Build: https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/21237/
Java: 64bit/jdk-10-ea+37 -XX:-UseCompressedOops -XX:+UseConcMarkSweepGC

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

Error Message:
SolrCore.getOpenCount()==2

Stack Trace:
java.lang.RuntimeException: SolrCore.getOpenCount()==2
        at __randomizedtesting.SeedInfo.seed([5D5A729C72AAC552]:0)
        at org.apache.solr.util.TestHarness.close(TestHarness.java:379)
        at org.apache.solr.SolrTestCaseJ4.deleteCore(SolrTestCaseJ4.java:792)
        at 
org.apache.solr.cloud.AbstractZkTestCase.azt_afterClass(AbstractZkTestCase.java:147)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1737)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:897)
        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)


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

Error Message:
SolrCore.getOpenCount()==2

Stack Trace:
java.lang.RuntimeException: SolrCore.getOpenCount()==2
        at __randomizedtesting.SeedInfo.seed([5D5A729C72AAC552]:0)
        at org.apache.solr.util.TestHarness.close(TestHarness.java:379)
        at org.apache.solr.SolrTestCaseJ4.deleteCore(SolrTestCaseJ4.java:792)
        at 
org.apache.solr.SolrTestCaseJ4.teardownTestCases(SolrTestCaseJ4.java:288)
        at jdk.internal.reflect.GeneratedMethodAccessor104.invoke(Unknown 
Source)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1737)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:897)
        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)


