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From Policeman Jenkins Server <jenk...@thetaphi.de>
Subject [JENKINS] Lucene-Solr-trunk-Linux (64bit/jdk1.8.0_20-ea-b11) - Build # 10280 - Still Failing!
Date Sun, 11 May 2014 15:44:52 GMT
Build: http://jenkins.thetaphi.de/job/Lucene-Solr-trunk-Linux/10280/
Java: 64bit/jdk1.8.0_20-ea-b11 -XX:-UseCompressedOops -XX:+UseG1GC

1 tests failed.
REGRESSION:  org.apache.solr.cloud.OverseerTest.testOverseerFailure

Error Message:
KeeperErrorCode = NoNode for /collections/collection1/leader_elect/shard1/election

Stack Trace:
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /collections/collection1/leader_elect/shard1/election
	at __randomizedtesting.SeedInfo.seed([329CEF737853B966:369460806AF65647]:0)
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:260)
	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:257)
	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
	at org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:257)
	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:94)
	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:134)
	at org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:267)
	at org.apache.solr.cloud.OverseerTest$MockZKController.publishState(OverseerTest.java:155)
	at org.apache.solr.cloud.OverseerTest.testOverseerFailure(OverseerTest.java:661)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1618)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:827)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:863)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:877)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:53)
	at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
	at org.apache.lucene.util.TestRuleFieldCacheSanity$1.evaluate(TestRuleFieldCacheSanity.java:51)
	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:55)
	at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:360)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:793)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:453)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:836)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:738)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:772)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:783)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:53)
	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
	at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:55)
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
	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:43)
	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
	at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:360)
	at java.lang.Thread.run(Thread.java:745)




Build Log:
[...truncated 10601 lines...]
   [junit4] Suite: org.apache.solr.cloud.OverseerTest
   [junit4]   2> Creating dataDir: /mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/solr/build/solr-core/test/J0/./solr.cloud.OverseerTest-329CEF737853B966-001/init-core-data-001
   [junit4]   2> 1600 T16 oas.SolrTestCaseJ4.buildSSLConfig Randomized ssl (false) and clientAuth (true)
   [junit4]   2> 1600 T16 oas.SolrTestCaseJ4.initCore ####initCore
   [junit4]   2> 1601 T16 oas.SolrTestCaseJ4.initCore ####initCore end
   [junit4]   2> 1610 T16 oas.SolrTestCaseJ4.setUp ###Starting testStateChange
   [junit4]   2> 1614 T16 oasc.ZkTestServer.run STARTING ZK TEST SERVER
   [junit4]   1> client port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 1623 T17 oasc.ZkTestServer$ZKServerMain.runFromConfig Starting server
   [junit4]   2> 1717 T16 oasc.ZkTestServer.run start zk server on port:43664
   [junit4]   2> 1790 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 1871 T18 oazs.NIOServerCnxn.doIO WARN Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
   [junit4]   2> 3453 T22 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@559e868b name:ZooKeeperConnection Watcher:127.0.0.1:43664/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 3454 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 3456 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 3460 T25 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@43c11099 name:ZooKeeperConnection Watcher:127.0.0.1:43664 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 3460 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 3474 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 3481 T27 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@23bb0d79 name:ZooKeeperConnection Watcher:127.0.0.1:43664 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 3481 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 3483 T16 oascc.SolrZkClient.makePath makePath: /solr
   [junit4]   2> 3493 T16 oascc.SolrZkClient.makePath makePath: /live_nodes
   [junit4]   2> 3577 T16 oascc.SolrZkClient.makePath makePath: /clusterstate.json
   [junit4]   2> 3581 T16 oascc.SolrZkClient.makePath makePath: /aliases.json
   [junit4]   2> 3584 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 3601 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 3603 T29 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@1cfa857e name:ZooKeeperConnection Watcher:127.0.0.1:43664/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 3604 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 3640 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect
   [junit4]   2> 3644 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/election
   [junit4]   2> 3657 T16 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:43664_solr
   [junit4]   2> 3657 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 3663 T16 oasc.Overseer.start Overseer (id=91738715168702467-127.0.0.1:43664_solr-n_0000000000) starting
   [junit4]   2> 3673 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue
   [junit4]   2> 3678 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue-work
   [junit4]   2> 3685 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-failure
   [junit4]   2> 3691 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-running
   [junit4]   2> 3700 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-completed
   [junit4]   2> 3729 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-queue-work
   [junit4]   2> 3737 T31 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 3740 T31 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:43664_solr
