[JENKINS] Lucene-Solr-6.x-MacOSX (64bit/jdk1.8.0) - Build # 826 - Still Unstable!

[Policeman Jenkins Server]

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-6.x-MacOSX/826/
Java: 64bit/jdk1.8.0 -XX:-UseCompressedOops -XX:+UseParallelGC

95 tests failed.
FAILED:  junit.framework.TestSuite.org.apache.solr.MinimalSchemaTest

Error Message:
org.apache.solr.MinimalSchemaTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.MinimalSchemaTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/MinimalSchemaTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.api.TestPathTrie

Error Message:
org.apache.solr.api.TestPathTrie

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.api.TestPathTrie
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/api/TestPathTrie.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  
junit.framework.TestSuite.org.apache.solr.client.solrj.impl.ConnectionReuseTest

Error Message:
org.apache.solr.client.solrj.impl.ConnectionReuseTest

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.client.solrj.impl.ConnectionReuseTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/client/solrj/impl/ConnectionReuseTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  org.apache.solr.cloud.BasicDistributedZk2Test.test

Error Message:
java.io.IOException: Couldn't instantiate 
org.apache.zookeeper.ClientCnxnSocketNIO

Stack Trace:
org.apache.solr.common.SolrException: java.io.IOException: Couldn't instantiate 
org.apache.zookeeper.ClientCnxnSocketNIO
        at 
__randomizedtesting.SeedInfo.seed([70A6315911B648B8:F8F20E83BF4A2540]:0)
        at 
org.apache.solr.common.cloud.SolrZkClient.<init>(SolrZkClient.java:170)
        at 
org.apache.solr.common.cloud.SolrZkClient.<init>(SolrZkClient.java:116)
        at 
org.apache.solr.common.cloud.SolrZkClient.<init>(SolrZkClient.java:106)
        at 
org.apache.solr.common.cloud.ZkStateReader.<init>(ZkStateReader.java:226)
        at 
org.apache.solr.client.solrj.impl.ZkClientClusterStateProvider.connect(ZkClientClusterStateProvider.java:131)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.connect(CloudSolrClient.java:631)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.initCloud(AbstractFullDistribZkTestBase.java:267)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.createServers(AbstractFullDistribZkTestBase.java:329)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:990)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:967)
        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:745)
Caused by: java.io.IOException: Couldn't instantiate 
org.apache.zookeeper.ClientCnxnSocketNIO
        at 
org.apache.zookeeper.ZooKeeper.getClientCnxnSocket(ZooKeeper.java:1782)
        at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:447)
        at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:380)
        at 
org.apache.solr.common.cloud.SolrZooKeeper.<init>(SolrZooKeeper.java:43)
        at 
org.apache.solr.common.cloud.ZkClientConnectionStrategy.createSolrZooKeeper(ZkClientConnectionStrategy.java:105)
        at 
org.apache.solr.common.cloud.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:37)
        at 
org.apache.solr.common.cloud.SolrZkClient.<init>(SolrZkClient.java:145)
        ... 40 more
Caused by: java.io.IOException: Too many open files
        at sun.nio.ch.IOUtil.makePipe(Native Method)
        at sun.nio.ch.KQueueSelectorImpl.<init>(KQueueSelectorImpl.java:84)
        at 
sun.nio.ch.KQueueSelectorProvider.openSelector(KQueueSelectorProvider.java:42)
        at java.nio.channels.Selector.open(Selector.java:227)
        at 
org.apache.zookeeper.ClientCnxnSocketNIO.<init>(ClientCnxnSocketNIO.java:43)
        at sun.reflect.GeneratedConstructorAccessor24.newInstance(Unknown 
Source)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at java.lang.Class.newInstance(Class.java:442)
        at 
org.apache.zookeeper.ZooKeeper.getClientCnxnSocket(ZooKeeper.java:1779)
        ... 46 more


