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Posted to builds@lucene.apache.org by Apache Jenkins Server <je...@builds.apache.org> on 2020/07/31 20:29:04 UTC

[JENKINS] Lucene-Solr-NightlyTests-8.6 - Build # 31 - Still Unstable

Build: https://builds.apache.org/job/Lucene-Solr-NightlyTests-8.6/31/

3 tests failed.
FAILED:  org.apache.lucene.index.TestIndexWriterDelete.testDeleteAllNoDeadLock

Error Message:
refusing to delete any files: this IndexWriter hit an unrecoverable exception

Stack Trace:
org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
	at org.apache.lucene.index.IndexWriter.deleteAll(IndexWriter.java:2452)
	at org.apache.lucene.index.RandomIndexWriter.deleteAll(RandomIndexWriter.java:373)
	at org.apache.lucene.index.TestIndexWriterDelete.testDeleteAllNoDeadLock(TestIndexWriterDelete.java:348)
	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: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
	... 10 more


FAILED:  org.apache.lucene.index.TestIndexWriterDelete.testMergingAfterDeleteAll

Error Message:
Captured an uncaught exception in thread: Thread[id=26647, name=Lucene Merge Thread #4, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]

Stack Trace:
com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26647, name=Lucene Merge Thread #4, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
Caused by: org.apache.lucene.index.MergePolicy$MergeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
	at org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:703)
	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:694)
Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
	at org.apache.lucene.index.DocumentsWriterFlushQueue.forcePurge(DocumentsWriterFlushQueue.java:140)
	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:189)
	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
	at org.apache.lucene.index.IndexWriter.rollbackInternalNoCommit(IndexWriter.java:2299)
	at org.apache.lucene.index.IndexWriter.rollbackInternal(IndexWriter.java:2267)
	at org.apache.lucene.index.IndexWriter.maybeCloseOnTragicEvent(IndexWriter.java:5035)
	at org.apache.lucene.index.IndexWriter.tragicEvent(IndexWriter.java:5025)
	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4220)
	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
	... 3 more
Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
	... 10 more


FAILED:  org.apache.solr.cloud.cdcr.CdcrReplicationHandlerTest.testReplicationWithBufferedUpdates

Error Message:
Timeout while trying to assert number of documents @ source_collection

Stack Trace:
java.lang.AssertionError: Timeout while trying to assert number of documents @ source_collection
	at __randomizedtesting.SeedInfo.seed([A6DEFBDB24C304FD:75D7ABC56150986A]:0)
	at org.apache.solr.cloud.cdcr.BaseCdcrDistributedZkTest.assertNumDocs(BaseCdcrDistributedZkTest.java:278)
	at org.apache.solr.cloud.cdcr.CdcrReplicationHandlerTest.testReplicationWithBufferedUpdates(CdcrReplicationHandlerTest.java:233)
	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$10.evaluate(RandomizedRunner.java:988)
	at org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:1090)
	at org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:1061)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
	at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
	at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java: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 com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
	at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.AssertionError: expected:<520> but was:<530>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:834)
	at org.junit.Assert.assertEquals(Assert.java:645)
	at org.junit.Assert.assertEquals(Assert.java:631)
	at org.apache.solr.cloud.cdcr.BaseCdcrDistributedZkTest.assertNumDocs(BaseCdcrDistributedZkTest.java:269)
	... 42 more




