Build: https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/21189/
Java: 64bit/jdk-10-ea+37 -XX:-UseCompressedOops -XX:+UseParallelGC

4 tests failed.
FAILED:  junit.framework.TestSuite.org.apache.solr.cloud.TestRebalanceLeaders

Error Message:
25 threads leaked from SUITE scope at 
org.apache.solr.cloud.TestRebalanceLeaders:     1) Thread[id=24773, 
name=zkConnectionManagerCallback-5254-thread-1, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    2) 
Thread[id=24778, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    3) 
Thread[id=24766, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    4) 
Thread[id=24754, name=qtp1612914187-24754, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.solr.common.cloud.ZkStateReader.getLeaderRetry(ZkStateReader.java:767)
         at 
app//org.apache.solr.common.cloud.ZkStateReader.getLeaderUrl(ZkStateReader.java:736)
         at 
app//org.apache.solr.cloud.ZkController.getLeader(ZkController.java:1178)       
  at app//org.apache.solr.cloud.ZkController.register(ZkController.java:1079)   
      at 
app//org.apache.solr.cloud.ZkController.register(ZkController.java:1014)        
 at 
app//org.apache.solr.core.ZkContainer.lambda$registerInZk$0(ZkContainer.java:181)
         at 
app//org.apache.solr.core.ZkContainer$$Lambda$416/889793132.run(Unknown Source) 
        at 
app//org.apache.solr.core.ZkContainer.registerInZk(ZkContainer.java:208)        
 at 
app//org.apache.solr.core.CoreContainer.registerCore(CoreContainer.java:892)    
     at 
app//org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1053)
         at 
app//org.apache.solr.core.CoreContainer.create(CoreContainer.java:954)         
at 
app//org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:91)
         at 
app//org.apache.solr.handler.admin.CoreAdminOperation$$Lambda$272/1361978596.execute(Unknown
 Source)         at 
app//org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:384)
         at 
app//org.apache.solr.handler.admin.CoreAdminHandler$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.ssl.SslConnection.onFillable(SslConnection.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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    5) 
Thread[id=24776, name=Thread-5715, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Object.wait(Native Method)         at 
java.base@10-ea/java.lang.Object.wait(Object.java:328)         at 
app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)    6) 
Thread[id=24762, 
name=org.eclipse.jetty.server.session.HashSessionManager@3578f4e3Timer, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    7) 
Thread[id=24795, 
name=OverseerAutoScalingTriggerThread-99273183823986698-127.0.0.1:41375_-n_0000000001,
 state=TIMED_WAITING, group=Overseer autoscaling triggers]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
         at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
app//org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:339)   
      at 
app//org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:173)
         at 
app//org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:74)
         at 
app//org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:117)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    8) 
Thread[id=24755, name=qtp1612914187-24755, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         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$2.run(QueuedThreadPool.java:626)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    9) 
Thread[id=24791, name=zkCallback-5253-thread-2, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   10) 
Thread[id=24793, 
name=OverseerStateUpdate-99273183823986698-127.0.0.1:41375_-n_0000000001, 
state=TIMED_WAITING, group=Overseer state updater.]         at 
java.base@10-ea/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.getChildren(SolrZkClient.java:327)
         at 
app//org.apache.solr.common.cloud.ZkStateReader.refreshLiveNodes(ZkStateReader.java:673)
         at 
app//org.apache.solr.common.cloud.ZkStateReader.forciblyRefreshAllClusterStateSlow(ZkStateReader.java:319)
         at 
app//org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:155)  
       at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   11) 
Thread[id=24756, name=qtp1612914187-24756, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         
at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)   
      at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   12) 
Thread[id=24758, 
name=qtp1612914187-24758-acceptor-0@4cf97ec-ServerConnector@e82eafa{SSL,[ssl, 
http/1.1]}{127.0.0.1:41375}, state=RUNNABLE, group=TGRP-TestRebalanceLeaders]   
      at java.base@10-ea/sun.nio.ch.ServerSocketChannelImpl.accept0(Native 
Method)         at 
java.base@10-ea/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:424)
         at 
java.base@10-ea/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:252)
         at 
