[JENKINS] Lucene-Solr-6.x-MacOSX (64bit/jdk1.8.0) - Build # 711 - Still Unstable!

[Policeman Jenkins Server]

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-6.x-MacOSX/711/
Java: 64bit/jdk1.8.0 -XX:-UseCompressedOops -XX:+UseParallelGC

324 tests failed.
FAILED:  junit.framework.TestSuite.org.apache.solr.AnalysisAfterCoreReloadTest

Error Message:
org.apache.solr.AnalysisAfterCoreReloadTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.AnalysisAfterCoreReloadTest
        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/AnalysisAfterCoreReloadTest.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.BasicFunctionalityTest

Error Message:
org.apache.solr.BasicFunctionalityTest

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

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

Error Message:
org.apache.solr.EchoParamsTest

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.EchoParamsTest
        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/EchoParamsTest.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.TestDistributedGrouping

Error Message:
org.apache.solr.TestDistributedGrouping

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestDistributedGrouping
        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/TestDistributedGrouping.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.TestDistributedSearch

Error Message:
org.apache.solr.TestDistributedSearch

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestDistributedSearch
        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/TestDistributedSearch.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.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.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.TestTrie

Error Message:
org.apache.solr.TestTrie

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.TestTrie
        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/TestTrie.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.TestWordDelimiterFilterFactory

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.analysis.TestWordDelimiterFilterFactory
        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/TestWordDelimiterFilterFactory.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.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.AssignTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.AssignTest
        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/AssignTest.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.BasicDistributedZk2Test

Error Message:
org.apache.solr.cloud.BasicDistributedZk2Test

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.BasicDistributedZk2Test
        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/BasicDistributedZk2Test.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.BasicZkTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.BasicZkTest
        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/BasicZkTest.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.CdcrVersionReplicationTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.CdcrVersionReplicationTest
        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/CdcrVersionReplicationTest.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.CloudExitableDirectoryReaderTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.CloudExitableDirectoryReaderTest
        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/CloudExitableDirectoryReaderTest.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.ClusterStateUpdateTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ClusterStateUpdateTest
        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/ClusterStateUpdateTest.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.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.ConcurrentDeleteAndCreateCollectionTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.ConcurrentDeleteAndCreateCollectionTest
        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/ConcurrentDeleteAndCreateCollectionTest.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.ConfigSetsAPITest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ConfigSetsAPITest
        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/ConfigSetsAPITest.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.ConnectionManagerTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ConnectionManagerTest
        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/ConnectionManagerTest.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.DeleteLastCustomShardedReplicaTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.DeleteLastCustomShardedReplicaTest
        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/DeleteLastCustomShardedReplicaTest.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.DeleteNodeTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.DeleteNodeTest
        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/DeleteNodeTest.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.DeleteShardTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.DeleteShardTest
        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/DeleteShardTest.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.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.DistributedVersionInfoTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.DistributedVersionInfoTest
        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/DistributedVersionInfoTest.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.LeaderElectionContextKeyTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.LeaderElectionContextKeyTest
        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/LeaderElectionContextKeyTest.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.LeaderInitiatedRecoveryOnShardRestartTest

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

Stack Trace:
java.lang.ClassNotFoundException: 
org.apache.solr.cloud.LeaderInitiatedRecoveryOnShardRestartTest
        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/LeaderInitiatedRecoveryOnShardRestartTest.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.OverseerRolesTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.OverseerRolesTest
        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/OverseerRolesTest.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.OverseerStatusTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.OverseerStatusTest
        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/OverseerStatusTest.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.OverseerTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.OverseerTest
        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/OverseerTest.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.PeerSyncReplicationTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.PeerSyncReplicationTest
        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/PeerSyncReplicationTest.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.RecoveryZkTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.RecoveryZkTest
        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/RecoveryZkTest.class
 (Too many open files)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at 
sun.misc.URLClassPath$FileLoader$1.getInputStream(URLClassPath.java:1288)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:454)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        ... 12 more


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

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

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


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

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.RollingRestartTest
        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/RollingRestartTest.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.SSLMigrationTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.SSLMigrationTest
        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/SSLMigrationTest.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.SaslZkACLProviderTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.SaslZkACLProviderTest
        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/SaslZkACLProviderTest.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.ShardRoutingTest

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

Stack Trace:
java.lang.ClassNotFoundException: org.apache.solr.cloud.ShardRoutingTest
        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/ShardRoutingTest.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.ShardSplitTest

Error Messa

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

URLClassLoader.access$100(URLClassLoader.java:73)
   [junit4]    >        at 
java.net.URLClassLoader$1.run(URLClassLoader.java:368)
   [junit4]    >        ... 12 more
   [junit4] Completed [689/695 (305!)] on J1 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.ExplicitHLLTest
   [junit4] ERROR   0.00s J1 | 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 [690/695 (306!)] on J1 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.HLLSerializationTest
   [junit4] ERROR   0.00s J1 | HLLSerializationTest (suite) <<<
   [junit4]    > Throwable #1: java.lang.ClassNotFoundException: 
org.apache.solr.util.hll.HLLSerializationTest
   [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/HLLSerializationTest.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 [691/695 (307!)] on J1 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.HLLUtilTest
   [junit4] ERROR   0.00s J1 | 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 [692/695 (308!)] on J1 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.hll.SparseHLLTest
   [junit4] ERROR   0.00s J1 | 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 [693/695 (309!)] on J1 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 1 lines...]
   [junit4] Suite: org.apache.solr.util.stats.MetricUtilsTest
   [junit4] ERROR   0.00s J1 | 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 [694/695 (310!)] on J1 in 0.00s, 0 tests, 1 error <<< 
FAILURES!

[...truncated 62681 lines...]


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