Thanks Rob.  This test does easily eat file descriptors...

Mike McCandless

http://blog.mikemccandless.com

On Sat, Jan 10, 2015 at 3:31 PM, Robert Muir <rcm...@gmail.com> wrote:
> I committed a fix.
>
> On Sat, Jan 10, 2015 at 9:44 AM, Apache Jenkins Server
> <jenk...@builds.apache.org> wrote:
>> Build: https://builds.apache.org/job/Lucene-Solr-NightlyTests-5.x/730/
>>
>> 1 tests failed.
>> REGRESSION:  
>> org.apache.lucene.index.TestDemoParallelLeafReader.testRandomMultipleSchemaGensSameField
>>
>> Error Message:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/index/_az_TestBloomFilteredLucenePostings_0.tim:
>>  Too many open files
>>
>> Stack Trace:
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/index/_az_TestBloomFilteredLucenePostings_0.tim:
>>  Too many open files
>>         at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>         at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>         at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>         at java.nio.file.Files.newOutputStream(Files.java:172)
>>         at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>         at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>         at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>         at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>         at 
>> org.apache.lucene.codecs.blocktree.BlockTreeTermsWriter.<init>(BlockTreeTermsWriter.java:278)
>>         at 
>> org.apache.lucene.codecs.lucene50.Lucene50PostingsFormat.fieldsConsumer(Lucene50PostingsFormat.java:433)
>>         at 
>> org.apache.lucene.codecs.bloom.BloomFilteringPostingsFormat.fieldsConsumer(BloomFilteringPostingsFormat.java:147)
>>         at 
>> org.apache.lucene.codecs.bloom.TestBloomFilteredLucenePostings.fieldsConsumer(TestBloomFilteredLucenePostings.java:66)
>>         at 
>> org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.write(PerFieldPostingsFormat.java:196)
>>         at 
>> org.apache.lucene.index.FreqProxTermsWriter.flush(FreqProxTermsWriter.java:107)
>>         at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:112)
>>         at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>         at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>         at 
>> org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:373)
>>         at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:466)
>>         at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>         at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>         at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>         at 
>> org.apache.lucene.index.TestDemoParallelLeafReader.testRandomMultipleSchemaGensSameField(TestDemoParallelLeafReader.java:1076)
>>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>         at 
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>         at 
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>         at java.lang.reflect.Method.invoke(Method.java:606)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1618)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:827)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:863)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:877)
>>         at 
>> org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
>>         at 
>> org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:55)
>>         at 
>> org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
>>         at 
>> org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>>         at 
>> org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>>         at 
>> com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>>         at 
>> com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
>>         at 
>> com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:836)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:738)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:772)
>>         at 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:783)
>>         at 
>> org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>>         at 
>> org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:55)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>>         at 
>> org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
>>         at 
>> org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>>         at 
>> org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>>         at 
>> org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
>>         at 
>> com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>>         at 
>> com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>>         at java.lang.Thread.run(Thread.java:745)
>>
>>
>>
>>
>> Build Log:
>> [...truncated 1862 lines...]
>>    [junit4] Suite: org.apache.lucene.index.TestDemoParallelLeafReader
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #1,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyvp_40/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyvp_40/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:76)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1678)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1658)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:851)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #12,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz6a_43/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz6a_43/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.<init>(CompressingStoredFieldsWriter.java:105)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsFormat.fieldsWriter(CompressingStoredFieldsFormat.java:128)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.lucene50.Lucene50StoredFieldsFormat.fieldsWriter(Lucene50StoredFieldsFormat.java:179)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.asserting.AssertingStoredFieldsFormat.fieldsWriter(AssertingStoredFieldsFormat.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.initStoredFieldsWriter(DefaultIndexingChain.java:81)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.startStoredFields(DefaultIndexingChain.java:258)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:295)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:231)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:449)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:835)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #6,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyzj_43/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyzj_43/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:76)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1678)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1658)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:851)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #16,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzbm_45/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzbm_45/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:79)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:963)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1008)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:854)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #14,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz93_44/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz93_44/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.<init>(CompressingStoredFieldsWriter.java:105)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsFormat.fieldsWriter(CompressingStoredFieldsFormat.java:128)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.lucene50.Lucene50StoredFieldsFormat.fieldsWriter(Lucene50StoredFieldsFormat.java:179)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.asserting.AssertingStoredFieldsFormat.fieldsWriter(AssertingStoredFieldsFormat.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.initStoredFieldsWriter(DefaultIndexingChain.java:81)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.startStoredFields(DefaultIndexingChain.java:258)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:295)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:231)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:449)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:835)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #4,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyxe_41/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyxe_41/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:79)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:963)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1008)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:854)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #2,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyw4_40/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyw4_40/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.<init>(CompressingStoredFieldsWriter.java:105)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsFormat.fieldsWriter(CompressingStoredFieldsFormat.java:128)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.lucene50.Lucene50StoredFieldsFormat.fieldsWriter(Lucene50StoredFieldsFormat.java:179)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.asserting.AssertingStoredFieldsFormat.fieldsWriter(AssertingStoredFieldsFormat.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.initStoredFieldsWriter(DefaultIndexingChain.java:81)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.startStoredFields(DefaultIndexingChain.java:258)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:295)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:231)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:449)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:835)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #5,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyz5_42/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyz5_42/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:79)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1678)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1658)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:851)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #7,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyww_43/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpyww_43/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.<init>(CompressingStoredFieldsWriter.java:105)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsFormat.fieldsWriter(CompressingStoredFieldsFormat.java:128)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.lucene50.Lucene50StoredFieldsFormat.fieldsWriter(Lucene50StoredFieldsFormat.java:179)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.asserting.AssertingStoredFieldsFormat.fieldsWriter(AssertingStoredFieldsFormat.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.initStoredFieldsWriter(DefaultIndexingChain.java:81)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.startStoredFields(DefaultIndexingChain.java:258)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:295)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:231)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:449)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:835)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #20,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzjj_45/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzjj_45/_0.fdt: 
>> Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.<init>(CompressingStoredFieldsWriter.java:105)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsFormat.fieldsWriter(CompressingStoredFieldsFormat.java:128)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.lucene50.Lucene50StoredFieldsFormat.fieldsWriter(Lucene50StoredFieldsFormat.java:179)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.asserting.AssertingStoredFieldsFormat.fieldsWriter(AssertingStoredFieldsFormat.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.initStoredFieldsWriter(DefaultIndexingChain.java:81)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.startStoredFields(DefaultIndexingChain.java:258)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:295)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:231)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:449)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:835)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #21,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzll_45: Too 
>> many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzll_45: Too 
>> many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newDirectoryStream(HandleTrackingFS.java:298)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newDirectoryStream(Files.java:545)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:171)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:191)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.listAll(MockDirectoryWrapper.java:1000)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DirectoryReader.indexExists(DirectoryReader.java:288)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:787)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:823)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #19,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzge_45: Too 
>> many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzge_45: Too 
>> many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newDirectoryStream(HandleTrackingFS.java:298)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newDirectoryStream(Files.java:545)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:171)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:191)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.listAll(MockDirectoryWrapper.java:1000)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DirectoryReader.indexExists(DirectoryReader.java:288)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:787)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:823)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #0,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpwp6_40/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpwp6_40/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:76)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1678)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1658)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:851)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #13,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz70_43: Too 
>> many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz70_43: Too 
>> many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newDirectoryStream(HandleTrackingFS.java:298)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newDirectoryStream(Files.java:545)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:171)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:191)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.listAll(MockDirectoryWrapper.java:1000)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DirectoryReader.indexExists(DirectoryReader.java:288)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:787)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:823)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #8,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz1o_43: Too 
>> many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz1o_43: Too 
>> many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newDirectoryStream(HandleTrackingFS.java:298)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newDirectoryStream(Files.java:545)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:171)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:191)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.listAll(MockDirectoryWrapper.java:1000)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DirectoryReader.indexExists(DirectoryReader.java:288)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:787)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:823)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #15,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz9t_45/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz9t_45/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:76)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:963)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1008)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:854)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #3,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpywn_41: Too 
>> many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpywn_41: Too 
>> many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newDirectoryStream(HandleTrackingFS.java:298)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newDirectoryStream(Files.java:545)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:171)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:191)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.listAll(MockDirectoryWrapper.java:1000)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DirectoryReader.indexExists(DirectoryReader.java:288)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:787)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:823)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #11,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz52_43/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz52_43/_0_Memory_0.mdvd:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:76)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1678)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1658)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:851)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #10,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz3l_43/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpz3l_43/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:79)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1678)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1658)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:851)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:15 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
>> Thread #18,5,TGRP-TestDemoParallelLeafReader]
>>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
>> java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzem_45/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> __randomizedtesting.SeedInfo.seed([78910BB799798171]:0)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:611)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:581)
>>    [junit4]   2> Caused by: java.nio.file.FileSystemException: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  
>> 78910BB799798171-001/tempDir-002/segs/6za9dzr2yvnqeaarom3jvpzem_45/_0_Memory_0.mdvm:
>>  Too many open files
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:49)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:84)
>>    [junit4]   2>        at 
>> org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:157)
>>    [junit4]   2>        at 
>> java.nio.file.Files.newOutputStream(Files.java:172)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:265)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:214)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]   2>        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesConsumer.<init>(MemoryDocValuesConsumer.java:79)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.memory.MemoryDocValuesFormat.fieldsConsumer(MemoryDocValuesFormat.java:60)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.getInstance(PerFieldDocValuesFormat.java:187)
>>    [junit4]   2>        at 
>> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addNumericField(PerFieldDocValuesFormat.java:111)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.NumericDocValuesWriter.flush(NumericDocValuesWriter.java:90)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.writeDocValues(DefaultIndexingChain.java:142)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:93)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:419)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3019)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2994)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:963)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1008)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:854)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]   2>        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2>
>>    [junit4]   2> jan 10, 2015 7:12:20 PM 
>> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>>  uncaughtException
>>    [junit4]   2> WARNING: Uncaught exception
>>
>> [...truncated too long message...]