   [junit4]   2> 3758 T30 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 3761 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 3770 T30 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 3772 T30 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=null message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "base_url":"http://127.0.0.1/solr",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "roles":"",
   [junit4]   2> 	  "state":"recovering"}
   [junit4]   2> 3774 T30 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard1
   [junit4]   2> 3785 T29 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 3791 T22 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 0)
   [junit4]   2> 3818 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 3821 T29 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 3823 T30 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 3825 T30 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=null message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "base_url":"http://127.0.0.1/solr",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "roles":"",
   [junit4]   2> 	  "state":"active"}
   [junit4]   2> 3825 T30 oasc.Overseer$ClusterStateUpdater.updateState node=core_node1 is already registered
   [junit4]   2> 3825 T30 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 3830 T29 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 3933 T22 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 0)
   [junit4]   2> 3976 T16 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:43664 43664
   [junit4]   2> 4167 T17 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:43664 43664
   [junit4]   2> 4169 T16 oas.SolrTestCaseJ4.tearDown ###Ending testStateChange
   [junit4]   2> 4170 T30 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:43664_solr
   [junit4]   2> 4174 T32 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 4182 T16 oas.SolrTestCaseJ4.setUp ###Starting testDoubleAssignment
   [junit4]   2> 4183 T16 oasc.ZkTestServer.run STARTING ZK TEST SERVER
   [junit4]   1> client port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 4184 T33 oasc.ZkTestServer$ZKServerMain.runFromConfig Starting server
   [junit4]   2> 4284 T16 oasc.ZkTestServer.run start zk server on port:58612
   [junit4]   2> 4285 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 4290 T39 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@61dc3aeb name:ZooKeeperConnection Watcher:127.0.0.1:58612/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 4291 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 4291 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 4293 T41 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@58aa41df name:ZooKeeperConnection Watcher:127.0.0.1:58612 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 4294 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 4296 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 4302 T43 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@5e6e0cbc name:ZooKeeperConnection Watcher:127.0.0.1:58612 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 4302 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 4303 T16 oascc.SolrZkClient.makePath makePath: /solr
   [junit4]   2> 4307 T16 oascc.SolrZkClient.makePath makePath: /live_nodes
   [junit4]   2> 4312 T16 oascc.SolrZkClient.makePath makePath: /clusterstate.json
   [junit4]   2> 4314 T16 oascc.SolrZkClient.makePath makePath: /aliases.json
   [junit4]   2> 4316 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 4320 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 4322 T45 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@37c628fc name:ZooKeeperConnection Watcher:127.0.0.1:58612/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 4322 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 4324 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 4326 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node1
   [junit4]   2> 4329 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 4331 T47 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@374d578d name:ZooKeeperConnection Watcher:127.0.0.1:58612/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 4331 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 4332 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect
   [junit4]   2> 4335 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/election
   [junit4]   2> 4340 T16 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:58612_solr
   [junit4]   2> 4341 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 4344 T16 oasc.Overseer.start Overseer (id=91738715329855492-127.0.0.1:58612_solr-n_0000000000) starting
   [junit4]   2> 4346 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue
   [junit4]   2> 4350 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue-work
   [junit4]   2> 4358 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-failure
   [junit4]   2> 4361 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-running
   [junit4]   2> 4366 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-completed
   [junit4]   2> 4372 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-queue-work
   [junit4]   2> 4378 T49 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 4380 T49 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:58612_solr
   [junit4]   2> 4381 T48 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 4392 T48 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 4400 T48 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"recovering",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"core_node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 4401 T48 oasc.Overseer$ClusterStateUpdater.createCollection Create collection collection1 with shards [shard1]
   [junit4]   2> 4403 T48 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard1
   [junit4]   2> 4407 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 4408 T45 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 4409 T39 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 4891 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 4910 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 4917 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 4919 T48 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 4921 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 4925 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 4930 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 4933 T51 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@3de34c02 name:ZooKeeperConnection Watcher:127.0.0.1:58612/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 4934 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 4935 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 4946 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node1
