Build: https://builds.apache.org/job/Lucene-Solr-Tests-7.3/41/

3 tests failed.
FAILED:  org.apache.solr.cloud.api.collections.TestCollectionAPI.test

Error Message:
Error from server at https://127.0.0.1:34217: KeeperErrorCode = Session expired 
for /overseer/collection-queue-work/qnr-

Stack Trace:
org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error 
from server at https://127.0.0.1:34217: KeeperErrorCode = Session expired for 
/overseer/collection-queue-work/qnr-
        at 
__randomizedtesting.SeedInfo.seed([1A3EF4FEA8212041:926ACB2406DD4DB9]:0)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:643)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:255)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:244)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.doRequest(LBHttpSolrClient.java:483)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(LBHttpSolrClient.java:413)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.sendRequest(CloudSolrClient.java:1105)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:885)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:818)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:194)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:211)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.createJettys(AbstractFullDistribZkTestBase.java:425)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.createServers(AbstractFullDistribZkTestBase.java:341)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:991)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:968)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:943)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:829)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:879)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:890)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
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.lang.Thread.run(Thread.java:748)


FAILED:  
junit.framework.TestSuite.org.apache.solr.cloud.api.collections.TestCollectionAPI

Error Message:
51 threads leaked from SUITE scope at 
org.apache.solr.cloud.api.collections.TestCollectionAPI:     1) 
Thread[id=13855, 
name=zkConnectionManagerCallback-2170-thread-1-processing-n:127.0.0.1:46070_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1054)    2) 
Thread[id=13834, 
name=zkConnectionManagerCallback-2178-thread-1-processing-n:127.0.0.1:34217_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:105)
         at 
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1000)   
      at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1063)   
 3) Thread[id=13752, name=qtp46475805-13752, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)  
       at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)    4) Thread[id=13814, 
name=Scheduler-1068785359, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]   
      at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)    5) Thread[id=13763, 
name=Connection evictor, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]     
    at java.lang.Thread.sleep(Native Method)         at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)    6) Thread[id=13838, 
name=OverseerAutoScalingTriggerThread-72374576079044625-127.0.0.1:34217_-n_0000000003,
 state=WAITING, group=Overseer autoscaling triggers]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:175)
         at java.lang.Thread.run(Thread.java:748)    7) Thread[id=13793, 
name=qtp56914829-13793, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)    8) Thread[id=13753, 
name=qtp46475805-13753-acceptor-0@2389b44-ServerConnector@227b1ff7{SSL,[ssl, 
http/1.1]}{127.0.0.1:46070}, state=RUNNABLE, group=TGRP-TestCollectionAPI]      
   at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)         at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)     
    at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)     
    at 
org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:379)       
  at 
org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:638)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)    9) Thread[id=13810, 
name=Connection evictor, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]     
    at java.lang.Thread.sleep(Native Method)         at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)   10) Thread[id=13837, 
name=OverseerCollectionConfigSetProcessor-72374576079044625-127.0.0.1:34217_-n_0000000003,
 state=TIMED_WAITING, group=Overseer collection creation process.]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)   
      at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)        
 at 
org.apache.solr.cloud.OverseerTaskProcessor.amILeader(OverseerTaskProcessor.java:392)
         at 
org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:193) 
        at java.lang.Thread.run(Thread.java:748)   11) Thread[id=13751, 
name=qtp46475805-13751, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at 
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.io.ManagedSelector$$Lambda$219/634343782.run(Unknown Source)  
       at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   12) Thread[id=13789, 
name=qtp56914829-13789, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at 
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   13) Thread[id=13775, 
name=Connection evictor, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]     
    at java.lang.Thread.sleep(Native Method)         at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)   14) Thread[id=13783, 
name=searcherExecutor-4079-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   15) Thread[id=13780, 
name=Scheduler-1381370883, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]   
      at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   16) Thread[id=13874, 
name=AutoscalingActionExecutor-4092-thread-1-processing-n:127.0.0.1:34217_, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)   
      at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)         
at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.hasData(ZkDistribStateManager.java:58)
         at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers.waitForPendingTasks(ScheduledTriggers.java:388)
