Build: https://builds.apache.org/job/Lucene-Solr-Tests-8.x/233/

2 tests failed.
FAILED:  org.apache.solr.cloud.OverseerTest.testOverseerFailure

Error Message:
Test abandoned because suite timeout was reached.

Stack Trace:
java.lang.Exception: Test abandoned because suite timeout was reached.
        at __randomizedtesting.SeedInfo.seed([4F0A3CA46E6BCCE7]:0)


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

Error Message:
Suite timeout exceeded (>= 7200000 msec).

Stack Trace:
java.lang.Exception: Suite timeout exceeded (>= 7200000 msec).
        at __randomizedtesting.SeedInfo.seed([4F0A3CA46E6BCCE7]:0)




Build Log:
[...truncated 15971 lines...]
   [junit4] Suite: org.apache.solr.cloud.OverseerTest
   [junit4]   2> Creating dataDir: 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-8.x/solr/build/solr-core/test/J2/temp/solr.cloud.OverseerTest_4F0A3CA46E6BCCE7-001/init-core-data-001
   [junit4]   2> 768481 WARN  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.SolrTestCaseJ4 startTrackingSearchers: numOpens=3 numCloses=3
   [junit4]   2> 768482 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true) 
w/NUMERIC_DOCVALUES_SYSPROP=false
   [junit4]   2> 768488 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.SolrTestCaseJ4 Randomized ssl (true) and clientAuth (false) via: 
@org.apache.solr.util.RandomizeSSL(reason=, value=NaN, ssl=NaN, clientAuth=NaN)
   [junit4]   2> 768488 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.SolrTestCaseJ4 SecureRandom sanity checks: 
test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
   [junit4]   2> 768490 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 768491 INFO  (ZkTestServer Run Thread) [     ] 
o.a.s.c.ZkTestServer client port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 768491 INFO  (ZkTestServer Run Thread) [     ] 
o.a.s.c.ZkTestServer Starting server
   [junit4]   2> 768591 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.ZkTestServer start zk server on port:45531
   [junit4]   2> 768591 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.ZkTestServer parse host and port list: 127.0.0.1:45531
   [junit4]   2> 768591 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1 45531
   [junit4]   2> 768608 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 768639 INFO  (zkConnectionManagerCallback-2083-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 768639 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 768699 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 768727 INFO  (zkConnectionManagerCallback-2085-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 768727 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 768727 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.SolrTestCaseJ4 ####initCore
   [junit4]   2> 768727 INFO  
(SUITE-OverseerTest-seed#[4F0A3CA46E6BCCE7]-worker) [     ] 
o.a.s.SolrTestCaseJ4 ####initCore end
   [junit4]   2> 768739 INFO  
(TEST-OverseerTest.testLatchWatcher-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Starting testLatchWatcher
   [junit4]   2> 768853 INFO  
(TEST-OverseerTest.testLatchWatcher-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Ending testLatchWatcher
   [junit4]   2> 768859 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.SolrTestCaseJ4 ###Starting testExceptionWhenFlushClusterState
   [junit4]   2> 768959 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 768967 INFO  (zkConnectionManagerCallback-2091-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 768967 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 768987 WARN  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 
transport since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 768988 WARN  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.e.j.u.s.S.config Trusting all certificates configured for 
Client@186f9b40[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 768988 WARN  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured 
for Client@186f9b40[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 769007 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 769010 INFO  (zkConnectionManagerCallback-2098-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 769010 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 769371 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 769372 INFO  (zkConnectionManagerCallback-2103-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 769372 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 769393 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 
127.0.0.1:45531/solr ready
   [junit4]   2> 769395 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.OverseerElectionContext I am going to be the leader 
127.0.0.1:45531_solr
   [junit4]   2> 769396 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.Overseer Overseer 
(id=74867256053727234-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 769409 INFO  
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 769415 WARN  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.c.Overseer Unable to check back-compat of .system collection - 
can't obtain ClusterState.
