Build: https://builds.apache.org/job/Lucene-Solr-Tests-master/2437/

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$ObjectTrackerException: 
org.apache.solr.cloud.Overseer  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at org.apache.solr.cloud.Overseer.start(Overseer.java:545)  at 
org.apache.solr.cloud.OverseerElectionContext.runLeaderProcess(ElectionContext.java:850)
  at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170) 
 at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)  
at org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)  at 
org.apache.solr.cloud.LeaderElector.retryElection(LeaderElector.java:393)  at 
org.apache.solr.cloud.ZkController.rejoinOverseerElection(ZkController.java:2063)
  at 
org.apache.solr.cloud.Overseer$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$ObjectTrackerException: 
org.apache.solr.cloud.Overseer
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at org.apache.solr.cloud.Overseer.start(Overseer.java:545)
        at 
org.apache.solr.cloud.OverseerElectionContext.runLeaderProcess(ElectionContext.java:850)
        at 
org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170)
        at 
org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)
        at 
org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:307)
        at 
org.apache.solr.cloud.LeaderElector.retryElection(LeaderElector.java:393)
        at 
org.apache.solr.cloud.ZkController.rejoinOverseerElection(ZkController.java:2063)
        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
        at java.lang.Thread.run(Thread.java:748)


        at __randomizedtesting.SeedInfo.seed([BB739D5DCD74229F]: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.GeneratedMethodAccessor40.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=5638, 
name=OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]         at 
java.security.AccessController.doPrivileged(Native Method)         at 
com.carrotsearch.ant.tasks.junit4.events.Serializer.flushQueue(Serializer.java:114)
         at 
com.carrotsearch.ant.tasks.junit4.events.Serializer.serialize(Serializer.java:99)
         at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain$3$2.write(SlaveMain.java:472) 
        at 
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)         
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)         at 
java.io.PrintStream.flush(PrintStream.java:338)         at 
java.io.FilterOutputStream.flush(FilterOutputStream.java:140)         at 
java.io.PrintStream.write(PrintStream.java:482)         at 
sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)         at 
sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)         at 
sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)         at 
sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)         at 
java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)         at 
org.apache.log4j.helpers.QuietWriter.flush(QuietWriter.java:59)         at 
org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:324)         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: 1 thread leaked from SUITE 
scope at org.apache.solr.cloud.ZkControllerTest: 
   1) Thread[id=5638, 
name=OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
        at java.security.AccessController.doPrivileged(Native Method)
        at 
com.carrotsearch.ant.tasks.junit4.events.Serializer.flushQueue(Serializer.java:114)
        at 
com.carrotsearch.ant.tasks.junit4.events.Serializer.serialize(Serializer.java:99)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain$3$2.write(SlaveMain.java:472)
        at 
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
        at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
        at java.io.PrintStream.flush(PrintStream.java:338)
        at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
        at java.io.PrintStream.write(PrintStream.java:482)
        at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
        at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
        at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
        at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
        at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
        at org.apache.log4j.helpers.QuietWriter.flush(QuietWriter.java:59)
        at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:324)
        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([BB739D5DCD74229F]: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=5638, 
name=OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]         at 
java.lang.Object.notifyAll(Native Method)         at 
org.apache.zookeeper.ClientCnxn.finishPacket(ClientCnxn.java:652)         at 
org.apache.zookeeper.ClientCnxn.conLossPacket(ClientCnxn.java:674)         at 
org.apache.zookeeper.ClientCnxn.queuePacket(ClientCnxn.java:1452)         at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1405)         at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1213)         at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
         at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$273/413223882.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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
         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: There are still zombie 
threads that couldn't be terminated:
   1) Thread[id=5638, 
name=OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
        at java.lang.Object.notifyAll(Native Method)
        at org.apache.zookeeper.ClientCnxn.finishPacket(ClientCnxn.java:652)
        at org.apache.zookeeper.ClientCnxn.conLossPacket(ClientCnxn.java:674)
        at org.apache.zookeeper.ClientCnxn.queuePacket(ClientCnxn.java:1452)
        at org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1405)
        at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1213)
        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
        at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$273/413223882.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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
        at java.lang.Thread.run(Thread.java:748)
        at __randomizedtesting.SeedInfo.seed([BB739D5DCD74229F]:0)