         at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers.lambda$null$3(ScheduledTriggers.java:296)
         at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers$$Lambda$522/1682639709.run(Unknown
 Source)         at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)         
at java.util.concurrent.FutureTask.run(FutureTask.java:266)         at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
         at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$119/288271801.run(Unknown
 Source)         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   17) Thread[id=13792, 
name=qtp56914829-13792, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.reservedWait(ReservedThreadExecutor.java:308)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:373)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   18) Thread[id=13805, 
name=zkConnectionManagerCallback-2178-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   19) Thread[id=13788, 
name=qtp56914829-13788-acceptor-0@4835fa6d-ServerConnector@19d534b{SSL,[ssl, 
http/1.1]}{127.0.0.1:34217}, state=RUNNABLE, group=TGRP-TestCollectionAPI]      
   at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)         at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)     
    at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)     
    at 
org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:379)       
  at 
org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:638)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   20) Thread[id=13786, 
name=qtp56914829-13786, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at 
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.io.ManagedSelector$$Lambda$219/634343782.run(Unknown Source)  
       at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   21) Thread[id=13770, 
name=zkConnectionManagerCallback-2165-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   22) Thread[id=13773, 
name=Thread-6569, state=WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Object.wait(Native Method)         at 
java.lang.Object.wait(Object.java:502)         at 
org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)   23) 
Thread[id=13835, 
name=zkConnectionManagerCallback-2178-thread-1-processing-n:127.0.0.1:34217_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)   
24) Thread[id=13785, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at java.lang.Thread.sleep(Native Method)  
       at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)   25) Thread[id=13856, 
name=zkConnectionManagerCallback-2170-thread-1-processing-n:127.0.0.1:46070_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)   
26) Thread[id=13755, name=qtp46475805-13755, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)  
       at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)   27) Thread[id=13861, 
name=ScheduledTrigger-4091-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   28) Thread[id=13790, 
name=qtp56914829-13790, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)   29) Thread[id=13859, 
name=zkConnectionManagerCallback-2165-thread-1-processing-n:127.0.0.1:46070_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:105)
         at 
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1000)   
      at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1063)   
30) Thread[id=13794, name=Scheduler-1258969394, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)  
       at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   31) Thread[id=13846, 
name=zkConnectionManagerCallback-2183-thread-1-processing-n:127.0.0.1:34217_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.ClientCnxnSocketNIO.cleanup(ClientCnxnSocketNIO.java:230)  
       at 
org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1249)        
 at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1173)   32) 
Thread[id=13873, name=ScheduledTrigger-4091-thread-3, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   33) Thread[id=13754, 
name=qtp46475805-13754, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)         at 
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   34) Thread[id=13860, 
name=zkConnectionManagerCallback-2165-thread-1-processing-n:127.0.0.1:46070_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)   
35) Thread[id=13778, name=zkConnectionManagerCallback-2170-thread-1, 
state=WAITING, group=TGRP-TestCollectionAPI]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   36) Thread[id=13836, 
name=OverseerStateUpdate-72374576079044625-127.0.0.1:34217_-n_0000000003, 
state=TIMED_WAITING, group=Overseer state updater.]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)   
      at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)        
 at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.amILeader(Overseer.java:415) 
        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:145)       
  at java.lang.Thread.run(Thread.java:748)   37) Thread[id=13787, 
name=qtp56914829-13787, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)   38) Thread[id=13866, 
name=coreZkRegister-4073-thread-1-processing-n:127.0.0.1:46070_, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)   
      at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)         
at 
org.apache.solr.cloud.ShardLeaderElectionContextBase.runLeaderProcess(ElectionContext.java:177)
         at 
org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:481)
         at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170) 
        at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)    
     at 
org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)        
 at org.apache.solr.cloud.ZkController.joinElection(ZkController.java:1306)     
    at org.apache.solr.cloud.ZkController.register(ZkController.java:1071)      
   at 
org.apache.solr.cloud.ZkController$RegisterCoreAsync.call(ZkController.java:258)
         at java.util.concurrent.FutureTask.run(FutureTask.java:266)         at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
         at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$119/288271801.run(Unknown