   [junit4]   2> 769417 WARN  
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Exception when process message = {
   [junit4]   2>   "operation":"create",
   [junit4]   2>   "name":"collection1",
   [junit4]   2>   "replicationFactor":"1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "stateFormat":"2",
   [junit4]   2>   "createNodeSet":""}, consider as bad message and poll out 
from the queue
   [junit4]   2> 769421 ERROR 
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Exception in Overseer when process message from work queue, 
retrying
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode 
for /collections/collection1/state.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:118)
   [junit4]   2> org.apache.zookeeper.KeeperException$NoNodeException: 
KeeperErrorCode = NoNode for /collections/collection1/state.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:118) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:1538) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$create$7(SolrZkClient.java:394)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.create(SolrZkClient.java:394) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:204)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.overseer.ZkStateWriter.enqueueUpdate(ZkStateWriter.java:130)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.processQueueItem(Overseer.java:315)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:189) 
~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 769589 ERROR 
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Exception in Overseer main queue loop
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode 
for /collections/collection1/state.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:118)
   [junit4]   2> org.apache.zookeeper.KeeperException$NoNodeException: 
KeeperErrorCode = NoNode for /collections/collection1/state.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:118) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:1538) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$create$7(SolrZkClient.java:394)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.create(SolrZkClient.java:394) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:204)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:259) 
~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 769595 WARN  
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Exception when process message = {
   [junit4]   2>   "operation":"create",
   [junit4]   2>   "name":"collection1",
   [junit4]   2>   "replicationFactor":"1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "stateFormat":"2",
   [junit4]   2>   "createNodeSet":""}, consider as bad message and poll out 
from the queue
   [junit4]   2> 769596 ERROR 
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Exception in Overseer when process message from work queue, 
retrying
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode 
for /collections/collection1/state.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:118)
   [junit4]   2> org.apache.zookeeper.KeeperException$NoNodeException: 
KeeperErrorCode = NoNode for /collections/collection1/state.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:118) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:1538) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$create$7(SolrZkClient.java:394)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.create(SolrZkClient.java:394) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:204)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.overseer.ZkStateWriter.enqueueUpdate(ZkStateWriter.java:130)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.processQueueItem(Overseer.java:315)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:189) 
~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 769951 INFO  (closeThreadPool-2105-thread-1) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727234-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 769951 INFO  
(OverseerStateUpdate-74867256053727234-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 769960 INFO  
(OverseerAutoScalingTriggerThread-74867256053727234-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.a.OverseerTriggerThread OverseerTriggerThread woken up but we 
are closed, exiting.
   [junit4]   2> 769999 INFO  
(TEST-OverseerTest.testExceptionWhenFlushClusterState-seed#[4F0A3CA46E6BCCE7]) 
[     ] o.a.s.SolrTestCaseJ4 ###Ending testExceptionWhenFlushClusterState
   [junit4]   2> 770010 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 770011 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Starting testRemovalOfLastReplica
   [junit4]   2> 770110 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 770110 INFO  (zkConnectionManagerCallback-2109-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 770110 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 770139 WARN  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 transport 
since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 770150 WARN  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config Trusting all certificates configured for 
Client@64657706[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 770150 WARN  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured for 
Client@64657706[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 770158 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 770158 INFO  (zkConnectionManagerCallback-2116-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 770158 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 770161 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 770162 INFO  (zkConnectionManagerCallback-2121-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 770162 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 770166 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 770168 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45531_solr
   [junit4]   2> 770168 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727237-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 770183 INFO  
(OverseerStateUpdate-74867256053727237-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 770191 WARN  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Unable to check back-compat of .system collection - can't 
obtain ClusterState.
   [junit4]   2> 772290 INFO  
(OverseerCollectionConfigSetProcessor-74867256053727237-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.OverseerTaskProcessor According to ZK I 
(id=74867256053727237-127.0.0.1:45531_solr-n_0000000000) am no longer a leader. 
propsId=null
   [junit4]   2> 772542 INFO  (closeThreadPool-2123-thread-1) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727237-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 772542 INFO  
(OverseerStateUpdate-74867256053727237-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 772561 INFO  
(OverseerAutoScalingTriggerThread-74867256053727237-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.a.OverseerTriggerThread OverseerTriggerThread woken up but we 
are closed, exiting.
   [junit4]   2> 772570 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 772608 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Ending testRemovalOfLastReplica
   [junit4]   2> 772615 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Starting testBadQueueItem
   [junit4]   2> 772751 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 772762 INFO  (zkConnectionManagerCallback-2125-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 772762 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 772766 WARN  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 transport 
since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 772767 WARN  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config Trusting all certificates configured for 
Client@5ebff23e[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 772767 WARN  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured for 
Client@5ebff23e[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 772787 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 772791 INFO  (zkConnectionManagerCallback-2132-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 772791 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 772811 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 772814 INFO  (zkConnectionManagerCallback-2137-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 772814 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 772816 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 772819 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45531_solr
   [junit4]   2> 772820 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727240-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 772827 INFO  
(OverseerStateUpdate-74867256053727240-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 772829 WARN  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Unable to check back-compat of .system collection - can't 
obtain ClusterState.
