Build: https://builds.apache.org/job/Lucene-Solr-NightlyTests-7.3/17/

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

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.joinElection(LeaderElector.java:216)  at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:355)  at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
  at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
  at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
  at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)  
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)  

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.joinElection(LeaderElector.java:216)
        at org.apache.solr.cloud.ZkController$1.command(ZkController.java:355)
        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)


        at __randomizedtesting.SeedInfo.seed([3D69AF76A3E5BD47]: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.GeneratedMethodAccessor55.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.TestLeaderElectionZkExpiry

Error Message:
1 thread leaked from SUITE scope at 
org.apache.solr.cloud.TestLeaderElectionZkExpiry:     1) Thread[id=17063, 
name=OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]         at 
java.lang.Throwable.fillInStackTrace(Native Method)         at 
java.lang.Throwable.fillInStackTrace(Throwable.java:783)         at 
java.lang.Throwable.<init>(Throwable.java:250)         at 
java.lang.Exception.<init>(Exception.java:54)         at 
org.apache.zookeeper.KeeperException.<init>(KeeperException.java:439)         
at 
org.apache.zookeeper.KeeperException$SessionExpiredException.<init>(KeeperException.java:685)
         at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)         
at org.apache.zookeeper.KeeperException.create(KeeperException.java:54)         
at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)         at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
         at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$217/191921242.execute(Unknown 
Source)         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
         at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)        
 at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
         at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
         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.TestLeaderElectionZkExpiry: 
   1) Thread[id=17063, 
name=OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
        at java.lang.Throwable.fillInStackTrace(Native Method)
        at java.lang.Throwable.fillInStackTrace(Throwable.java:783)
        at java.lang.Throwable.<init>(Throwable.java:250)
        at java.lang.Exception.<init>(Exception.java:54)
        at org.apache.zookeeper.KeeperException.<init>(KeeperException.java:439)
        at 
org.apache.zookeeper.KeeperException$SessionExpiredException.<init>(KeeperException.java:685)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
        at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
        at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$217/191921242.execute(Unknown 
Source)
        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
        at java.lang.Thread.run(Thread.java:748)
        at __randomizedtesting.SeedInfo.seed([3D69AF76A3E5BD47]:0)


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

Error Message:
There are still zombie threads that couldn't be terminated:    1) 
Thread[id=17063, 
name=OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]         at 
org.apache.lucene.util.TestRuleLimitSysouts$DelegateStream.write(TestRuleLimitSysouts.java:128)
         at java.io.PrintStream.write(PrintStream.java:480)         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:140)
         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=17063, 
name=OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
        at 
org.apache.lucene.util.TestRuleLimitSysouts$DelegateStream.write(TestRuleLimitSysouts.java:128)
        at java.io.PrintStream.write(PrintStream.java:480)
        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:140)
        at java.lang.Thread.run(Thread.java:748)
        at __randomizedtesting.SeedInfo.seed([3D69AF76A3E5BD47]:0)




