Build: https://jenkins.thetaphi.de/job/Lucene-Solr-7.x-Linux/18/
Java: 32bit/jdk1.8.0_131 -server -XX:+UseSerialGC

1 tests failed.
FAILED:  org.apache.solr.cloud.OverseerTest.testShardLeaderChange

Error Message:
Unexpected shard leader coll:collection1 shard:shard1 expected:<core1> but 
was:<null>

Stack Trace:
java.lang.AssertionError: Unexpected shard leader coll:collection1 shard:shard1 
expected:<core1> but was:<null>
        at 
__randomizedtesting.SeedInfo.seed([995C82D4739EF7D8:470F052369060229]:0)
        at org.junit.Assert.fail(Assert.java:93)
        at org.junit.Assert.failNotEquals(Assert.java:647)
        at org.junit.Assert.assertEquals(Assert.java:128)
        at 
org.apache.solr.cloud.OverseerTest.verifyShardLeader(OverseerTest.java:486)
        at 
org.apache.solr.cloud.OverseerTest.testShardLeaderChange(OverseerTest.java:720)
        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:498)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1713)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:907)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:943)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:957)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:916)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:802)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:852)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:863)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at java.lang.Thread.run(Thread.java:748)




Build Log:
[...truncated 11471 lines...]
   [junit4] Suite: org.apache.solr.cloud.OverseerTest
   [junit4]   2> Creating dataDir: 
/home/jenkins/workspace/Lucene-Solr-7.x-Linux/solr/build/solr-core/test/J2/temp/solr.cloud.OverseerTest_995C82D4739EF7D8-001/init-core-data-001
   [junit4]   2> 804329 WARN  
(SUITE-OverseerTest-seed#[995C82D4739EF7D8]-worker) [    ] o.a.s.SolrTestCaseJ4 
startTrackingSearchers: numOpens=2 numCloses=2
   [junit4]   2> 804330 INFO  
(SUITE-OverseerTest-seed#[995C82D4739EF7D8]-worker) [    ] o.a.s.SolrTestCaseJ4 
Using PointFields (NUMERIC_POINTS_SYSPROP=true) 
w/NUMERIC_DOCVALUES_SYSPROP=false
   [junit4]   2> 804330 INFO  
(SUITE-OverseerTest-seed#[995C82D4739EF7D8]-worker) [    ] o.a.s.SolrTestCaseJ4 
Randomized ssl (true) and clientAuth (false) via: 
@org.apache.solr.util.RandomizeSSL(reason=, ssl=NaN, value=NaN, clientAuth=NaN)
   [junit4]   2> 804331 INFO  
(SUITE-OverseerTest-seed#[995C82D4739EF7D8]-worker) [    ] o.a.s.SolrTestCaseJ4 
####initCore
   [junit4]   2> 804331 INFO  
(SUITE-OverseerTest-seed#[995C82D4739EF7D8]-worker) [    ] o.a.s.SolrTestCaseJ4 
####initCore end
   [junit4]   2> 804332 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testOverseerStatsReset
   [junit4]   2> 804332 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 804332 INFO  (Thread-1749) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 804332 INFO  (Thread-1749) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 804333 ERROR (Thread-1749) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 804432 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:40663
   [junit4]   2> 804434 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxn caught end of stream exception
   [junit4]   2> EndOfStreamException: Unable to read additional data from 
client sessionid 0x15d17632c020000, likely client has closed socket
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:239)
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:203)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 804466 INFO  (zkCallback-1929-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 804466 INFO  (zkCallback-1931-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 804469 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 804469 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:40663_solr
   [junit4]   2> 804469 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481579548674-127.0.0.1:40663_solr-n_0000000000) starting
   [junit4]   2> 804976 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481579548674-127.0.0.1:40663_solr-n_0000000000) closing
   [junit4]   2> 804976 INFO  
(OverseerStateUpdate-98260481579548674-127.0.0.1:40663_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:40663_solr
   [junit4]   2> 804977 WARN  (OverseerExitThread) [    ] o.a.s.c.Overseer I'm 
exiting, but I'm still the leader
   [junit4]   2> 804977 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:40663_solr
   [junit4]   2> 804978 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481579548674-127.0.0.1:40663_solr-n_0000000001) starting
   [junit4]   2> 804981 INFO  (zkCallback-1929-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 804981 WARN  (zkCallback-1931-thread-2) [    ] 
o.a.s.c.c.ZkStateReader ZooKeeper watch triggered, but Solr cannot talk to ZK: 
[KeeperErrorCode = Session expired for /live_nodes]
   [junit4]   2> 804983 ERROR 
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 804983 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:40663 40663
   [junit4]   2> 805018 INFO  (Thread-1749) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:40663 40663
   [junit4]   2> 805019 WARN  (Thread-1749) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/aliases.json
   [junit4]   2>        2       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/overseer/queue
   [junit4]   2>        2       /solr/live_nodes
   [junit4]   2>        2       /solr/collections
   [junit4]   2>        2       /solr/overseer/collection-queue-work
   [junit4]   2>        2       /solr/overseer/queue-work
   [junit4]   2> 
   [junit4]   2> 805019 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testOverseerStatsReset
   [junit4]   2> 805019 INFO  
(TEST-OverseerTest.testOverseerStatsReset-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481579548674-127.0.0.1:40663_solr-n_0000000001) closing
   [junit4]   2> 805019 INFO  
(OverseerStateUpdate-98260481579548674-127.0.0.1:40663_solr-n_0000000001) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:40663_solr