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

Error Message:
org.apache.solr.cloud.BasicDistributedZkTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.BasicDistributedZkTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/BasicDistributedZkTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.CollectionsAPISolrJTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.CollectionsAPISolrJTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/CollectionsAPISolrJTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  org.apache.solr.cloud.CustomCollectionTest.testCreateShardRepFactor

Error Message:
Error from server at http://127.0.0.1:62651/solr: Could not find collection : 
testCreateShardRepFactor

Stack Trace:
org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error 
from server at http://127.0.0.1:62651/solr: Could not find collection : 
testCreateShardRepFactor
        at 
__randomizedtesting.SeedInfo.seed([70A6315911B648B8:8448BBDD09E25D78]:0)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:610)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:279)
        at 
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:268)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.doRequest(LBHttpSolrClient.java:447)
        at 
org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(LBHttpSolrClient.java:388)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.sendRequest(CloudSolrClient.java:1383)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:1134)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:1073)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:160)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:177)
        at 
org.apache.solr.cloud.CustomCollectionTest.testCreateShardRepFactor(CustomCollectionTest.java:190)
        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:745)


FAILED:  org.apache.solr.cloud.CustomCollectionTest.testRouteFieldForHashRouter

Error Message:
Collection not found: routeFieldColl

Stack Trace:
org.apache.solr.common.SolrException: Collection not found: routeFieldColl
        at 
__randomizedtesting.SeedInfo.seed([70A6315911B648B8:D890AF848ED7A3E2]:0)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.getCollectionNames(CloudSolrClient.java:1401)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:1094)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:1073)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:160)
        at 
org.apache.solr.client.solrj.request.UpdateRequest.commit(UpdateRequest.java:233)
        at 
org.apache.solr.cloud.CustomCollectionTest.testRouteFieldForHashRouter(CustomCollectionTest.java:166)
        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:745)


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

Error Message:
org.apache.solr.cloud.ForceLeaderTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ForceLeaderTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/ForceLeaderTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  org.apache.solr.cloud.FullSolrCloudDistribCmdsTest.test

Error Message:
Could not find collection:collection2

Stack Trace:
java.lang.AssertionError: Could not find collection:collection2
        at 
__randomizedtesting.SeedInfo.seed([70A6315911B648B8:F8F20E83BF4A2540]:0)
        at org.junit.Assert.fail(Assert.java:93)
        at org.junit.Assert.assertTrue(Assert.java:43)
        at org.junit.Assert.assertNotNull(Assert.java:526)
        at 
org.apache.solr.cloud.AbstractDistribZkTestBase.waitForRecoveriesToFinish(AbstractDistribZkTestBase.java:159)
        at 
org.apache.solr.cloud.AbstractDistribZkTestBase.waitForRecoveriesToFinish(AbstractDistribZkTestBase.java:144)
        at 
org.apache.solr.cloud.AbstractDistribZkTestBase.waitForRecoveriesToFinish(AbstractDistribZkTestBase.java:139)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.waitForRecoveriesToFinish(AbstractFullDistribZkTestBase.java:856)
        at 
org.apache.solr.cloud.FullSolrCloudDistribCmdsTest.testIndexingBatchPerRequestWithHttpSolrClient(FullSolrCloudDistribCmdsTest.java:620)
        at 
org.apache.solr.cloud.FullSolrCloudDistribCmdsTest.test(FullSolrCloudDistribCmdsTest.java:152)
        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$10.evaluate(RandomizedRunner.java:957)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:992)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:967)
        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:745)


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

Error Message:
org.apache.solr.cloud.OverseerTaskQueueTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.OverseerTaskQueueTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/OverseerTaskQueueTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.ReplaceNodeTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ReplaceNodeTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/ReplaceNodeTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.SolrCLIZkUtilsTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.SolrCLIZkUtilsTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/SolrCLIZkUtilsTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TestCloudRecovery

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.TestCloudRecovery
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TestCloudRecovery.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TestCollectionAPI

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.TestCollectionAPI
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TestCollectionAPI.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TestCryptoKeys