   [junit4]   2> 772836 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 772837 INFO  (zkConnectionManagerCallback-2141-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 772837 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 772847 INFO  (zkCallback-2084-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 772898 INFO  (zkCallback-2140-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 772902 INFO  (zkCallback-2124-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 772927 INFO  (zkCallback-2136-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 773034 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 773036 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
/collections/collection1/leader_elect/shard1/election/74867256053727243-127.0.0.1_core1-n_0000000000
   [junit4]   2> 773143 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard2
   [junit4]   2> 773144 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard2/leader after winning as 
/collections/collection1/leader_elect/shard2/election/74867256053727243-127.0.0.1_core2-n_0000000000
   [junit4]   2> 773257 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard3
   [junit4]   2> 773259 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard3/leader after winning as 
/collections/collection1/leader_elect/shard3/election/74867256053727243-127.0.0.1_core3-n_0000000000
   [junit4]   2> 773365 ERROR 
(OverseerStateUpdate-74867256053727240-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.o.CollectionMutator Skipping invalid Overseer message because it has 
no collection specified: {
   [junit4]   2>   "operation":"state",
   [junit4]   2>   "state":"active",
   [junit4]   2>   "node_name":"127.0.0.1",
   [junit4]   2>   "core":"core0",
   [junit4]   2>   "core_node_name":"node0",
   [junit4]   2>   "collection":"",
   [junit4]   2>   "shard":"shard1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "base_url":"http://127.0.0.1/solr/"}
   [junit4]   2> 773366 ERROR 
(OverseerStateUpdate-74867256053727240-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.o.CollectionMutator Skipping invalid Overseer message because it has 
no collection specified: {
   [junit4]   2>   "operation":"deletecore",
   [junit4]   2>   "node_name":"127.0.0.1",
   [junit4]   2>   "core":"core0",
   [junit4]   2>   "core_node_name":"node0",
   [junit4]   2>   "collection":""}
   [junit4]   2> 773473 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection2/leaders/shard1
   [junit4]   2> 773475 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection2/leaders/shard1/leader after winning as 
/collections/collection2/leader_elect/shard1/election/74867256053727243-127.0.0.1_core1-n_0000000000
   [junit4]   2> 773582 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection2/leaders/shard2
   [junit4]   2> 773584 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection2/leaders/shard2/leader after winning as 
/collections/collection2/leader_elect/shard2/election/74867256053727243-127.0.0.1_core2-n_0000000000
   [junit4]   2> 773693 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection2/leaders/shard3
   [junit4]   2> 773694 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection2/leaders/shard3/leader after winning as 
/collections/collection2/leader_elect/shard3/election/74867256053727243-127.0.0.1_core3-n_0000000000
   [junit4]   2> 773801 INFO  (zkCallback-2140-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 773801 INFO  (zkCallback-2084-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 773801 INFO  (zkCallback-2136-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 773802 INFO  (zkCallback-2124-thread-2) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 774176 INFO  (closeThreadPool-2145-thread-1) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727240-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 774176 INFO  
(OverseerStateUpdate-74867256053727240-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 774183 INFO  
(OverseerAutoScalingTriggerThread-74867256053727240-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.a.OverseerTriggerThread OverseerTriggerThread woken up but we 
are closed, exiting.
   [junit4]   2> 774194 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 774232 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Ending testBadQueueItem
   [junit4]   2> 774237 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.SolrTestCaseJ4 ###Starting testExternalClusterStateChangeBehavior
   [junit4]   2> 774300 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 774314 INFO  (zkConnectionManagerCallback-2149-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 774314 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 774323 WARN  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 
transport since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 774336 WARN  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.e.j.u.s.S.config Trusting all certificates configured for 
Client@385544be[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 774336 WARN  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm 
configured for Client@385544be[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 774353 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 774363 INFO  (zkConnectionManagerCallback-2156-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 774363 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 774378 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 774391 INFO  (zkConnectionManagerCallback-2161-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 774391 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 774392 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 
127.0.0.1:45531/solr ready
   [junit4]   2> 774394 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.OverseerElectionContext I am going to be the leader 
127.0.0.1:45531_solr
   [junit4]   2> 774395 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.Overseer Overseer 
(id=74867256053727244-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 774414 INFO  
(OverseerStateUpdate-74867256053727244-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 774431 WARN  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.c.Overseer Unable to check back-compat of .system collection - 
can't obtain ClusterState.
