[JENKINS] Lucene-Solr-master-Linux (64bit/jdk-9.0.1) - Build # 21145 - Still Unstable!

[Policeman Jenkins Server <je...@thetaphi.de>]

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/21145/
Java: 64bit/jdk-9.0.1 -XX:-UseCompressedOops -XX:+UseConcMarkSweepGC

3 tests failed.
FAILED:  junit.framework.TestSuite.org.apache.solr.cloud.UnloadDistributedZkTest

Error Message:
93 threads leaked from SUITE scope at org.apache.solr.cloud.UnloadDistributedZkTest:     1) Thread[id=11337, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    2) Thread[id=11315, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    3) Thread[id=11253, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    4) Thread[id=11393, name=zkCallback-2384-thread-6, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    5) Thread[id=11278, name=qtp1313505833-11278, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    6) Thread[id=11322, name=zkConnectionManagerCallback-2374-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    7) Thread[id=11391, name=zkCallback-2384-thread-4, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    8) Thread[id=11242, name=qtp121309220-11242, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)    9) Thread[id=11343, name=qtp959788998-11343, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.solr.cloud.ZkController.waitForShardId(ZkController.java:1562)         at app//org.apache.solr.cloud.ZkController.doGetShardIdAndNodeNameProcess(ZkController.java:1513)         at app//org.apache.solr.cloud.ZkController.preRegister(ZkController.java:1622)         at app//org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1036)         at app//org.apache.solr.core.CoreContainer.create(CoreContainer.java:954)         at app//org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:91)         at app//org.apache.solr.handler.admin.CoreAdminOperation$$Lambda$293/719478773.execute(Unknown Source)         at app//org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:384)         at app//org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:389)         at app//org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:174)         at app//org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:177)         at app//org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:736)         at app//org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:717)         at app//org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:498)         at app//org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:382)         at app//org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:326)         at app//org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)         at app//org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:139)         at app//org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)         at app//org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)         at app//org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:224)         at app//org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)         at app//org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)         at app//org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)         at app//org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)         at app//org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)         at app//org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:426)         at app//org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)         at app//org.eclipse.jetty.server.Server.handle(Server.java:534)         at app//org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)         at app//org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)         at app//org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)         at app//org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)         at app//org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   10) Thread[id=11262, name=Thread-2815, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Object.wait(Native Method)         at java.base@9.0.1/java.lang.Object.wait(Object.java:516)         at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)   11) Thread[id=11362, name=Scheduler-208758139, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1131)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   12) Thread[id=11396, name=zkCallback-2373-thread-5, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   13) Thread[id=11272, name=qtp1313505833-11272, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   14) Thread[id=11266, name=Scheduler-729495452, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1131)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   15) Thread[id=11328, name=Scheduler-952231466, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1119)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   16) Thread[id=11276, name=qtp1313505833-11276-acceptor-0@693959eb-ServerConnector@5d6177a6{HTTP/1.1,[http/1.1]}{127.0.0.1:33021}, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:424)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:252)         at app//org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:371)         at app//org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:601)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   17) Thread[id=11291, name=zkConnectionManagerCallback-2364-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   18) Thread[id=11269, name=searcherExecutor-4209-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   19) Thread[id=11324, name=Thread-2833, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Object.wait(Native Method)         at java.base@9.0.1/java.lang.Object.wait(Object.java:516)         at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)   20) Thread[id=11254, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   21) Thread[id=11309, name=qtp1881775898-11309, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   22) Thread[id=11277, name=qtp1313505833-11277, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   23) Thread[id=11304, name=qtp1881775898-11304, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   24) Thread[id=11394, name=zkCallback-2373-thread-3, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   25) Thread[id=11395, name=zkCallback-2373-thread-4, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   26) Thread[id=11244, name=qtp121309220-11244, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   27) Thread[id=11355, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-SendThread(127.0.0.1:40293), state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1051)   28) Thread[id=11333, name=recoveryExecutor-2370-thread-1-processing-n:127.0.0.1:33209_mrb%2Fo x:collection1_shard2_replica_n45 s:shard2 c:collection1 r:core_node46, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)         at app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)         at app//org.apache.solr.common.cloud.SolrZkClient.create(SolrZkClient.java:364)         at app//org.apache.solr.cloud.ZkDistributedQueue.offer(ZkDistributedQueue.java:321)         at app//org.apache.solr.cloud.ZkController.publish(ZkController.java:1438)         at app//org.apache.solr.cloud.ZkController.publish(ZkController.java:1342)         at