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.TestCryptoKeys
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TestCryptoKeys.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TestDistribDocBasedVersion

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.TestDistribDocBasedVersion
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TestDistribDocBasedVersion.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TestExclusionRuleCollectionAccess

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.TestExclusionRuleCollectionAccess
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TestExclusionRuleCollectionAccess.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TestRequestStatusCollectionAPI

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.TestRequestStatusCollectionAPI
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TestRequestStatusCollectionAPI.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

Error Message:
org.apache.solr.cloud.TriLevelCompositeIdRoutingTest

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.TriLevelCompositeIdRoutingTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/TriLevelCompositeIdRoutingTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  org.apache.solr.cloud.UnloadDistributedZkTest.test

Error Message:
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/core/src/test-files/solr/collection1/conf/solrconfig-tlog.xml
 (Too many open files)

Stack Trace:
java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/core/src/test-files/solr/collection1/conf/solrconfig-tlog.xml
 (Too many open files)
        at 
__randomizedtesting.SeedInfo.seed([70A6315911B648B8:F8F20E83BF4A2540]:0)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:294)
        at 
org.apache.commons.io.FileUtils.readFileToByteArray(FileUtils.java:1815)
        at 
org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:419)
        at 
org.apache.solr.cloud.AbstractZkTestCase.putConfig(AbstractZkTestCase.java:133)
        at 
org.apache.solr.cloud.AbstractZkTestCase.buildZooKeeper(AbstractZkTestCase.java:102)
        at 
org.apache.solr.cloud.AbstractZkTestCase.buildZooKeeper(AbstractZkTestCase.java:80)
        at 
org.apache.solr.cloud.AbstractDistribZkTestBase.distribSetUp(AbstractDistribZkTestBase.java:80)
        at 
org.apache.solr.cloud.AbstractFullDistribZkTestBase.distribSetUp(AbstractFullDistribZkTestBase.java:218)
        at 
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:962)
        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:745)