Build Log:
[...truncated 13877 lines...]
   [junit4] Suite: org.apache.solr.cloud.TestLeaderElectionZkExpiry
   [junit4]   2> Creating dataDir: 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-7.3/checkout/solr/build/solr-core/test/J2/temp/solr.cloud.TestLeaderElectionZkExpiry_3D69AF76A3E5BD47-001/init-core-data-001
   [junit4]   2> 3049360 WARN  
(SUITE-TestLeaderElectionZkExpiry-seed#[3D69AF76A3E5BD47]-worker) [    ] 
o.a.s.SolrTestCaseJ4 startTrackingSearchers: numOpens=35 numCloses=35
   [junit4]   2> 3049360 INFO  
(SUITE-TestLeaderElectionZkExpiry-seed#[3D69AF76A3E5BD47]-worker) [    ] 
o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true) 
w/NUMERIC_DOCVALUES_SYSPROP=true
   [junit4]   2> 3049362 INFO  
(SUITE-TestLeaderElectionZkExpiry-seed#[3D69AF76A3E5BD47]-worker) [    ] 
o.a.s.SolrTestCaseJ4 Randomized ssl (true) and clientAuth (true) via: 
@org.apache.solr.util.RandomizeSSL(reason=, ssl=NaN, value=NaN, clientAuth=NaN)
   [junit4]   2> 3049375 INFO  
(SUITE-TestLeaderElectionZkExpiry-seed#[3D69AF76A3E5BD47]-worker) [    ] 
o.a.s.SolrTestCaseJ4 SecureRandom sanity checks: 
test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
   [junit4]   2> 3049413 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.SolrTestCaseJ4 ###Starting testLeaderElectionWithZkExpiry
   [junit4]   2> 3049418 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.c.SolrXmlConfig MBean server found: 
com.sun.jmx.mbeanserver.JmxMBeanServer@1b0ef58c, but no JMX reporters were 
configured - adding default JMX reporter.
   [junit4]   2> 3049584 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.m.r.SolrJmxReporter JMX monitoring for 'solr.node' (registry 
'solr.node') enabled at server: com.sun.jmx.mbeanserver.JmxMBeanServer@1b0ef58c
   [junit4]   2> 3049612 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.m.r.SolrJmxReporter JMX monitoring for 'solr.jvm' (registry 
'solr.jvm') enabled at server: com.sun.jmx.mbeanserver.JmxMBeanServer@1b0ef58c
   [junit4]   2> 3049612 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.m.r.SolrJmxReporter JMX monitoring for 'solr.jetty' (registry 
'solr.jetty') enabled at server: com.sun.jmx.mbeanserver.JmxMBeanServer@1b0ef58c
   [junit4]   2> 3049613 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.c.CorePropertiesLocator Found 0 core definitions underneath 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-7.3/checkout/solr/build/solr-core/test/J2/temp/solr.cloud.TestLeaderElectionZkExpiry_3D69AF76A3E5BD47-001/testLeaderElectionWithZkExpiry-solr-001
   [junit4]   2> 3049631 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 3049631 INFO  (Thread-4536) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 3049632 INFO  (Thread-4536) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 3049683 ERROR (Thread-4536) [    ] 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> 3049731 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [    ] o.a.s.c.ZkTestServer start zk server on port:32935
   [junit4]   2> 3049734 INFO  (zkConnectionManagerCallback-3946-thread-1) [    
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 3049736 INFO  (zkConnectionManagerCallback-3948-thread-1) [    
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 3049739 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3049947 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 3049948 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.OverseerElectionContext I am going to 
be the leader dummy.host.com:8984_solr
   [junit4]   2> 3049949 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer Overseer 
(id=72387939146268674-dummy.host.com:8984_solr-n_0000000000) starting
   [junit4]   2> 3049963 INFO  
(zkConnectionManagerCallback-3955-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3049965 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.s.i.ZkClientClusterStateProvider 
Cluster at 127.0.0.1:32935/solr ready
   [junit4]   2> 3049978 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController Register node as live in 
ZooKeeper:/live_nodes/dummy.host.com:8984_solr
   [junit4]   2> 3050001 INFO  
(zkCallback-3949-thread-1-processing-n:dummy.host.com:8984_solr) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.c.ZkStateReader Updated live nodes 
from ZooKeeper... (0) -> (1)
   [junit4]   2> 3050028 INFO  
(zkCallback-3954-thread-1-processing-n:dummy.host.com:8984_solr) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.c.ZkStateReader Updated live nodes 
from ZooKeeper... (0) -> (1)
   [junit4]   2> 3050030 INFO  
(zkCallback-3954-thread-1-processing-n:dummy.host.com:8984_solr) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.c.ZkStateReader Updated live nodes 
from ZooKeeper... (1) -> (0)
   [junit4]   2> 3050130 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Disconnected type:None path:null path: null type: None
   [junit4]   2> 3050131 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
disconnected
   [junit4]   2> 3052120 WARN  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47]-SendThread(127.0.0.1:32935))
 [n:dummy.host.com:8984_solr    ] o.a.z.ClientCnxn Unable to reconnect to 
ZooKeeper service, session 0x1012c7276d60002 has expired
   [junit4]   2> 3052120 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Expired type:None path:null path: null type: None
   [junit4]   2> 3052120 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper...
   [junit4]   2> 3052120 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer Overseer 
(id=72387939146268674-dummy.host.com:8984_solr-n_0000000000) closing
   [junit4]   2> 3052120 INFO  
(OverseerStateUpdate-72387939146268674-dummy.host.com:8984_solr-n_0000000000) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer Overseer Loop exiting : 
dummy.host.com:8984_solr
   [junit4]   2> 3052121 INFO  
(OverseerCollectionConfigSetProcessor-72387939146268674-dummy.host.com:8984_solr-n_0000000000)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.OverseerTaskProcessor According to ZK 
I (id=72387939146268674-dummy.host.com:8984_solr-n_0000000000) am no longer a 
leader.
   [junit4]   2> 3052122 ERROR (OverseerExitThread) [n:dummy.host.com:8984_solr 
   ] o.a.s.c.Overseer could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 3052220 WARN  
(zkCallback-3949-thread-1-processing-n:dummy.host.com:8984_solr) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.c.ZkStateReader ZooKeeper watch 
triggered, but Solr cannot talk to ZK: [KeeperErrorCode = Session expired for 
/live_nodes]
   [junit4]   2> 3052220 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268674-dummy.host.com:8984_solr-n_0000000000)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.ScheduledTriggers Failed to add 