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

Error Message:
28 threads leaked from SUITE scope at org.apache.solr.cloud.BasicZkTest:     1) 
Thread[id=22362, name=SessionTracker, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at java.base@10-ea/java.lang.Object.wait(Native 
Method)         at 
app//org.apache.zookeeper.server.SessionTrackerImpl.run(SessionTrackerImpl.java:146)
    2) Thread[id=22360, name=Thread-8621, state=WAITING, 
group=TGRP-BasicZkTest]         at java.base@10-ea/java.lang.Object.wait(Native 
Method)         at java.base@10-ea/java.lang.Thread.join(Thread.java:1353)      
   at java.base@10-ea/java.lang.Thread.join(Thread.java:1427)         at 
app//org.apache.zookeeper.server.NIOServerCnxnFactory.join(NIOServerCnxnFactory.java:297)
         at 
app//org.apache.solr.cloud.ZkTestServer$ZKServerMain.runFromConfig(ZkTestServer.java:310)
         at 
app//org.apache.solr.cloud.ZkTestServer$2.run(ZkTestServer.java:491)    3) 
Thread[id=22366, name=zkCallback-4996-thread-7, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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=22345, name=zkCallback-4996-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    5) 
Thread[id=22365, name=zkCallback-4996-thread-6, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)    6) 
Thread[id=22338, 
name=SUITE-BasicZkTest-seed#[5D5A729C72AAC552]-worker-SendThread(127.0.0.1:38649),
 state=RUNNABLE, group=TGRP-BasicZkTest]         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 
app//org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
         at 
app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)    7) 
Thread[id=22347, name=ScheduledTrigger-6405-thread-2, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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)    8) 
Thread[id=22334, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    9) 
Thread[id=22353, name=searcherExecutor-6410-thread-1, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   10) 
Thread[id=22339, 
name=SUITE-BasicZkTest-seed#[5D5A729C72AAC552]-worker-EventThread, 
state=WAITING, group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)   11) 
Thread[id=22364, name=ProcessThread(sid:0 cport:38649):, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
         at 
app//org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:122)
   12) Thread[id=22346, name=ScheduledTrigger-6405-thread-1, 
state=TIMED_WAITING, group=TGRP-BasicZkTest]         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)   13) 
Thread[id=22354, name=coreZkRegister-6400-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   14) 
Thread[id=22355, name=zkCallback-4996-thread-2, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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=22357, name=zkCallback-4996-thread-4, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   16) 
Thread[id=22358, name=zkCallback-4996-thread-5, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)   17) 
Thread[id=22356, name=zkCallback-4996-thread-3, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   18) 
Thread[id=22343, 
name=OverseerCollectionConfigSetProcessor-99311585559969795-88.99.242.108:8983_-n_0000000000,
 state=TIMED_WAITING, group=Overseer collection creation process.]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         at 
app//org.apache.solr.cloud.ZkDistributedQueue.peekElements(ZkDistributedQueue.java:463)
         at 
app//org.apache.solr.cloud.OverseerTaskQueue.peekTopN(OverseerTaskQueue.java:235)
         at 
app//org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:228)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   19) 
Thread[id=22350, name=watches-4998-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   20) 
Thread[id=22344, 
name=OverseerAutoScalingTriggerThread-99311585559969795-88.99.242.108:8983_-n_0000000000,
 state=WAITING, group=Overseer autoscaling triggers]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
app//org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:166)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   21) 
Thread[id=22340, name=zkConnectionManagerCallback-4997-thread-1, state=WAITING, 
group=TGRP-BasicZkTest]         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)   22) 
Thread[id=22349, name=Thread-8620, state=WAITING, group=TGRP-BasicZkTest]       
  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)   23) 
Thread[id=22359, name=ScheduledTrigger-6405-thread-4, state=WAITING, 
group=TGRP-BasicZkTest]         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:1177)
         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)   24) 
Thread[id=22333, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   25) 
Thread[id=22351, name=ScheduledTrigger-6405-thread-3, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   26) 
Thread[id=22341, 
name=OverseerStateUpdate-99311585559969795-88.99.242.108:8983_-n_0000000000, 
state=TIMED_WAITING, group=Overseer state updater.]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
         at 
app//org.apache.solr.cloud.ZkDistributedQueue.peekElements(ZkDistributedQueue.java:463)
         at 
app//org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:204)  
       at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   27) 
Thread[id=22342, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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)   28) 
Thread[id=22361, name=NIOServerCxn.Factory:0.0.0.0/0.0.0.0:38649, 
state=RUNNABLE, group=TGRP-BasicZkTest]         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 
app//org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:173)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 28 threads leaked from 