app//org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:371)  
       at 
app//org.eclipse.jetty.server.AbstractConnector$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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   13) 
Thread[id=24797, name=zkCallback-5253-thread-4, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   14) 
Thread[id=24798, name=zkCallback-5253-thread-5, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   15) 
Thread[id=24794, 
name=OverseerCollectionConfigSetProcessor-99273183823986698-127.0.0.1:41375_-n_0000000001,
 state=TIMED_WAITING, group=Overseer collection creation process.]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
         at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
app//org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:339)   
      at 
app//org.apache.solr.cloud.OverseerTaskProcessor.amILeader(OverseerTaskProcessor.java:387)
         at 
app//org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:149)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   16) 
Thread[id=24761, name=qtp1612914187-24761, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         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$2.run(QueuedThreadPool.java:626)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   17) 
Thread[id=24771, 
name=TEST-TestRebalanceLeaders.test-seed#[962A0DF62C9C9E08]-SendThread(127.0.0.1:40201),
 state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:101)
         at 
app//org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:997)
         at 
app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)   18) 
Thread[id=24796, name=zkCallback-5253-thread-3, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   19) 
Thread[id=24760, name=qtp1612914187-24760, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         
at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)   
      at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   20) 
Thread[id=24772, 
name=TEST-TestRebalanceLeaders.test-seed#[962A0DF62C9C9E08]-EventThread, 
state=WAITING, group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)   21) 
Thread[id=24759, name=qtp1612914187-24759, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         
at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)   
      at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   22) 
Thread[id=24757, name=qtp1612914187-24757, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         
at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)   
      at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   23) 
Thread[id=24783, name=searcherExecutor-8720-thread-1, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   24) 
Thread[id=24767, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   25) 
Thread[id=24780, name=Scheduler-613947749, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 25 threads leaked from 
SUITE scope at org.apache.solr.cloud.TestRebalanceLeaders: 
   1) Thread[id=24773, name=zkConnectionManagerCallback-5254-thread-1, 
state=WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   2) Thread[id=24778, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   3) Thread[id=24766, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   4) Thread[id=24754, name=qtp1612914187-24754, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.solr.common.cloud.ZkStateReader.getLeaderRetry(ZkStateReader.java:767)
        at 
app//org.apache.solr.common.cloud.ZkStateReader.getLeaderUrl(ZkStateReader.java:736)
        at 
app//org.apache.solr.cloud.ZkController.getLeader(ZkController.java:1178)
        at 
app//org.apache.solr.cloud.ZkController.register(ZkController.java:1079)
        at 
app//org.apache.solr.cloud.ZkController.register(ZkController.java:1014)
        at 
app//org.apache.solr.core.ZkContainer.lambda$registerInZk$0(ZkContainer.java:181)
        at 
app//org.apache.solr.core.ZkContainer$$Lambda$416/889793132.run(Unknown Source)
        at 
app//org.apache.solr.core.ZkContainer.registerInZk(ZkContainer.java:208)
        at 
app//org.apache.solr.core.CoreContainer.registerCore(CoreContainer.java:892)
        at 
app//org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1053)
        at 
app//org.apache.solr.core.CoreContainer.create(CoreContainer.java:954)
        at 
app//org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:91)
        at 
app//org.apache.solr.handler.admin.CoreAdminOperation$$Lambda$272/1361978596.execute(Unknown
 Source)
        at 
app//org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:384)
        at 
app//org.apache.solr.handler.admin.CoreAdminHandler$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.ssl.SslConnection.onFillable(SslConnection.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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   5) Thread[id=24776, name=Thread-5715, state=WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Object.wait(Native Method)