   [junit4]   2> 805020 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 805021 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testDoubleAssignment
   [junit4]   2> 805022 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 805022 INFO  (Thread-1750) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 805022 INFO  (Thread-1750) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 805023 ERROR (Thread-1750) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 805122 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:40407
   [junit4]   2> 805167 INFO  (zkCallback-1939-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 805170 INFO  (zkCallback-1935-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 805172 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 805172 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:40407_solr
   [junit4]   2> 805172 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481624702980-127.0.0.1:40407_solr-n_0000000000) starting
   [junit4]   2> 805176 INFO  
(OverseerStateUpdate-98260481624702980-127.0.0.1:40407_solr-n_0000000000) [    
] o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 805679 INFO  (zkCallback-1935-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 805679 INFO  (zkCallback-1939-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 805679 INFO  (zkCallback-1941-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 805681 INFO  (zkCallback-1941-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 805681 INFO  (zkCallback-1945-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 805681 INFO  (zkCallback-1935-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 805884 INFO  (zkCallback-1945-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 805884 INFO  (zkCallback-1935-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 805884 ERROR 
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 805884 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:40407 40407
   [junit4]   2> 805911 INFO  (Thread-1750) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:40407 40407
   [junit4]   2> 805911 WARN  (Thread-1750) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        4       /solr/aliases.json
   [junit4]   2>        4       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        4       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        4       /solr/live_nodes
   [junit4]   2>        4       /solr/collections
   [junit4]   2> 
   [junit4]   2> 805911 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testDoubleAssignment
   [junit4]   2> 805911 INFO  
(TEST-OverseerTest.testDoubleAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481624702980-127.0.0.1:40407_solr-n_0000000000) closing
   [junit4]   2> 805911 INFO  
(OverseerStateUpdate-98260481624702980-127.0.0.1:40407_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:40407_solr
   [junit4]   2> 805912 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 805914 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testRemovalOfLastReplica
   [junit4]   2> 805914 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 805914 INFO  (Thread-1751) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 805914 INFO  (Thread-1751) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 805917 ERROR (Thread-1751) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 806014 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:37663
   [junit4]   2> 806049 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 806050 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:37663_solr
   [junit4]   2> 806050 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481683226627-127.0.0.1:37663_solr-n_0000000000) starting
   [junit4]   2> 807613 ERROR 
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 807613 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:37663 37663
   [junit4]   2> 807637 INFO  (Thread-1751) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:37663 37663
   [junit4]   2> 807638 WARN  (Thread-1751) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/aliases.json
   [junit4]   2>        2       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/live_nodes
   [junit4]   2>        2       /solr/collections
   [junit4]   2> 
   [junit4]   2> 807638 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testRemovalOfLastReplica
   [junit4]   2> 807638 INFO  
(TEST-OverseerTest.testRemovalOfLastReplica-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481683226627-127.0.0.1:37663_solr-n_0000000000) closing
   [junit4]   2> 807638 INFO  
(OverseerStateUpdate-98260481683226627-127.0.0.1:37663_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:37663_solr
   [junit4]   2> 807638 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 807640 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testOverseerFailure
   [junit4]   2> 807641 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 807641 INFO  (Thread-1752) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 807641 INFO  (Thread-1752) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 807642 ERROR (Thread-1752) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 807741 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:45573
   [junit4]   2> 807767 INFO  (zkCallback-1959-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 807767 INFO  (zkCallback-1957-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 807769 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 807769 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45573_solr
   [junit4]   2> 807769 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481796341764-127.0.0.1:45573_solr-n_0000000000) starting
   [junit4]   2> 807772 INFO  
(OverseerStateUpdate-98260481796341764-127.0.0.1:45573_solr-n_0000000000) [    
] o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 809772 INFO  
(OverseerCollectionConfigSetProcessor-98260481796341764-127.0.0.1:45573_solr-n_0000000000)
 [    ] o.a.s.c.OverseerTaskProcessor According to ZK I 
(id=98260481796341764-127.0.0.1:45573_solr-n_0000000000) am no longer a leader.