   [junit4]   2> 4958 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 4958 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 4960 T48 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"recovering",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"core_node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 4960 T48 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 4964 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 4968 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 4975 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 4990 T47 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 5094 T51 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 5095 T39 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 5098 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 5120 T16 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:58612 58612
   [junit4]   2> 5448 T33 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:58612 58612
   [junit4]   2> 5451 T16 oas.SolrTestCaseJ4.tearDown ###Ending testDoubleAssignment
   [junit4]   2> 5452 T48 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:58612_solr
   [junit4]   2> 5453 T52 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 5469 T16 oas.SolrTestCaseJ4.setUp ###Starting testOverseerFailure
   [junit4]   2> 5470 T16 oasc.ZkTestServer.run STARTING ZK TEST SERVER
   [junit4]   1> client port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 5474 T53 oasc.ZkTestServer$ZKServerMain.runFromConfig Starting server
   [junit4]   2> 5573 T16 oasc.ZkTestServer.run start zk server on port:39664
   [junit4]   2> 5575 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 5580 T59 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@48ed3ba8 name:ZooKeeperConnection Watcher:127.0.0.1:39664 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 5581 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 5584 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 5589 T61 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@6f49edeb name:ZooKeeperConnection Watcher:127.0.0.1:39664 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 5590 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 5590 T16 oascc.SolrZkClient.makePath makePath: /solr
   [junit4]   2> 5596 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 5598 T63 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@49ce1d30 name:ZooKeeperConnection Watcher:127.0.0.1:39664/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 5599 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 5599 T16 oascc.SolrZkClient.makePath makePath: /live_nodes
   [junit4]   2> 5606 T16 oascc.SolrZkClient.makePath makePath: /clusterstate.json
   [junit4]   2> 5609 T16 oascc.SolrZkClient.makePath makePath: /aliases.json
   [junit4]   2> 5611 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 5614 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 5617 T65 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@53289fdc name:ZooKeeperConnection Watcher:127.0.0.1:39664/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 5617 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 5631 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 5636 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node1
   [junit4]   2> 5666 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 5674 T67 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@7239ce6a name:ZooKeeperConnection Watcher:127.0.0.1:39664/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 5675 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 5678 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect
   [junit4]   2> 5685 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/election
   [junit4]   2> 5708 T16 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:39664_solr
   [junit4]   2> 5709 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 5713 T16 oasc.Overseer.start Overseer (id=91738715414462468-127.0.0.1:39664_solr-n_0000000000) starting
   [junit4]   2> 5719 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue
   [junit4]   2> 5723 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue-work
   [junit4]   2> 5728 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-failure
   [junit4]   2> 5737 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-running
   [junit4]   2> 5741 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-completed
   [junit4]   2> 5747 T16 oascc.SolrZkClient.makePath makePath: /overseer/collection-queue-work
   [junit4]   2> 5754 T69 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 5755 T69 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:39664_solr
   [junit4]   2> 5756 T68 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 6759 T67 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 6761 T68 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 6762 T68 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"recovering",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"core_node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 6762 T68 oasc.Overseer$ClusterStateUpdater.createCollection Create collection collection1 with shards [shard1]
   [junit4]   2> 6763 T68 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard1