Build Log:
[...truncated 1584 lines...]
   [junit4] Suite: org.apache.lucene.index.TestIndexWriterDelete
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25720,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25722,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25719,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25726,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriterFlushQueue.tryPurge(DocumentsWriterFlushQueue.java:150)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:191)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.access$200(IndexWriter.java:217)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$1.afterSegmentsFlushed(IndexWriter.java:444)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:525)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:394)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:440)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1333)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocuments(IndexWriter.java:1306)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:163)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25725,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriterFlushQueue.tryPurge(DocumentsWriterFlushQueue.java:150)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:191)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.access$200(IndexWriter.java:217)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$1.afterSegmentsFlushed(IndexWriter.java:444)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:525)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.flushOneDWPT(DocumentsWriter.java:250)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.flushNextBuffer(IndexWriter.java:3164)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.flushAllBuffersSequentially(RandomIndexWriter.java:232)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.maybeFlushOrCommit(RandomIndexWriter.java:205)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:196)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25723,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [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=TestIndexWriterDelete -Dtests.method=testDeleteAllNoDeadLock -Dtests.seed=1EAB0F3F4C06B079 -Dtests.multiplier=2 -Dtests.nightly=true -Dtests.slow=true -Dtests.linedocsfile=/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.6/test-data/enwiki.random.lines.txt -Dtests.locale=en-AU -Dtests.timezone=America/Santa_Isabel -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
   [junit4] ERROR   0.56s J1 | TestIndexWriterDelete.testDeleteAllNoDeadLock <<<
   [junit4]    > Throwable #1: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.deleteAll(IndexWriter.java:2452)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.deleteAll(RandomIndexWriter.java:373)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete.testDeleteAllNoDeadLock(TestIndexWriterDelete.java:348)
   [junit4]    > 	at java.lang.Thread.run(Thread.java:748)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #2: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26636, name=Thread-25720, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #3: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26635, name=Thread-25719, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #4: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26638, name=Thread-25722, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #5: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26639, name=Thread-25723, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:739)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:753)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1330)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #6: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26642, name=Thread-25726, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriterFlushQueue.tryPurge(DocumentsWriterFlushQueue.java:150)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:191)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.access$200(IndexWriter.java:217)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$1.afterSegmentsFlushed(IndexWriter.java:444)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:525)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:394)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:440)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1333)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocuments(IndexWriter.java:1306)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:163)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #7: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26641, name=Thread-25725, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriterFlushQueue.tryPurge(DocumentsWriterFlushQueue.java:150)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:191)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.access$200(IndexWriter.java:217)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$1.afterSegmentsFlushed(IndexWriter.java:444)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:525)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.flushOneDWPT(DocumentsWriter.java:250)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.flushNextBuffer(IndexWriter.java:3164)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.flushAllBuffersSequentially(RandomIndexWriter.java:232)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.maybeFlushOrCommit(RandomIndexWriter.java:205)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:196)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 more
