[JENKINS] Lucene-Solr-6.x-MacOSX (64bit/jdk1.8.0) - Build # 734 - Unstable!

[Policeman Jenkins Server]

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-6.x-MacOSX/734/
Java: 64bit/jdk1.8.0 -XX:-UseCompressedOops -XX:+UseParallelGC

331 tests failed.
FAILED:  junit.framework.TestSuite.org.apache.solr.ConvertedLegacyTest

Error Message:
org.apache.solr.ConvertedLegacyTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.ConvertedLegacyTest
        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/ConvertedLegacyTest.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.CursorPagingTest

Error Message:
Error loading SPI class list from URL: 
file:/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/lucene/build/test-framework/classes/java/META-INF/services/org.apache.lucene.codecs.PostingsFormat

Stack Trace:
java.util.ServiceConfigurationError: Error loading SPI class list from URL: 
file:/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/lucene/build/test-framework/classes/java/META-INF/services/org.apache.lucene.codecs.PostingsFormat
        at __randomizedtesting.SeedInfo.seed([2503A130633E4648]:0)
        at 
org.apache.lucene.util.SPIClassIterator.loadNextProfile(SPIClassIterator.java:133)
        at 
org.apache.lucene.util.SPIClassIterator.hasNext(SPIClassIterator.java:145)
        at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:69)
        at 
org.apache.lucene.codecs.PostingsFormat.reloadPostingsFormats(PostingsFormat.java:132)
        at 
org.apache.solr.core.SolrResourceLoader.reloadLuceneSPI(SolrResourceLoader.java:237)
        at 
org.apache.solr.core.SolrResourceLoader.<init>(SolrResourceLoader.java:182)
        at 
org.apache.solr.core.SolrResourceLoader.<init>(SolrResourceLoader.java:142)
        at org.apache.solr.core.SolrConfig.<init>(SolrConfig.java:174)
        at org.apache.solr.util.TestHarness.createConfig(TestHarness.java:86)
        at org.apache.solr.SolrTestCaseJ4.createCore(SolrTestCaseJ4.java:738)
        at org.apache.solr.SolrTestCaseJ4.initCore(SolrTestCaseJ4.java:731)
        at org.apache.solr.SolrTestCaseJ4.initCore(SolrTestCaseJ4.java:559)
        at org.apache.solr.SolrTestCaseJ4.initCore(SolrTestCaseJ4.java:548)
        at 
org.apache.solr.CursorPagingTest.beforeTests(CursorPagingTest.java:68)
        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)
Caused by: java.io.FileNotFoundException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/lucene/build/test-framework/classes/java/META-INF/services/org.apache.lucene.codecs.PostingsFormat
 (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 java.io.FileInputStream.<init>(FileInputStream.java:93)
        at 
sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90)
        at 
sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188)
        at java.net.URL.openStream(URL.java:1045)
        at 
org.apache.lucene.util.SPIClassIterator.loadNextProfile(SPIClassIterator.java:109)
        ... 37 more


FAILED:  junit.framework.TestSuite.org.apache.solr.CursorPagingTest

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/J0/temp/solr.CursorPagingTest_2503A130633E4648-001/init-core-data-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J0/temp/solr.CursorPagingTest_2503A130633E4648-001/init-core-data-001:
 Too many open files    
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J0/temp/solr.CursorPagingTest_2503A130633E4648-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J0/temp/solr.CursorPagingTest_2503A130633E4648-001:
 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/J0/temp/solr.CursorPagingTest_2503A130633E4648-001/init-core-data-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J0/temp/solr.CursorPagingTest_2503A130633E4648-001/init-core-data-001:
 Too many open files
   
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J0/temp/solr.CursorPagingTest_2503A130633E4648-001:
 java.nio.file.FileSystemException: 
/Users/jenkins/workspace/Lucene-Solr-6.x-MacOSX/solr/build/solr-core/test/J0/temp/solr.CursorPagingTest_2503A130633E4648-001:
 Too many open files

        at org.apache.lucene.util.IOUtils.rm(IOUtils.java:323)
        at 
org.apache.lucene.util.TestRuleTemporaryFilesCleanup.afterAlways(TestRuleTemporaryFilesCleanup.java:216)
        at 
com.carrotsearch.randomizedtesting.rules.TestRuleAdapter$1.afterAlways(TestRuleAdapter.java:31)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:43)
        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.DisMaxRequestHandlerTest