SUITE scope at org.apache.solr.cloud.BasicZkTest: 
   1) Thread[id=22362, name=SessionTracker, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/java.lang.Object.wait(Native Method)
        at 
app//org.apache.zookeeper.server.SessionTrackerImpl.run(SessionTrackerImpl.java:146)
   2) Thread[id=22360, name=Thread-8621, state=WAITING, group=TGRP-BasicZkTest]
        at java.base@10-ea/java.lang.Object.wait(Native Method)
        at java.base@10-ea/java.lang.Thread.join(Thread.java:1353)
        at java.base@10-ea/java.lang.Thread.join(Thread.java:1427)
        at 
app//org.apache.zookeeper.server.NIOServerCnxnFactory.join(NIOServerCnxnFactory.java:297)
        at 
app//org.apache.solr.cloud.ZkTestServer$ZKServerMain.runFromConfig(ZkTestServer.java:310)
        at app//org.apache.solr.cloud.ZkTestServer$2.run(ZkTestServer.java:491)
   3) Thread[id=22366, name=zkCallback-4996-thread-7, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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=22345, name=zkCallback-4996-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   5) Thread[id=22365, name=zkCallback-4996-thread-6, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)
   6) Thread[id=22338, 
name=SUITE-BasicZkTest-seed#[5D5A729C72AAC552]-worker-SendThread(127.0.0.1:38649),
 state=RUNNABLE, group=TGRP-BasicZkTest]
        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 
app//org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
        at 
app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
   7) Thread[id=22347, name=ScheduledTrigger-6405-thread-2, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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)
   8) Thread[id=22334, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   9) Thread[id=22353, name=searcherExecutor-6410-thread-1, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  10) Thread[id=22339, 
name=SUITE-BasicZkTest-seed#[5D5A729C72AAC552]-worker-EventThread, 
state=WAITING, group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)
  11) Thread[id=22364, name=ProcessThread(sid:0 cport:38649):, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
app//org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:122)
  12) Thread[id=22346, name=ScheduledTrigger-6405-thread-1, 
state=TIMED_WAITING, group=TGRP-BasicZkTest]
        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)
  13) Thread[id=22354, name=coreZkRegister-6400-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  14) Thread[id=22355, name=zkCallback-4996-thread-2, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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=22357, name=zkCallback-4996-thread-4, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  16) Thread[id=22358, name=zkCallback-4996-thread-5, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)
  17) Thread[id=22356, name=zkCallback-4996-thread-3, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  18) Thread[id=22343, 
name=OverseerCollectionConfigSetProcessor-99311585559969795-88.99.242.108:8983_-n_0000000000,
 state=TIMED_WAITING, group=Overseer collection creation process.]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        at 
app//org.apache.solr.cloud.ZkDistributedQueue.peekElements(ZkDistributedQueue.java:463)
        at 
app//org.apache.solr.cloud.OverseerTaskQueue.peekTopN(OverseerTaskQueue.java:235)
        at 
app//org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:228)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  19) Thread[id=22350, name=watches-4998-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  20) Thread[id=22344, 
name=OverseerAutoScalingTriggerThread-99311585559969795-88.99.242.108:8983_-n_0000000000,
 state=WAITING, group=Overseer autoscaling triggers]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
app//org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:166)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  21) Thread[id=22340, name=zkConnectionManagerCallback-4997-thread-1, 
state=WAITING, group=TGRP-BasicZkTest]
        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)
  22) Thread[id=22349, name=Thread-8620, state=WAITING, group=TGRP-BasicZkTest]
        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)
  23) Thread[id=22359, name=ScheduledTrigger-6405-thread-4, state=WAITING, 
group=TGRP-BasicZkTest]
        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:1177)
        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)
  24) Thread[id=22333, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  25) Thread[id=22351, name=ScheduledTrigger-6405-thread-3, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  26) Thread[id=22341, 
name=OverseerStateUpdate-99311585559969795-88.99.242.108:8983_-n_0000000000, 
state=TIMED_WAITING, group=Overseer state updater.]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2117)
        at 
app//org.apache.solr.cloud.ZkDistributedQueue.peekElements(ZkDistributedQueue.java:463)
        at 
app//org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:204)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  27) Thread[id=22342, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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)
  28) Thread[id=22361, name=NIOServerCxn.Factory:0.0.0.0/0.0.0.0:38649, 
state=RUNNABLE, group=TGRP-BasicZkTest]
        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 
app//org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:173)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
        at __randomizedtesting.SeedInfo.seed([5D5A729C72AAC552]:0)