        at java.base@10-ea/java.lang.Object.wait(Object.java:328)
        at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
   6) Thread[id=24762, 
name=org.eclipse.jetty.server.session.HashSessionManager@3578f4e3Timer, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   7) Thread[id=24795, 
name=OverseerAutoScalingTriggerThread-99273183823986698-127.0.0.1:41375_-n_0000000001,
 state=TIMED_WAITING, group=Overseer autoscaling triggers]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
app//org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:339)
        at 
app//org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:173)
        at 
app//org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:74)
        at 
app//org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:117)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   8) Thread[id=24755, name=qtp1612914187-24755, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        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$2.run(QueuedThreadPool.java:626)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   9) Thread[id=24791, name=zkCallback-5253-thread-2, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  10) Thread[id=24793, 
name=OverseerStateUpdate-99273183823986698-127.0.0.1:41375_-n_0000000001, 
state=TIMED_WAITING, group=Overseer state updater.]
        at java.base@10-ea/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.getChildren(SolrZkClient.java:327)
        at 
app//org.apache.solr.common.cloud.ZkStateReader.refreshLiveNodes(ZkStateReader.java:673)
        at 
app//org.apache.solr.common.cloud.ZkStateReader.forciblyRefreshAllClusterStateSlow(ZkStateReader.java:319)
        at 
app//org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:155)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  11) Thread[id=24756, name=qtp1612914187-24756, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  12) Thread[id=24758, 
name=qtp1612914187-24758-acceptor-0@4cf97ec-ServerConnector@e82eafa{SSL,[ssl, 
http/1.1]}{127.0.0.1:41375}, state=RUNNABLE, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.ServerSocketChannelImpl.accept0(Native 
Method)
        at 
java.base@10-ea/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:424)
        at 
java.base@10-ea/sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:252)
        at 
app//org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:371)
        at 
app//org.eclipse.jetty.server.AbstractConnector$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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  13) Thread[id=24797, name=zkCallback-5253-thread-4, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  14) Thread[id=24798, name=zkCallback-5253-thread-5, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  15) Thread[id=24794, 
name=OverseerCollectionConfigSetProcessor-99273183823986698-127.0.0.1:41375_-n_0000000001,
 state=TIMED_WAITING, group=Overseer collection creation process.]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
app//org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:339)
        at 
app//org.apache.solr.cloud.OverseerTaskProcessor.amILeader(OverseerTaskProcessor.java:387)
        at 
app//org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:149)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  16) Thread[id=24761, name=qtp1612914187-24761, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        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$2.run(QueuedThreadPool.java:626)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  17) Thread[id=24771, 
name=TEST-TestRebalanceLeaders.test-seed#[962A0DF62C9C9E08]-SendThread(127.0.0.1:40201),
 state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:101)
        at 
app//org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:997)
        at 
app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)
  18) Thread[id=24796, name=zkCallback-5253-thread-3, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  19) Thread[id=24760, name=qtp1612914187-24760, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  20) Thread[id=24772, 
name=TEST-TestRebalanceLeaders.test-seed#[962A0DF62C9C9E08]-EventThread, 
state=WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)
  21) Thread[id=24759, name=qtp1612914187-24759, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  22) Thread[id=24757, name=qtp1612914187-24757, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:265)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  23) Thread[id=24783, name=searcherExecutor-8720-thread-1, state=WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  24) Thread[id=24767, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  25) Thread[id=24780, name=Scheduler-613947749, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
        at __randomizedtesting.SeedInfo.seed([962A0DF62C9C9E08]:0)