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge Thread #4,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:703)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:694)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]   2> 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriterFlushQueue.forcePurge(DocumentsWriterFlushQueue.java:140)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:189)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.rollbackInternalNoCommit(IndexWriter.java:2299)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.rollbackInternal(IndexWriter.java:2267)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.maybeCloseOnTragicEvent(IndexWriter.java:5035)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.tragicEvent(IndexWriter.java:5025)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4220)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]   2> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]   2> Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]   2> 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]   2> 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]   2> 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]   2> 	... 3 more
   [junit4]   2> Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]   2> 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]   2> 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]   2> 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]   2> 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]   2> 	... 10 more
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25721,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.ensureOpen(DocumentsWriter.java:202)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:416)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1333)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> 
   [junit4]   2> Jul 31, 2020 9:33:51 AM com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler uncaughtException
   [junit4]   2> WARNING: Uncaught exception in thread: Thread[Thread-25724,5,TGRP-TestIndexWriterDelete]
   [junit4]   2> java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]   2> 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]   2> Caused by: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.ensureOpen(DocumentsWriter.java:202)
   [junit4]   2> 	at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:416)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1333)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]   2> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]   2> 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]   2> 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> 
   [junit4]   2> NOTE: download the large Jenkins line-docs file by running 'ant get-jenkins-line-docs' in the lucene directory.
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=TestIndexWriterDelete -Dtests.method=testMergingAfterDeleteAll -Dtests.seed=1EAB0F3F4C06B079 -Dtests.multiplier=2 -Dtests.nightly=true -Dtests.slow=true -Dtests.linedocsfile=/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.6/test-data/enwiki.random.lines.txt -Dtests.locale=en-AU -Dtests.timezone=America/Santa_Isabel -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
   [junit4] ERROR   0.43s J1 | TestIndexWriterDelete.testMergingAfterDeleteAll <<<
   [junit4]    > Throwable #1: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26647, name=Lucene Merge Thread #4, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: org.apache.lucene.index.MergePolicy$MergeException: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:703)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:694)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:349)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.deleteFiles(IndexFileDeleter.java:669)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:589)
   [junit4]    > 	at org.apache.lucene.index.IndexFileDeleter.checkpoint(IndexFileDeleter.java:531)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.checkpoint(IndexWriter.java:2564)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.publishFlushedSegment(IndexWriter.java:2642)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$publishFlushedSegments$15(IndexWriter.java:5211)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriterFlushQueue.innerPurge(DocumentsWriterFlushQueue.java:119)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriterFlushQueue.forcePurge(DocumentsWriterFlushQueue.java:140)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.purgeFlushTickets(DocumentsWriter.java:189)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.publishFlushedSegments(IndexWriter.java:5191)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.rollbackInternalNoCommit(IndexWriter.java:2299)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.rollbackInternal(IndexWriter.java:2267)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.maybeCloseOnTragicEvent(IndexWriter.java:5035)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.tragicEvent(IndexWriter.java:5025)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4220)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter$IndexWriterMergeSource.merge(IndexWriter.java:5741)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:624)
   [junit4]    > 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:682)
   [junit4]    > Caused by: org.apache.lucene.index.CorruptIndexException: Problem reading index from MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78) (resource=MockDirectoryWrapper(RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78))
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:142)
   [junit4]    > 	at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:83)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdates.java:171)
   [junit4]    > 	at org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(ReadersAndUpdates.java:714)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.lambda$mergeMiddle$12(IndexWriter.java:4533)
   [junit4]    > 	at org.apache.lucene.index.MergePolicy$OneMerge.initMergeReaders(MergePolicy.java:439)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4530)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4190)
   [junit4]    > 	... 3 more
   [junit4]    > Caused by: java.io.FileNotFoundException: _2u.fnm in dir=RAMDirectory@42195a4b lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@4cdeac78
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openInput(MockDirectoryWrapper.java:753)
   [junit4]    > 	at org.apache.lucene.store.Directory.openChecksumInput(Directory.java:157)
   [junit4]    > 	at org.apache.lucene.store.MockDirectoryWrapper.openChecksumInput(MockDirectoryWrapper.java:1075)