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

Error Message:
7 threads leaked from SUITE scope at 
org.apache.solr.cloud.UnloadDistributedZkTest:     1) Thread[id=7904, 
name=SessionTracker, state=TIMED_WAITING, group=TGRP-UnloadDistributedZkTest]   
      at java.lang.Object.wait(Native Method)         at 
org.apache.zookeeper.server.SessionTrackerImpl.run(SessionTrackerImpl.java:146) 
   2) Thread[id=7910, 
name=TEST-UnloadDistributedZkTest.test-seed#[70A6315911B648B8]-SendThread(127.0.0.1:62027),
 state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at 
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)         at 
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)         at 
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)    3) 
Thread[id=7911, 
name=TEST-UnloadDistributedZkTest.test-seed#[70A6315911B648B8]-EventThread, 
state=WAITING, group=TGRP-UnloadDistributedZkTest]         at 
sun.misc.Unsafe.park(Native Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:494)    
4) Thread[id=7912, name=zkCallback-1305-thread-1, state=TIMED_WAITING, 
group=TGRP-UnloadDistributedZkTest]         at sun.misc.Unsafe.park(Native 
Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
         at 
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
         at 
java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)         
at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
        at java.lang.Thread.run(Thread.java:745)    5) Thread[id=7902, 
name=Thread-1796, state=WAITING, group=TGRP-UnloadDistributedZkTest]         at 
java.lang.Object.wait(Native Method)         at 
java.lang.Thread.join(Thread.java:1249)         at 
java.lang.Thread.join(Thread.java:1323)         at 
org.apache.zookeeper.server.NIOServerCnxnFactory.join(NIOServerCnxnFactory.java:302)
         at 
org.apache.solr.cloud.ZkTestServer$ZKServerMain.runFromConfig(ZkTestServer.java:309)
         at org.apache.solr.cloud.ZkTestServer$2.run(ZkTestServer.java:490)    
6) Thread[id=7906, name=ProcessThread(sid:0 cport:-1):, state=WAITING, 
group=TGRP-UnloadDistributedZkTest]         at sun.misc.Unsafe.park(Native 
Method)         at 
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)         at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
         at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)     
    at 
org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:120)
    7) Thread[id=7903, name=NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0, 
state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at 
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)         at 
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)         at 
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:178)
         at java.lang.Thread.run(Thread.java:745)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 7 threads leaked from SUITE 
scope at org.apache.solr.cloud.UnloadDistributedZkTest: 
   1) Thread[id=7904, name=SessionTracker, state=TIMED_WAITING, 
group=TGRP-UnloadDistributedZkTest]
        at java.lang.Object.wait(Native Method)
        at 
org.apache.zookeeper.server.SessionTrackerImpl.run(SessionTrackerImpl.java:146)
   2) Thread[id=7910, 
name=TEST-UnloadDistributedZkTest.test-seed#[70A6315911B648B8]-SendThread(127.0.0.1:62027),
 state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]
        at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
        at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
        at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at 
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
   3) Thread[id=7911, 
name=TEST-UnloadDistributedZkTest.test-seed#[70A6315911B648B8]-EventThread, 
state=WAITING, group=TGRP-UnloadDistributedZkTest]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:494)
   4) Thread[id=7912, name=zkCallback-1305-thread-1, state=TIMED_WAITING, 
group=TGRP-UnloadDistributedZkTest]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
        at 
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
        at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
   5) Thread[id=7902, name=Thread-1796, state=WAITING, 
group=TGRP-UnloadDistributedZkTest]
        at java.lang.Object.wait(Native Method)
        at java.lang.Thread.join(Thread.java:1249)
        at java.lang.Thread.join(Thread.java:1323)
        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.join(NIOServerCnxnFactory.java:302)
        at 
org.apache.solr.cloud.ZkTestServer$ZKServerMain.runFromConfig(ZkTestServer.java:309)
        at org.apache.solr.cloud.ZkTestServer$2.run(ZkTestServer.java:490)
   6) Thread[id=7906, name=ProcessThread(sid:0 cport:-1):, state=WAITING, 
group=TGRP-UnloadDistributedZkTest]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at 
org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:120)
   7) Thread[id=7903, name=NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0, 
state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]
        at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
        at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
        at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:178)
        at java.lang.Thread.run(Thread.java:745)
        at __randomizedtesting.SeedInfo.seed([70A6315911B648B8]:0)


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

Error Message:
There are still zombie threads that couldn't be terminated:    1) 
Thread[id=7910, 
name=TEST-UnloadDistributedZkTest.test-seed#[70A6315911B648B8]-SendThread(127.0.0.1:62027),
 state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]         at 
sun.nio.ch.KQueueArrayWrapper.interrupt(Native Method)         at 
sun.nio.ch.KQueueArrayWrapper.interrupt(KQueueArrayWrapper.java:203)         at 
sun.nio.ch.KQueueSelectorImpl.wakeup(KQueueSelectorImpl.java:257)         at 
java.nio.channels.spi.AbstractSelector$1.interrupt(AbstractSelector.java:213)   
      at 
java.nio.channels.spi.AbstractSelector.begin(AbstractSelector.java:219)         
at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:116)         
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
         at 
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)    2) 
Thread[id=7912, name=zkCallback-1305-thread-1, state=TIMED_WAITING, 
group=TGRP-UnloadDistributedZkTest]         at sun.misc.Unsafe.park(Native 
Method)         at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)         
at 
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
         at 
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
         at 
java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)         
at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)   
      at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) 
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
        at java.lang.Thread.run(Thread.java:745)    3) Thread[id=7903, 
name=NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0, state=RUNNABLE, 
group=TGRP-UnloadDistributedZkTest]         at 
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)         at 
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)         at 
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)         at 
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)         at 
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)         at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:178)
         at java.lang.Thread.run(Thread.java:745)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
threads that couldn't be terminated:
   1) Thread[id=7910, 
name=TEST-UnloadDistributedZkTest.test-seed#[70A6315911B648B8]-SendThread(127.0.0.1:62027),
 state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]
        at sun.nio.ch.KQueueArrayWrapper.interrupt(Native Method)
        at sun.nio.ch.KQueueArrayWrapper.interrupt(KQueueArrayWrapper.java:203)
        at sun.nio.ch.KQueueSelectorImpl.wakeup(KQueueSelectorImpl.java:257)
        at 
java.nio.channels.spi.AbstractSelector$1.interrupt(AbstractSelector.java:213)
        at 
java.nio.channels.spi.AbstractSelector.begin(AbstractSelector.java:219)
        at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:116)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at 
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
   2) Thread[id=7912, name=zkCallback-1305-thread-1, state=TIMED_WAITING, 
group=TGRP-UnloadDistributedZkTest]
        at sun.misc.Unsafe.park(Native Method)
        at 
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at 
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
        at 
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
        at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
        at 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
   3) Thread[id=7903, name=NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0, 
state=RUNNABLE, group=TGRP-UnloadDistributedZkTest]
        at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
        at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
        at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at 
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:178)
        at java.lang.Thread.run(Thread.java:745)
        at __randomizedtesting.SeedInfo.seed([70A6315911B648B8]:0)