   [junit4]   2> 810434 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481796341764-127.0.0.1:45573_solr-n_0000000000) closing
   [junit4]   2> 810434 INFO  
(OverseerStateUpdate-98260481796341764-127.0.0.1:45573_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45573_solr
   [junit4]   2> 810435 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 810435 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 810436 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45573_solr
   [junit4]   2> 810436 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481796341765-127.0.0.1:45573_solr-n_0000000001) starting
   [junit4]   2> 810439 INFO  
(OverseerStateUpdate-98260481796341765-127.0.0.1:45573_solr-n_0000000001) [    
] o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 811093 INFO  (zkCallback-1965-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 811093 INFO  (zkCallback-1957-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 811094 INFO  (zkCallback-1959-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 811094 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxn caught end of stream exception
   [junit4]   2> EndOfStreamException: Unable to read additional data from 
client sessionid 0x15d176338ee0005, likely client has closed socket
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:239)
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:203)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 811095 ERROR 
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 811095 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:45573 45573
   [junit4]   2> 811095 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxn caught end of stream exception
   [junit4]   2> EndOfStreamException: Unable to read additional data from 
client sessionid 0x15d176338ee0002, likely client has closed socket
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:239)
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:203)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 811129 INFO  (Thread-1752) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:45573 45573
   [junit4]   2> 811130 WARN  (Thread-1752) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        4       /solr/aliases.json
   [junit4]   2>        4       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        4       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        4       /solr/live_nodes
   [junit4]   2>        4       /solr/collections
   [junit4]   2>        2       /solr/overseer/queue
   [junit4]   2>        2       /solr/overseer/collection-queue-work
   [junit4]   2>        2       /solr/overseer/queue-work
   [junit4]   2> 
   [junit4]   2> 811130 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testOverseerFailure
   [junit4]   2> 811130 INFO  
(TEST-OverseerTest.testOverseerFailure-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260481796341765-127.0.0.1:45573_solr-n_0000000001) closing
   [junit4]   2> 811130 INFO  
(OverseerStateUpdate-98260481796341765-127.0.0.1:45573_solr-n_0000000001) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45573_solr
   [junit4]   2> 811131 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 811138 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testReplay
   [junit4]   2> 811138 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 811138 INFO  (Thread-1753) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 811138 INFO  (Thread-1753) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 811163 ERROR (Thread-1753) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 811238 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:45155
   [junit4]   2> 811361 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] o.a.s.c.Overseer 
Overseer (id=null) closing
   [junit4]   2> 811361 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:45155_solr
   [junit4]   2> 811361 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] o.a.s.c.Overseer 
Overseer (id=98260482025652227-127.0.0.1:45155_solr-n_0000000000) starting
   [junit4]   2> 811568 ERROR 
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 811568 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:45155 45155
   [junit4]   2> 811595 INFO  (Thread-1753) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:45155 45155
   [junit4]   2> 811599 WARN  (Thread-1753) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/aliases.json
   [junit4]   2>        2       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/live_nodes
   [junit4]   2>        2       /solr/collections
   [junit4]   2> 
   [junit4]   2> 811599 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testReplay
   [junit4]   2> 811599 INFO  
(TEST-OverseerTest.testReplay-seed#[995C82D4739EF7D8]) [    ] o.a.s.c.Overseer 
Overseer (id=98260482025652227-127.0.0.1:45155_solr-n_0000000000) closing
   [junit4]   2> 811599 INFO  
(OverseerStateUpdate-98260482025652227-127.0.0.1:45155_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:45155_solr
   [junit4]   2> 811608 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 811609 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testShardLeaderChange
   [junit4]   2> 811610 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 811618 INFO  (Thread-1754) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 811620 INFO  (Thread-1754) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 811621 ERROR (Thread-1754) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 811718 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:46249
   [junit4]   2> 811747 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxn caught end of stream exception
   [junit4]   2> EndOfStreamException: Unable to read additional data from 
client sessionid 0x15d1763487a0001, likely client has closed socket
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:239)
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:203)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 811811 INFO  (zkCallback-1981-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 811816 INFO  (zkCallback-1977-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 811824 INFO  (Thread-1755) [    ] o.a.s.c.Overseer Overseer 
(id=null) closing
   [junit4]   2> 811825 INFO  (Thread-1755) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:46249_solr
   [junit4]   2> 811825 INFO  (Thread-1755) [    ] o.a.s.c.Overseer Overseer 
(id=98260482057175044-127.0.0.1:46249_solr-n_0000000000) starting
   [junit4]   2> 811845 INFO  
(OverseerStateUpdate-98260482057175044-127.0.0.1:46249_solr-n_0000000000) [    
] o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 811873 INFO  (Thread-1755) [    ] o.a.s.c.OverseerTest Killing 
overseer.
