[JENKINS] Lucene-Solr-NightlyTests-8.x - Build # 112 - Failure

[Apache Jenkins Server]

Build: https://builds.apache.org/job/Lucene-Solr-NightlyTests-8.x/112/

2 tests failed.
FAILED:  org.apache.lucene.index.TestIndexWriterReader.testDuringAddDelete

Error Message:
this IndexWriter is closed

Stack Trace:
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
        at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
        at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
        at 
org.apache.lucene.index.IndexWriter.nrtIsCurrent(IndexWriter.java:4945)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:293)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:272)
        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:262)
        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:165)
        at 
org.apache.lucene.index.TestIndexWriterReader.testDuringAddDelete(TestIndexWriterReader.java:861)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:938)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:974)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:988)
        at 
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:947)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:832)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:883)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:894)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
        at 
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
        at 
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
        at java.nio.file.Files.newOutputStream(Files.java:216)
        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
        at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
        at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)


FAILED:  
org.apache.lucene.index.TestIndexWriterReader.testReopenNRTReaderOnCommit

Error Message:
Captured an uncaught exception in thread: Thread[id=13566, name=Lucene Merge 
Thread #1984, state=RUNNABLE, group=TGRP-TestIndexWriterReader]

Stack Trace:
com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught 
exception in thread: Thread[id=13566, name=Lucene Merge Thread #1984, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C:8939C659620C0E35]:0)
Caused by: org.apache.lucene.index.MergePolicy$MergeException: 
java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
        at __randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
        at java.nio.file.Files.newOutputStream(Files.java:216)
        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
        at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
        at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)