FAILED:  junit.framework.TestSuite.org.apache.solr.cloud.TestRebalanceLeaders

Error Message:
There are still zombie threads that couldn't be terminated:    1) 
Thread[id=24773, name=zkConnectionManagerCallback-5254-thread-1, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    2) 
Thread[id=24771, 
name=TEST-TestRebalanceLeaders.test-seed#[962A0DF62C9C9E08]-SendThread(127.0.0.1:40201),
 state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/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)    3) 
Thread[id=24796, name=zkCallback-5253-thread-3, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    4) 
Thread[id=24760, name=qtp1612914187-24760, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.interrupt(Native Method)         
at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:313)
         at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:206) 
        at 
java.base@10-ea/java.nio.channels.spi.AbstractSelector$1.interrupt(AbstractSelector.java:213)
         at 
java.base@10-ea/java.nio.channels.spi.AbstractSelector.begin(AbstractSelector.java:219)
         at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:91)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    5) 
Thread[id=24776, name=Thread-5715, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/java.lang.Object.wait(Native Method)         at 
java.base@10-ea/java.lang.Object.wait(Object.java:328)         at 
app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)    6) 
Thread[id=24762, 
name=org.eclipse.jetty.server.session.HashSessionManager@3578f4e3Timer, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    7) 
Thread[id=24757, name=qtp1612914187-24757, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:89)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    8) 
Thread[id=24783, name=searcherExecutor-8720-thread-1, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    9) 
Thread[id=24791, name=zkCallback-5253-thread-2, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   10) 
Thread[id=24756, name=qtp1612914187-24756, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/sun.nio.ch.IOUtil.drain(Native Method)         at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:103)
         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)   
      at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)  
       at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104) 
        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$2.run(QueuedThreadPool.java:589)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   11) 
Thread[id=24797, name=zkCallback-5253-thread-4, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   12) 
Thread[id=24780, name=Scheduler-613947749, state=WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1170)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   13) 
Thread[id=24798, name=zkCallback-5253-thread-5, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
threads that couldn't be terminated:
   1) Thread[id=24773, name=zkConnectionManagerCallback-5254-thread-1, 
state=WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   2) Thread[id=24771, 
name=TEST-TestRebalanceLeaders.test-seed#[962A0DF62C9C9E08]-SendThread(127.0.0.1:40201),
 state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/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)
   3) Thread[id=24796, name=zkCallback-5253-thread-3, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   4) Thread[id=24760, name=qtp1612914187-24760, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.EPollArrayWrapper.interrupt(Native Method)
        at 
java.base@10-ea/sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:313)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:206)
        at 
java.base@10-ea/java.nio.channels.spi.AbstractSelector$1.interrupt(AbstractSelector.java:213)
        at 
java.base@10-ea/java.nio.channels.spi.AbstractSelector.begin(AbstractSelector.java:219)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:91)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   5) Thread[id=24776, name=Thread-5715, state=WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/java.lang.Object.wait(Native Method)
        at java.base@10-ea/java.lang.Object.wait(Object.java:328)
        at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
   6) Thread[id=24762, 
name=org.eclipse.jetty.server.session.HashSessionManager@3578f4e3Timer, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   7) Thread[id=24757, name=qtp1612914187-24757, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:89)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        at 
app//org.eclipse.jetty.io.ManagedSelector$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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   8) Thread[id=24783, name=searcherExecutor-8720-thread-1, state=WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   9) Thread[id=24791, name=zkCallback-5253-thread-2, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  10) Thread[id=24756, name=qtp1612914187-24756, state=RUNNABLE, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/sun.nio.ch.IOUtil.drain(Native Method)
        at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:103)
        at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
        at java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
        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$2.run(QueuedThreadPool.java:589)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  11) Thread[id=24797, name=zkCallback-5253-thread-4, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  12) Thread[id=24780, name=Scheduler-613947749, state=WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1170)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  13) Thread[id=24798, name=zkCallback-5253-thread-5, state=TIMED_WAITING, 
group=TGRP-TestRebalanceLeaders]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
        at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
        at __randomizedtesting.SeedInfo.seed([962A0DF62C9C9E08]:0)


FAILED:  org.apache.solr.cloud.ShardSplitTest.test

Error Message:
Timeout occured while waiting response from server at: 
http://127.0.0.1:39017/drdzc