app//org.apache.solr.cloud.ZkController.publish(ZkController.java:1338)         at app//org.apache.solr.cloud.RecoveryStrategy.doSyncOrReplicateRecovery(RecoveryStrategy.java:551)         at app//org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:308)         at app//org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:292)         at app//com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)         at java.base@9.0.1/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)         at java.base@9.0.1/java.util.concurrent.FutureTask.run(FutureTask.java:264)         at app//org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)         at app//org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$143/509711272.run(Unknown Source)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   29) Thread[id=11344, name=qtp959788998-11344, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   30) Thread[id=11350, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   31) Thread[id=11305, name=qtp1881775898-11305, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)         at app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   32) Thread[id=11249, name=org.eclipse.jetty.server.session.HashSessionManager@37196180Timer, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1131)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   33) Thread[id=11339, name=qtp959788998-11339, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   34) Thread[id=11332, name=updateExecutor-2369-thread-1-processing-n:127.0.0.1:33209_mrb%2Fo x:collection1_shard2_replica_n45 s:shard2 c:collection1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.FutureTask.awaitDone(FutureTask.java:447)         at java.base@9.0.1/java.util.concurrent.FutureTask.get(FutureTask.java:190)         at app//org.apache.solr.update.DefaultSolrCoreState$2.run(DefaultSolrCoreState.java:339)         at app//com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)         at java.base@9.0.1/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)         at java.base@9.0.1/java.util.concurrent.FutureTask.run(FutureTask.java:264)         at app//org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)         at app//org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$143/509711272.run(Unknown Source)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   35) Thread[id=11293, name=Thread-2824, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Object.wait(Native Method)         at java.base@9.0.1/java.lang.Object.wait(Object.java:516)         at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)   36) Thread[id=11386, name=zkCallback-2363-thread-4, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   37) Thread[id=11285, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   38) Thread[id=11390, name=zkCallback-2384-thread-3, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   39) Thread[id=11274, name=qtp1313505833-11274, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   40) Thread[id=11345, name=qtp959788998-11345, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   41) Thread[id=11296, name=Scheduler-1291086313, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1119)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   42) Thread[id=11382, name=zkCallback-2353-thread-4, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   43) Thread[id=11351, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   44) Thread[id=11357, name=zkConnectionManagerCallback-2385-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   45) Thread[id=11384, name=zkCallback-2353-thread-6, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   46) Thread[id=11289, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-SendThread(127.0.0.1:40293), state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:101)         at app//org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:997)         at app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)   47) Thread[id=11264, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   48) Thread[id=11320, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-SendThread(127.0.0.1:40293), state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1051)   49) Thread[id=11346, name=org.eclipse.jetty.server.session.HashSessionManager@52efd4dcTimer, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1131)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   50) Thread[id=11243, name=qtp121309220-11243, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   51) Thread[id=11302, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   52) Thread[id=11275, name=qtp1313505833-11275, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)         at app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   53) Thread[id=11383, name=zkCallback-2353-thread-5, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   54) Thread[id=11338, name=qtp959788998-11338, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   55) Thread[id=11259, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-EventThread, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)   56) Thread[id=11247, name=qtp121309220-11247, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   57) Thread[id=11392, name=zkCallback-2384-thread-5, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   58) Thread[id=11380, name=zkCallback-2353-thread-3-processing-n:127.0.0.1:42429_mrb%2Fo, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)         at app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)         at app//org.apache.solr.common.cloud.SolrZkClient.create(SolrZkClient.java:364)         at app//org.apache.solr.cloud.Overseer.createOverseerNode(Overseer.java:771)         at app//org.apache.solr.cloud.Overseer.start(Overseer.java:515)         at app//org.apache.solr.cloud.OverseerElectionContext.runLeaderProcess(ElectionContext.java:799)         at app//org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170)         at app//org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)         at app//org.apache.solr.cloud.LeaderElector.access$200(LeaderElector.java:56)         at app//org.apache.solr.cloud.LeaderElector$ElectionWatcher.process(LeaderElector.java:348)         at app//org.apache.solr.common.cloud.SolrZkClient$1.lambda$process$1(SolrZkClient.java:268)         at app//org.apache.solr.common.cloud.SolrZkClient$1$$Lambda$222/543642414.run(Unknown Source)         at java.base@9.0.1/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)         at java.base@9.0.1/java.util.concurrent.FutureTask.run(FutureTask.java:264)         at app//org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)         at app//org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$143/509711272.run(Unknown Source)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   59) Thread[id=11385, name=zkCallback-2353-thread-7, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   60) Thread[id=11295, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   61) Thread[id=11388, name=zkCallback-2363-thread-6, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   62) Thread[id=11359, name=Thread-2842, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Object.wait(Native Method)         at java.base@9.0.1/java.lang.Object.wait(Object.java:516)         at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)   