[JENKINS] Lucene-Solr-NightlyTests-master - Build # 1500 - Still unstable

[Apache Jenkins Server]

Build: https://builds.apache.org/job/Lucene-Solr-NightlyTests-master/1500/

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

Error Message:
ObjectTracker found 1 object(s) that were not released!!! [Overseer] 
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.cloud.Overseer  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at org.apache.solr.cloud.Overseer.start(Overseer.java:545)  at 
org.apache.solr.cloud.OverseerElectionContext.runLeaderProcess(ElectionContext.java:850)
  at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170) 
 at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)  
at org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)  at 
org.apache.solr.cloud.LeaderElector.retryElection(LeaderElector.java:393)  at 
org.apache.solr.cloud.ZkController.rejoinOverseerElection(ZkController.java:2055)
  at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
  at java.lang.Thread.run(Thread.java:748)  

Stack Trace:
java.lang.AssertionError: ObjectTracker found 1 object(s) that were not 
released!!! [Overseer]
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.cloud.Overseer
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at org.apache.solr.cloud.Overseer.start(Overseer.java:545)
        at 
org.apache.solr.cloud.OverseerElectionContext.runLeaderProcess(ElectionContext.java:850)
        at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170)
        at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)
        at 
org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)
        at 
org.apache.solr.cloud.LeaderElector.retryElection(LeaderElector.java:393)
        at 
org.apache.solr.cloud.ZkController.rejoinOverseerElection(ZkController.java:2055)
        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
        at java.lang.Thread.run(Thread.java:748)


        at __randomizedtesting.SeedInfo.seed([EA2B65CF198D5E35]:0)
        at org.junit.Assert.fail(Assert.java:93)
        at org.junit.Assert.assertTrue(Assert.java:43)
        at org.junit.Assert.assertNull(Assert.java:551)
        at 
org.apache.solr.SolrTestCaseJ4.teardownTestCases(SolrTestCaseJ4.java:301)
        at sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1737)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:897)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
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.ZkControllerTest

Error Message:
1 thread leaked from SUITE scope at org.apache.solr.cloud.ZkControllerTest:     
1) Thread[id=25840, 
name=OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]         at 
java.lang.Throwable.fillInStackTrace(Native Method)         at 
java.lang.Throwable.fillInStackTrace(Throwable.java:783)         at 
java.lang.Throwable.<init>(Throwable.java:250)         at 
java.lang.Exception.<init>(Exception.java:54)         at 
org.apache.zookeeper.KeeperException.<init>(KeeperException.java:439)         
at 
org.apache.zookeeper.KeeperException$SessionExpiredException.<init>(KeeperException.java:685)
         at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)         
at org.apache.zookeeper.KeeperException.create(KeeperException.java:54)         
at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)         at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
         at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$253/1448267346.execute(Unknown
 Source)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
         at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)        
 at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
         at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
         at java.lang.Thread.run(Thread.java:748)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 1 thread leaked from SUITE 
scope at org.apache.solr.cloud.ZkControllerTest: 
   1) Thread[id=25840, 
name=OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
        at java.lang.Throwable.fillInStackTrace(Native Method)
        at java.lang.Throwable.fillInStackTrace(Throwable.java:783)
        at java.lang.Throwable.<init>(Throwable.java:250)
        at java.lang.Exception.<init>(Exception.java:54)
        at org.apache.zookeeper.KeeperException.<init>(KeeperException.java:439)
        at 
org.apache.zookeeper.KeeperException$SessionExpiredException.<init>(KeeperException.java:685)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
        at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
        at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$253/1448267346.execute(Unknown
 Source)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
        at java.lang.Thread.run(Thread.java:748)
        at __randomizedtesting.SeedInfo.seed([EA2B65CF198D5E35]:0)