   [junit4]    > 	at org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat.read(Lucene60FieldInfosFormat.java:113)
   [junit4]    > 	at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:109)
   [junit4]    > 	... 10 moreThrowable #2: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26640, name=Thread-25724, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.ensureOpen(DocumentsWriter.java:202)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:416)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1333)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)Throwable #3: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=26637, name=Thread-25721, state=RUNNABLE, group=TGRP-TestIndexWriterDelete]
   [junit4]    > Caused by: java.lang.RuntimeException: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([1EAB0F3F4C06B079]:0)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:332)
   [junit4]    > Caused by: org.apache.lucene.store.AlreadyClosedException: this DocumentsWriter is closed
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.ensureOpen(DocumentsWriter.java:202)
   [junit4]    > 	at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:416)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1333)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1619)
   [junit4]    > 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1262)
   [junit4]    > 	at org.apache.lucene.index.RandomIndexWriter.addDocument(RandomIndexWriter.java:193)
   [junit4]    > 	at org.apache.lucene.index.TestIndexWriterDelete$1.run(TestIndexWriterDelete.java:326)
   [junit4]   2> NOTE: leaving temporary files on disk at: /home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.6/checkout/lucene/build/core/test/J1/temp/lucene.index.TestIndexWriterDelete_1EAB0F3F4C06B079-001
   [junit4]   2> NOTE: test params are: codec=Asserting(Lucene86): {field=TestBloomFilteredLucenePostings(BloomFilteringPostingsFormat(Lucene84)), city=Lucene84, contents=PostingsFormat(name=LuceneVarGapFixedInterval), id=Lucene84, body=TestBloomFilteredLucenePostings(BloomFilteringPostingsFormat(Lucene84)), value=PostingsFormat(name=Direct), content=PostingsFormat(name=Direct)}, docValues:{dv=DocValuesFormat(name=Lucene80)}, maxPointsInLeafNode=672, maxMBSortInHeap=6.010802236844892, sim=Asserting(RandomSimilarity(queryNorm=false): {field=DFR I(F)L1, contents=DFR I(n)B2, city=DFR I(F)B3(800.0), id=IB SPL-DZ(0.3), body=F2LOG, content=DFR I(ne)BZ(0.3)}), locale=en-AU, timezone=America/Santa_Isabel
   [junit4]   2> NOTE: Linux 4.15.0-108-generic amd64/Oracle Corporation 1.8.0_252 (64-bit)/cpus=4,threads=1,free=385668280,total=476053504
   [junit4]   2> NOTE: All tests run in this JVM: [TestMergePolicy, TestDocIDMerger, TestDemo, TestLatLonPointDistanceFeatureQuery, TestLatLonDocValuesField, Test2BPoints, TestNIOFSDirectory, TestBoolean2, TestFilterLeafReader, TestPackedTokenAttributeImpl, TestNewestSegment, TestBasicModelIn, TestSearch, TestDocIdSetBuilder, TestIndexOrDocValuesQuery, TestTragicIndexWriterDeadlock, TestTerms, TestLongDistanceFeatureQuery, TestMathUtil, TestSimilarityBase, TestLucene50LiveDocsFormat, TestVersion, TestOmitNorms, TestBagOfPositions, TestRangeFieldsDocValuesQuery, TestCrashCausesCorruptIndex, TestGeoEncodingUtils, TestFutureArrays, TestSPIClassIterator, TestSpansEnum, TestSloppyPhraseQuery2, TestFieldsReader, TestFilterWeight, TestSameScoresWithThreads, TestSpanExplanationsOfNonMatches, TestInfoStream, TestMultiset, TestCachingCollector, TestAxiomaticF3EXP, TestClassicSimilarity, TestFieldType, TestParallelLeafReader, TestByteBuffersDirectory, TestReadOnlyIndex, TestLucene80NormsFormatMergeInstance, TestMultiLevelSkipList, TestAutomatonQueryUnicode, TestCheckIndex, TestReaderWrapperDVTypeCheck, TestTotalHits, TestPerFieldPostingsFormat2, TestDoubleRangeFieldQueries, TestPendingSoftDeletes, TestTermQuery, TestTryDelete, TestMaxScoreAccumulator, TestTermsHashPerField, TestSearchAfter, TestIndexWriterLockRelease, TestXYPoint, TestSimpleExplanationsWithFillerDocs, TestFeatureField, TestIntroSorter, TermInSetQueryTest, TestNRTReaderWithThreads, TestManyFields, TestBinaryTerms, TestLucene84PostingsFormat, TestXYShapeEncoding, TestGraphTokenFilter, TestSegmentCacheables, TestCachingTokenFilter, TestWildcard, TestConcurrentMergeScheduler, TestRecyclingIntBlockAllocator, TestPointValues, TestMultiCollector, TestLRUQueryCache, TestByteArrayDataInput, Test2BTerms, TestBM25Similarity, TestMatchAllDocsQuery, TestFastLZ4, TestFSTs, TestLockFactory, TestElevationComparator, TestDateSort, TestTessellator, TestTopFieldCollector, TestStandardAnalyzer, TestXYPointShapeQueries, TestDocValuesFieldUpdates, TestCodecUtil, TestBKDRadixSort, TestCharArraySet, TestCharFilter, TestCharacterUtils, TestReusableStringReader, TestStopFilter, TestToken, TestFastCompressionMode, TestFastDecompressionMode, TestHighCompressionMode, TestLucene50StoredFieldsFormatHighCompression, TestLucene50StoredFieldsFormatMergeInstance, TestLucene50TermVectorsFormat, TestLucene60FieldInfoFormat, TestIndexedDISI, TestLucene80DocValuesFormat, TestLucene86PointsFormat, TestLucene86SegmentInfoFormat, TestPerFieldDocValuesFormat, TestLatLonPointShapeQueries, TestLatLonPolygonShapeQueries, Test2BPostingsBytes, Test2BSortedDocValuesFixedSorted, TestAddIndexes, TestAllFilesCheckIndexHeader, TestAllFilesDetectBitFlips, TestAllFilesDetectTruncation, TestAllFilesHaveChecksumFooter, TestAllFilesHaveCodecHeader, TestCustomTermFreq, TestDeletionPolicy, TestDirectoryReader, TestDirectoryReaderReopen, TestDoc, TestDocsAndPositions, TestDocsWithFieldSet, TestDocumentWriter, TestDocumentsWriterDeleteQueue, TestDocumentsWriterStallControl, TestExceedMaxTermLength, TestExitableDirectoryReader, TestFieldInfos, TestFieldInvertState, TestFieldReuse, TestFlex, TestFlushByRamOrCountsPolicy, TestForTooMuchCloning, TestForceMergeForever, TestFrozenBufferedUpdates, TestIndexCommit, TestIndexFileDeleter, TestIndexInput, TestIndexManyDocuments, TestIndexOptions, TestIndexReaderClose, TestIndexSorting, TestIndexTooManyDocs, TestIndexWriter, TestIndexWriterCommit, TestIndexWriterConfig, TestIndexWriterDelete]
   [junit4] Completed [366/567 (1!)] on J1 in 9.23s, 26 tests, 2 errors, 1 skipped <<< FAILURES!