>>
>> Wrapper.createOutput(MockDirectoryWrapper.java:607)
>>    [junit4]    >        at 
>> org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
>>    [junit4]    >        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsWriter.<init>(CompressingStoredFieldsWriter.java:105)
>>    [junit4]    >        at 
>> org.apache.lucene.codecs.compressing.CompressingStoredFieldsFormat.fieldsWriter(CompressingStoredFieldsFormat.java:128)
>>    [junit4]    >        at 
>> org.apache.lucene.codecs.lucene50.Lucene50StoredFieldsFormat.fieldsWriter(Lucene50StoredFieldsFormat.java:179)
>>    [junit4]    >        at 
>> org.apache.lucene.codecs.asserting.AssertingStoredFieldsFormat.fieldsWriter(AssertingStoredFieldsFormat.java:49)
>>    [junit4]    >        at 
>> org.apache.lucene.index.DefaultIndexingChain.initStoredFieldsWriter(DefaultIndexingChain.java:81)
>>    [junit4]    >        at 
>> org.apache.lucene.index.DefaultIndexingChain.startStoredFields(DefaultIndexingChain.java:258)
>>    [junit4]    >        at 
>> org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:295)
>>    [junit4]    >        at 
>> org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:231)
>>    [junit4]    >        at 
>> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:449)
>>    [junit4]    >        at 
>> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1415)
>>    [junit4]    >        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1150)
>>    [junit4]    >        at 
>> org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1135)
>>    [junit4]    >        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$3.reindex(TestDemoParallelLeafReader.java:835)
>>    [junit4]    >        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getParallelLeafReader(TestDemoParallelLeafReader.java:397)
>>    [junit4]    >        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader.getCurrentReader(TestDemoParallelLeafReader.java:161)
>>    [junit4]    >        at 
>> org.apache.lucene.index.TestDemoParallelLeafReader$ReindexingReader$ReindexingMergePolicy$ReindexingOneMerge.getMergeReaders(TestDemoParallelLeafReader.java:535)
>>    [junit4]    >        at 
>> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3958)
>>    [junit4]    >        at 
>> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3559)
>>    [junit4]    >        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:519)
>>    [junit4]    >        at 
>> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:557)
>>    [junit4]   2> NOTE: leaving temporary files on disk at: 
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build/core/test/J3/temp/lucene.index.TestDemoParallelLeafReader
>>  78910BB799798171-001
>>    [junit4]   2> NOTE: test params are: codec=Asserting(Lucene50): 
>> {id=PostingsFormat(name=LuceneVarGapFixedInterval), 
>> text=TestBloomFilteredLucenePostings(BloomFilteringPostingsFormat(Lucene50(blocksize=128))),
>>  
>> number=TestBloomFilteredLucenePostings(BloomFilteringPostingsFormat(Lucene50(blocksize=128)))},
>>  docValues:{number_1=DocValuesFormat(name=Lucene50), 
>> number_4=DocValuesFormat(name=Asserting), 
>> number_53=DocValuesFormat(name=Asserting), 
>> number_84=DocValuesFormat(name=Lucene50), 
>> number_78=DocValuesFormat(name=Lucene50), 
>> number_83=DocValuesFormat(name=Memory), 
>> number_71=DocValuesFormat(name=Asserting), 
>> number_0=DocValuesFormat(name=Asserting), 
>> number_87=DocValuesFormat(name=Memory), 