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

Error Message:
There are still zombie threads that couldn't be terminated:    1) 
Thread[id=25840, 
name=OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]         at 
java.util.Arrays.copyOfRange(Arrays.java:3664)         at 
java.lang.StringBuffer.toString(StringBuffer.java:669)         at 
org.apache.log4j.pattern.NameAbbreviator$PatternAbbreviatorFragment.abbreviate(NameAbbreviator.java:277)
         at 
org.apache.log4j.pattern.NameAbbreviator$PatternAbbreviator.abbreviate(NameAbbreviator.java:346)
         at 
org.apache.log4j.pattern.NamePatternConverter.abbreviate(NamePatternConverter.java:59)
         at 
org.apache.log4j.pattern.LoggerPatternConverter.format(LoggerPatternConverter.java:64)
         at 
org.apache.log4j.pattern.BridgePatternConverter.format(BridgePatternConverter.java:119)
         at 
org.apache.log4j.EnhancedPatternLayout.format(EnhancedPatternLayout.java:546)   
      at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:310)     
    at org.apache.log4j.WriterAppender.append(WriterAppender.java:162)         
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)        
 at 
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
         at org.apache.log4j.Category.callAppenders(Category.java:206)         
at org.apache.log4j.Category.forcedLog(Category.java:391)         at 
org.apache.log4j.Category.log(Category.java:856)         at 
org.slf4j.impl.Log4jLoggerAdapter.error(Log4jLoggerAdapter.java:576)         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:142)
         at java.lang.Thread.run(Thread.java:748)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
threads that couldn't be terminated:
   1) Thread[id=25840, 
name=OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
        at java.util.Arrays.copyOfRange(Arrays.java:3664)
        at java.lang.StringBuffer.toString(StringBuffer.java:669)
        at 
org.apache.log4j.pattern.NameAbbreviator$PatternAbbreviatorFragment.abbreviate(NameAbbreviator.java:277)
        at 
org.apache.log4j.pattern.NameAbbreviator$PatternAbbreviator.abbreviate(NameAbbreviator.java:346)
        at 
org.apache.log4j.pattern.NamePatternConverter.abbreviate(NamePatternConverter.java:59)
        at 
org.apache.log4j.pattern.LoggerPatternConverter.format(LoggerPatternConverter.java:64)
        at 
org.apache.log4j.pattern.BridgePatternConverter.format(BridgePatternConverter.java:119)
        at 
org.apache.log4j.EnhancedPatternLayout.format(EnhancedPatternLayout.java:546)
        at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:310)
        at org.apache.log4j.WriterAppender.append(WriterAppender.java:162)
        at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
        at 
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
        at org.apache.log4j.Category.callAppenders(Category.java:206)
        at org.apache.log4j.Category.forcedLog(Category.java:391)
        at org.apache.log4j.Category.log(Category.java:856)
        at org.slf4j.impl.Log4jLoggerAdapter.error(Log4jLoggerAdapter.java:576)
        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:142)
        at java.lang.Thread.run(Thread.java:748)
        at __randomizedtesting.SeedInfo.seed([EA2B65CF198D5E35]:0)