 Source)         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   39) Thread[id=13798, 
name=Connection evictor, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]     
    at java.lang.Thread.sleep(Native Method)         at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)   40) Thread[id=13758, 
name=qtp46475805-13758, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)   41) Thread[id=13757, 
name=qtp46475805-13757, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.reservedWait(ReservedThreadExecutor.java:308)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:373)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)   42) Thread[id=13813, 
name=zkConnectionManagerCallback-2183-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   43) Thread[id=13868, 
name=Thread-6579, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)   
      at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:304)         
at org.apache.solr.core.SolrCore.checkStale(SolrCore.java:3008)         at 
org.apache.solr.core.SolrCore.lambda$getConfListener$20(SolrCore.java:2962)     
    at org.apache.solr.core.SolrCore$$Lambda$370/1177292394.run(Unknown Source) 
        at 
org.apache.solr.cloud.ZkController.lambda$fireEventListeners$5(ZkController.java:2665)
         at 
org.apache.solr.cloud.ZkController$$Lambda$571/1745196633.run(Unknown Source)   
      at java.lang.Thread.run(Thread.java:748)   44) Thread[id=13808, 
name=Thread-6578, state=WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Object.wait(Native Method)         at 
java.lang.Object.wait(Object.java:502)         at 
org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)   45) 
Thread[id=13862, name=ScheduledTrigger-4091-thread-2, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at java.lang.Thread.sleep(Native Method)  
       at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)   
      at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
         at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)         
at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.hasData(ZkDistribStateManager.java:58)
         at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger.removeMarker(NodeLostTrigger.java:184)
         at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger.lambda$run$2(NodeLostTrigger.java:163)
         at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger$$Lambda$523/2135942859.accept(Unknown
 Source)         at java.util.ArrayList.forEach(ArrayList.java:1257)         at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger.run(NodeLostTrigger.java:161) 
        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers$TriggerWrapper.run(ScheduledTriggers.java:572)
         at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)         
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)         at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   46) Thread[id=13759, 
name=Scheduler-1248584203, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]   
      at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)   47) Thread[id=13799, 
name=Connection evictor, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]     
    at java.lang.Thread.sleep(Native Method)         at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)   48) Thread[id=13756, 
name=qtp46475805-13756, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)   49) Thread[id=13847, 
name=zkConnectionManagerCallback-2183-thread-1-processing-n:127.0.0.1:34217_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)   
50) Thread[id=13764, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at java.lang.Thread.sleep(Native Method)  
       at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
         at java.lang.Thread.run(Thread.java:748)   51) Thread[id=13791, 
name=qtp56914829-13791, state=TIMED_WAITING, group=TGRP-TestCollectionAPI]      
   at sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)     
    at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663) 
        at java.lang.Thread.run(Thread.java:748)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 51 threads leaked from 
SUITE scope at org.apache.solr.cloud.api.collections.TestCollectionAPI: 
   1) Thread[id=13855, 
name=zkConnectionManagerCallback-2170-thread-1-processing-n:127.0.0.1:46070_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1054)
   2) Thread[id=13834, 
name=zkConnectionManagerCallback-2178-thread-1-processing-n:127.0.0.1:34217_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:105)
        at 
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1000)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1063)
   3) Thread[id=13752, name=qtp46475805-13752, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
   4) Thread[id=13814, name=Scheduler-1068785359, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
   5) Thread[id=13763, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
   6) Thread[id=13838, 
name=OverseerAutoScalingTriggerThread-72374576079044625-127.0.0.1:34217_-n_0000000003,
 state=WAITING, group=Overseer autoscaling triggers]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:175)
        at java.lang.Thread.run(Thread.java:748)
   7) Thread[id=13793, name=qtp56914829-13793, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
   8) Thread[id=13753, 
name=qtp46475805-13753-acceptor-0@2389b44-ServerConnector@227b1ff7{SSL,[ssl, 
http/1.1]}{127.0.0.1:46070}, state=RUNNABLE, group=TGRP-TestCollectionAPI]
        at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
        at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)
        at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)
        at 
org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:379)
        at 
org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:638)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
   9) Thread[id=13810, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
  10) Thread[id=13837, 
name=OverseerCollectionConfigSetProcessor-72374576079044625-127.0.0.1:34217_-n_0000000003,
 state=TIMED_WAITING, group=Overseer collection creation process.]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
        at 