trigger .auto_add_replicas
   [junit4]   2> org.apache.solr.common.SolrException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling/events/.auto_add_replicas
   [junit4]   2>        at 
org.apache.solr.cloud.ZkDistributedQueue.<init>(ZkDistributedQueue.java:124)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkDistributedQueue.<init>(ZkDistributedQueue.java:114)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkDistributedQueue.<init>(ZkDistributedQueue.java:110)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkDistributedQueueFactory.makeQueue(ZkDistributedQueueFactory.java:36)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.TriggerEventQueue.<init>(TriggerEventQueue.java:49)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers$TriggerWrapper.<init>(ScheduledTriggers.java:511)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.ScheduledTriggers.add(ScheduledTriggers.java:204)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:227)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling/events/.auto_add_replicas
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1105)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$exists$2(SolrZkClient.java:304)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:304)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:519)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.ensureExists(ZkCmdExecutor.java:97)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.ensureExists(ZkCmdExecutor.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkDistributedQueue.<init>(ZkDistributedQueue.java:122)
   [junit4]   2>        ... 8 more
   [junit4]   2> 3052221 WARN  
(OverseerAutoScalingTriggerThread-72387939146268674-dummy.host.com:8984_solr-n_0000000000)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread Error 
removing old nodeAdded markers
   [junit4]   2> java.lang.InterruptedException
   [junit4]   2>        at java.lang.Object.wait(Native Method)
   [junit4]   2>        at java.lang.Object.wait(Object.java:502)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1409)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1533)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getChildren$4(SolrZkClient.java:328)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:328)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.listData(ZkDistribStateManager.java:67)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.listData(ZkDistribStateManager.java:77)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:254)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 3052221 WARN  
(OverseerAutoScalingTriggerThread-72387939146268674-dummy.host.com:8984_solr-n_0000000000)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread 
OverseerTriggerThread has been closed, exiting.
   [junit4]   2> 3052221 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Connection expired - starting a new one...
   [junit4]   2> 3052222 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3052222 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Connection with 
ZooKeeper reestablished.
   [junit4]   2> 3052223 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController ZooKeeper session 
re-connected ... refreshing core states after session expiration.
   [junit4]   2> 3052224 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ZkStateReader Updated live nodes 
from ZooKeeper... (1) -> (0)
   [junit4]   2> 3052325 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Disconnected type:None path:null path: null type: None
   [junit4]   2> 3052326 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
disconnected
   [junit4]   2> 3054169 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxnFactory Ignoring unexpected runtime exception
   [junit4]   2> java.nio.channels.CancelledKeyException
   [junit4]   2>        at 
sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
   [junit4]   2>        at 
sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87)
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:205)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 3054169 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-SendThread(127.0.0.1:32935))
 [n:dummy.host.com:8984_solr    ] o.a.z.ClientCnxn Unable to reconnect to 
ZooKeeper service, session 0x1012c7276d60004 has expired
   [junit4]   2> 3054170 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Expired type:None path:null path: null type: None
   [junit4]   2> 3054170 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper...
   [junit4]   2> 3054170 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Connection expired - starting a new one...
   [junit4]   2> 3054185 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3054185 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Connection with 
ZooKeeper reestablished.
   [junit4]   2> 3054185 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController ZooKeeper session 
re-connected ... refreshing core states after session expiration.
   [junit4]   2> 3054275 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /aliases.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.exists(ZooKeeper.java:1105)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$exists$2(SolrZkClient.java:304)
   [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:304)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkStateReader.refreshAliases(ZkStateReader.java:1589)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:441)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$1.lambda$process$0(SolrZkClient.java:267)
   [junit4]   2>        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   [junit4]   2>        at 
java.util.concurrent.FutureTask.run(FutureTask.java:266)
   [junit4]   2>        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
   [junit4]   2>        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   [junit4]   2>        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 
   [junit4]   2> 3054275 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed:org.apache.solr.common.cloud.ZooKeeperException: 
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:415)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$1.lambda$process$0(SolrZkClient.java:267)
   [junit4]   2>        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   [junit4]   2>        at 
java.util.concurrent.FutureTask.run(FutureTask.java:266)
   [junit4]   2>        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