Stack Trace:
org.apache.solr.client.solrj.SolrServerException: Timeout occured while waiting 
response from server at: http://127.0.0.1:39017/drdzc
        at 
__randomizedtesting.SeedInfo.seed([962A0DF62C9C9E08:1E7E322C8260F3F0]:0)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:654)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:255)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:244)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.doRequest(LBHttpSolrClient.java:483)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(LBHttpSolrClient.java:413)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.sendRequest(CloudSolrClient.java:1104)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:884)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:817)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:194)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:211)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.createServers(AbstractFullDistribZkTestBase.java:320)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:991)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:968)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:943)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:829)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:879)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:890)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: java.net.SocketTimeoutException: Read timed out
        at java.base/java.net.SocketInputStream.socketRead0(Native Method)
        at 
java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
        at java.base/java.net.SocketInputStream.read(SocketInputStream.java:171)
        at java.base/java.net.SocketInputStream.read(SocketInputStream.java:141)
        at 
org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)
        at 
org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)
        at 
org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:282)
        at 
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:138)
        at 
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
        at 
org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
        at 
org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
        at 
org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:165)
        at 
org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
        at 
org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
        at 
org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
        at 
org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
        at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
        at 
org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
        at 
org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
        at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
        at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:542)
        ... 42 more


FAILED:  org.apache.solr.cloud.TestRebalanceLeaders.test

Error Message:
Timeout occured while waiting response from server at: https://127.0.0.1:33983

Stack Trace:
org.apache.solr.client.solrj.SolrServerException: Timeout occured while waiting 
response from server at: https://127.0.0.1:33983
        at 
__randomizedtesting.SeedInfo.seed([962A0DF62C9C9E08:1E7E322C8260F3F0]:0)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:654)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:255)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:244)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.doRequest(LBHttpSolrClient.java:483)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(LBHttpSolrClient.java:413)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.sendRequest(CloudSolrClient.java:1104)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:884)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:817)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:194)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:211)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.createJettys(AbstractFullDistribZkTestBase.java:423)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.createServers(AbstractFullDistribZkTestBase.java:339)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:991)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:968)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
        at com.carrotsearch.randomizedtesting.Rand

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

it4]    >         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >    7) Thread[id=24757, name=qtp1612914187-24757, 
state=RUNNABLE, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:89)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
   [junit4]    >         at 
app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)
   [junit4]    >         at 
app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)
   [junit4]    >         at 
app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >    8) Thread[id=24783, name=searcherExecutor-8720-thread-1, 
state=WAITING, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >    9) Thread[id=24791, name=zkCallback-5253-thread-2, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >   10) Thread[id=24756, name=qtp1612914187-24756, 
state=RUNNABLE, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at java.base@10-ea/sun.nio.ch.IOUtil.drain(Native 
Method)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:103)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:89)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:100)
   [junit4]    >         at 
java.base@10-ea/sun.nio.ch.SelectorImpl.select(SelectorImpl.java:104)
   [junit4]    >         at 
app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:243)
   [junit4]    >         at 
app//org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:191)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:249)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.execute(ExecuteProduceConsume.java:100)
   [junit4]    >         at 
app//org.eclipse.jetty.io.ManagedSelector.run(ManagedSelector.java:147)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
   [junit4]    >         at 
app//org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >   11) Thread[id=24797, name=zkCallback-5253-thread-4, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >   12) Thread[id=24780, name=Scheduler-613947749, 
state=WAITING, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1170)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >   13) Thread[id=24798, name=zkCallback-5253-thread-5, 
state=TIMED_WAITING, group=TGRP-TestRebalanceLeaders]
   [junit4]    >         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:462)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:361)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:937)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1060)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1121)
   [junit4]    >         at 
java.base@10-ea/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   [junit4]    >         at 
java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([962A0DF62C9C9E08]:0)
   [junit4] Completed [667/765 (2!)] on J1 in 627.86s, 1 test, 3 errors <<< 
FAILURES!

[...truncated 41113 lines...]
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