   [junit4]   2> 6767 T67 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 6768 T63 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 6769 T65 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 7259 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 7279 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 7289 T67 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 7291 T68 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 7291 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 7294 T67 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 7298 T67 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 7299 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 7300 T68 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"active",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"core_node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 7301 T68 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 7313 T67 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 7417 T63 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 7417 T65 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 8474 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 8481 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 8493 T71 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@523f4373 name:ZooKeeperConnection Watcher:127.0.0.1:39664/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 8496 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 8497 T68 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:39664_solr
   [junit4]   2> 8502 T72 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 8506 T16 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:39664_solr
   [junit4]   2> 8507 T16 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 8510 T16 oasc.Overseer.start Overseer (id=91738715414462469-127.0.0.1:39664_solr-n_0000000001) starting
   [junit4]   2> 8519 T73 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 8521 T73 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 8524 T73 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"recovering",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"core_node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 8525 T73 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 8526 T74 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 8528 T74 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:39664_solr
   [junit4]   2> 8530 T71 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 8531 T65 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 8539 T63 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 8593 T71 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 8593 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 8595 T73 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 8607 T65 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 8610 T65 oasc.LeaderElector$ElectionWatcher.process WARN  org.apache.solr.common.SolrException: Could not register as the leader because creating the ephemeral registration node in ZooKeeper failed
   [junit4]   2> 	at org.apache.solr.cloud.ShardLeaderElectionContextBase.runLeaderProcess(ElectionContext.java:135)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:142)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:110)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.access$200(LeaderElector.java:55)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector$ElectionWatcher.process(LeaderElector.java:303)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
   [junit4]   2> Caused by: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /collections/collection1/leaders
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$10.execute(SolrZkClient.java:432)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:429)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:386)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:373)
   [junit4]   2> 	at org.apache.solr.cloud.ShardLeaderElectionContextBase$1.execute(ElectionContext.java:127)
   [junit4]   2> 	at org.apache.solr.common.util.RetryUtil.retryOnThrowable(RetryUtil.java:31)
   [junit4]   2> 	at org.apache.solr.cloud.ShardLeaderElectionContextBase.runLeaderProcess(ElectionContext.java:122)
   [junit4]   2> 	... 6 more
   [junit4]   2> 
   [junit4]   2> 8613 T65 oasc.LeaderElector$ElectionWatcher.process WARN  org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:260)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:94)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.access$200(LeaderElector.java:55)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector$ElectionWatcher.process(LeaderElector.java:303)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
   [junit4]   2> 
   [junit4]   2> 8615 T71 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 8622 T16 oasc.LeaderElector.checkIfIamLeader WARN Failed setting watch org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /collections/collection1/leader_elect/shard1/election/91738715414462467-node1_core1-n_0000000002
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:127)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:267)
   [junit4]   2> 	at org.apache.solr.cloud.OverseerTest$MockZKController.publishState(OverseerTest.java:155)
   [junit4]   2> 	at org.apache.solr.cloud.OverseerTest.testOverseerFailure(OverseerTest.java:661)
   [junit4]   2> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   [junit4]   2> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   [junit4]   2> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   [junit4]   2> 	at java.lang.reflect.Method.invoke(Method.java:483)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1618)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:827)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:863)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:877)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:53)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleFieldCacheSanity$1.evaluate(TestRuleFieldCacheSanity.java:51)
   [junit4]   2> 	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:55)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:360)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:793)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:453)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:836)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:738)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:772)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:783)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:53)
   [junit4]   2> 	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:55)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:43)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
   [junit4]   2> 	at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2> 	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:360)
   [junit4]   2> 	at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> 
   [junit4]   2> 8636 T16 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:39664 39664