   [junit4]   2> 811874 ERROR 
(OverseerCollectionConfigSetProcessor-98260482057175044-127.0.0.1:46249_solr-n_0000000000)
 [    ] o.a.s.c.OverseerTaskProcessor 
:org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode 
= Session expired for /overseer/collection-queue-work
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1532)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:340)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:337)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:337)
   [junit4]   2>        at 
org.apache.solr.cloud.DistributedQueue.fetchZkChildren(DistributedQueue.java:305)
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerTaskQueue.getTailId(OverseerTaskQueue.java:264)
   [junit4]   2>        at 
org.apache.solr.cloud.OverseerTaskProcessor.run(OverseerTaskProcessor.java:163)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 
   [junit4]   2> 811893 INFO  
(OverseerCollectionConfigSetProcessor-98260482057175044-127.0.0.1:46249_solr-n_0000000000)
 [    ] o.a.s.c.OverseerTaskProcessor According to ZK I 
(id=98260482057175044-127.0.0.1:46249_solr-n_0000000000) am no longer a leader.
   [junit4]   2> 811895 INFO  (Thread-1755) [    ] o.a.s.c.Overseer Overseer 
(id=98260482057175044-127.0.0.1:46249_solr-n_0000000000) closing
   [junit4]   2> 811896 INFO  
(OverseerStateUpdate-98260482057175044-127.0.0.1:46249_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:46249_solr
   [junit4]   2> 811910 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 811914 INFO  (Thread-1755) [    ] o.a.s.c.Overseer Overseer 
(id=null) closing
   [junit4]   2> 811914 INFO  (Thread-1755) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:46249_solr
   [junit4]   2> 811915 INFO  (Thread-1755) [    ] o.a.s.c.Overseer Overseer 
(id=98260482057175045-127.0.0.1:46249_solr-n_0000000001) starting
   [junit4]   2> 811937 INFO  
(OverseerStateUpdate-98260482057175045-127.0.0.1:46249_solr-n_0000000001) [    
] o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 811938 ERROR 
(OverseerStateUpdate-98260482057175045-127.0.0.1:46249_solr-n_0000000001) [    
] o.a.s.c.o.ReplicaMutator No such slice exists {
   [junit4]   2>   "operation":"state",
   [junit4]   2>   "state":"active",
   [junit4]   2>   "node_name":"node1",
   [junit4]   2>   "core":"core1",
   [junit4]   2>   "core_node_name":"node1",
   [junit4]   2>   "collection":"collection1",
   [junit4]   2>   "shard":"shard1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "base_url":"http://node1/solr/"}
   [junit4]   2> 871821 ERROR 
(OverseerStateUpdate-98260482057175045-127.0.0.1:46249_solr-n_0000000001) [    
] o.a.s.c.o.ReplicaMutator No such slice exists {
   [junit4]   2>   "operation":"state",
   [junit4]   2>   "state":"recovering",
   [junit4]   2>   "node_name":"node1",
   [junit4]   2>   "core":"core1",
   [junit4]   2>   "core_node_name":"node1",
   [junit4]   2>   "collection":"collection1",
   [junit4]   2>   "shard":"shard1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "base_url":"http://node1/solr/"}
   [junit4]   2> 931832 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 931833 INFO  (zkCallback-1987-thread-2) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 931833 INFO  (zkCallback-1981-thread-2) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 931833 INFO  (zkCallback-1991-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 931833 INFO  (zkCallback-1977-thread-2) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (2)
   [junit4]   2> 931833 ERROR 
(OverseerStateUpdate-98260482057175045-127.0.0.1:46249_solr-n_0000000001) [    
] o.a.s.c.o.ReplicaMutator No such slice exists {
   [junit4]   2>   "operation":"state",
   [junit4]   2>   "state":"active",
   [junit4]   2>   "node_name":"node1",
   [junit4]   2>   "core":"core1",
   [junit4]   2>   "core_node_name":"node1",
   [junit4]   2>   "collection":"collection1",
   [junit4]   2>   "shard":"shard1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "base_url":"http://node1/solr/"}
   [junit4]   2> 1031927 INFO  (zkCallback-1991-thread-2) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 1031927 INFO  (zkCallback-1977-thread-3) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (2) -> (1)
   [junit4]   2> 1031986 INFO  
(OverseerCollectionConfigSetProcessor-98260482057175045-127.0.0.1:46249_solr-n_0000000001)
 [    ] o.a.s.c.OverseerTaskProcessor According to ZK I 
(id=98260482057175045-127.0.0.1:46249_solr-n_0000000001) am no longer a leader.