Build Log:
[...truncated 1837 lines...]
   [junit4] JVM J1: stdout was not empty, see: 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/lucene/build/core/test/temp/junit4-J1-20180318_113715_0135107548067810468204.sysout
   [junit4] >>> JVM J1 emitted unexpected output (verbatim) ----
   [junit4] codec: Lucene70, pf: BloomFilter, dvf: Memory
   [junit4] <<< JVM J1: EOF ----

[...truncated 11020 lines...]
   [junit4] Suite: org.apache.solr.cloud.ZkControllerTest
   [junit4]   2> Creating dataDir: 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/solr/build/solr-core/test/J1/temp/solr.cloud.ZkControllerTest_BB739D5DCD74229F-001/init-core-data-001
   [junit4]   2> 1576871 WARN  
(SUITE-ZkControllerTest-seed#[BB739D5DCD74229F]-worker) [    ] 
o.a.s.SolrTestCaseJ4 startTrackingSearchers: numOpens=157 numCloses=157
   [junit4]   2> 1576871 INFO  
(SUITE-ZkControllerTest-seed#[BB739D5DCD74229F]-worker) [    ] 
o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true) 
w/NUMERIC_DOCVALUES_SYSPROP=true
   [junit4]   2> 1576893 INFO  
(SUITE-ZkControllerTest-seed#[BB739D5DCD74229F]-worker) [    ] 
o.a.s.SolrTestCaseJ4 Randomized ssl (false) and clientAuth (false) via: 
@org.apache.solr.SolrTestCaseJ4$SuppressSSL(bugUrl=None)
   [junit4]   2> 1576893 INFO  
(SUITE-ZkControllerTest-seed#[BB739D5DCD74229F]-worker) [    ] 
o.a.s.SolrTestCaseJ4 SecureRandom sanity checks: 
test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
   [junit4]   2> 1576894 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testGetHostName
   [junit4]   2> 1576895 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 1576895 INFO  (Thread-1059) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 1576895 INFO  (Thread-1059) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 1576898 ERROR (Thread-1059) [    ] 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> 1576995 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:34240
   [junit4]   2> 1576999 INFO  (zkConnectionManagerCallback-1392-thread-1) [    
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 1577001 INFO  (zkConnectionManagerCallback-1394-thread-1) [    
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 1577020 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) [    ] 
o.a.s.c.SolrXmlConfig MBean server found: 
com.sun.jmx.mbeanserver.JmxMBeanServer@54335987, but no JMX reporters were 
configured - adding default JMX reporter.
   [junit4]   2> 1577022 INFO  
(zkConnectionManagerCallback-1398-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> 1577214 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 1577214 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) 
[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> 1577215 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer 
(id=72301126086754306-127.0.0.1:8983_solr-n_0000000000) starting
   [junit4]   2> 1577230 INFO  
(zkConnectionManagerCallback-1403-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> 1577232 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 
127.0.0.1:34240/solr ready
   [junit4]   2> 1577233 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) 
[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> 1577235 INFO  
(TEST-ZkControllerTest.testGetHostName-seed#[BB739D5DCD74229F]) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer 
(id=72301126086754306-127.0.0.1:8983_solr-n_0000000000) closing
   [junit4]   2> 1577235 ERROR 
(OverseerCollectionConfigSetProcessor-72301126086754306-127.0.0.1:8983_solr-n_0000000000)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.OverseerTaskProcessor Unable to prioritize 
overseer 
   [junit4]   2> java.lang.InterruptedException
   [junit4]   2>        at java.lang.Object.wait(Native Method)
   [junit4]   2>        at java.lang.Object.wait(Object.java:502)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1409)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1100)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$exists$3(SolrZkClient.java:316)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:316)
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerNodePrioritizer.prioritizeOverseerNodes(OverseerNodePrioritizer.java:60)
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:178)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1577235 INFO  
(OverseerStateUpdate-72301126086754306-127.0.0.1:8983_solr-n_0000000000) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.c.ZkStateReader Updated live nodes from 
ZooKeeper... (0) -> (1)
   [junit4]   2> 1577255 INFO  
(OverseerStateUpdate-72301126086754306-127.0.0.1:8983_solr-n_0000000000) 
[n:127.0.0.1:8983_solr    ] o.a.s.c.Overseer Overseer Loop exiting : 
127.0.0.1:8983_solr
   [junit4]   2> 1577255 WARN  
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000000)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread Interrupted
   [junit4]   2> java.lang.InterruptedException
   [junit4]   2>        at java.lang.Object.wait(Native Method)
   [junit4]   2>        at java.lang.Object.wait(Object.java:502)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1409)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.setData(ZooKeeper.java:1328)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$setData$6(SolrZkClient.java:352)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.setData(SolrZkClient.java:352)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.setData(ZkDistribStateManager.java:146)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:132)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1577258 WARN  (OverseerExitThread) [n:127.0.0.1:8983_solr    ] 
o.a.s.c.Overseer I'm exiting, but I'm still the leader
   [junit4]   2> 1577267 INFO  (OverseerExitThread) [n:127.0.0.1:8983_solr    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:8983_solr
   [junit4]   2> 1577268 INFO  (OverseerExitThread) [n:127.0.0.1:8983_solr    ] 
o.a.s.c.Overseer Overseer 
(id=72301126086754306-127.0.0.1:8983_solr-n_0000000001) starting
   [junit4]   2> 1577273 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577273 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577273 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577273 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577274 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577274 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577274 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577274 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577274 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577275 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577275 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577275 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577275 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577275 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577300 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577300 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577300 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577300 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577300 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577301 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577301 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577301 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577302 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577302 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577302 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577302 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577302 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577302 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577303 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577303 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577303 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577303 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577303 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577304 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577304 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577304 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577304 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577305 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577305 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577305 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577306 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577306 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1577306 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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 