   [junit4]   2> 774553 INFO  
(OverseerStateUpdate-74867256053727244-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.o.SliceMutator createReplica() {
   [junit4]   2>   "operation":"addreplica",
   [junit4]   2>   "collection":"test",
   [junit4]   2>   "shard":"x",
   [junit4]   2>   "base_url":"http://127.0.0.1/solr";,
   [junit4]   2>   "core_node_name":"core_node1",
   [junit4]   2>   "node_name":"node1",
   [junit4]   2>   "core":"core1",
   [junit4]   2>   "state":"down"} 
   [junit4]   2> 774655 INFO  (zkCallback-2084-thread-1) [     ] 
o.a.s.c.c.ZkStateReader A cluster state change: [WatchedEvent 
state:SyncConnected type:NodeCreated path:/collections/test/state.json] for 
collection [test] has occurred - updating... (live nodes size: [0])
   [junit4]   2> 774656 ERROR 
(OverseerStateUpdate-74867256053727244-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Exception in Overseer main queue loop
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$BadVersionException: KeeperErrorCode = 
BadVersion for /clusterstate.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:122)
   [junit4]   2> org.apache.zookeeper.KeeperException$BadVersionException: 
KeeperErrorCode = BadVersion for /clusterstate.json
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:122) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.setData(ZooKeeper.java:2384) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$setData$6(SolrZkClient.java:349)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.setData(SolrZkClient.java:349) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:220)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:259) 
~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 775013 INFO  (closeThreadPool-2163-thread-1) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727244-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 775014 INFO  
(OverseerStateUpdate-74867256053727244-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 775021 INFO  
(OverseerAutoScalingTriggerThread-74867256053727244-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.a.OverseerTriggerThread OverseerTriggerThread woken up but we 
are closed, exiting.
   [junit4]   2> 775024 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 775059 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[4F0A3CA46E6BCCE7])
 [     ] o.a.s.SolrTestCaseJ4 ###Ending testExternalClusterStateChangeBehavior
   [junit4]   2> 775083 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Starting testReplay
   [junit4]   2> 775180 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 775195 INFO  (zkConnectionManagerCallback-2167-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 775195 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 775214 WARN  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 transport 
since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 775235 WARN  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config Trusting all certificates configured for 
Client@4e8d5b59[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 775235 WARN  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured for 
Client@4e8d5b59[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 775245 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 775255 INFO  (zkConnectionManagerCallback-2174-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 775255 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 775272 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 775278 INFO  (zkConnectionManagerCallback-2179-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 775279 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 775280 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 775282 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45531_solr
   [junit4]   2> 775283 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] o.a.s.c.Overseer 
Overseer (id=74867256053727247-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 775300 INFO  
(OverseerStateUpdate-74867256053727247-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 775311 WARN  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] o.a.s.c.Overseer 
Unable to check back-compat of .system collection - can't obtain ClusterState.
   [junit4]   2> 775782 INFO  (closeThreadPool-2181-thread-1) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727247-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 775782 INFO  
(OverseerStateUpdate-74867256053727247-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 775782 INFO  
(OverseerAutoScalingTriggerThread-74867256053727247-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.a.OverseerTriggerThread OverseerTriggerThread woken up but we 
are closed, exiting.
   [junit4]   2> 775802 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 775843 INFO  
(TEST-OverseerTest.testReplay-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Ending testReplay
   [junit4]   2> 775850 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Starting testShardAssignment
   [junit4]   2> 775989 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 776000 INFO  (zkConnectionManagerCallback-2183-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 776000 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 776021 WARN  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 transport 
since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 776035 WARN  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config Trusting all certificates configured for 
Client@35648d3a[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 776035 WARN  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured for 
Client@35648d3a[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 776052 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 776062 INFO  (zkConnectionManagerCallback-2190-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 776062 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 776079 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 776083 INFO  (zkConnectionManagerCallback-2195-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 776083 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 776084 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 776086 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45531_solr
   [junit4]   2> 776087 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727250-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 776110 INFO  
(OverseerStateUpdate-74867256053727250-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 776115 WARN  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Unable to check back-compat of .system collection - can't 
obtain ClusterState.
   [junit4]   2> 776146 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 776156 INFO  (zkConnectionManagerCallback-2199-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 776156 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 776172 INFO  (zkCallback-2084-thread-3) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 776191 INFO  (zkCallback-2182-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 776191 INFO  (zkCallback-2194-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 776207 INFO  (zkCallback-2198-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 776346 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 776347 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
/collections/collection1/leader_elect/shard1/election/74867256053727253-127.0.0.1_core1-n_0000000000
   [junit4]   2> 776454 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard2
   [junit4]   2> 776455 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard2/leader after winning as 
/collections/collection1/leader_elect/shard2/election/74867256053727253-127.0.0.1_core2-n_0000000000
   [junit4]   2> 776567 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard3
   [junit4]   2> 776569 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard3/leader after winning as 
/collections/collection1/leader_elect/shard3/election/74867256053727253-127.0.0.1_core3-n_0000000000
   [junit4]   2> 776684 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 776802 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard2
   [junit4]   2> 776920 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard3
   [junit4]   2> 776955 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase No version found for ephemeral leader 
parent node, won't remove previous leader registration.