FAILED:  junit.framework.TestSuite.org.apache.solr.cloud.hdfs.HdfsThreadLeakTest

Error Message:
org.apache.solr.cloud.hdfs.HdfsThreadLeakTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.hdfs.HdfsThreadLeakTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/hdfs/HdfsThreadLeakTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.cloud.rule.ImplicitSnitchTest

Error Message:
org.apache.solr.cloud.rule.ImplicitSnitchTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.rule.ImplicitSnitchTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/cloud/rule/ImplicitSnitchTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.HdfsDirectoryFactoryTest

Error Message:
org.apache.solr.core.HdfsDirectoryFactoryTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.HdfsDirectoryFactoryTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/HdfsDirectoryFactoryTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.OpenCloseCoreStressTest

Error Message:
org.apache.solr.core.OpenCloseCoreStressTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.OpenCloseCoreStressTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/OpenCloseCoreStressTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.RequestHandlersTest

Error Message:
org.apache.solr.core.RequestHandlersTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.RequestHandlersTest
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/RequestHandlersTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.TestCodecSupport

Error Message:
org.apache.solr.core.TestCodecSupport

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.TestCodecSupport
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/TestCodecSupport.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.TestCoreDiscovery

Error Message:
org.apache.solr.core.TestCoreDiscovery

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.TestCoreDiscovery
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/TestCoreDiscovery.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.TestInitParams

Error Message:
org.apache.solr.core.TestInitParams

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.TestInitParams
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/TestInitParams.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.core.TestReloadAndDeleteDocs

Error Message:
org.apache.solr.core.TestReloadAndDeleteDocs

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.core.TestReloadAndDeleteDocs
        at java.net.URLClassLoader$1.run(URLClassLoader.java:370)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.instantiate(SlaveMain.java:273)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:233)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:355)
        at 
com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:13)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/core/TestReloadAndDeleteDocs.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