   [junit4]   2> 1033427 WARN  (zkCallback-1981-thread-3) [    ] 
o.a.s.c.c.ZkStateReader ZooKeeper watch triggered, but Solr cannot talk to ZK: 
[KeeperErrorCode = Session expired for /live_nodes]
   [junit4]   2> 1033427 INFO  (zkCallback-1991-thread-2) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 1033427 INFO  (zkCallback-1977-thread-3) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 1033427 WARN  (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [    ] 
o.a.z.s.NIOServerCnxn caught end of stream exception
   [junit4]   2> EndOfStreamException: Unable to read additional data from 
client sessionid 0x15d1763487a0006, likely client has closed socket
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:239)
   [junit4]   2>        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:203)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1033428 ERROR 
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1033428 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:46249 46249
   [junit4]   2> 1034211 INFO  (Thread-1754) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:46249 46249
   [junit4]   2> 1034211 WARN  (Thread-1754) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        5       /solr/aliases.json
   [junit4]   2>        5       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        5       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        5       /solr/live_nodes
   [junit4]   2>        5       /solr/collections
   [junit4]   2>        2       /solr/overseer/queue-work
   [junit4]   2> 
   [junit4]   2> 1034212 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testShardLeaderChange
   [junit4]   2> 1034212 INFO  
(TEST-OverseerTest.testShardLeaderChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260482057175045-127.0.0.1:46249_solr-n_0000000001) closing
   [junit4]   2> 1034212 INFO  
(OverseerStateUpdate-98260482057175045-127.0.0.1:46249_solr-n_0000000001) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:46249_solr
   [junit4]   2> 1034212 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=OverseerTest 
-Dtests.method=testShardLeaderChange -Dtests.seed=995C82D4739EF7D8 
-Dtests.multiplier=3 -Dtests.slow=true -Dtests.locale=ru 
-Dtests.timezone=Asia/Calcutta -Dtests.asserts=true -Dtests.file.encoding=UTF-8
   [junit4] FAILURE  223s J2 | OverseerTest.testShardLeaderChange <<<
   [junit4]    > Throwable #1: java.lang.AssertionError: Unexpected shard 
leader coll:collection1 shard:shard1 expected:<core1> but was:<null>
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([995C82D4739EF7D8:470F052369060229]:0)
   [junit4]    >        at 
org.apache.solr.cloud.OverseerTest.verifyShardLeader(OverseerTest.java:486)
   [junit4]    >        at 
org.apache.solr.cloud.OverseerTest.testShardLeaderChange(OverseerTest.java:720)
   [junit4]    >        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1034214 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testStateChange
   [junit4]   2> 1034215 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 1034215 INFO  (Thread-1756) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 1034215 INFO  (Thread-1756) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 1034216 ERROR (Thread-1756) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1034315 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:39057
   [junit4]   2> 1034356 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 1034356 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:39057_solr
   [junit4]   2> 1034356 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260496645095427-127.0.0.1:39057_solr-n_0000000000) starting
   [junit4]   2> 1034662 ERROR 
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1034662 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:39057 39057
   [junit4]   2> 1035066 INFO  (Thread-1756) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:39057 39057
   [junit4]   2> 1035067 WARN  (Thread-1756) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/aliases.json
   [junit4]   2>        2       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/live_nodes
   [junit4]   2>        2       /solr/collections
   [junit4]   2> 
   [junit4]   2> 1035067 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testStateChange
   [junit4]   2> 1035067 INFO  
(TEST-OverseerTest.testStateChange-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260496645095427-127.0.0.1:39057_solr-n_0000000000) closing
   [junit4]   2> 1035067 INFO  
(OverseerStateUpdate-98260496645095427-127.0.0.1:39057_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:39057_solr
   [junit4]   2> 1035067 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1035069 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testShardAssignment
   [junit4]   2> 1035070 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 1035070 INFO  (Thread-1757) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 1035070 INFO  (Thread-1757) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 1035071 ERROR (Thread-1757) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1035170 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:35979
   [junit4]   2> 1035212 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 1035213 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:35979_solr
   [junit4]   2> 1035213 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260496701194243-127.0.0.1:35979_solr-n_0000000000) starting
   [junit4]   2> 1035232 INFO  (zkCallback-2004-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 1035232 INFO  (zkCallback-2003-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 1035232 INFO  (zkCallback-2009-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 1038248 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ShardLeaderElectionContextBase No version found for ephemeral leader 
parent node, won't remove previous leader registration.