Build Log:
[...truncated 14049 lines...]
   [junit4] Suite: org.apache.solr.cloud.ZkControllerTest
   [junit4]   2> Creating dataDir: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-master/checkout/solr/build/solr-core/test/J1/temp/solr.cloud.ZkControllerTest_EA2B65CF198D5E35-001/init-core-data-001
   [junit4]   2> 2375577 WARN  
(SUITE-ZkControllerTest-seed#[EA2B65CF198D5E35]-worker) [    ] 
o.a.s.SolrTestCaseJ4 startTrackingSearchers: numOpens=23 numCloses=23
   [junit4]   2> 2375578 INFO  
(SUITE-ZkControllerTest-seed#[EA2B65CF198D5E35]-worker) [    ] 
o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true) 
w/NUMERIC_DOCVALUES_SYSPROP=true
   [junit4]   2> 2375579 INFO  
(SUITE-ZkControllerTest-seed#[EA2B65CF198D5E35]-worker) [    ] 
o.a.s.SolrTestCaseJ4 Randomized ssl (false) and clientAuth (false) via: 
@org.apache.solr.SolrTestCaseJ4$SuppressSSL(bugUrl=None)
   [junit4]   2> 2375580 INFO  
(SUITE-ZkControllerTest-seed#[EA2B65CF198D5E35]-worker) [    ] 
o.a.s.SolrTestCaseJ4 SecureRandom sanity checks: 
test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
   [junit4]   2> 2375585 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testGetHostName
   [junit4]   2> 2375586 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 2375586 INFO  (Thread-9874) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 2375586 INFO  (Thread-9874) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 2375589 ERROR (Thread-9874) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 2375686 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:43360
   [junit4]   2> 2375692 INFO  (zkConnectionManagerCallback-6040-thread-1) [    
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 2375694 INFO  (zkConnectionManagerCallback-6042-thread-1) [    
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 2375703 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) [    ] 
o.a.s.c.SolrXmlConfig MBean server found: 
com.sun.jmx.mbeanserver.JmxMBeanServer@644cf124, but no JMX reporters were 
configured - adding default JMX reporter.
   [junit4]   2> 2375708 INFO  
(zkConnectionManagerCallback-6046-thread-1-processing-n:127.0.0.1:8983_solr) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 2375828 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 2375829 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.OverseerElectionContext I am going to be 
the leader 127.0.0.1:8983_solr
   [junit4]   2> 2375830 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer 
(id=73434860240437250-127.0.0.1:8983_solr-n_0000000000) starting
   [junit4]   2> 2375840 INFO  
(zkConnectionManagerCallback-6051-thread-1-processing-n:127.0.0.1:8983_solr) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 2375842 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 
127.0.0.1:43360/solr ready
   [junit4]   2> 2375843 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.ZkController Register node as live in 
ZooKeeper:/live_nodes/127.0.0.1:8983_solr
   [junit4]   2> 2375844 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[EA2B65CF198D5E35]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer 
(id=73434860240437250-127.0.0.1:8983_solr-n_0000000000) closing
   [junit4]   2> 2375845 INFO  
(OverseerStateUpdate-73434860240437250-127.0.0.1:8983_solr-n_0000000000) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.c.ZkStateReader Updated live nodes from 
ZooKeeper... (0) -> (1)
   [junit4]   2> 2375846 INFO  
(OverseerStateUpdate-73434860240437250-127.0.0.1:8983_solr-n_0000000000) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer Loop exiting : 
127.0.0.1:8983_solr
   [junit4]   2> 2375847 WARN  (OverseerExitThread) [n:127.0.0.1:8983_solr    ] 
o.a.s.c.Overseer I'm exiting, but I'm still the leader
   [junit4]   2> 2375849 WARN  
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000000)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread Interrupted
   [junit4]   2> java.lang.InterruptedException
   [junit4]   2>        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1220)
   [junit4]   2>        at 
java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:335)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:165)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 2375852 INFO  (OverseerExitThread) [n:127.0.0.1:8983_solr    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:8983_solr
   [junit4]   2> 2375853 INFO  (OverseerExitThread) [n:127.0.0.1:8983_solr    ] 
o.a.s.c.Overseer Overseer 
(id=73434860240437250-127.0.0.1:8983_solr-n_0000000001) starting
   [junit4]   2> 2375860 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375861 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375861 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375862 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375862 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375863 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375863 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375863 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375863 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375864 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375864 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375864 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375864 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375865 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375865 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375865 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375865 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375866 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375866 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375866 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375867 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375867 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375867 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375868 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375868 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375868 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375869 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375869 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375869 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375869 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375869 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375870 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375870 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375870 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375870 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375871 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375871 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375871 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375871 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375872 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375872 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375872 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375873 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 2375873 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]  