   [junit4]   2> 8718 T73 oasc.Overseer$ClusterStateUpdater.run WARN Solr cannot talk to ZK, exiting Overseer main queue loop org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer/queue
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:260)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.cloud.DistributedQueue.orderedChildren(DistributedQueue.java:96)
   [junit4]   2> 	at org.apache.solr.cloud.DistributedQueue.peek(DistributedQueue.java:455)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:261)
   [junit4]   2> 	at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> 
   [junit4]   2> 8941 T73 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:39664_solr
   [junit4]   2> 8943 T53 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:39664 39664
   [junit4]   2> 8944 T75 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 8945 T16 oas.SolrTestCaseJ4.tearDown ###Ending testOverseerFailure
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=OverseerTest -Dtests.method=testOverseerFailure -Dtests.seed=329CEF737853B966 -Dtests.multiplier=3 -Dtests.slow=true -Dtests.locale=de_CH -Dtests.timezone=Africa/Kigali -Dtests.file.encoding=UTF-8
   [junit4] ERROR   3.51s J0 | OverseerTest.testOverseerFailure <<<
   [junit4]    > Throwable #1: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /collections/collection1/leader_elect/shard1/election
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([329CEF737853B966:369460806AF65647]:0)
   [junit4]    > 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
   [junit4]    > 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]    > 	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
   [junit4]    > 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:260)
   [junit4]    > 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:257)
   [junit4]    > 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]    > 	at org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:257)
   [junit4]    > 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:94)
   [junit4]    > 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:134)
   [junit4]    > 	at org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:267)
   [junit4]    > 	at org.apache.solr.cloud.OverseerTest$MockZKController.publishState(OverseerTest.java:155)
   [junit4]    > 	at org.apache.solr.cloud.OverseerTest.testOverseerFailure(OverseerTest.java:661)
   [junit4]    > 	at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> 8976 T16 oas.SolrTestCaseJ4.setUp ###Starting testShardLeaderChange
   [junit4]   2> 8978 T16 oasc.ZkTestServer.run STARTING ZK TEST SERVER
   [junit4]   1> client port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 8985 T76 oasc.ZkTestServer$ZKServerMain.runFromConfig Starting server
   [junit4]   2> 9084 T16 oasc.ZkTestServer.run start zk server on port:56635
   [junit4]   2> 9085 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9089 T82 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@55a7556e name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9091 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9092 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9094 T84 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@2606a40a name:ZooKeeperConnection Watcher:127.0.0.1:56635 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9095 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9099 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9104 T86 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@175ccb24 name:ZooKeeperConnection Watcher:127.0.0.1:56635 got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9105 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9105 T16 oascc.SolrZkClient.makePath makePath: /solr
   [junit4]   2> 9108 T16 oascc.SolrZkClient.makePath makePath: /live_nodes
   [junit4]   2> 9113 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9121 T87 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9124 T91 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@4c4c188f name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9125 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9125 T90 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@531c59fb name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9126 T87 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9128 T16 oascc.SolrZkClient.makePath makePath: /clusterstate.json
   [junit4]   2> 9130 T87 oascc.SolrZkClient.makePath makePath: /overseer_elect
   [junit4]   2> 9131 T16 oascc.SolrZkClient.makePath makePath: /aliases.json
   [junit4]   2> 9133 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 9136 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node1
   [junit4]   2> 9136 T87 oascc.SolrZkClient.makePath makePath: /overseer_elect/election
   [junit4]   2> 9140 T16 oascc.SolrZkClient.makePath makePath: /overseer/queue
   [junit4]   2> 9141 T87 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:56635_solr
   [junit4]   2> 9142 T87 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 9146 T87 oasc.Overseer.start Overseer (id=91738715644624900-127.0.0.1:56635_solr-n_0000000000) starting
   [junit4]   2> 9149 T87 oascc.SolrZkClient.makePath makePath: /overseer/queue-work
   [junit4]   2> 9153 T87 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-failure
   [junit4]   2> 9156 T87 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-running
   [junit4]   2> 9159 T87 oascc.SolrZkClient.makePath makePath: /overseer/collection-map-completed
   [junit4]   2> 9162 T87 oascc.SolrZkClient.makePath makePath: /overseer/collection-queue-work
   [junit4]   2> 9167 T87 oasc.OverseerTest$OverseerRestarter.run Killing overseer.
   [junit4]   2> 9167 T93 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 9167 T92 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 9170 T87 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9172 T95 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@5ddbade8 name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9172 T87 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9173 T92 oasc.Overseer$ClusterStateUpdater.amILeader According to ZK I (id=91738715644624900-127.0.0.1:56635_solr-n_0000000000) am no longer a leader.
   [junit4]   2> 9173 T93 oasc.OverseerCollectionProcessor.amILeader According to ZK I (id=91738715644624900-127.0.0.1:56635_solr-n_0000000000) am no longer a leader.