org.apache.solr.cloud.OverseerTaskProcessor.amILeader(OverseerTaskProcessor.java:392)
        at 
org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:193)
        at java.lang.Thread.run(Thread.java:748)
  11) Thread[id=13751, name=qtp46475805-13751, state=RUNNABLE, 
group=TGRP-TestCollectionAPI]
        at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
        at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
        at 
org.eclipse.jetty.io.ManagedSelector$$Lambda$219/634343782.run(Unknown Source)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  12) Thread[id=13789, name=qtp56914829-13789, state=RUNNABLE, 
group=TGRP-TestCollectionAPI]
        at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
        at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  13) Thread[id=13775, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
  14) Thread[id=13783, name=searcherExecutor-4079-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  15) Thread[id=13780, name=Scheduler-1381370883, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  16) Thread[id=13874, 
name=AutoscalingActionExecutor-4092-thread-1-processing-n:127.0.0.1:34217_, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)
        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.hasData(ZkDistribStateManager.java:58)
        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers.waitForPendingTasks(ScheduledTriggers.java:388)
        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers.lambda$null$3(ScheduledTriggers.java:296)
        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers$$Lambda$522/1682639709.run(Unknown
 Source)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$119/288271801.run(Unknown
 Source)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  17) Thread[id=13792, name=qtp56914829-13792, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.reservedWait(ReservedThreadExecutor.java:308)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:373)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  18) Thread[id=13805, name=zkConnectionManagerCallback-2178-thread-1, 
state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  19) Thread[id=13788, 
name=qtp56914829-13788-acceptor-0@4835fa6d-ServerConnector@19d534b{SSL,[ssl, 
http/1.1]}{127.0.0.1:34217}, state=RUNNABLE, group=TGRP-TestCollectionAPI]
        at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
        at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)
        at 
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)
        at 
org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:379)
        at 
org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:638)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  20) Thread[id=13786, name=qtp56914829-13786, state=RUNNABLE, 
group=TGRP-TestCollectionAPI]
        at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
        at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
        at 
org.eclipse.jetty.io.ManagedSelector$$Lambda$219/634343782.run(Unknown Source)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  21) Thread[id=13770, name=zkConnectionManagerCallback-2165-thread-1, 
state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  22) Thread[id=13773, name=Thread-6569, state=WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:502)
        at org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
  23) Thread[id=13835, 
name=zkConnectionManagerCallback-2178-thread-1-processing-n:127.0.0.1:34217_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)
  24) Thread[id=13785, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
  25) Thread[id=13856, 
name=zkConnectionManagerCallback-2170-thread-1-processing-n:127.0.0.1:46070_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)
  26) Thread[id=13755, name=qtp46475805-13755, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
  27) Thread[id=13861, name=ScheduledTrigger-4091-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  28) Thread[id=13790, name=qtp56914829-13790, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
  29) Thread[id=13859, 
name=zkConnectionManagerCallback-2165-thread-1-processing-n:127.0.0.1:46070_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:105)
        at 
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1000)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1063)
  30) Thread[id=13794, name=Scheduler-1258969394, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  31) Thread[id=13846, 
name=zkConnectionManagerCallback-2183-thread-1-processing-n:127.0.0.1:34217_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.zookeeper.ClientCnxnSocketNIO.cleanup(ClientCnxnSocketNIO.java:230)
        at 
org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1249)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1173)
  32) Thread[id=13873, name=ScheduledTrigger-4091-thread-3, state=WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  33) Thread[id=13754, name=qtp46475805-13754, state=RUNNABLE, 
group=TGRP-TestCollectionAPI]
        at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
        at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
        at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
        at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  34) Thread[id=13860, 
name=zkConnectionManagerCallback-2165-thread-1-processing-n:127.0.0.1:46070_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)
  35) Thread[id=13778, name=zkConnectionManagerCallback-2170-thread-1, 
state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  36) Thread[id=13836, 
name=OverseerStateUpdate-72374576079044625-127.0.0.1:34217_-n_0000000003, 
state=TIMED_WAITING, group=Overseer state updater.]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.amILeader(Overseer.java:415)
        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:145)
        at java.lang.Thread.run(Thread.java:748)
  37) Thread[id=13787, name=qtp56914829-13787, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
  38) Thread[id=13866, 
name=coreZkRegister-4073-thread-1-processing-n:127.0.0.1:46070_, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)