63) Thread[id=11245, name=qtp121309220-11245-acceptor-0@1f1eef9-ServerConnector@4c34f33f{HTTP/1.1,[http/1.1]}{127.0.0.1:42429}, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:424)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:252)         at app//org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:371)         at app//org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:601)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   64) Thread[id=11342, name=qtp959788998-11342-acceptor-0@2b39a111-ServerConnector@25fe4a06{HTTP/1.1,[http/1.1]}{127.0.0.1:41515}, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:424)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:252)         at app//org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:371)         at app//org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:601)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   65) Thread[id=11307, name=qtp1881775898-11307-acceptor-0@7726a8bd-ServerConnector@4cf66335{HTTP/1.1,[http/1.1]}{127.0.0.1:33209}, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:424)         at java.base@9.0.1/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:252)         at app//org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:371)         at app//org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:601)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   66) Thread[id=11280, name=org.eclipse.jetty.server.session.HashSessionManager@3cdde1fTimer, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1131)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   67) Thread[id=11361, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   68) Thread[id=11246, name=qtp121309220-11246, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   69) Thread[id=11387, name=zkCallback-2363-thread-5, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   70) Thread[id=11310, name=qtp1881775898-11310, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   71) Thread[id=11303, name=qtp1881775898-11303, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   72) Thread[id=11279, name=qtp1313505833-11279, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   73) Thread[id=11241, name=qtp121309220-11241, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   74) Thread[id=11356, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-EventThread, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)   75) Thread[id=11273, name=qtp1313505833-11273, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   76) Thread[id=11397, name=zkCallback-2373-thread-6, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   77) Thread[id=11306, name=qtp1881775898-11306, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)         at app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   78) Thread[id=11290, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-EventThread, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)   79) Thread[id=11308, name=qtp1881775898-11308, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:563)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:48)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   80) Thread[id=11341, name=qtp959788998-11341, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)         at app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   81) Thread[id=11321, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-EventThread, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)   82) Thread[id=11284, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   83) Thread[id=11340, name=qtp959788998-11340, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)         at app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   84) Thread[id=11326, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   85) Thread[id=11389, name=zkCallback-2363-thread-7, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)         at java.base@9.0.1/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1091)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   86) Thread[id=11248, name=qtp121309220-11248, state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at java.base@9.0.1/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)         at java.base@9.0.1/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at java.base@9.0.1/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)         at app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)         at app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)         at app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   87) Thread[id=11271, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   88) Thread[id=11311, name=org.eclipse.jetty.server.session.HashSessionManager@6073914Timer, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2104)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1131)         at java.base@9.0.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:848)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   89) Thread[id=11316, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   90) Thread[id=11260, name=zkConnectionManagerCallback-2354-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   91) Thread[id=11258, name=TEST-UnloadDistributedZkTest.test-seed#[3FD193F9CEABDE6D]-SendThread(127.0.0.1:40293), state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/java.lang.Thread.sleep(Native Method)         at app//org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:101)         at app//org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:997)         at app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)   92) Thread[id=11300, name=searcherExecutor-4220-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)   93) Thread[id=11331, name=searcherExecutor-4231-thread-1, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)         at java.base@9.0.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)         at java.base@9.0.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2062)         at java.base@9.0.1/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1092)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)         at java.base@9.0.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)         at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 93 threads leaked from SUITE scope at org.apache.solr.cloud.UnloadDistributedZkTest: 
   1) Thread[id=11337, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]
        at java.base@9.0.1/java.lang.Thread.sleep(Native Method)
        at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)
   2) Thread[id=11315, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]
        at java.base@9.0.1/java.lang.Thread.sleep(Native Method)
        at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)
   3) Thread[id=11253, name=Connection evictor, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]
        at java.base@9.0.1/java.lang.Thread.sleep(Native Method)
        at app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@9.0.1/java.lang.Thread.run(Thread.java:844)
   4) Thread[id=11393, name=zkCallback-2384-thread-6, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]
        at java.base@9.0.1/jdk.internal.misc.Unsafe.park(Native Method)
        at java.base@9.0.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at java.base@9.0.1/java.util.concurrent.SynchronousQueue$TransferStack.awai