   [junit4]   2> 776956 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase No version found for ephemeral leader 
parent node, won't remove previous leader registration.
   [junit4]   2> 776956 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase No version found for ephemeral leader 
parent node, won't remove previous leader registration.
   [junit4]   2> 776966 WARN  (zkCallback-2198-thread-1) [     ] 
o.a.s.c.LeaderElector Our node is no longer in line to be leader
   [junit4]   2> 776968 WARN  (zkCallback-2198-thread-1) [     ] 
o.a.s.c.LeaderElector Our node is no longer in line to be leader
   [junit4]   2> 776969 WARN  (zkCallback-2198-thread-1) [     ] 
o.a.s.c.LeaderElector Our node is no longer in line to be leader
   [junit4]   2> 776970 INFO  (zkCallback-2194-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 776970 INFO  (zkCallback-2084-thread-3) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 776971 INFO  (zkCallback-2198-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 777072 INFO  (zkCallback-2182-thread-2) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 777447 INFO  (closeThreadPool-2203-thread-1) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727250-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 777447 INFO  
(OverseerStateUpdate-74867256053727250-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 777453 INFO  
(OverseerAutoScalingTriggerThread-74867256053727250-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.a.OverseerTriggerThread OverseerTriggerThread woken up but we 
are closed, exiting.
   [junit4]   2> 777479 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 777511 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Ending testShardAssignment
   [junit4]   2> 777519 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.SolrTestCaseJ4 ###Starting testShardLeaderChange
   [junit4]   2> 777601 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Waiting for client to connect to ZooKeeper
   [junit4]   2> 777605 INFO  (zkConnectionManagerCallback-2207-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 777605 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Client is connected to ZooKeeper
   [junit4]   2> 777607 WARN  (Thread-689) [     ] o.a.s.c.s.i.Http2SolrClient 
Create Http2SolrClient with HTTP/1.1 transport since Java 8 or lower versions 
does not support SSL + HTTP/2
   [junit4]   2> 777608 WARN  (Thread-689) [     ] o.e.j.u.s.S.config Trusting 
all certificates configured for 
Client@51302465[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 777608 WARN  (Thread-689) [     ] o.e.j.u.s.S.config No Client 
EndPointIdentificationAlgorithm configured for 
Client@51302465[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 777609 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 transport 
since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 777611 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config Trusting all certificates configured for 
Client@55545608[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 777611 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured for 
Client@55545608[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 777612 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Waiting for client to connect to ZooKeeper
   [junit4]   2> 777615 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 777617 INFO  (zkConnectionManagerCallback-2216-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 777617 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Client is connected to ZooKeeper
   [junit4]   2> 777619 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Waiting for client to connect to ZooKeeper
   [junit4]   2> 777623 INFO  (zkConnectionManagerCallback-2224-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 777623 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Client is connected to ZooKeeper
   [junit4]   2> 777634 INFO  (Thread-689) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 777636 INFO  (Thread-689) [     ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45531_solr
   [junit4]   2> 777639 INFO  (Thread-689) [     ] o.a.s.c.Overseer Overseer 
(id=74867256053727254-127.0.0.1:45531_solr-n_0000000000) starting
   [junit4]   2> 777643 INFO  (zkConnectionManagerCallback-2219-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 777643 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 777647 INFO  
(OverseerStateUpdate-74867256053727254-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 777661 WARN  (Thread-689) [     ] o.a.s.c.Overseer Unable to 
check back-compat of .system collection - can't obtain ClusterState.
   [junit4]   2> 777662 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727254-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 777662 INFO  
(OverseerCollectionConfigSetProcessor-74867256053727254-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.OverseerTaskProcessor According to ZK I 
(id=74867256053727254-127.0.0.1:45531_solr-n_0000000000) am no longer a leader. 