   [junit4]   2> 9173 T92 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:56635_solr
   [junit4]   2> 9174 T93 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:56635_solr
   [junit4]   2> 9175 T96 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 9175 T93 oasc.OverseerCollectionProcessor.run ERROR Unable to prioritize overseer  org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /roles.json
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$4.execute(SolrZkClient.java:226)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$4.execute(SolrZkClient.java:223)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.exists(SolrZkClient.java:223)
   [junit4]   2> 	at org.apache.solr.cloud.OverseerCollectionProcessor.prioritizeOverseerNodes(OverseerCollectionProcessor.java:293)
   [junit4]   2> 	at org.apache.solr.cloud.OverseerCollectionProcessor.run(OverseerCollectionProcessor.java:206)
   [junit4]   2> 	at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> 
   [junit4]   2> 9181 T87 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:56635_solr
   [junit4]   2> 9182 T87 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 9184 T87 oasc.Overseer.start Overseer (id=91738715644624901-127.0.0.1:56635_solr-n_0000000001) starting
   [junit4]   2> 9192 T98 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 9193 T97 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 9193 T98 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:56635_solr
   [junit4]   2> 9196 T97 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 9199 T97 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state1",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 9200 T97 oasc.Overseer$ClusterStateUpdater.createCollection Create collection collection1 with shards [shard1]
   [junit4]   2> 9200 T97 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard1
   [junit4]   2> 9204 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9206 T91 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 9646 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 9661 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 9666 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9668 T97 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 9668 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 9668 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9673 T97 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state2",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 9673 T97 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 9676 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 9677 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9682 T100 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@232f284d name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 9683 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 9685 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 9687 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node2
   [junit4]   2> 9753 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9753 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 9754 T97 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state1",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 9754 T97 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 9767 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9775 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 9870 T91 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 9870 T100 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 9977 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 9980 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9981 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9981 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 9983 T97 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 9984 T97 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state2",
   [junit4]   2> 	  "node_name":"node2",
   [junit4]   2> 	  "core":"core4",
   [junit4]   2> 	  "core_node_name":"node2",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node2/solr/"}
   [junit4]   2> 9984 T97 oasc.Overseer$ClusterStateUpdater.updateState Collection already exists with numShards=1
   [junit4]   2> 9985 T97 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard1
   [junit4]   2> 9989 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10094 T100 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 10094 T91 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 10481 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 10491 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 10493 T100 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 10543 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10543 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10543 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10544 T97 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 10548 T95 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10650 T100 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 10694 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 10695 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 10696 T87 oasc.OverseerTest$OverseerRestarter.run Killing overseer.
   [junit4]   2> 10699 T102 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@301aeed6 name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 10702 T87 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 10704 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 10706 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 10710 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node1
   [junit4]   2> 10710 T104 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@59e4328b name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 10711 T87 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 10711 T97 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:56635_solr
   [junit4]   2> 10721 T105 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 10733 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 10732 T87 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:56635_solr
   [junit4]   2> 10735 T87 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 10737 T87 oasc.Overseer.start Overseer (id=91738715644624904-127.0.0.1:56635_solr-n_0000000002) starting
   [junit4]   2> 10757 T107 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 10772 T77 oazs.NIOServerCnxn.doIO WARN caught end of stream exception EndOfStreamException: Unable to read additional data from client sessionid 0x145ebe036260006, likely client has closed socket
   [junit4]   2> 	at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228)
   [junit4]   2> 	at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
   [junit4]   2> 	at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> 
   [junit4]   2> 10772 T107 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:56635_solr
   [junit4]   2> 10774 T106 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 10774 T102 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 10776 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10776 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 10777 T106 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 10778 T106 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state1",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 10778 T106 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 10783 T102 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 10786 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 10791 T109 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@41ee161a name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 10791 T106 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 10792 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 10793 T106 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state2",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 10793 T106 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 10801 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 10803 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10806 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node2
   [junit4]   2> 10806 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10811 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10811 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 10813 T106 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state1",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 10813 T106 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 10817 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 10826 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 10920 T109 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 10921 T102 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 11028 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11035 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11035 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 11035 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11036 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11036 T106 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11037 T106 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state2",
   [junit4]   2> 	  "node_name":"node2",
   [junit4]   2> 	  "core":"core4",
   [junit4]   2> 	  "core_node_name":"node2",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node2/solr/"}
   [junit4]   2> 11037 T106 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 11040 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11051 T102 oasc.LeaderElector$ElectionWatcher.process WARN  org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:260)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:94)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.access$200(LeaderElector.java:55)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector$ElectionWatcher.process(LeaderElector.java:303)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
   [junit4]   2> 
   [junit4]   2> 11052 T102 oasc.LeaderElector$ElectionWatcher.process WARN  org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:260)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:257)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:94)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.access$200(LeaderElector.java:55)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector$ElectionWatcher.process(LeaderElector.java:303)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
   [junit4]   2> 	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
   [junit4]   2> 
   [junit4]   2> 11053 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11084 T109 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 11096 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11100 T104 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11202 T109 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 11255 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11264 T87 oasc.OverseerTest$OverseerRestarter.run Killing overseer.