   [junit4]   2>        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   [junit4]   2>        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /aliases.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1105)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$exists$2(SolrZkClient.java:304)
   [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:304)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkStateReader.refreshAliases(ZkStateReader.java:1589)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:441)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        ... 10 more
   [junit4]   2> 
   [junit4]   2> 3054276 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed
   [junit4]   2> 3054276 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient 
Connected:true
   [junit4]   2> 3054303 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Disconnected type:None path:null path: null type: None
   [junit4]   2> 3054303 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
disconnected
   [junit4]   2> 3055929 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-SendThread(127.0.0.1:32935))
 [n:dummy.host.com:8984_solr    ] o.a.z.ClientCnxn Unable to reconnect to 
ZooKeeper service, session 0x1012c7276d60005 has expired
   [junit4]   2> 3055929 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Expired type:None path:null path: null type: None
   [junit4]   2> 3055929 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper...
   [junit4]   2> 3055929 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Connection expired - starting a new one...
   [junit4]   2> 3055930 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3055930 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Connection with 
ZooKeeper reestablished.
   [junit4]   2> 3055930 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController ZooKeeper session 
re-connected ... refreshing core states after session expiration.
   [junit4]   2> 3056029 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> 
   [junit4]   2> 3056030 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed:org.apache.solr.common.cloud.ZooKeeperException: 
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:415)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        ... 5 more
   [junit4]   2> 
   [junit4]   2> 3056030 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed
   [junit4]   2> 3056030 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient 
Connected:true
   [junit4]   2> 3056032 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Disconnected type:None path:null path: null type: None
   [junit4]   2> 3056032 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
disconnected
   [junit4]   2> 3057976 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-SendThread(127.0.0.1:32935))
 [n:dummy.host.com:8984_solr    ] o.a.z.ClientCnxn Unable to reconnect to 
ZooKeeper service, session 0x1012c7276d60006 has expired
   [junit4]   2> 3057976 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Expired type:None path:null path: null type: None
   [junit4]   2> 3057977 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper...
   [junit4]   2> 3057977 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Connection expired - starting a new one...
   [junit4]   2> 3057986 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3057986 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Connection with 
ZooKeeper reestablished.
   [junit4]   2> 3057986 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController ZooKeeper session 
re-connected ... refreshing core states after session expiration.
   [junit4]   2> 3058077 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> 
   [junit4]   2> 3058077 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed:org.apache.solr.common.cloud.ZooKeeperException: 
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:415)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        ... 5 more
   [junit4]   2> 
   [junit4]   2> 3058077 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed
   [junit4]   2> 3058078 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient 
Connected:true
   [junit4]   2> 3058090 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Disconnected type:None path:null path: null type: None
   [junit4]   2> 3058091 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
disconnected
   [junit4]   2> 3059619 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-SendThread(127.0.0.1:32935))
 [n:dummy.host.com:8984_solr    ] o.a.z.ClientCnxn Unable to reconnect to 
ZooKeeper service, session 0x1012c7276d60007 has expired
   [junit4]   2> 3059620 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Expired type:None path:null path: null type: None
   [junit4]   2> 3059620 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper...
   [junit4]   2> 3059620 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Connection expired - starting a new one...
   [junit4]   2> 3059621 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3059621 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Connection with 
ZooKeeper reestablished.
   [junit4]   2> 3059621 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController ZooKeeper session 
re-connected ... refreshing core states after session expiration.
   [junit4]   2> 3059720 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> 
   [junit4]   2> 3059720 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed:org.apache.solr.common.cloud.ZooKeeperException: 
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:415)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        ... 5 more
   [junit4]   2> 
   [junit4]   2> 3059721 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed
   [junit4]   2> 3059721 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient 
Connected:true
   [junit4]   2> 3059725 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Disconnected type:None path:null path: null type: None
   [junit4]   2> 3059725 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
disconnected
   [junit4]   2> 3060040 INFO  
(zkConnectionManagerCallback-3957-thread-1-processing-n:dummy.host.com:8984_solr)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3061517 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-SendThread(127.0.0.1:32935))
 [n:dummy.host.com:8984_solr    ] o.a.z.ClientCnxn Unable to reconnect to 
ZooKeeper service, session 0x1012c7276d60008 has expired
   [junit4]   2> 3061517 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Watcher 
org.apache.solr.common.cloud.ConnectionManager@147d0e16 name: 
ZooKeeperConnection Watcher:127.0.0.1:32935/solr got event WatchedEvent 
state:Expired type:None path:null path: null type: None