Error Message:
org.apache.solr.DisMaxRequestHandlerTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.DisMaxRequestHandlerTest
        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/DisMaxRequestHandlerTest.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.DistributedIntervalFacetingTest

Error Message:
org.apache.solr.DistributedIntervalFacetingTest

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.DistributedIntervalFacetingTest
        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/DistributedIntervalFacetingTest.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.OutputWriterTest

Error Message:
org.apache.solr.OutputWriterTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.OutputWriterTest
        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/OutputWriterTest.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.SolrInfoMBeanTest

Error Message:
org.apache.solr.SolrInfoMBeanTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.SolrInfoMBeanTest
        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/SolrInfoMBeanTest.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.SolrTestCaseJ4Test

Error Message:
org.apache.solr.SolrTestCaseJ4Test

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.SolrTestCaseJ4Test
        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/SolrTestCaseJ4Test.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.TestCursorMarkWithoutUniqueKey

Error Message:
org.apache.solr.TestCursorMarkWithoutUniqueKey

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestCursorMarkWithoutUniqueKey
        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/TestCursorMarkWithoutUniqueKey.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.TestDocumentBuilder

Error Message:
org.apache.solr.TestDocumentBuilder

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestDocumentBuilder
        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/TestDocumentBuilder.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.TestGroupingSearch

Error Message:
org.apache.solr.TestGroupingSearch

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestGroupingSearch
        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/TestGroupingSearch.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.TestHighlightDedupGrouping

Error Message:
org.apache.solr.TestHighlightDedupGrouping

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestHighlightDedupGrouping
        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/TestHighlightDedupGrouping.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.TestJoin

Error Message:
org.apache.solr.TestJoin

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestJoin
        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/TestJoin.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.TestSimpleTrackingShardHandler

Error Message:
org.apache.solr.TestSimpleTrackingShardHandler

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestSimpleTrackingShardHandler
        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/TestSimpleTrackingShardHandler.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.TestSolrCoreProperties

Error Message:
org.apache.solr.TestSolrCoreProperties

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestSolrCoreProperties
        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/TestSolrCoreProperties.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.TestTolerantSearch

Error Message:
org.apache.solr.TestTolerantSearch

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestTolerantSearch
        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/TestTolerantSearch.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.analysis.TestCharFilters

Error Message:
org.apache.solr.analysis.TestCharFilters

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.analysis.TestCharFilters
        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/analysis/TestCharFilters.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.analysis.TestLuceneMatchVersion

Error Message:
org.apache.solr.analysis.TestLuceneMatchVersion

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.analysis.TestLuceneMatchVersion
        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/analysis/TestLuceneMatchVersion.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.analysis.TestReversedWildcardFilterFactory

Error Message:
org.apache.solr.analysis.TestReversedWildcardFilterFactory

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.analysis.TestReversedWildcardFilterFactory
        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/analysis/TestReversedWildcardFilterFactory.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.embedded.TestEmbeddedSolrServerSchemaAPI

Error Message:
org.apache.solr.client.solrj.embedded.TestEmbeddedSolrServerSchemaAPI

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.client.solrj.embedded.TestEmbeddedSolrServerSchemaAPI
        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/embedded/TestEmbeddedSolrServerSchemaAPI.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.embedded.TestJettySolrRunner