propsId=null
   [junit4]   2> 777662 ERROR 
(OverseerCollectionConfigSetProcessor-74867256053727254-127.0.0.1:45531_solr-n_0000000000)
 [     ] o.a.s.c.OverseerTaskProcessor Unable to prioritize overseer 
   [junit4]   2>           => java.lang.InterruptedException
   [junit4]   2>        at java.lang.Object.wait(Native Method)
   [junit4]   2> java.lang.InterruptedException: null
   [junit4]   2>        at java.lang.Object.wait(Native Method) ~[?:1.8.0_191]
   [junit4]   2>        at java.lang.Object.wait(Object.java:502) ~[?:1.8.0_191]
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1529) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1512) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:2016) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$exists$3(SolrZkClient.java:313)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:313) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerNodePrioritizer.prioritizeOverseerNodes(OverseerNodePrioritizer.java:68)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:187) 
~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 777665 INFO  
(OverseerStateUpdate-74867256053727254-127.0.0.1:45531_solr-n_0000000000) [     
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45531_solr
   [junit4]   2> 777693 WARN  (OverseerExitThread) [     ] o.a.s.c.Overseer 
Error communicating with ZooKeeper
   [junit4]   2>           => 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = 
Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134)
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:134) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:54) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:2131) 
~[zookeeper-3.5.5.jar:3.5.5]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.lambda$getData$5(SolrZkClient.java:337)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
 ~[java/:?]
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:337) 
~[java/:?]
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:331)
 ~[java/:?]
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
   [junit4]   2> 777799 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.Http2SolrClient Create Http2SolrClient with HTTP/1.1 transport 
since Java 8 or lower versions does not support SSL + HTTP/2
   [junit4]   2> 777811 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config Trusting all certificates configured for 
Client@520e8aa8[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 777811 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.e.j.u.s.S.config No Client EndPointIdentificationAlgorithm configured for 
Client@520e8aa8[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 777819 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 777831 INFO  (zkConnectionManagerCallback-2231-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 777831 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 777869 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 777894 INFO  (zkConnectionManagerCallback-2236-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 777894 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 777909 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 777910 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45531_solr
   [junit4]   2> 777911 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Overseer 
(id=74867256053727257-127.0.0.1:45531_solr-n_0000000001) starting
   [junit4]   2> 777949 INFO  
(OverseerStateUpdate-74867256053727257-127.0.0.1:45531_solr-n_0000000001) [     
] o.a.s.c.Overseer Starting to work on the main queue : 127.0.0.1:45531_solr
   [junit4]   2> 777953 WARN  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.Overseer Unable to check back-compat of .system collection - can't 
obtain ClusterState.
   [junit4]   2> 777969 INFO  (Thread-689) [     ] o.a.s.c.OverseerTest Killing 
overseer.
   [junit4]   2> 777981 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 778007 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Waiting for client to connect to ZooKeeper
   [junit4]   2> 778034 INFO  (zkConnectionManagerCallback-2238-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 778034 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 778047 INFO  (zkConnectionManagerCallback-2240-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 778047 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Client is connected to ZooKeeper
   [junit4]   2> 778048 INFO  (Thread-689) [     ] o.a.s.c.Overseer Overseer 
(id=74867256053727254-127.0.0.1:45531_solr-n_0000000000) closing
   [junit4]   2> 778055 WARN  (Thread-689) [     ] o.a.s.c.s.i.Http2SolrClient 
Create Http2SolrClient with HTTP/1.1 transport since Java 8 or lower versions 
does not support SSL + HTTP/2
   [junit4]   2> 778059 INFO  (zkCallback-2084-thread-3) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778067 WARN  (Thread-689) [     ] o.e.j.u.s.S.config Trusting 
all certificates configured for 
Client@3eed8360[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 778067 WARN  (Thread-689) [     ] o.e.j.u.s.S.config No Client 
EndPointIdentificationAlgorithm configured for 
Client@3eed8360[provider=null,keyStore=null,trustStore=null]
   [junit4]   2> 778083 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Waiting for client to connect to ZooKeeper
   [junit4]   2> 778095 INFO  (zkCallback-2218-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778119 INFO  (zkCallback-2235-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778123 INFO  (zkCallback-2223-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778139 INFO  (zkCallback-2237-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778147 INFO  (zkConnectionManagerCallback-2249-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 778147 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Client is connected to ZooKeeper
   [junit4]   2> 778195 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Waiting for client to connect to ZooKeeper
   [junit4]   2> 778247 INFO  (zkConnectionManagerCallback-2254-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 778247 INFO  (Thread-689) [     ] o.a.s.c.c.ConnectionManager 
Client is connected to ZooKeeper
   [junit4]   2> 778248 ERROR (Finalizer) [     ] o.a.s.c.CoreContainer 