   [junit4]   2> 3061517 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper...
   [junit4]   2> 3061517 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Connection expired - starting a new one...
   [junit4]   2> 3061518 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient has 
connected
   [junit4]   2> 3061518 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager Connection with 
ZooKeeper reestablished.
   [junit4]   2> 3061518 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController ZooKeeper session 
re-connected ... refreshing core states after session expiration.
   [junit4]   2> 3061619 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> 
   [junit4]   2> 3061619 ERROR 
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed:org.apache.solr.common.cloud.ZooKeeperException: 
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:415)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]   2>        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /clusterstate.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.exists(ZooKeeper.java:1105)
   [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.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:430)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:330)
   [junit4]   2>        ... 5 more
   [junit4]   2> 
   [junit4]   2> 3061619 WARN  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy Reconnect 
to ZooKeeper failed
   [junit4]   2> 3061620 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient 
Connected:true
   [junit4]   2> 3061642 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.OverseerElectionContext I am going to 
be the leader dummy.host.com:8984_solr
   [junit4]   2> 3061656 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.TestLeaderElectionZkExpiry 
Time=5040678350061508 Overseer leader is = dummy.host.com:8984_solr
   [junit4]   2> 3061656 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer Overseer 
(id=72387939146268682-dummy.host.com:8984_solr-n_0000000001) starting
   [junit4]   2> 3061668 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.ZkController Register node as live in 
ZooKeeper:/live_nodes/dummy.host.com:8984_solr
   [junit4]   2> 3061669 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.DefaultConnectionStrategy 
Reconnected to ZooKeeper
   [junit4]   2> 3061669 INFO  
(zkConnectionManagerCallback-3950-thread-1-processing-n:dummy.host.com:8984_solr-EventThread)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.c.ConnectionManager zkClient 
Connected:true
   [junit4]   2> 3061670 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxn Unable to read additional data from client sessionid 
0x1012c7276d6000a, likely client has closed socket
   [junit4]   2> 3061684 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061684 INFO  
(OverseerCollectionConfigSetProcessor-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.OverseerTaskProcessor According to ZK 
I (id=72387939146268682-dummy.host.com:8984_solr-n_0000000001) am no longer a 
leader.
   [junit4]   2> 3061685 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061684 INFO  
(OverseerStateUpdate-72387939146268682-dummy.host.com:8984_solr-n_0000000001) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer According to ZK I 
(id=72387939146268682-dummy.host.com:8984_solr-n_0000000001) am no longer a 
leader.
   [junit4]   2> 3061685 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061685 INFO  
(OverseerStateUpdate-72387939146268682-dummy.host.com:8984_solr-n_0000000001) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer According to ZK I 
(id=72387939146268682-dummy.host.com:8984_solr-n_0000000001) am no longer a 
leader.
   [junit4]   2> 3061685 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061685 ERROR 
(OverseerCollectionConfigSetProcessor-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.OverseerTaskProcessor 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /overseer/collection-queue-work
   [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.getChildren(ZooKeeper.java:1535)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getChildren$4(SolrZkClient.java:328)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:328)
   [junit4]   2>        at 
org.apache.solr.cloud.ZkDistributedQueue.fetchZkChildren(ZkDistributedQueue.java:410)
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerTaskQueue.getTailId(OverseerTaskQueue.java:272)
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:163)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 
   [junit4]   2> 3061686 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061685 INFO  
(OverseerStateUpdate-72387939146268682-dummy.host.com:8984_solr-n_0000000001) 
[n:dummy.host.com:8984_solr    ] o.a.s.c.Overseer Overseer Loop exiting : 
dummy.host.com:8984_solr
   [junit4]   2> 3061686 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061686 INFO  
(OverseerCollectionConfigSetProcessor-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.OverseerTaskProcessor According to ZK 
I (id=72387939146268682-dummy.host.com:8984_solr-n_0000000001) am no longer a 
leader.
   [junit4]   2> 3061686 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061686 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061713 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061713 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061687 ERROR (OverseerExitThread) [n:dummy.host.com:8984_solr 
   ] o.a.s.c.Overseer could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 3061714 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> Caused by: 
org.apache.zookeeper.KeeperException$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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061713 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.c.CoreContainer Shutting down 
CoreContainer instance=285075914
   [junit4]   2> 3061714 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061714 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.m.SolrMetricManager Closing metric 
reporters for registry=solr.node, tag=null
   [junit4]   2> 3061714 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3061714 INFO  
(TEST-TestLeaderElectionZkExpiry.testLeaderElectionWithZkExpiry-seed#[3D69AF76A3E5BD47])
 [n:dummy.host.com:8984_solr    ] o.a.s.m.r.SolrJmxReporter Closing reporter 
[org.apache.solr.metrics.reporters.SolrJmxReporter@2cac5f79: rootName = null, 
domain = solr.node, service url = null, agent id = null] for registry solr.node 
/ com.codahale.metrics.MetricRegistry@45ef88a
   [junit4]   2> 3061715 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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(ZkDistribStateManag