        at 
org.apache.solr.cloud.ShardLeaderElectionContextBase.runLeaderProcess(ElectionContext.java:177)
        at 
org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:481)
        at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170)
        at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)
        at 
org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)
        at 
org.apache.solr.cloud.ZkController.joinElection(ZkController.java:1306)
        at org.apache.solr.cloud.ZkController.register(ZkController.java:1071)
        at 
org.apache.solr.cloud.ZkController$RegisterCoreAsync.call(ZkController.java:258)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$119/288271801.run(Unknown
 Source)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  39) Thread[id=13798, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
  40) Thread[id=13758, name=qtp46475805-13758, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
  41) Thread[id=13757, name=qtp46475805-13757, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.reservedWait(ReservedThreadExecutor.java:308)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:373)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
        at java.lang.Thread.run(Thread.java:748)
  42) Thread[id=13813, name=zkConnectionManagerCallback-2183-thread-1, 
state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  43) Thread[id=13868, name=Thread-6579, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:304)
        at org.apache.solr.core.SolrCore.checkStale(SolrCore.java:3008)
        at 
org.apache.solr.core.SolrCore.lambda$getConfListener$20(SolrCore.java:2962)
        at org.apache.solr.core.SolrCore$$Lambda$370/1177292394.run(Unknown 
Source)
        at 
org.apache.solr.cloud.ZkController.lambda$fireEventListeners$5(ZkController.java:2665)
        at 
org.apache.solr.cloud.ZkController$$Lambda$571/1745196633.run(Unknown Source)
        at java.lang.Thread.run(Thread.java:748)
  44) Thread[id=13808, name=Thread-6578, state=WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:502)
        at org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
  45) Thread[id=13862, name=ScheduledTrigger-4091-thread-2, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:111)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:70)
        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)
        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.hasData(ZkDistribStateManager.java:58)
        at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger.removeMarker(NodeLostTrigger.java:184)
        at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger.lambda$run$2(NodeLostTrigger.java:163)
        at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger$$Lambda$523/2135942859.accept(Unknown
 Source)
        at java.util.ArrayList.forEach(ArrayList.java:1257)
        at 
org.apache.solr.cloud.autoscaling.NodeLostTrigger.run(NodeLostTrigger.java:161)
        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers$TriggerWrapper.run(ScheduledTriggers.java:572)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  46) Thread[id=13759, name=Scheduler-1248584203, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  47) Thread[id=13799, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
  48) Thread[id=13756, name=qtp46475805-13756, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
  49) Thread[id=13847, 
name=zkConnectionManagerCallback-2183-thread-1-processing-n:127.0.0.1:34217_-EventThread,
 state=WAITING, group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:502)
  50) Thread[id=13764, name=Connection evictor, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.http.impl.client.IdleConnectionEvictor$1.run(IdleConnectionEvictor.java:66)
        at java.lang.Thread.run(Thread.java:748)
  51) Thread[id=13791, name=qtp56914829-13791, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
        at 
org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:392)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:600)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.access$800(QueuedThreadPool.java:49)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:663)
        at java.lang.Thread.run(Thread.java:748)
        at __randomizedtesting.SeedInfo.seed([1A3EF4FEA8212041]:0)


FAILED:  
junit.framework.TestSuite.org.apache.solr.cloud.api.collections.TestCollectionAPI

Error Message:
There are still zombie threads that couldn't be terminated:    1) 
Thread[id=13855, 
name=zkConnectionManagerCallback-2170-thread-1-processing-n:127.0.0.1:46070_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1054)    2) 
Thread[id=13794, name=Scheduler-1258969394, state=TIMED_WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)  
       at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)    3) Thread[id=13846, 
name=zkConnectionManagerCallback-2183-thread-1-processing-n:127.0.0.1:34217_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1054)    4) 
Thread[id=13873, name=ScheduledTrigger-4091-thread-3, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)    5) Thread[id=13834, 
name=zkConnectionManagerCallback-2178-thread-1-processing-n:127.0.0.1:34217_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]         at 
java.lang.Thread.sleep(Native Method)         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1054)    6) 
Thread[id=13814, name=Scheduler-1068785359, state=WAITING, 
group=TGRP-TestCollectionAPI]         at sun.misc.Unsafe.park(Native Method)    
     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)       
  at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1081)
         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
        at java.lang.Thread.run(Thread.java:748)    7) Thread[id=13754, 
name=qtp46475805-13754, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.EPollArrayWrapper.interrupt(Native Method)         at 
sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:317)         at 
sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:207)         at 
java.nio.channels.spi.AbstractSelector$1.interrupt(AbstractSelector.java:213)   
      at 