[...truncated 13718 lines...]
   [junit4] Suite: org.apache.solr.cloud.cdcr.CdcrReplicationHandlerTest
   [junit4]   2> 4401219 INFO  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.SolrTestCase Setting 'solr.default.confdir' system property to test-framework derived value of '/home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.6/checkout/solr/server/solr/configsets/_default/conf'
   [junit4]   2> 4401220 INFO  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.SolrTestCaseJ4 Created dataDir: /home/jenkins/jenkins-slave/workspace/Lucene-Solr-NightlyTests-8.6/checkout/solr/build/solr-core/test/J2/temp/solr.cloud.cdcr.CdcrReplicationHandlerTest_A6DEFBDB24C304FD-001/data-dir-173-001
   [junit4]   2> 4401220 WARN  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.SolrTestCaseJ4 startTrackingSearchers: numOpens=9 numCloses=9
   [junit4]   2> 4401220 INFO  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true) w/NUMERIC_DOCVALUES_SYSPROP=true
   [junit4]   2> 4401221 INFO  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.SolrTestCaseJ4 Randomized ssl (false) and clientAuth (false) via: @org.apache.solr.util.RandomizeSSL(reason=, value=NaN, ssl=NaN, clientAuth=NaN)
   [junit4]   2> 4401221 INFO  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.SolrTestCaseJ4 SecureRandom sanity checks: test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
   [junit4]   2> 4401221 INFO  (SUITE-CdcrReplicationHandlerTest-seed#[A6DEFBDB24C304FD]-worker) [     ] o.a.s.BaseDistributedSearchTestCase Setting hostContext system property: /
   [junit4]   2> 4401225 INFO  (TEST-CdcrReplicationHandlerTest.testReplicationWithBufferedUpdates-seed#[A6DEFBDB24C304FD]) [     ] o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
   [junit4]   2> 4401225 INFO  (ZkTestServer Run Thread) [     ] o.a.s.c.ZkTestServer cl