Error Message:
org.apache.solr.client.solrj.embedded.TestJettySolrRunner

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.client.solrj.embedded.TestJettySolrRunner
        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/embedded/TestJettySolrRunner.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:  junit.framework.TestSuite.org.apache.solr.cloud.ActionThrottleTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ActionThrottleTest
        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/ActionThrottleTest.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.AliasIntegrationTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.AliasIntegrationTest
        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/AliasIntegrationTest.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.CdcrBootstrapTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.CdcrBootstrapTest
        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/CdcrBootstrapTest.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.CdcrReplicationHandlerTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.CdcrReplicationHandlerTest
        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/CdcrReplicationHandlerTest.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.CdcrRequestHandlerTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.CdcrRequestHandlerTest
        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/CdcrRequestHandlerTest.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.ChaosMonkeyShardSplitTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.ChaosMonkeyShardSplitTest
        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/ChaosMonkeyShardSplitTest.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.CleanupOldIndexTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.CleanupOldIndexTest
        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/CleanupOldIndexTest.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.ClusterStateTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ClusterStateTest
        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/ClusterStateTest.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.CollectionReloadTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.CollectionReloadTest
        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/CollectionReloadTest.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.CollectionStateFormat2Test

Error Message:
org.apache.solr.cloud.CollectionStateFormat2Test

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.CollectionStateFormat2Test
        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/CollectionStateFormat2Test.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.CollectionTooManyReplicasTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.CollectionTooManyReplicasTest
        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/CollectionTooManyReplicasTest.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.CreateCollectionCleanupTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.CreateCollectionCleanupTest
        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/CreateCollectionCleanupTest.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.testRouteFieldForImplicitRouter

Error Message:
Collection not found: withShardField

Stack Trace:
org.apache.solr.common.SolrException: Collection not found: withShardField
        at 
__randomizedtesting.SeedInfo.seed([2503A130633E4648:705349A2CFC789B8]:0)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.getCollectionNames(CloudSolrClient.java:1379)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:1072)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:1042)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:160)
        at 
org.apache.solr.client.solrj.request.UpdateRequest.commit(UpdateRequest.java:232)
        at 
org.apache.solr.cloud.CustomCollectionTest.testRouteFieldForImplicitRouter(CustomCollectionTest.java:141)
        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([2503A130633E4648:8D353FEDFC5FAD12]:0)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.getCollectionNames(CloudSolrClient.java:1379)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:1072)
        at 
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:1042)
        at 
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:160)
        at 
org.apache.solr.client.solrj.request.UpdateRequest.commit(UpdateRequest.java:232)
        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.DeleteStatusTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.DeleteStatusTest
        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/DeleteStatusTest.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.DistribCursorPagingTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.DistribCursorPagingTest
        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/DistribCursorPagingTest.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.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([2503A130633E4648:AD579EEACDC22BB0]: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:865)
        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.LeaderFailoverAfterPartitionTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.LeaderFailoverAfterPartitionTest
        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/LeaderFailoverAfterPartitionTest.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.LeaderInitiatedRecoveryOnCommitTest

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

Stack Trace:
java.

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

ava.net.URLClassLoader.access$100(URLClassLoader.java:73)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:368)
   [junit4]    >        ... 12 more
   [junit4] Completed [690/697 (314!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 4 lines...]
   [junit4] Suite: org.apache.solr.util.TestSolrCLIRunExample
   [junit4] ERROR   0.00s J0 | TestSolrCLIRunExample (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.util.TestSolrCLIRunExample
   [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/util/TestSolrCLIRunExample.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 [692/697 (315!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.ExplicitHLLTest
   [junit4] ERROR   0.00s J0 | ExplicitHLLTest (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.util.hll.ExplicitHLLTest
   [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/util/hll/ExplicitHLLTest.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 [693/697 (316!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.HLLUtilTest
   [junit4] ERROR   0.00s J0 | HLLUtilTest (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.util.hll.HLLUtilTest
   [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/util/hll/HLLUtilTest.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 [694/697 (317!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.SparseHLLTest
   [junit4] ERROR   0.00s J0 | SparseHLLTest (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.util.hll.SparseHLLTest
   [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/util/hll/SparseHLLTest.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 [695/697 (318!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 4 lines...]
   [junit4] Suite: org.apache.solr.util.stats.MetricUtilsTest
   [junit4] ERROR   0.00s J0 | MetricUtilsTest (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.util.stats.MetricUtilsTest
   [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/util/stats/MetricUtilsTest.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 [697/697 (319!)] on J0 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 62696 lines...]


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