[...truncated too long message...]

, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-analytics/test/temp/junit4-J1-20171226_072513_33813900740336884321471.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-analytics/test/temp/junit4-J0-20171226_072513_3388990815708576230994.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 553 lines...]
   [junit4] JVM J2: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-clustering/test/temp/junit4-J2-20171226_072617_10812627523982817651522.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-clustering/test/temp/junit4-J1-20171226_072617_1083710350884204439348.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-clustering/test/temp/junit4-J0-20171226_072617_10816005379770014890679.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 1260 lines...]
   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler-extras/test/temp/junit4-J1-20171226_072632_0659701881336592295832.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler-extras/test/temp/junit4-J0-20171226_072632_0651510581878379341466.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 650 lines...]
   [junit4] JVM J2: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler/test/temp/junit4-J2-20171226_072639_0625770403967421390475.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J2: EOF ----

   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler/test/temp/junit4-J0-20171226_072639_06216386584782706275831.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler/test/temp/junit4-J1-20171226_072639_0626401892395851876867.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 558 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-cell/test/temp/junit4-J0-20171226_072700_1839404327561270339039.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J2: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-cell/test/temp/junit4-J2-20171226_072700_18310557914646101638020.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-cell/test/temp/junit4-J1-20171226_072700_1837251927564030070018.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 563 lines...]
   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-langid/test/temp/junit4-J1-20171226_072710_14312395289260520066441.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-langid/test/temp/junit4-J0-20171226_072710_14312340086233613275469.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 646 lines...]
   [junit4] JVM J2: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-ltr/test/temp/junit4-J2-20171226_072716_4926935659023797629727.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 9 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-ltr/test/temp/junit4-J0-20171226_072716_4912910228146496494145.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-ltr/test/temp/junit4-J1-20171226_072716_49111370270448965484861.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 596 lines...]
   [junit4] JVM J1: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-uima/test/temp/junit4-J1-20171226_072743_02910148968558593691414.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-uima/test/temp/junit4-J0-20171226_072743_02913219236181032048620.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 548 lines...]
   [junit4] JVM J0: stderr was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-velocity/test/temp/junit4-J0-20171226_072756_02618315241863100890702.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 32212 lines...]