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

.s.m.SolrMetricManager Closing metric reporters for registry=solr.core.source_collection.shard1.replica_n2 tag=SolrCore@5cc9f06c
   [junit4]   2> 4526409 INFO  (zkCallback-21263-thread-2) [n:127.0.0.1:43597_ c:source_collection s:shard1 r:core_node4 x:source_collection_shard1_replica_n2 ] o.a.s.m.r.SolrJmxReporter Closing reporter [org.apache.solr.metrics.reporters.SolrJmxReporter@2898c825: rootName = null, domain = solr.core.source_collection.shard1.replica_n2, service url = null, agent id = null] for registry solr.core.source_collection.shard1.replica_n2/com.codahale.metrics.MetricRegistry@3de508c7
   [junit4]   2> 4526429 INFO  (zkCallback-21263-thread-2) [n:127.0.0.1:43597_ c:source_collection s:shard1 r:core_node4 x:source_collection_shard1_replica_n2 ] o.a.s.m.SolrMetricManager Closing metric reporters for registry=solr.collection.source_collection.shard1.leader tag=SolrCore@5cc9f06c
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   [junit4]   2> Jul 31, 2020 7:44:44 PM com.carrotsearch.randomizedtesting.ThreadLeakControl checkThreadLeaks
   [junit4]   2> WARNING: Will linger awaiting termination of 1 leaked thread(s).
   [junit4]   2> NOTE: test params are: codec=Asserting(Lucene86): {_root_=PostingsFormat(name=MockRandom), id=TestBloomFilteredLucenePostings(BloomFilteringPostingsFormat(Lucene84))}, docValues:{_version_=DocValuesFormat(name=Lucene80)}, maxPointsInLeafNode=1372, maxMBSortInHeap=5.05830823606037, sim=Asserting(RandomSimilarity(queryNorm=true): {}), locale=it, timezone=Canada/Mountain
   [junit4]   2> NOTE: Linux 4.15.0-108-generic amd64/Oracle Corporation 1.8.0_252 (64-bit)/cpus=4,threads=1,free=273256648,total=526909440
   [junit4]   2> NOTE: All tests run in this JVM: [TestCoreBackup, SolrMetricManagerTest, DistributedTermsComponentTest, TestTrieFacet, NodeAddedTriggerIntegrationTest, SpatialHeatmapFacetsTest, DirectSolrConnectionTest, TestLegacyField, TestCryptoKeys, TestSystemCollAutoCreate, TestPolicyCloud, TestTrackingShardHandlerFactory, AnalyticsQueryTest, TestSolrCLIRunExample, TestPartialUpdateDeduplication, ScheduledMaintenanceTriggerTest, XmlUpdateRequestHandlerTest, TestSolrCloudWithKerberosAlt, TestDistributedGrouping, TestExportTool, TestSortableTextField, AutoscalingHistoryHandlerTest, SolrIndexMetricsTest, TokenizerChainTest, HdfsBasicDistributedZkTest, TestConfigSetProperties, TestXmlQParserPlugin, HdfsTlogReplayBufferedWhileIndexingTest, PropertiesRequestHandlerTest, CoreAdminOperationTest, TestDocTermOrdsUninvertLimit, HttpPartitionTest, ConnectionReuseTest, TestComponentsName, RuleEngineTest, SmileWriterTest, TestSolr4Spatial2, TestQueryUtils, TestPayloadScoreQParserPlugin, TestUseDocValuesAsStored2, TestConfig, TestLeaderElectionZkExpiry, ZkStateReaderTest, TestNoOpRegenerator, TestCloudPivotFacet, TestPerFieldSimilarity, DistributedVersionInfoTest, PreAnalyzedFieldTest, TestRangeQuery, BadCopyFieldTest, TestMinMaxOnMultiValuedField, TestStressInPlaceUpdates, SuggesterFSTTest, IndexSizeTriggerTest, TestLegacyTerms, HdfsDirectoryFactoryTest, TestElisionMultitermQuery, SystemCollectionCompatTest, ChangedSchemaMergeTest, TestSimpleTrackingShardHandler, MergeStrategyTest, CollectionPropsTest, TestCustomDocTransformer, TestRecovery, TestRandomRequestDistribution, AsyncCallRequestStatusResponseTest, TestCloudSchemaless, TestBM25SimilarityFactory, ClassificationUpdateProcessorFactoryTest, TestExactSharedStatsCache, ByteBuffersDirectoryFactoryTest, MultiThreadedOCPTest, ZookeeperReadAPITest, TestPullReplicaErrorHandling, SpellCheckCollatorTest, ZkControllerTest, TestConfigSetsAPI, CSVRequestHandlerTest, TestCloudJSONFacetSKGEquiv, CreateCollectionCleanupTest, SolrTestCaseJ4Test, TestSSLRandomization, DistributedIntervalFacetingTest, DirectUpdateHandlerTest, TestTolerantSearch, TestZkChroot, DistribDocExpirationUpdateProcessorTest, CdcrBidirectionalTest, ConcurrentDeleteAndCreateCollectionTest, MultiDestinationAuditLoggerTest, JsonLoaderTest, TestNumericTerms64, TestFieldResource, TestJoin, TestInPlaceUpdatesDistrib, ResponseHeaderTest, GraphQueryTest, TestQuerySenderNoQuery, LegacyCloudClusterPropTest, LeaderFailureAfterFreshStartTest, TestIndexingPerformance, TestOnReconnectListenerSupport, SolrSlf4jReporterTest, TestSchemaField, SoftAutoCommitTest, TestLRUCache, TestBlendedInfixSuggestions, TestStressVersions, TestUtilizeNode, TestExplainDocTransformer, TestExclusionRuleCollectionAccess, IgnoreCommitOptimizeUpdateProcessorFactoryTest, TemplateUpdateProcessorTest, DaemonStreamApiTest, RequestLoggingTest, TestReloadDeadlock, TestSimComputePlanAction, DistanceFunctionTest, ClusterStateMockUtilTest, AlternateDirectoryTest, ShardRoutingCustomTest, RequiredFieldsTest, TestFieldCacheSort, TestSimPolicyCloud, ShardSplitTest, SolrGraphiteReporterTest, TestDistributedMap, TestMinHashQParser, CloneFieldUpdateProcessorFactoryTest, TestCloudRecovery2, UnloadDistributedZkTest, DistributedMLTComponentTest, TestDFRSimilarityFactory, ChaosMonkeyNothingIsSafeWithPullReplicasTest, TestCollectionAPIs, AtomicUpdateRemovalJavabinTest, AnalysisErrorHandlingTest, AutoAddReplicasIntegrationTest, SolrRrdBackendFactoryTest, TestSimExecutePlanAction, TestSchemaNameResource, TestDynamicFieldCollectionResource, CoreSorterTest, TestRestManager, ZkShardTermsTest, TestTestInjection, TriggerEventQueueTest, TriggerIntegrationTest, TestSimUtils, TestSnapshotCloudManager, BaseCdcrDistributedZkTest, CdcrReplicationHandlerTest]
   [junit4] Completed [582/914 (1!)] on J2 in 126.49s, 5 tests, 1 failure <<< FAILURES!

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