   [junit4]   2> 1038248 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ShardLeaderElectionContextBase No version found for ephemeral leader 
parent node, won't remove previous leader registration.
   [junit4]   2> 1038248 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ShardLeaderElectionContextBase No version found for ephemeral leader 
parent node, won't remove previous leader registration.
   [junit4]   2> 1038248 WARN  (zkCallback-2009-thread-1) [    ] 
o.a.s.c.LeaderElector Our node is no longer in line to be leader
   [junit4]   2> 1038248 WARN  (zkCallback-2009-thread-1) [    ] 
o.a.s.c.LeaderElector Our node is no longer in line to be leader
   [junit4]   2> 1038249 WARN  (zkCallback-2009-thread-1) [    ] 
o.a.s.c.LeaderElector Our node is no longer in line to be leader
   [junit4]   2> 1038249 INFO  (zkCallback-2009-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 1038249 INFO  (zkCallback-2004-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 1038249 ERROR 
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1038250 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:35979 35979
   [junit4]   2> 1038256 INFO  (Thread-1757) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:35979 35979
   [junit4]   2> 1038256 WARN  (Thread-1757) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        3       /solr/aliases.json
   [junit4]   2>        3       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        3       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        3       /solr/live_nodes
   [junit4]   2>        3       /solr/collections
   [junit4]   2> 
   [junit4]   2> 1038257 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testShardAssignment
   [junit4]   2> 1038257 INFO  
(TEST-OverseerTest.testShardAssignment-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260496701194243-127.0.0.1:35979_solr-n_0000000000) closing
   [junit4]   2> 1038257 INFO  
(OverseerStateUpdate-98260496701194243-127.0.0.1:35979_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:35979_solr
   [junit4]   2> 1038257 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1038259 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.SolrTestCaseJ4 ###Starting testExternalClusterStateChangeBehavior
   [junit4]   2> 1038259 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 1038259 INFO  (Thread-1758) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 1038259 INFO  (Thread-1758) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 1038260 ERROR (Thread-1758) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1038359 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.ZkTestServer start zk server on port:37391
   [junit4]   2> 1038398 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 1038398 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.OverseerElectionContext I am going to be the leader 
127.0.0.1:37391_solr
   [junit4]   2> 1038398 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.Overseer Overseer 
(id=98260496910188547-127.0.0.1:37391_solr-n_0000000000) starting
   [junit4]   2> 1038555 WARN  
(OverseerStateUpdate-98260496910188547-127.0.0.1:37391_solr-n_0000000000) [    
] o.a.s.c.Overseer Bad version writing to ZK using compare-and-set, will force 
refresh cluster state: KeeperErrorCode = BadVersion for /clusterstate.json
   [junit4]   2> 1038558 INFO  
(OverseerStateUpdate-98260496910188547-127.0.0.1:37391_solr-n_0000000000) [    
] o.a.s.c.o.SliceMutator createReplica() {
   [junit4]   2>   "operation":"addreplica",
   [junit4]   2>   "collection":"test",
   [junit4]   2>   "shard":"x",
   [junit4]   2>   "base_url":"http://127.0.0.1/solr";,
   [junit4]   2>   "node_name":"node1",
   [junit4]   2>   "core":"core1",
   [junit4]   2>   "state":"down"} 
   [junit4]   2> 1038707 ERROR 
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so 
ZooKeeper server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1038707 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.ZkTestServer connecting to 127.0.0.1:37391 37391
   [junit4]   2> 1038739 INFO  (Thread-1758) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:37391 37391
   [junit4]   2> 1038739 WARN  (Thread-1758) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/aliases.json
   [junit4]   2>        2       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        2       /solr/live_nodes
   [junit4]   2>        2       /solr/collections