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

kClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> NOTE: download the large Jenkins line-docs file by running 
'ant get-jenkins-line-docs' in the lucene directory.
   [junit4]   2> 2483992 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=ZkControllerTest 
-Dtests.seed=EA2B65CF198D5E35 -Dtests.multiplier=2 -Dtests.nightly=true 
-Dtests.slow=true 
-Dtests.linedocsfile=/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-master/test-data/enwiki.random.lines.txt
 -Dtests.locale=ms -Dtests.timezone=America/Cordoba -Dtests.asserts=true 
-Dtests.file.encoding=UTF-8
   [junit4]   2> 2483992 ERROR 
(OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4] ERROR   0.00s J1 | ZkControllerTest (suite) <<<
   [junit4]    > Throwable #1: java.lang.AssertionError: ObjectTracker found 1 
object(s) that were not released!!! [Overseer]
   [junit4]    > 
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.cloud.Overseer
   [junit4]    >        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
   [junit4]    >        at 
org.apache.solr.cloud.Overseer.start(Overseer.java:545)
   [junit4]    >        at 
org.apache.solr.cloud.OverseerElectionContext.runLeaderProcess(ElectionContext.java:850)
   [junit4]    >        at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170)
   [junit4]    >        at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)
   [junit4]    >        at 
org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)
   [junit4]    >        at 
org.apache.solr.cloud.LeaderElector.retryElection(LeaderElector.java:393)
   [junit4]    >        at 
org.apache.solr.cloud.ZkController.rejoinOverseerElection(ZkController.java:2055)
   [junit4]    >        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
   [junit4]    >        at java.lang.Thread.run(Thread.java:748)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([EA2B65CF198D5E35]:0)
   [junit4]    >        at 
org.apache.solr.SolrTestCaseJ4.teardownTestCases(SolrTestCaseJ4.java:301)
   [junit4]    >        at java.lang.Thread.run(Thread.java:748)Throwable #2: 
com.carrotsearch.randomizedtesting.ThreadLeakError: 1 thread leaked from SUITE 
scope at org.apache.solr.cloud.ZkControllerTest: 
   [junit4]    >    1) Thread[id=25840, 
name=OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
   [junit4]    >         at java.lang.Throwable.fillInStackTrace(Native Method)
   [junit4]    >         at 
java.lang.Throwable.fillInStackTrace(Throwable.java:783)
   [junit4]    >         at java.lang.Throwable.<init>(Throwable.java:250)
   [junit4]    >         at java.lang.Exception.<init>(Exception.java:54)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException.<init>(KeeperException.java:439)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException$SessionExpiredException.<init>(KeeperException.java:685)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]    >         at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$253/1448267346.execute(Unknown
 Source)
   [junit4]    >         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]    >         at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]    >         at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]    >         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([EA2B65CF198D5E35]:0)Throwable #3: 
com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
threads that couldn't be terminated:
   [junit4]    >    1) Thread[id=25840, 
name=OverseerAutoScalingTriggerThread-73434860240437250-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
   [junit4]    >         at java.util.Arrays.copyOfRange(Arrays.java:3664)
   [junit4]    >         at 
java.lang.StringBuffer.toString(StringBuffer.java:669)
   [junit4]    >         at 
org.apache.log4j.pattern.NameAbbreviator$PatternAbbreviatorFragment.abbreviate(NameAbbreviator.java:277)
   [junit4]    >         at 
org.apache.log4j.pattern.NameAbbreviator$PatternAbbreviator.abbreviate(NameAbbreviator.java:346)
   [junit4]    >         at 
org.apache.log4j.pattern.NamePatternConverter.abbreviate(NamePatternConverter.java:59)
   [junit4]    >         at 
org.apache.log4j.pattern.LoggerPatternConverter.format(LoggerPatternConverter.java:64)
   [junit4]    >         at 
org.apache.log4j.pattern.BridgePatternConverter.format(BridgePatternConverter.java:119)
   [junit4]    >         at 
org.apache.log4j.EnhancedPatternLayout.format(EnhancedPatternLayout.java:546)
   [junit4]    >         at 
org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:310)
   [junit4]    >         at 
org.apache.log4j.WriterAppender.append(WriterAppender.java:162)
   [junit4]    >         at 
org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
   [junit4]    >         at 
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
   [junit4]    >         at 
org.apache.log4j.Category.callAppenders(Category.java:206)
   [junit4]    >         at 
org.apache.log4j.Category.forcedLog(Category.java:391)
   [junit4]    >         at org.apache.log4j.Category.log(Category.java:856)
   [junit4]    >         at 
org.slf4j.impl.Log4jLoggerAdapter.error(Log4jLoggerAdapter.java:576)
   [junit4]    >         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:142)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([EA2B65CF198D5E35]:0)
   [junit4] Completed [405/785 (1!)] on J1 in 108.43s, 4 tests, 1 failure, 2 
errors, 1 skipped <<< FAILURES!

[...truncated 50701 lines...]

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