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

 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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3166461 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4]   2> 3166461 ERROR 
(OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001)
 [n:dummy.host.com:8984_solr    ] o.a.s.c.a.OverseerTriggerThread A ZK error 
has occurred
   [junit4]   2> java.io.IOException: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /autoscaling.json
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:183)
   [junit4]   2>        at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]   2>        at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [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$5(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]   2>        ... 3 more
   [junit4] ERROR   0.00s J2 | TestLeaderElectionZkExpiry (suite) <<<
   [junit4]    > Throwable #1: java.lang.AssertionError: ObjectTracker found 1 
object(s) that were not released!!! [Overseer]
   [junit4]    > 
org.apache.solr.common.util.ObjectReleaseTracker$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.joinElection(LeaderElector.java:216)
   [junit4]    >        at 
org.apache.solr.cloud.ZkController$1.command(ZkController.java:355)
   [junit4]    >        at 
org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:167)
   [junit4]    >        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
   [junit4]    >        at 
org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:141)
   [junit4]    >        at 
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:531)
   [junit4]    >        at 
org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([3D69AF76A3E5BD47]:0)
   [junit4]    >        at 
org.apache.solr.SolrTestCaseJ4.teardownTestCases(SolrTestCaseJ4.java:301)
   [junit4]    >        at java.lang.Thread.run(Thread.java:748)Throwable #2: 
com.carrotsearch.randomizedtesting.ThreadLeakError: 1 thread leaked from SUITE 
scope at org.apache.solr.cloud.TestLeaderElectionZkExpiry: 
   [junit4]    >    1) Thread[id=17063, 
name=OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
   [junit4]    >         at java.lang.Throwable.fillInStackTrace(Native Method)
   [junit4]    >         at 
java.lang.Throwable.fillInStackTrace(Throwable.java:783)
   [junit4]    >         at java.lang.Throwable.<init>(Throwable.java:250)
   [junit4]    >         at java.lang.Exception.<init>(Exception.java:54)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException.<init>(KeeperException.java:439)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException$SessionExpiredException.<init>(KeeperException.java:685)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
   [junit4]    >         at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
   [junit4]    >         at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1215)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:340)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient$$Lambda$217/191921242.execute(Unknown 
Source)
   [junit4]    >         at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]    >         at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:340)
   [junit4]    >         at 
org.apache.solr.client.solrj.impl.ZkDistribStateManager.getAutoScalingConfig(ZkDistribStateManager.java:176)
   [junit4]    >         at 
org.apache.solr.client.solrj.cloud.autoscaling.DistribStateManager.getAutoScalingConfig(DistribStateManager.java:78)
   [junit4]    >         at 
org.apache.solr.cloud.autoscaling.OverseerTriggerThread.run(OverseerTriggerThread.java:126)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([3D69AF76A3E5BD47]:0)Throwable #3: 
com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
threads that couldn't be terminated:
   [junit4]    >    1) Thread[id=17063, 
name=OverseerAutoScalingTriggerThread-72387939146268682-dummy.host.com:8984_solr-n_0000000001,
 state=RUNNABLE, group=Overseer autoscaling triggers]
   [junit4]    >         at java.io.PrintStream.write(PrintStream.java:480)
   [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:140)
   [junit4]    >         at java.lang.Thread.run(Thread.java:748)
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([3D69AF76A3E5BD47]:0)
   [junit4] Completed [266/783 (1!)] on J2 in 117.26s, 1 test, 1 failure, 2 
errors <<< FAILURES!

[...truncated 51147 lines...]
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