   [junit4]   2> 
   [junit4]   2> 1038739 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.SolrTestCaseJ4 ###Ending testExternalClusterStateChangeBehavior
   [junit4]   2> 1038740 INFO  
(TEST-OverseerTest.testExternalClusterStateChangeBehavior-seed#[995C82D4739EF7D8])
 [    ] o.a.s.c.Overseer Overseer 
(id=98260496910188547-127.0.0.1:37391_solr-n_0000000000) closing
   [junit4]   2> 1038740 INFO  
(OverseerStateUpdate-98260496910188547-127.0.0.1:37391_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:37391_solr
   [junit4]   2> 1038740 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> 1038742 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Starting testBadQueueItem
   [junit4]   2> 1038743 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 1038743 INFO  (Thread-1759) [    ] o.a.s.c.ZkTestServer client 
port:0.0.0.0/0.0.0.0:0
   [junit4]   2> 1038743 INFO  (Thread-1759) [    ] o.a.s.c.ZkTestServer 
Starting server
   [junit4]   2> 1038748 ERROR (Thread-1759) [    ] o.a.z.s.ZooKeeperServer 
ZKShutdownHandler is not registered, so ZooKeeper server won't take any action 
on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1038843 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer start zk server on port:43231
   [junit4]   2> 1038891 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer (id=null) closing
   [junit4]   2> 1038892 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.OverseerElectionContext I am going to be the leader 127.0.0.1:43231_solr
   [junit4]   2> 1038892 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260496941842435-127.0.0.1:43231_solr-n_0000000000) starting
   [junit4]   2> 1038907 INFO  (zkCallback-2027-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 1038908 INFO  (zkCallback-2021-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 1038912 INFO  (zkCallback-2022-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (0) -> (1)
   [junit4]   2> 1040570 ERROR 
(OverseerStateUpdate-98260496941842435-127.0.0.1:43231_solr-n_0000000000) [    
] o.a.s.c.o.CollectionMutator Skipping invalid Overseer message because it has 
no collection specified: {
   [junit4]   2>   "operation":"state",
   [junit4]   2>   "state":"active",
   [junit4]   2>   "node_name":"127.0.0.1",
   [junit4]   2>   "core":"core0",
   [junit4]   2>   "core_node_name":"node0",
   [junit4]   2>   "collection":"",
   [junit4]   2>   "shard":"shard1",
   [junit4]   2>   "numShards":"1",
   [junit4]   2>   "base_url":"http://127.0.0.1/solr/"}
   [junit4]   2> 1040571 ERROR 
(OverseerStateUpdate-98260496941842435-127.0.0.1:43231_solr-n_0000000000) [    
] o.a.s.c.o.CollectionMutator Skipping invalid Overseer message because it has 
no collection specified: {
   [junit4]   2>   "operation":"deletecore",
   [junit4]   2>   "node_name":"127.0.0.1",
   [junit4]   2>   "core":"core0",
   [junit4]   2>   "core_node_name":"node0",
   [junit4]   2>   "collection":""}
   [junit4]   2> 1042233 INFO  (zkCallback-2027-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 1042233 INFO  (zkCallback-2022-thread-1) [    ] 
o.a.s.c.c.ZkStateReader Updated live nodes from ZooKeeper... (1) -> (0)
   [junit4]   2> 1042233 ERROR 
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.z.s.ZooKeeperServer ZKShutdownHandler is not registered, so ZooKeeper 
server won't take any action on ERROR or SHUTDOWN server state changes
   [junit4]   2> 1042233 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.ZkTestServer connecting to 127.0.0.1:43231 43231
   [junit4]   2> 1042632 INFO  (Thread-1759) [    ] o.a.s.c.ZkTestServer 
connecting to 127.0.0.1:43231 43231
   [junit4]   2> 1042633 WARN  (Thread-1759) [    ] o.a.s.c.ZkTestServer Watch 
limit violations: 
   [junit4]   2> Maximum concurrent create/delete watches above limit:
   [junit4]   2> 
   [junit4]   2>        3       /solr/aliases.json
   [junit4]   2>        3       /solr/clusterprops.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent data watches above limit:
   [junit4]   2> 
   [junit4]   2>        3       /solr/clusterstate.json
   [junit4]   2> 
   [junit4]   2> Maximum concurrent children watches above limit:
   [junit4]   2> 
   [junit4]   2>        3       /solr/live_nodes
   [junit4]   2>        3       /solr/collections
   [junit4]   2> 
   [junit4]   2> 1042633 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.SolrTestCaseJ4 ###Ending testBadQueueItem