CoreContainer was not close prior to finalize(), indicates a bug -- POSSIBLE 
RESOURCE LEAK!!!  instance=2013987747
   [junit4]   2> 778248 ERROR (Finalizer) [     ] o.a.s.c.CoreContainer 
CoreContainer was not close prior to finalize(), indicates a bug -- POSSIBLE 
RESOURCE LEAK!!!  instance=1086989557
   [junit4]   2> 778248 ERROR (Finalizer) [     ] o.a.s.c.CoreContainer 
CoreContainer was not close prior to finalize(), indicates a bug -- POSSIBLE 
RESOURCE LEAK!!!  instance=1236901821
   [junit4]   2> 778248 ERROR (Finalizer) [     ] o.a.s.c.CoreContainer 
CoreContainer was not close prior to finalize(), indicates a bug -- POSSIBLE 
RESOURCE LEAK!!!  instance=949151302
   [junit4]   2> 778248 ERROR (Finalizer) [     ] o.a.s.c.CoreContainer 
CoreContainer was not close prior to finalize(), indicates a bug -- POSSIBLE 
RESOURCE LEAK!!!  instance=405077228
   [junit4]   2> 778248 ERROR (Finalizer) [     ] o.a.s.c.CoreContainer 
CoreContainer was not close prior to finalize(), indicates a bug -- POSSIBLE 
RESOURCE LEAK!!!  instance=165191313
   [junit4]   2> 778248 INFO  (Thread-689) [     ] o.a.s.c.c.ZkStateReader 
Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778249 INFO  (Thread-689) [     ] 
o.a.s.c.s.i.ZkClientClusterStateProvider Cluster at 127.0.0.1:45531/solr ready
   [junit4]   2> 778294 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 778297 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
/collections/collection1/leader_elect/shard1/election/74867256053727260-node1_core1-n_0000000000
   [junit4]   2> 778412 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 778413 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
/collections/collection1/leader_elect/shard1/election/74867256053727260-node1_core1-n_0000000001
   [junit4]   2> 778435 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 778451 INFO  (zkConnectionManagerCallback-2256-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 778451 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 778470 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 778472 INFO  (zkCallback-2253-thread-2) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778472 INFO  (zkCallback-2223-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778472 INFO  (zkCallback-2235-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778472 INFO  (zkCallback-2084-thread-3) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778473 INFO  (zkCallback-2218-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778474 INFO  (zkCallback-2237-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778476 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 778479 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
/collections/collection1/leader_elect/shard1/election/74867256053727260-node1_core1-n_0000000002
   [junit4]   2> 778507 INFO  (zkCallback-2255-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 778601 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.ShardLeaderElectionContextBase make sure parent is created 
/collections/collection1/leaders/shard1
   [junit4]   2> 778603 INFO  (zkCallback-2255-thread-1) [     ] 
o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
/collections/collection1/leader_elect/shard1/election/74867256053727264-node2_core4-n_0000000003
   [junit4]   2> 778604 INFO  (zkCallback-2255-thread-1) [     ] 
o.a.s.c.u.RetryUtil Retry due to Throwable, 
org.apache.zookeeper.KeeperException$NodeExistsException KeeperErrorCode = 
NodeExists
   [junit4]   2> 778618 INFO  (zkCallback-2237-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778618 INFO  (zkCallback-2223-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778618 INFO  (zkCallback-2235-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778618 INFO  (zkCallback-2218-thread-1) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778618 INFO  (zkCallback-2084-thread-3) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778618 INFO  (zkCallback-2253-thread-2) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778626 INFO  (zkCallback-2255-thread-2) [     ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 778751 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
   [junit4]   2> 778761 INFO  (zkConnectionManagerCallback-2260-thread-1) [     
] o.a.s.c.c.ConnectionManager zkClient has connected
   [junit4]   2> 778761 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Client is connected to ZooKeeper
   [junit4]   2> 778766 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[4F0A3CA46E6BCCE7]) [     ] 
o.a.s.c.c.ConnectionManager Waiting for client to connect to ZooKeeper
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o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
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Waiting for client to connect to ZooKeeper
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(OverseerStateUpdate-74867256053727257-127.0.0.1:45531_solr-n_0000000001) [     
] o.a.s.c.o.ClusterStateMutator Collection collection1 already exists. exit
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Client is connected to ZooKeeper
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(id=74867256053727254-127.0.0.1:45531_solr-n_0000000000) closing
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Create Http2SolrClient with HTTP/1.1 transport since Java 8 or lower versions 
does not support SSL + HTTP/2
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/collections/collection1/leaders/shard1
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o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
/collections/collection1/leaders/shard1/leader after winning as 
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o.a.s.c.u.RetryUtil Retry due to Throwable, 
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NodeExists
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all certificates configured for 
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Waiting for client to connect to ZooKeeper
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Client is connected to ZooKeeper
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Updated live nodes from ZooKeeper... (0) -> (1)
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parent node, won't remove previous leader registration.