>> number_30=DocValuesFormat(name=Lucene50), 
>> number_67=DocValuesFormat(name=Lucene50), 
>> number_57=DocValuesFormat(name=Asserting), 
>> number_20=DocValuesFormat(name=Asserting), 
>> number_69=DocValuesFormat(name=Memory), 
>> number_59=DocValuesFormat(name=Lucene50), 
>> number_73=DocValuesFormat(name=Lucene50), 
>> number_77=DocValuesFormat(name=Lucene50), 
>> number_175=DocValuesFormat(name=Memory), 
>> number_130=DocValuesFormat(name=Lucene50), 
>> number_49=DocValuesFormat(name=Lucene50), 
>> number_88=DocValuesFormat(name=Lucene50), 
>> number_70=DocValuesFormat(name=Lucene50), 
>> number_82=DocValuesFormat(name=Asserting), 
>> number_86=DocValuesFormat(name=Asserting), 
>> number_3=DocValuesFormat(name=Memory), 
>> number_92=DocValuesFormat(name=Lucene50), 
>> number_74=DocValuesFormat(name=Lucene50), 
>> number_198=DocValuesFormat(name=Asserting), 
>> number_160=DocValuesFormat(name=Memory), 
>> number_68=DocValuesFormat(name=Asserting), 
>> number_75=DocValuesFormat(name=Asserting), 
>> number_7=DocValuesFormat(name=Memory), 
>> number_76=DocValuesFormat(name=Memory), 
>> number_79=DocValuesFormat(name=Asserting), 
>> number_2=DocValuesFormat(name=Lucene50), 
>> number_72=DocValuesFormat(name=Memory), 
>> number_22=DocValuesFormat(name=Lucene50), 
>> number_99=DocValuesFormat(name=Lucene50), 
>> number_90=DocValuesFormat(name=Memory), 
>> number_66=DocValuesFormat(name=Lucene50), 
>> number_80=DocValuesFormat(name=Lucene50), 
>> number_91=DocValuesFormat(name=Lucene50), 
>> number=DocValuesFormat(name=Memory), 
>> number_81=DocValuesFormat(name=Lucene50), 
>> number_42=DocValuesFormat(name=Asserting)}, sim=DefaultSimilarity, 
>> locale=sk, timezone=Asia/Ashgabat
>>    [junit4]   2> NOTE: FreeBSD 9.1-RELEASE-p3 amd64/Oracle Corporation 
>> 1.7.0_65 (64-bit)/cpus=16,threads=1,free=138795984,total=459276288
>>    [junit4]   2> NOTE: All tests run in this JVM: 
>> [TestTotalHitCountCollector, TestPhraseQuery, TestDirectoryReaderReopen, 
>> TestSimpleAttributeImpl, TestBasics, TestRegExp, TestSnapshotDeletionPolicy, 
>> TestBoolean2, Nested1, TestRoaringDocIdSet, Test2BSortedDocValues, 
>> TestPositiveScoresOnlyCollector, TestUnicodeUtil, 
>> TestPerFieldPostingsFormat2, TestWildcard, TestLucene50NormsFormat, 
>> TestBitDocIdSetBuilder, TestDocsAndPositions, Nested1, TestBagOfPostings, 
>> TestPayloadNearQuery, TestFilteredQuery, TestExternalCodecs, 
>> TestIndexWriterConfig, TestFieldCacheTermsFilter, TestWorstCaseTestBehavior, 
>> TestFlex, TestPersistentSnapshotDeletionPolicy, TestCachingWrapperFilter, 
>> Test2BTerms, TestMultiTermQueryRewrites, TestSpanExplanationsOfNonMatches, 
>> TestBinaryTerms, TestSpanSearchEquivalence, TestBufferedIndexInput, 
>> TestMultiLevelSkipList, TestSimilarityBase, 
>> TestDocInverterPerFieldErrorInfo, TestAssertingDocValuesFormat, 
>> TestStringHelper, TestBinaryDocument, TestDeterminizeLexicon, 
>> TestIndexWriterWithThreads, TestSpansAdvanced, TestWindowsMMap, TestSearch, 
>> Nested1, TestNeverDelete, TestDocIdSetBuilder, TestNoDeletionPolicy, 
>> TestIndexWriterOnJRECrash, TestIndexWriterReader, 
>> TestCompressingTermVectorsFormat, TestIndexWriterMerging, TestFSTs, 
>> TestPackedInts, TestMultiMMap, TestFlushByRamOrCountsPolicy, 
>> TestSloppyPhraseQuery, TestIndexWriterDelete, TestNorms, 
>> TestSearchWithThreads, TestSearchAfter, TestConcurrentMergeScheduler, 
>> TestHighCompressionMode, TestDocumentsWriterStallControl, TestTopDocsMerge, 