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

Error Message:
There are still zombie threads that couldn't be terminated:    1) 
Thread[id=22366, name=zkCallback-4996-thread-7, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    2) 
Thread[id=22345, name=zkCallback-4996-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)    3) 
Thread[id=22365, name=zkCallback-4996-thread-6, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    4) 
Thread[id=22338, 
name=SUITE-BasicZkTest-seed#[5D5A729C72AAC552]-worker-SendThread(127.0.0.1:38649),
 state=TIMED_WAITING, group=TGRP-BasicZkTest]         at 
java.base@10-ea/java.lang.Thread.sleep(Native Method)         at 
app//org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:101)
         at 
app//org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:997)
         at 
app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)    5) 
Thread[id=22347, name=ScheduledTrigger-6405-thread-2, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    6) 
Thread[id=22340, name=zkConnectionManagerCallback-4997-thread-1, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    7) 
Thread[id=22353, name=searcherExecutor-6410-thread-1, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)    8) 
Thread[id=22349, name=Thread-8620, state=WAITING, group=TGRP-BasicZkTest]       
  at java.base@10-ea/java.lang.Object.wait(Native Method)         at 
java.base@10-ea/java.lang.Object.wait(Object.java:328)         at 
app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)    9) 
Thread[id=22346, name=ScheduledTrigger-6405-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   10) 
Thread[id=22354, name=coreZkRegister-6400-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)   11) 
Thread[id=22355, name=zkCallback-4996-thread-2, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   12) 
Thread[id=22357, name=zkCallback-4996-thread-4, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)   13) 
Thread[id=22359, name=ScheduledTrigger-6405-thread-4, state=WAITING, 
group=TGRP-BasicZkTest]         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:1177)
         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)   14) 
Thread[id=22358, name=zkCallback-4996-thread-5, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   15) 
Thread[id=22351, name=ScheduledTrigger-6405-thread-3, state=WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
         at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
         at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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$Worker.run(ThreadPoolExecutor.java:635)
         at java.base@10-ea/java.lang.Thread.run(Thread.java:844)   16) 
Thread[id=22356, name=zkCallback-4996-thread-3, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         at 
java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)         at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
         at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)   17) 
Thread[id=22350, name=watches-4998-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]         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=22366, name=zkCallback-4996-thread-7, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   2) Thread[id=22345, name=zkCallback-4996-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)
   3) Thread[id=22365, name=zkCallback-4996-thread-6, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   4) Thread[id=22338, 
name=SUITE-BasicZkTest-seed#[5D5A729C72AAC552]-worker-SendThread(127.0.0.1:38649),
 state=TIMED_WAITING, group=TGRP-BasicZkTest]
        at java.base@10-ea/java.lang.Thread.sleep(Native Method)
        at 
app//org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:101)
        at 
app//org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:997)
        at 
app//org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)
   5) Thread[id=22347, name=ScheduledTrigger-6405-thread-2, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   6) Thread[id=22340, name=zkConnectionManagerCallback-4997-thread-1, 
state=WAITING, group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   7) Thread[id=22353, name=searcherExecutor-6410-thread-1, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
   8) Thread[id=22349, name=Thread-8620, state=WAITING, group=TGRP-BasicZkTest]
        at java.base@10-ea/java.lang.Object.wait(Native Method)
        at java.base@10-ea/java.lang.Object.wait(Object.java:328)
        at app//org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
   9) Thread[id=22346, name=ScheduledTrigger-6405-thread-1, 
state=TIMED_WAITING, group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  10) Thread[id=22354, name=coreZkRegister-6400-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)
  11) Thread[id=22355, name=zkCallback-4996-thread-2, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  12) Thread[id=22357, name=zkCallback-4996-thread-4, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)
  13) Thread[id=22359, name=ScheduledTrigger-6405-thread-4, state=WAITING, 
group=TGRP-BasicZkTest]
        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:1177)
        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)
  14) Thread[id=22358, name=zkCallback-4996-thread-5, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  15) Thread[id=22351, name=ScheduledTrigger-6405-thread-3, state=WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
        at 
java.base@10-ea/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2075)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
        at 
java.base@10-ea/java.util.concurrent.ScheduledThreadPoolExecutor$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$Worker.run(ThreadPoolExecutor.java:635)
        at java.base@10-ea/java.lang.Thread.run(Thread.java:844)
  16) Thread[id=22356, name=zkCallback-4996-thread-3, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        at java.base@10-ea/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@10-ea/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
        at 
java.base@10-ea/java.util.concurrent.SynchronousQueue$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)
  17) Thread[id=22350, name=watches-4998-thread-1, state=TIMED_WAITING, 
group=TGRP-BasicZkTest]
        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([5D5A729C72AAC552]:0)