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

Client.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> 1687582 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_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$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:127)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=ZkControllerTest 
-Dtests.seed=BB739D5DCD74229F -Dtests.multiplier=2 -Dtests.slow=true 
-Dtests.locale=pt-PT -Dtests.timezone=America/Argentina/Salta 
-Dtests.asserts=true -Dtests.file.encoding=UTF-8
   [junit4]   2> 1687582 ERROR 
(OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001)
 [n:127.0.0.1:8983_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error has 
occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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:2063)
   [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([BB739D5DCD74229F]: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=5638, 
name=OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
   [junit4]    >         at java.security.AccessController.doPrivileged(Native 
Method)
   [junit4]    >         at 
com.carrotsearch.ant.tasks.junit4.events.Serializer.flushQueue(Serializer.java:114)
   [junit4]    >         at 
com.carrotsearch.ant.tasks.junit4.events.Serializer.serialize(Serializer.java:99)
   [junit4]    >         at 
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
   [junit4]    >         at 
java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
   [junit4]    >         at java.io.PrintStream.flush(PrintStream.java:338)
   [junit4]    >         at 
java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
   [junit4]    >         at java.io.PrintStream.write(PrintStream.java:482)
   [junit4]    >         at 
sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
   [junit4]    >         at 
sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
   [junit4]    >         at 
sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
   [junit4]    >         at 
sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
   [junit4]    >         at 
java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
   [junit4]    >         at 
org.apache.log4j.helpers.QuietWriter.flush(QuietWriter.java:59)
   [junit4]    >         at 
org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:324)
   [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([BB739D5DCD74229F]:0)Throwable #3: 
com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
threads that couldn't be terminated:
   [junit4]    >    1) Thread[id=5638, 
name=OverseerAutoScalingTriggerThread-72301126086754306-127.0.0.1:8983_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
   [junit4]    >         at java.lang.Object.notifyAll(Native Method)
   [junit4]    >         at 
org.apache.zookeeper.ClientCnxn.finishPacket(ClientCnxn.java:652)
   [junit4]    >         at 
org.apache.zookeeper.ClientCnxn.conLossPacket(ClientCnxn.java:674)
   [junit4]    >         at 
org.apache.zookeeper.ClientCnxn.queuePacket(ClientCnxn.java:1452)
   [junit4]    >         at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1405)
   [junit4]    >         at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1213)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$273/413223882.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.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:83)
   [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([BB739D5DCD74229F]:0)
   [junit4] Completed [231/785 (1!)] on J1 in 110.81s, 4 tests, 1 failure, 2 
errors, 1 skipped <<< FAILURES!

[...truncated 51270 lines...]
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