>> TestStressIndexing, TestMinimize, TestRollingUpdates, 
>> TestNRTReaderWithThreads, TestPerFieldPostingsFormat, 
>> TestConsistentFieldNumbers, TestSimpleExplanations, 
>> TestDocTermOrdsRangeFilter, TestCompressingStoredFieldsFormat, 
>> TestSegmentMerger, TestBagOfPositions, TestFixedBitSet, 
>> TestNRTCachingDirectory, TestIndexWriterNRTIsCurrent, TestPostingsOffsets, 
>> TestMixedCodecs, TestTransactionRollback, TestUTF32ToUTF8, 
>> TestSpanExplanations, TestStressIndexing2, TestMultiPhraseQuery, 
>> TestLazyProxSkipping, TestDeterminism, TestCodecs, 
>> TestCharTermAttributeImpl, TestOmitPositions, TestPayloadExplanations, 
>> TestParallelLeafReader, TestBytesRefHash, TestThreadedForceMerge, 
>> TestIndexInput, TestSloppyPhraseQuery2, TestDisjunctionMaxQuery, 
>> TestForceMergeForever, TestSameScoresWithThreads, TestQueryWrapperFilter, 
>> TestMultiFields, TestSimpleExplanationsOfNonMatches, TestTermVectorsReader, 
>> TestSpansAdvanced2, TestIntBlockPool, TestPrefixInBooleanQuery, 
>> TestTopDocsCollector, TestSegmentTermEnum, TestUniqueTermCount, 
>> TestBooleanQuery, TestSortRandom, TestPrefixCodedTerms, 
>> TestAllFilesHaveCodecHeader, TestDocument, TestTermScorer, 
>> TestTopFieldCollector, TestSumDocFreq, TestIndexableField, 
>> TestIndexFileDeleter, TestMatchAllDocsQuery, TestParallelTermEnum, 
>> TestSubScorerFreqs, Nested, Nested, TestDateSort, TestVirtualMethod, 
>> TestDateTools, TestAutomatonQueryUnicode, TestMockDirectoryWrapper, 
>> TestNoMergePolicy, TestNamedSPILoader, TestBytesRef, TestNot, TestVersion, 
>> TestScoreCachingWrappingScorer, TestTermdocPerf, TestIndexCommit, 
>> TestNewestSegment, Test2BBinaryDocValues, TestReusableStringReader, 
>> TestBlockPostingsFormat, TestForUtil, TestLucene50CompoundFormat, 
>> TestFieldType, TestAllFilesHaveChecksumFooter, TestCodecUtil, 
>> TestDemoParallelLeafReader]
>>    [junit4] Completed on J3 in 610.62s, 5 tests, 1 error <<< FAILURES!
>>
>> [...truncated 15 lines...]
>> BUILD FAILED
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/build.xml:536:
>>  The following error occurred while executing this line:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/build.xml:477:
>>  The following error occurred while executing this line:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/build.xml:61:
>>  The following error occurred while executing this line:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/extra-targets.xml:39:
>>  The following error occurred while executing this line:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/build.xml:49:
>>  The following error occurred while executing this line:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/common-build.xml:1363:
>>  The following error occurred while executing this line:
>> /usr/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-5.x/lucene/common-build.xml:970:
>>  There were test failures: 409 suites, 3237 tests, 1 error, 37 ignored (27 
>> assumptions)
>>
>> Total time: 39 minutes 43 seconds
>> Build step 'Invoke Ant' marked build as failure
>> Archiving artifacts
>> Sending artifact delta relative to Lucene-Solr-NightlyTests-5.x #716
>> Archived 5 artifacts
>> Archive block size is 32768
>> Received 0 blocks and 3856023 bytes
>> Compression is 0.0%
>> Took 1.5 sec
>> Recording test results
>> Email was triggered for: Failure
>> Sending email for trigger: Failure
>>
>>
>>
>>
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