FAILED:  junit.framework.TestSuite.org.apache.solr.handler.JsonLoaderTest

Error Message:
invalid API spec: apispec/cores.core.Commands.json

Stack Trace:
java.lang.RuntimeException: invalid API spec: apispec/cores.core.Commands.json
        at __randomizedtesting.SeedInfo.seed([70A6315911B648B8]:0)
        at 
org.apache.solr.common.util.ValidatingJsonMap.parse(ValidatingJsonMap.java:318)
        at org.apache.solr.api.ApiBag.lambda$getSpec$0(ApiBag.java:229)
        at org.apache.solr.api.Api.getSpec(Api.java:64)
        at org.apache.solr.api.ApiBag.register(ApiBag.java:72)
        at org.apache.solr.core.PluginBag.put(PluginBag.java:215)
        at org.apache.solr.core.PluginBag.put(PluginBag.java:186)
        at 
org.apache.solr.core.CoreContainer.createHandler(CoreContainer.java:1332)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:490)
        at org.apache.solr.util.TestHarness.<init>(TestHarness.java:177)
        at org.apache.solr.util.TestHarness.<init>(TestHarness.java:140)
        at org.apache.solr.util.TestHarness.<init>(TestHarness.java:146)
        at org.apache.solr.util.TestHarness.<init>(TestHarness.java:109)
        at org.apache.solr.SolrTestCaseJ4.createCore(SolrTestCaseJ4.java:705)
        at org.apache.solr.SolrTestCaseJ4.initCore(SolrTestCaseJ4.java:695)
        at org.apache.solr.SolrTestCaseJ4.initCore(SolrTestCaseJ4.java:569)
        at org.apache.solr.SolrTestCaseJ4.initCore(SolrTestCaseJ4.java:558)
        at 
org.apache.solr.handler.JsonLoaderTest.beforeTests(JsonLoaderTest.java:40)
        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$6.evaluate(RandomizedRunner.java:847)
        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:745)


FAILED:  junit.framework.TestSuite.org.apache.solr.handler.JsonLoaderTest

Error Message:
Could not remove the following files (in the order of attempts):    
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J1/temp/solr.handler.JsonLoaderTest_70A6315911B648B8-001/init-core-data-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J1/temp/solr.handler.JsonLoaderTest_70A6315911B648B8-001/init-core-data-001:
 Too many open files    
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J1/temp/solr.handler.JsonLoaderTest_70A6315911B648B8-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J1/temp/solr.handler.JsonLoaderTest_70A6315911B648B8-001:
 Too many open files 

Stack Trace:
java.io.IOException: Could not remove the following files (in the order of 
attempts):
   
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J1/temp/solr.handler.JsonLoaderTest_70A6315911B648B8-001/init-core-data-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J1/temp/solr.hand