java.nio.channels.spi.AbstractSelector.begin(AbstractSelector.java:219)         
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)    8) Thread[id=13751, 
name=qtp46475805-13751, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.IOUtil.drain(Native Method)         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:104)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.io.ManagedSelector$$Lambda$219/634343782.run(Unknown Source)  
       at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626) 
        at java.lang.Thread.run(Thread.java:748)    9) Thread[id=13789, 
name=qtp56914829-13789, state=RUNNABLE, group=TGRP-TestCollectionAPI]         
at sun.nio.ch.IOUtil.drain(Native Method)         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:104)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
         at org.ec

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

a.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
   [junit4]    >         at 
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
   [junit4]    >         at 
java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   17) Thread[id=13786, name=qtp56914829-13786, state=RUNNABLE, 
group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.nio.ch.EPollArrayWrapper.interrupt(Native 
Method)
   [junit4]    >         at 
sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:317)
   [junit4]    >         at 
sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:207)
   [junit4]    >         at 
java.nio.channels.spi.AbstractSelector$1.interrupt(AbstractSelector.java:213)
   [junit4]    >         at 
java.nio.channels.spi.AbstractSelector.begin(AbstractSelector.java:219)
   [junit4]    >         at 
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:92)
   [junit4]    >         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
   [junit4]    >         at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
   [junit4]    >         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
   [junit4]    >         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.select(ManagedSelector.java:375)
   [junit4]    >         at 
org.eclipse.jetty.io.ManagedSelector$SelectorProducer.produce(ManagedSelector.java:304)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:179)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
   [junit4]    >         at 
org.eclipse.jetty.io.ManagedSelector$$Lambda$219/634343782.run(Unknown Source)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   18) Thread[id=13770, 
name=zkConnectionManagerCallback-2165-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
   [junit4]    >         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
   [junit4]    >         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   19) Thread[id=13757, name=qtp46475805-13757, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
   [junit4]    >         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.reservedWait(ReservedThreadExecutor.java:308)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:373)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
   [junit4]    >         at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   20) Thread[id=13773, name=Thread-6569, state=WAITING, 
group=TGRP-TestCollectionAPI]
   [junit4]    >         at java.lang.Object.wait(Native Method)
   [junit4]    >         at java.lang.Object.wait(Object.java:502)
   [junit4]    >         at 
org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
   [junit4]    >   21) Thread[id=13813, 
name=zkConnectionManagerCallback-2183-thread-1, state=WAITING, 
group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
   [junit4]    >         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
   [junit4]    >         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   22) Thread[id=13808, name=Thread-6578, state=WAITING, 
group=TGRP-TestCollectionAPI]
   [junit4]    >         at java.lang.Object.wait(Native Method)
   [junit4]    >         at java.lang.Object.wait(Object.java:502)
   [junit4]    >         at 
org.apache.solr.core.CloserThread.run(CoreContainer.java:1725)
   [junit4]    >   23) Thread[id=13862, name=ScheduledTrigger-4091-thread-2, 
state=WAITING, group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
   [junit4]    >         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
   [junit4]    >         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
   [junit4]    >         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   24) Thread[id=13759, name=Scheduler-1248584203, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
   [junit4]    >         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
   [junit4]    >         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
   [junit4]    >         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   25) Thread[id=13861, name=ScheduledTrigger-4091-thread-1, 
state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
   [junit4]    >         at sun.misc.Unsafe.park(Native Method)
   [junit4]    >         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
   [junit4]    >         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
   [junit4]    >         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
   [junit4]    >         at 
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
   [junit4]    >         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >   26) Thread[id=13859, 
name=zkConnectionManagerCallback-2165-thread-1-processing-n:127.0.0.1:46070_-SendThread(127.0.0.1:41507),
 state=TIMED_WAITING, group=TGRP-TestCollectionAPI]
   [junit4]    >         at java.lang.Thread.sleep(Native Method)
   [junit4]    >         at 
org.apache.zookeeper.client.StaticHostProvider.next(StaticHostProvider.java:105)
   [junit4]    >         at 
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1000)
   [junit4]    >         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1063)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([1A3EF4FEA8212041]:0)
   [junit4] Completed [380/783 (1!)] on J2 in 131.22s, 1 test, 3 errors <<< 
FAILURES!

[...truncated 50861 lines...]
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