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o.a.s.c.ShardLeaderElectionContextBase Creating leader registration node 
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jar-checksums:
    [mkdir] Created dir: 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-8.x/solr/null328340605
     [copy] Copying 248 files to 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-8.x/solr/null328340605
   [delete] Deleting directory 
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-8.x/solr/null328340605

check-working-copy:
[ivy:cachepath] :: resolving dependencies :: 
#;[email protected]
[ivy:cachepath]         confs: [default]
[ivy:cachepath]         found 
org.eclipse.jgit#org.eclipse.jgit;5.3.0.201903130848-r in public
[ivy:cachepath]         found com.jcraft#jsch;0.1.54 in public
[ivy:cachepath]         found com.jcraft#jzlib;1.1.1 in public
[ivy:cachepath]         found com.googlecode.javaewah#JavaEWAH;1.1.6 in public
[ivy:cachepath]         found org.slf4j#slf4j-api;1.7.2 in public
[ivy:cachepath]         found org.bouncycastle#bcpg-jdk15on;1.60 in public
[ivy:cachepath]         found org.bouncycastle#bcprov-jdk15on;1.60 in public
[ivy:cachepath]         found org.bouncycastle#bcpkix-jdk15on;1.60 in public
[ivy:cachepath]         found org.slf4j#slf4j-nop;1.7.2 in public
[ivy:cachepath] :: resolution report :: resolve 27ms :: artifacts dl 2ms
        ---------------------------------------------------------------------
        |                  |            modules            ||   artifacts   |
        |       conf       | number| search|dwnlded|evicted|| number|dwnlded|
        ---------------------------------------------------------------------
        |      default     |   9   |   0   |   0   |   0   ||   9   |   0   |
        ---------------------------------------------------------------------
[wc-checker] Initializing working copy...
[wc-checker] Checking working copy status...

-jenkins-base:

BUILD SUCCESSFUL
Total time: 279 minutes 17 seconds
Archiving artifacts
java.lang.InterruptedException: no matches found within 10000
        at hudson.FilePath$ValidateAntFileMask.hasMatch(FilePath.java:2847)
        at hudson.FilePath$ValidateAntFileMask.invoke(FilePath.java:2726)
        at hudson.FilePath$ValidateAntFileMask.invoke(FilePath.java:2707)
        at hudson.FilePath$FileCallableWrapper.call(FilePath.java:3086)
Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to lucene2
                at 
hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
                at 
hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357)
                at hudson.remoting.Channel.call(Channel.java:955)
                at hudson.FilePath.act(FilePath.java:1072)
                at hudson.FilePath.act(FilePath.java:1061)
                at hudson.FilePath.validateAntFileMask(FilePath.java:2705)
                at 
hudson.tasks.ArtifactArchiver.perform(ArtifactArchiver.java:243)
                at 
hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:81)
                at 
hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
                at 
hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
                at 
hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
                at hudson.model.Build$BuildExecution.post2(Build.java:186)
                at 
hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
                at hudson.model.Run.execute(Run.java:1835)
                at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
                at 
hudson.model.ResourceController.execute(ResourceController.java:97)
                at hudson.model.Executor.run(Executor.java:429)
Caused: hudson.FilePath$TunneledInterruptedException
        at hudson.FilePath$FileCallableWrapper.call(FilePath.java:3088)
        at hudson.remoting.UserRequest.perform(UserRequest.java:212)
        at hudson.remoting.UserRequest.perform(UserRequest.java:54)
        at hudson.remoting.Request$2.run(Request.java:369)
        at 
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)
Caused: java.lang.InterruptedException: java.lang.InterruptedException: no 
matches found within 10000
        at hudson.FilePath.act(FilePath.java:1074)
        at hudson.FilePath.act(FilePath.java:1061)
        at hudson.FilePath.validateAntFileMask(FilePath.java:2705)
        at hudson.tasks.ArtifactArchiver.perform(ArtifactArchiver.java:243)
        at 
hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:81)
        at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
        at 
hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
        at 
hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
        at hudson.model.Build$BuildExecution.post2(Build.java:186)
        at 
hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
        at hudson.model.Run.execute(Run.java:1835)
        at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
        at hudson.model.ResourceController.execute(ResourceController.java:97)
        at hudson.model.Executor.run(Executor.java:429)
No artifacts found that match the file pattern 
"**/*.events,heapdumps/**,**/hs_err_pid*". Configuration error?
Recording test results
Build step 'Publish JUnit test result report' changed build result to UNSTABLE
Email was triggered for: Unstable (Test Failures)
Sending email for trigger: Unstable (Test Failures)
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