   [junit4]   2> 11288 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 11300 T111 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@6dcaf6c8 name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 11300 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 11310 T87 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 11311 T113 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@1ce6a7d3 name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 11312 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 11312 T87 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 11314 T106 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:56635_solr
   [junit4]   2> 11346 T114 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 11349 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node1
   [junit4]   2> 11352 T87 oasc.OverseerElectionContext.runLeaderProcess I am going to be the leader 127.0.0.1:56635_solr
   [junit4]   2> 11353 T87 oascc.SolrZkClient.makePath makePath: /overseer_elect/leader
   [junit4]   2> 11354 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 11361 T87 oasc.Overseer.start Overseer (id=91738715644624907-127.0.0.1:56635_solr-n_0000000003) starting
   [junit4]   2> 11377 T111 oascc.SolrZkClient.makePath makePath: /collections/collection1/leaders/shard1
   [junit4]   2> 11378 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 11428 T16 oascc.ConnectionManager.waitForConnected Waiting for client to connect to ZooKeeper
   [junit4]   2> 11437 T118 oasc.OverseerCollectionProcessor.run Process current queue of collection creations
   [junit4]   2> 11439 T117 oascc.ConnectionManager.process Watcher org.apache.solr.common.cloud.ConnectionManager@377dc67c name:ZooKeeperConnection Watcher:127.0.0.1:56635/solr got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
   [junit4]   2> 11439 T118 oasc.OverseerCollectionProcessor.prioritizeOverseerNodes prioritizing overseer nodes at 127.0.0.1:56635_solr
   [junit4]   2> 11439 T115 oasc.Overseer$ClusterStateUpdater.run Starting to work on the main queue
   [junit4]   2> 11439 T16 oascc.ConnectionManager.waitForConnected Client is connected to ZooKeeper
   [junit4]   2> 11442 T16 oascc.ZkStateReader.createClusterStateWatchersAndUpdate Updating cluster state from ZooKeeper... 
   [junit4]   2> 11451 T16 oascc.SolrZkClient.makePath makePath: /live_nodes/node2
   [junit4]   2> 11465 T115 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11467 T113 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11467 T16 oascc.SolrZkClient.makePath makePath: /collections/collection1/leader_elect/shard1/election
   [junit4]   2> 11467 T115 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state1",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 11468 T115 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 11475 T117 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 11475 T111 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 2)
   [junit4]   2> 11476 T16 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11486 T115 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 11488 T115 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=1 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"state2",
   [junit4]   2> 	  "node_name":"node1",
   [junit4]   2> 	  "core":"core1",
   [junit4]   2> 	  "core_node_name":"node1",
   [junit4]   2> 	  "collection":"collection1",
   [junit4]   2> 	  "numShards":"1",
   [junit4]   2> 	  "base_url":"http://node1/solr/"}
   [junit4]   2> 11488 T115 oasc.Overseer$ClusterStateUpdater.updateState shard=shard1 is already registered
   [junit4]   2> 11493 T113 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 11501 T113 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildr

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

WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 30220 T16 oascc.SolrZkClient.makePath makePath: /collections/collection2/leader_elect/shard2/election
   [junit4]   2> 30226 T16 oascc.SolrZkClient.makePath makePath: /collections/collection2/leaders/shard2
   [junit4]   2> 30229 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30229 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30229 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30230 T498 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 30231 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30233 T498 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=3 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"active",
   [junit4]   2> 	  "node_name":"127.0.0.1",
   [junit4]   2> 	  "core":"core2",
   [junit4]   2> 	  "core_node_name":"node2",
   [junit4]   2> 	  "collection":"collection2",
   [junit4]   2> 	  "numShards":"3",
   [junit4]   2> 	  "base_url":"http://127.0.0.1/solr/"}
   [junit4]   2> 30233 T498 oasc.Overseer$ClusterStateUpdater.updateState Collection already exists with numShards=3
   [junit4]   2> 30234 T498 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard3
   [junit4]   2> 30235 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30340 T495 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 30340 T501 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 30731 T16 oascc.SolrZkClient.makePath makePath: /collections/collection2/leader_elect/shard3/election
   [junit4]   2> 30738 T16 oascc.SolrZkClient.makePath makePath: /collections/collection2/leaders/shard3
   [junit4]   2> 30741 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30741 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30741 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30744 T498 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 30747 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30749 T498 oasc.Overseer$ClusterStateUpdater.updateState Update state numShards=3 message={
   [junit4]   2> 	  "operation":"state",
   [junit4]   2> 	  "state":"active",
   [junit4]   2> 	  "node_name":"127.0.0.1",
   [junit4]   2> 	  "core":"core3",
   [junit4]   2> 	  "core_node_name":"node3",
   [junit4]   2> 	  "collection":"collection2",
   [junit4]   2> 	  "numShards":"3",
   [junit4]   2> 	  "base_url":"http://127.0.0.1/solr/"}
   [junit4]   2> 30749 T498 oasc.Overseer$ClusterStateUpdater.updateState Collection already exists with numShards=3
   [junit4]   2> 30749 T498 oasc.Overseer$ClusterStateUpdater.updateState Assigning new node to shard shard=shard1
   [junit4]   2> 30751 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 30853 T495 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 30853 T501 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 31248 T16 oascc.SolrZkClient.makePath makePath: /collections/collection2/leader_elect/shard1/election
   [junit4]   2> 31252 T16 oascc.SolrZkClient.makePath makePath: /collections/collection2/leaders/shard1
   [junit4]   2> 31259 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 31259 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 31259 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 31260 T498 oascc.ZkStateReader.updateClusterState Updating cloud state from ZooKeeper... 