Build Log:
[...truncated 1779 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/core/test/temp/junit4-J2-20180108_003121_00713852997696129080727.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/core/test/temp/junit4-J0-20180108_003121_0077735051394939779758.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/core/test/temp/junit4-J1-20180108_003121_0067491256172042495352.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 299 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/test-framework/test/temp/junit4-J2-20180108_004001_17414745652816408745782.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/test-framework/test/temp/junit4-J1-20180108_004001_1749894320954943715167.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/test-framework/test/temp/junit4-J0-20180108_004001_1747553407445690629321.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 1057 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/common/test/temp/junit4-J1-20180108_004124_11018240312464908450801.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/common/test/temp/junit4-J2-20180108_004124_1105472357446158525198.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/common/test/temp/junit4-J0-20180108_004124_11084445948686990127.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 219 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/icu/test/temp/junit4-J0-20180108_004307_2795572318583049874821.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 7 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/icu/test/temp/junit4-J2-20180108_004307_28014954656168392763792.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 5 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/icu/test/temp/junit4-J1-20180108_004307_28016714186458213716240.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 244 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/kuromoji/test/temp/junit4-J2-20180108_004320_02411988571160008072841.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 5 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/kuromoji/test/temp/junit4-J0-20180108_004320_0245253087486812405609.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 6 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/kuromoji/test/temp/junit4-J1-20180108_004320_0241295913228877212146.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 154 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/morfologik/test/temp/junit4-J1-20180108_004345_82818125685275954369643.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/morfologik/test/temp/junit4-J2-20180108_004345_82814794529924715433621.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

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   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/morfologik/test/temp/junit4-J0-20180108_004345_8285101213219400272267.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

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/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build/analysis/opennlp/test/temp/junit4-J2-20180108_004350_1048829386755484421959.syserr
   [junit4] >>> JVM J2 emitted u

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

, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-analytics/test/temp/junit4-J1-20180108_014014_48414867399445908399590.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

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   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-analytics/test/temp/junit4-J0-20180108_014014_4842948253404812910853.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

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   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-clustering/test/temp/junit4-J2-20180108_014117_83117778771352916036454.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

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/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-clustering/test/temp/junit4-J1-20180108_014117_8314406366593538850348.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

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   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-clustering/test/temp/junit4-J0-20180108_014117_8319061283956265629537.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

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/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler-extras/test/temp/junit4-J1-20180108_014133_6015529338193775792146.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

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/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler-extras/test/temp/junit4-J0-20180108_014133_60113097048061992278285.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

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/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler/test/temp/junit4-J1-20180108_014141_02514836212926242146226.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler/test/temp/junit4-J0-20180108_014141_02517272883822142708310.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

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   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-dataimporthandler/test/temp/junit4-J2-20180108_014141_02517527814229406349307.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

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/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-cell/test/temp/junit4-J0-20180108_014203_21613518135834094202536.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-cell/test/temp/junit4-J2-20180108_014203_2167071580532977114368.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-cell/test/temp/junit4-J1-20180108_014203_2165210778879516301362.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

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   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-langid/test/temp/junit4-J0-20180108_014213_43211348930482356078655.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-langid/test/temp/junit4-J1-20180108_014213_4327702765029151004215.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 656 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-ltr/test/temp/junit4-J0-20180108_014220_2411710399981739389486.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 6 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-ltr/test/temp/junit4-J1-20180108_014220_2419297619425962198437.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

   [junit4] JVM J2: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-ltr/test/temp/junit4-J2-20180108_014220_24113861850444315808726.syserr
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J2: EOF ----

[...truncated 596 lines...]
   [junit4] JVM J1: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-uima/test/temp/junit4-J1-20180108_014246_1023493173379091643911.syserr
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J1: EOF ----

[...truncated 3 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-uima/test/temp/junit4-J0-20180108_014246_1021009806463710311183.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

[...truncated 548 lines...]
   [junit4] JVM J0: stderr was not empty, see: 
/home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/contrib/solr-velocity/test/temp/junit4-J0-20180108_014257_38410833527645349676463.syserr
   [junit4] >>> JVM J0 emitted unexpected output (verbatim) ----
   [junit4] Java HotSpot(TM) 64-Bit Server VM warning: Option 
UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in 
a future release.
   [junit4] <<< JVM J0: EOF ----

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