Build Log:
[...truncated 990 lines...]
   [junit4] Suite: org.apache.lucene.index.TestIndexWriterReader
   [junit4]   1> TEST: now get reader
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: 
Thread[Thread-11553,5,TGRP-TestIndexWriterReader]
   [junit4]   2> java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: 
Thread[Thread-11557,5,TGRP-TestIndexWriterReader]
   [junit4]   2> java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
Thread #1985,5,TGRP-TestIndexWriterReader]
   [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39w_MockRandom_0.tfp:
 Too many open files
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39w_MockRandom_0.tfp:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.memory.FSTTermsWriter.<init>(FSTTermsWriter.java:140)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:130)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: 
Thread[Thread-11554,5,TGRP-TestIndexWriterReader]
   [junit4]   2> java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: 
Thread[Thread-11556,5,TGRP-TestIndexWriterReader]
   [junit4]   2> java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: 
Thread[Thread-11555,5,TGRP-TestIndexWriterReader]
   [junit4]   2> java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]   2>        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
Thread #1986,5,TGRP-TestIndexWriterReader]
   [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
java.lang.IllegalStateException: this writer hit an unrecoverable error; cannot 
merge
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
   [junit4]   2> Caused by: java.lang.IllegalStateException: this writer hit an 
unrecoverable error; cannot merge
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter._mergeInit(IndexWriter.java:4218)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeInit(IndexWriter.java:4198)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4050)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        ... 2 more
   [junit4]   2> 
   [junit4]   2> Meith 06, 2019 2:45:14 A.M. 
com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
 uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
Thread #1984,5,TGRP-TestIndexWriterReader]
   [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
   [junit4]   2> Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]   2>        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]   2>        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]   2>        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]   2>        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]   2>        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]   2>        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]   2>        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]   2>        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]   2>        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]   2>        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]   2>        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]   2>        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> 
   [junit4]   2> NOTE: download the large Jenkins line-docs file by running 
'ant get-jenkins-line-docs' in the lucene directory.
   [junit4]   2> NOTE: reproduce with: ant test  
-Dtestcase=TestIndexWriterReader -Dtests.method=testDuringAddDelete 
-Dtests.seed=DD23603F6B6E011C -Dtests.multiplier=2 -Dtests.nightly=true 
-Dtests.slow=true 
-Dtests.linedocsfile=/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/test-data/enwiki.random.lines.txt
 -Dtests.locale=ga -Dtests.timezone=NST -Dtests.asserts=true 
-Dtests.file.encoding=ISO-8859-1
   [junit4] ERROR   85.8s J2 | TestIndexWriterReader.testDuringAddDelete <<<
   [junit4]    > Throwable #1: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.nrtIsCurrent(IndexWriter.java:4945)
   [junit4]    >        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:293)
   [junit4]    >        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:272)
   [junit4]    >        at 
org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:262)
   [junit4]    >        at 
org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:165)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader.testDuringAddDelete(TestIndexWriterReader.java:861)
   [junit4]    >        at java.lang.Thread.run(Thread.java:748)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)Throwable
 #2: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
uncaught exception in thread: Thread[id=11614, name=Thread-11553, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)Throwable
 #3: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
uncaught exception in thread: Thread[id=13567, name=Lucene Merge Thread #1985, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: org.apache.lucene.index.MergePolicy$MergeException: 
java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39w_MockRandom_0.tfp:
 Too many open files
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39w_MockRandom_0.tfp:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.memory.FSTTermsWriter.<init>(FSTTermsWriter.java:140)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:130)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)Throwable
 #4: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
uncaught exception in thread: Thread[id=13568, name=Lucene Merge Thread #1986, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: org.apache.lucene.index.MergePolicy$MergeException: 
java.lang.IllegalStateException: this writer hit an unrecoverable error; cannot 
merge
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
   [junit4]    > Caused by: java.lang.IllegalStateException: this writer hit an 
unrecoverable error; cannot merge
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter._mergeInit(IndexWriter.java:4218)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeInit(IndexWriter.java:4198)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4050)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        ... 2 moreThrowable #5: 
com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught 
exception in thread: Thread[id=11618, name=Thread-11557, state=RUNNABLE, 
group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)Throwable
 #6: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
uncaught exception in thread: Thread[id=11616, name=Thread-11555, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)Throwable
 #7: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
uncaught exception in thread: Thread[id=11617, name=Thread-11556, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)Throwable
 #8: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
uncaught exception in thread: Thread[id=11615, name=Thread-11554, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    > Caused by: java.lang.RuntimeException: 