   [junit4]   2> 31265 T497 oasc.DistributedQueue$LatchChildWatcher.process LatchChildWatcher fired on path: /overseer/queue state: SyncConnected type NodeChildrenChanged
   [junit4]   2> 31368 T495 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 31368 T501 oascc.ZkStateReader$2.process A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 1)
   [junit4]   2> 31413 T16 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:35630 35630
   [junit4]   2> 31727 T485 oasc.ZkTestServer.send4LetterWord connecting to 127.0.0.1:35630 35630
   [junit4]   2> 31729 T16 oas.SolrTestCaseJ4.tearDown ###Ending testBadQueueItem
   [junit4]   2> 31730 T498 oasc.Overseer$ClusterStateUpdater.run Overseer Loop exiting : 127.0.0.1:35630_solr
   [junit4]   2> 31730 T502 oasc.Overseer$ClusterStateUpdater.checkIfIamStillLeader ERROR could not read the data org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2> 	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:277)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:274)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:306)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater.access$300(Overseer.java:85)
   [junit4]   2> 	at org.apache.solr.cloud.Overseer$ClusterStateUpdater$1.run(Overseer.java:289)
   [junit4]   2> 
   [junit4]   2> 31732 T16 oas.SolrTestCaseJ4.initCore ####initCore
   [junit4]   2> 31732 T16 oas.SolrTestCaseJ4.initCore ####initCore end
   [junit4]   2> 34732 T16 oas.SolrTestCaseJ4.deleteCore ###deleteCore
   [junit4]   2> NOTE: leaving temporary files on disk at: /mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/solr/build/solr-core/test/J0/./solr.cloud.OverseerTest-329CEF737853B966-001
   [junit4]   2> NOTE: test params are: codec=Asserting(Lucene46), sim=RandomSimilarityProvider(queryNorm=true,coord=crazy): {}, locale=de_CH, timezone=Africa/Kigali
   [junit4]   2> NOTE: Linux 3.8.0-39-generic amd64/Oracle Corporation 1.8.0_20-ea (64-bit)/cpus=8,threads=1,free=28608936,total=133169152
   [junit4]   2> NOTE: All tests run in this JVM: [ShardSplitTest, SliceStateTest, OverseerTest]
   [junit4] Completed on J0 in 33.29s, 9 tests, 1 error <<< FAILURES!

[...truncated 1193 lines...]
BUILD FAILED
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/build.xml:467: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/build.xml:447: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/build.xml:45: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/extra-targets.xml:37: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/solr/build.xml:189: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/solr/common-build.xml:496: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/lucene/common-build.xml:1296: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-trunk-Linux/lucene/common-build.xml:920: There were test failures: 400 suites, 1679 tests, 1 error, 37 ignored (16 assumptions)

Total time: 59 minutes 50 seconds
Build step 'Invoke Ant' marked build as failure
Description set: Java: 64bit/jdk1.8.0_20-ea-b11 -XX:-UseCompressedOops -XX:+UseG1GC
Archiving artifacts
Recording test results
Email was triggered for: Failure
Sending email for trigger: Failure



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