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

t, SampleTest, TestSolrIndexConfig, CachingDirectoryFactoryTest, 
TestStressRecovery, SchemaVersionSpecificBehaviorTest, TestFieldResource, 
TestFieldCacheVsDocValues, SharedFSAutoReplicaFailoverTest, 
TestManagedResource, DeleteStatusTest, HdfsDirectoryTest, 
OpenExchangeRatesOrgProviderTest, TestDefaultSearchFieldResource, 
HdfsBasicDistributedZkTest, TestRTGBase, InfoHandlerTest, RemoteQueryErrorTest, 
EnumFieldTest, TimeZoneUtilsTest, RollingRestartTest, TestMiniSolrCloudCluster, 
ShufflingReplicaListTransformerTest, TestLocalFSCloudBackupRestore, 
SolrCloudExampleTest, TestStressVersions, V2ApiIntegrationTest, 
ConjunctionSolrSpellCheckerTest, TestExtendedDismaxParser, 
FastVectorHighlighterTest, TestXIncludeConfig, 
DocumentAnalysisRequestHandlerTest, ChaosMonkeyNothingIsSafeTest, 
AddBlockUpdateTest, TestCSVResponseWriter, TestJmxIntegration, 
TestSSLRandomization, TestImpersonationWithHadoopAuth, BadComponentTest, 
ExitableDirectoryReaderTest, JSONWriterTest, QueryElevationComponentTest, 
DistributedDebugComponentTest, CollectionsAPIAsyncDistributedZkTest, 
TestRestManager, SimpleFacetsTest, TestBinaryField, 
DistributedMLTComponentTest, PingRequestHandlerTest, 
DistributedFacetExistsSmallTest, JSONWriterTest, QueryResultKeyTest, 
TestSolrDeletionPolicy1, SparseHLLTest, TestComponentsName, 
TestManagedSchemaAPI, SystemInfoHandlerTest, TestBulkSchemaConcurrent, 
DistributedFacetPivotSmallTest, TestSolrCloudWithDelegationTokens, 
TlogReplayBufferedWhileIndexingTest, TestCollationField, BlockDirectoryTest, 
TestStressReorder, TestCursorMarkWithoutUniqueKey, 
DistributedSpellCheckComponentTest, DeleteLastCustomShardedReplicaTest, 
AnalysisAfterCoreReloadTest, SmileWriterTest, StandardRequestHandlerTest, 
SolrCoreMetricManagerTest, LargeFieldTest, IndexBasedSpellCheckerTest, 
TestSha256AuthenticationProvider, ConcurrentDeleteAndCreateCollectionTest, 
TestSort, TestConfigReload, TestConfigSetsAPIZkFailure, CoreSorterTest, 
TestRandomDVFaceting, SimplePostToolTest, SyncSliceTest, TestLazyCores, 
TestAuthenticationFramework, HdfsNNFailoverTest, TestMaxScoreQueryParser, 
DateFieldTest, TestSolrJ, SOLR749Test, ZkStateWriterTest, PeerSyncTest, 
ClusterStateUpdateTest, TestNRTOpen, AnalyticsQueryTest, 
BaseCdcrDistributedZkTest, HdfsRecoveryZkTest, TestLRUCache, 
TestSweetSpotSimilarityFactory, TestLeaderElectionZkExpiry, 
XsltUpdateRequestHandlerTest, TestStressLucene, 
TestRandomCollapseQParserPlugin, DirectSolrSpellCheckerTest, ShardRoutingTest, 
MultiTermTest, CloudExitableDirectoryReaderTest, TestPointFields, 
ZkNodePropsTest, TestExactStatsCache, DocValuesNotIndexedTest, 
TestSolrConfigHandlerConcurrent, TestFileDictionaryLookup, SolrCoreTest, 
SuggestComponentContextFilterQueryTest, TestSQLHandlerNonCloud, 
WrapperMergePolicyFactoryTest, TestMultiWordSynonyms, PluginInfoTest, 
TestSolrCloudSnapshots, TestSolrDynamicMBean, TestSolrFieldCacheMBean, 
TestDownShardTolerantSearch, DocumentBuilderTest, 
TestSolrCloudWithSecureImpersonation, TestReloadDeadlock, 
TestHighlightDedupGrouping, OverriddenZkACLAndCredentialsProvidersTest, 
TestCloudPseudoReturnFields, RecoveryZkTest, PolyFieldTest, 
SimpleMLTQParserTest, BlockJoinFacetDistribTest, 
TestManagedSynonymFilterFactory, RequestLoggingTest, HLLSerializationTest, 
PropertiesRequestHandlerTest, TestHdfsUpdateLog, TestSchemalessBufferedUpdates, 
TestUnifiedSolrHighlighter, TestStressInPlaceUpdates, DateRangeFieldTest, 
TestRequestForwarding, TestCharFilters, PreAnalyzedUpdateProcessorTest, 
JavabinLoaderTest, TestFilteredDocIdSet, 
TestDistributedStatsComponentCardinality, UtilsToolTest, TestDocTermOrds, 
TestPhraseSuggestions, HttpSolrCallGetCoreTest, 
TestComplexPhraseLeadingWildcard, TestShortCircuitedRequests, 
TestScoreJoinQPNoScore, AlternateDirectoryTest, TestStressUserVersions, 
TestPseudoReturnFields, TemplateUpdateProcessorTest, TestSimpleQParserPlugin, 
PathHierarchyTokenizerFactoryTest, TestConfigSetProperties, QueryEqualityTest, 
TestConfigsApi, TestDistribIDF, CustomCollectionTest, TestHashQParserPlugin]
   [junit4] Completed [701/704 (81!)] on J0 in 0.71s, 1 test, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.search.TestSolr4Spatial2
   [junit4] ERROR   0.00s J0 | TestSolr4Spatial2 (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.search.TestSolr4Spatial2
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:370)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:362)
   [junit4]    >        at java.security.AccessController.doPrivileged(Native 
Method)
   [junit4]    >        at 
java.net.URLClassLoader.findClass(URLClassLoader.java:361)
   [junit4]    >        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   [junit4]    >        at 
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