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:849)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: 
this IndexWriter is closed
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:681)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:695)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1591)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1213)
   [junit4]    >        at 
org.apache.lucene.index.TestIndexWriterReader$2.run(TestIndexWriterReader.java:839)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> NOTE: download the large Jenkins line-docs file by running 
'ant get-jenkins-line-docs' in the lucene directory.
   [junit4]   2> NOTE: reproduce with: ant test  
-Dtestcase=TestIndexWriterReader -Dtests.method=testReopenNRTReaderOnCommit 
-Dtests.seed=DD23603F6B6E011C -Dtests.multiplier=2 -Dtests.nightly=true 
-Dtests.slow=true 
-Dtests.linedocsfile=/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/test-data/enwiki.random.lines.txt
 -Dtests.locale=ga -Dtests.timezone=NST -Dtests.asserts=true 
-Dtests.file.encoding=ISO-8859-1
   [junit4] ERROR   0.01s J2 | 
TestIndexWriterReader.testReopenNRTReaderOnCommit <<<
   [junit4]    > Throwable #1: 
com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught 
exception in thread: Thread[id=13566, name=Lucene Merge Thread #1984, 
state=RUNNABLE, group=TGRP-TestIndexWriterReader]
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C:8939C659620C0E35]:0)
   [junit4]    > Caused by: org.apache.lucene.index.MergePolicy$MergeException: 
java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
__randomizedtesting.SeedInfo.seed([DD23603F6B6E011C]:0)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
   [junit4]    > Caused by: java.nio.file.FileSystemException: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001/index-NIOFSDirectory-001/_39v_MockRandom_0.pos:
 Too many open files
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleLimitFS.onOpen(HandleLimitFS.java:48)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.callOpenHook(HandleTrackingFS.java:81)
   [junit4]    >        at 
org.apache.lucene.mockfile.HandleTrackingFS.newOutputStream(HandleTrackingFS.java:160)
   [junit4]    >        at 
org.apache.lucene.mockfile.FilterFileSystemProvider.newOutputStream(FilterFileSystemProvider.java:197)
   [junit4]    >        at java.nio.file.Files.newOutputStream(Files.java:216)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:411)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory$FSIndexOutput.<init>(FSDirectory.java:407)
   [junit4]    >        at 
org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:255)
   [junit4]    >        at 
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:667)
   [junit4]    >        at 
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$1.createOutput(ConcurrentMergeScheduler.java:288)
   [junit4]    >        at 
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
   [junit4]    >        at 
org.apache.lucene.codecs.lucene50.Lucene50PostingsWriter.<init>(Lucene50PostingsWriter.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.mockrandom.MockRandomPostingsFormat.fieldsConsumer(MockRandomPostingsFormat.java:122)
   [junit4]    >        at 
org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.merge(PerFieldPostingsFormat.java:167)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:245)
   [junit4]    >        at 
org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:140)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4462)
   [junit4]    >        at 
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4056)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
   [junit4]    >        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
   [junit4]   2> NOTE: leaving temporary files on disk at: 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/build/core/test/J2/temp/lucene.index.TestIndexWriterReader_DD23603F6B6E011C-001
   [junit4]   2> NOTE: test params are: codec=Asserting(Lucene80): 
{field1=FSTOrd50, indexname=PostingsFormat(name=MockRandom), 
field=BlockTreeOrds(blocksize=128), foo=BlockTreeOrds(blocksize=128), 
id=FSTOrd50, field3=PostingsFormat(name=MockRandom), 
field2=BlockTreeOrds(blocksize=128), field5=FSTOrd50, 
field4=PostingsFormat(name=Direct)}, docValues:{}, maxPointsInLeafNode=1682, 
maxMBSortInHeap=5.572215397365936, 
sim=Asserting(org.apache.lucene.search.similarities.AssertingSimilarity@18393198),
 locale=ga, timezone=NST
   [junit4]   2> NOTE: Linux 4.4.0-137-generic amd64/Oracle Corporation 
1.8.0_191 (64-bit)/cpus=4,threads=1,free=227794704,total=495976448
   [junit4]   2> NOTE: All tests run in this JVM: [TestBooleanQuery, 
TestFrozenBufferedUpdates, TestNearSpansOrdered, TestAtomicUpdate, 
TestConcurrentMergeScheduler, TestIntRangeFieldQueries, 
TestSearchForDuplicates, TestSegmentInfos, TestBinaryDocValuesUpdates, 
TestBasicModelG, TestNRTCachingDirectory, TestSpanContainQuery, 
TestPhraseQuery, TestRegexpQuery, TestIndexReaderClose, 
TestLucene80DocValuesFormat, TestMultiset, TestSearchWithThreads, 
TestTermVectorsReader, TestIndexWriterReader]
   [junit4] Completed [188/522 (1!)] on J2 in 111.84s, 23 tests, 2 errors <<< 
FAILURES!

[...truncated 11548 lines...]
    [javac] Compiling 1277 source files to 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/solr/build/solr-core/classes/java
    [javac] 
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/solr/core/src/java/org/apache/solr/util/tracing/HttpServletCarrier.java:35:
 error: cannot infer type arguments for Iterator<E>
    [javac]     this.it = new Iterator<>() {
    [javac]                           ^
    [javac]   reason: cannot use '<>' with anonymous inner classes
    [javac]   where E is a type-variable:
    [javac]     E extends Object declared in interface Iterator
    [javac] Note: Some input files use or override a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error

BUILD FAILED
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/build.xml:652:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/build.xml:578:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/build.xml:59:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/solr/build.xml:231:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/solr/common-build.xml:558:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/solr/common-build.xml:506:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/solr/common-build.xml:401:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/common-build.xml:558:
 The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.x/checkout/lucene/common-build.xml:2056:
 Compile failed; see the compiler error output for details.

Total time: 194 minutes 47 seconds
Build step 'Invoke Ant' marked build as failure
Archiving artifacts
Recording test results
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any

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