   [junit4]   2> 1042633 INFO  
(TEST-OverseerTest.testBadQueueItem-seed#[995C82D4739EF7D8]) [    ] 
o.a.s.c.Overseer Overseer 
(id=98260496941842435-127.0.0.1:43231_solr-n_0000000000) closing
   [junit4]   2> 1042633 INFO  
(OverseerStateUpdate-98260496941842435-127.0.0.1:43231_solr-n_0000000000) [    
] o.a.s.c.Overseer Overseer Loop exiting : 127.0.0.1:43231_solr
   [junit4]   2> 1042633 ERROR (OverseerExitThread) [    ] o.a.s.c.Overseer 
could not read the data
   [junit4]   2> org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /overseer_elect/leader
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
   [junit4]   2>        at 
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
   [junit4]   2>        at 
org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:357)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:60)
   [junit4]   2>        at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:354)
   [junit4]   2>        at 
org.apache.solr.cloud.Overseer$ClusterStateUpdater.checkIfIamStillLeader(Overseer.java:298)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:748)
   [junit4]   2> NOTE: leaving temporary files on disk at: 
/home/jenkins/workspace/Lucene-Solr-7.x-Linux/solr/build/solr-core/test/J2/temp/solr.cloud.OverseerTest_995C82D4739EF7D8-001
   [junit4]   2> NOTE: test params are: codec=Asserting(Lucene70): {}, 
docValues:{}, maxPointsInLeafNode=892, maxMBSortInHeap=5.965872045375053, 
sim=RandomSimilarity(queryNorm=false): {}, locale=ru, timezone=Asia/Calcutta
   [junit4]   2> NOTE: Linux 4.10.0-21-generic i386/Oracle Corporation 
1.8.0_131 (32-bit)/cpus=8,threads=1,free=96275160,total=293539840
   [junit4]   2> NOTE: All tests run in this JVM: [HardAutoCommitTest, 
SimplePostToolTest, TestSolrCoreSnapshots, ReplicationFactorTest, 
TestSolrCoreProperties, TestSha256AuthenticationProvider, TestExpandComponent, 
TestCloudRecovery, ConfigureRecoveryStrategyTest, TimeZoneUtilsTest, 
TestTolerantUpdateProcessorRandomCloud, TestExceedMaxTermLength, 
PrimitiveFieldTypeTest, SolrInfoBeanTest, FullSolrCloudDistribCmdsTest, 
UniqFieldsUpdateProcessorFactoryTest, TestReplicaProperties, 
SolrCloudReportersTest, UnloadDistributedZkTest, CleanupOldIndexTest, 
LeaderInitiatedRecoveryOnShardRestartTest, FastVectorHighlighterTest, 
TestOrdValues, MinimalSchemaTest, TestSubQueryTransformerCrossCore, 
ParsingFieldUpdateProcessorsTest, BufferStoreTest, TestLegacyFieldReuse, 
CollectionsAPISolrJTest, TestSchemalessBufferedUpdates, ConnectionManagerTest, 
MetricsConfigTest, TestPayloadScoreQParserPlugin, 
TermVectorComponentDistributedTest, TestLMJelinekMercerSimilarityFactory, 
TestFastWriter, MultiTermTest, HdfsBasicDistributedZk2Test, V2StandaloneTest, 
DocumentBuilderTest, TestMultiValuedNumericRangeQuery, 
AnalyticsMergeStrategyTest, TestNumericTokenStream, TestFieldCacheSort, 
TestSolrCloudWithSecureImpersonation, TestBlendedInfixSuggestions, 
ResponseLogComponentTest, CopyFieldTest, TestAuthenticationFramework, 
BlockJoinFacetDistribTest, TestFieldSortValues, TestJmxIntegration, 
SolrTestCaseJ4Test, BasicAuthIntegrationTest, URLClassifyProcessorTest, 
DateFieldTest, TestExactSharedStatsCache, TestFieldTypeCollectionResource, 
ExplicitHLLTest, ConjunctionSolrSpellCheckerTest, 
TestLeaderElectionWithEmptyReplica, TestReloadAndDeleteDocs, ClusterStateTest, 
TestSQLHandler, HdfsRecoverLeaseTest, QueryEqualityTest, 
UUIDUpdateProcessorFallbackTest, ClassificationUpdateProcessorFactoryTest, 
DistributedSuggestComponentTest, TestHalfAndHalfDocValues, 
ShowFileRequestHandlerTest, ExitableDirectoryReaderTest, TestInfoStreamLogging, 
TestLocalFSCloudBackupRestore, ChaosMonkeyNothingIsSafeWithPullReplicasTest, 
TestSort, NumericFieldsTest, DirectUpdateHandlerTest, SuggesterFSTTest, 
NodeMutatorTest, DateMathParserTest, DistribCursorPagingTest, CircularListTest, 
CloneFieldUpdateProcessorFactoryTest, OverseerCollectionConfigSetProcessorTest, 
DateRangeFieldTest, TestDFRSimilarityFactory, XsltUpdateRequestHandlerTest, 
TestConfigSetsAPI, CoreMergeIndexesAdminHandlerTest, 
TestSerializedLuceneMatchVersion, TestPrepRecovery, TestNoOpRegenerator, 
DistributedFacetPivotWhiteBoxTest, LeaderFailoverAfterPartitionTest, 
TestSolrFieldCacheBean, OverseerTest]
   [junit4] Completed [205/726 (1!)] on J2 in 241.31s, 11 tests, 1 failure, 1 
skipped <<< FAILURES!

[...truncated 41167 lines...]
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