   [junit4]    >        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
   [junit4]    >        at java.lang.Class.forName0(Native Method)
   [junit4]    >        at java.lang.Class.forName(Class.java:348)
   [junit4]    > Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/search/TestSolr4Spatial2.class
 (Too many open files)
   [junit4]    >        at java.io.FileInputStream.open0(Native Method)
   [junit4]    >        at 
java.io.FileInputStream.open(FileInputStream.java:195)
   [junit4]    >        at 
java.io.FileInputStream.<init>(FileInputStream.java:138)
   [junit4]    >        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
   [junit4]    >        at sun.misc.Resource.cachedInputStream(Resource.java:77)
   [junit4]    >        at sun.misc.Resource.getByteBuffer(Resource.java:160)
   [junit4]    >        at 
java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
   [junit4]    >        at 
java.net.URLClassLoader.access$100(URLClassLoader.java:73)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:368)
   [junit4]    >        ... 12 more
   [junit4] Completed [702/704 (82!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.handler.TestReplicationHandler
   [junit4] ERROR   0.00s J0 | TestReplicationHandler (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.handler.TestReplicationHandler
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:370)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:362)
   [junit4]    >        at java.security.AccessController.doPrivileged(Native 
Method)
   [junit4]    >        at 
java.net.URLClassLoader.findClass(URLClassLoader.java:361)
   [junit4]    >        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   [junit4]    >        at 
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
   [junit4]    >        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
   [junit4]    >        at java.lang.Class.forName0(Native Method)
   [junit4]    >        at java.lang.Class.forName(Class.java:348)
   [junit4]    > Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/handler/TestReplicationHandler.class
 (Too many open files)
   [junit4]    >        at java.io.FileInputStream.open0(Native Method)
   [junit4]    >        at 
java.io.FileInputStream.open(FileInputStream.java:195)
   [junit4]    >        at 
java.io.FileInputStream.<init>(FileInputStream.java:138)
   [junit4]    >        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
   [junit4]    >        at sun.misc.Resource.cachedInputStream(Resource.java:77)
   [junit4]    >        at sun.misc.Resource.getByteBuffer(Resource.java:160)
   [junit4]    >        at 
java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
   [junit4]    >        at 
java.net.URLClassLoader.access$100(URLClassLoader.java:73)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:368)
   [junit4]    >        ... 12 more
   [junit4] Completed [703/704 (83!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.rest.schema.TestDynamicFieldResource
   [junit4] ERROR   0.00s J0 | TestDynamicFieldResource (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.rest.schema.TestDynamicFieldResource
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:370)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:362)
   [junit4]    >        at java.security.AccessController.doPrivileged(Native 
Method)
   [junit4]    >        at 
java.net.URLClassLoader.findClass(URLClassLoader.java:361)
   [junit4]    >        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   [junit4]    >        at 
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
   [junit4]    >        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
   [junit4]    >        at java.lang.Class.forName0(Native Method)
   [junit4]    >        at java.lang.Class.forName(Class.java:348)
   [junit4]    > Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/classes/test/org/apache/solr/rest/schema/TestDynamicFieldResource.class
 (Too many open files)
   [junit4]    >        at java.io.FileInputStream.open0(Native Method)
   [junit4]    >        at 
java.io.FileInputStream.open(FileInputStream.java:195)
   [junit4]    >        at 
java.io.FileInputStream.<init>(FileInputStream.java:138)
   [junit4]    >        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
   [junit4]    >        at sun.misc.Resource.cachedInputStream(Resource.java:77)
   [junit4]    >        at sun.misc.Resource.getByteBuffer(Resource.java:160)
   [junit4]    >        at 
java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
   [junit4]    >        at 
java.net.URLClassLoader.access$100(URLClassLoader.java:73)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:368)
   [junit4]    >        ... 12 more
   [junit4] Completed [704/704 (84!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 43414 lines...]


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