - java.lang.Object.wait() @bci=2, line=502 (Interpreted frame) - java.util.TimerThread.mainLoop() @bci=28, line=526 (Interpreted frame) - java.util.TimerThread.run() @bci=1, line=505 (Interpreted frame) Thread 2067: (state = BLOCKED) Thread 27651: (state = BLOCKED) - java.lang.Thread.sleep(long) @bci=0 (Compiled frame; information may be imprecise) - winstone.Launcher.run() @bci=132, line=245 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 27139: (state = BLOCKED) - sun.nio.ch.ServerSocketChannelImpl.accept() @bci=7, line=225 (Interpreted frame) - org.eclipse.jetty.server.nio.SelectChannelConnector.accept(int) @bci=43, line=109 (Interpreted frame) - org.eclipse.jetty.server.AbstractConnector$Acceptor.run() @bci=153, line=938 (Interpreted frame) - winstone.BoundedExecutorService$1.run() @bci=4, line=77 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=95, line=1142 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 26627: (state = IN_NATIVE) - sun.nio.ch.ServerSocketChannelImpl.accept0(java.io.FileDescriptor, java.io.FileDescriptor, java.net.InetSocketAddress[]) @bci=0 (Interpreted frame) - sun.nio.ch.ServerSocketChannelImpl.accept() @bci=130, line=241 (Interpreted frame) - org.eclipse.jetty.server.nio.SelectChannelConnector.accept(int) @bci=43, line=109 (Interpreted frame) - org.eclipse.jetty.server.AbstractConnector$Acceptor.run() @bci=153, line=938 (Interpreted frame) - winstone.BoundedExecutorService$1.run() @bci=4, line=77 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=95, line=1142 (Interpreted frame) - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 24071: (state = BLOCKED) - java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise) - java.lang.ref.ReferenceQueue.remove(long) @bci=44, line=142 (Compiled frame) - java.lang.ref.ReferenceQueue.remove() @bci=2, line=158 (Compiled frame) - sun.java2d.Disposer.run() @bci=3, line=148 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=745 (Interpreted frame) Thread 7691: (state = IN_NATIVE) Thread 22531: (state = BLOCKED) - java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise) - java.util.TimerThread.mainLoop() @bci=201, line=552 (Interpreted frame) - java.util.TimerThread.run() @bci=1, line=505 (Interpreted frame) Thread 18947: (state = BLOCKED) Thread 14595: (state = BLOCKED) - java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise) - java.lang.ref.ReferenceQueue.remove(long) @bci=44, line=142 (Compiled frame) - java.lang.ref.ReferenceQueue.remove() @bci=2, line=158 (Compiled frame) - java.lang.ref.Finalizer$FinalizerThread.run() @bci=36, line=209 (Compiled frame) Thread 14083: (state = BLOCKED) - java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise) - java.lang.Object.wait() @bci=2, line=502 (Compiled frame) - java.lang.ref.Reference$ReferenceHandler.run() @bci=36, line=157 (Compiled frame)
