Various codec formats' testRandomExceptions() are failing with unexpected FileNotFoundException [LUCENE-6769]

From (I'll attach the full Jenkins `consoleText`, which has a bunch of exception output):

```
[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestLucene46SegmentInfoFormat -Dtests.method=testRandomExceptions -Dtests.seed=DE5D0B60FB3DAD54 -Dtests.multiplier=2 -Dtests.nightly=true -Dtests.slow=true -Dtests.linedocsfile=/x1/jenkins/lucene-data/enwiki.random.lines.txt -Dtests.locale=de -Dtests.timezone=America/Sao_Paulo -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
[junit4] FAILURE 0.53s J1 | TestLucene46SegmentInfoFormat.testRandomExceptions <<<
[junit4] > Throwable #1: java.lang.AssertionError: hit unexpected FileNotFoundException: file=_5k.si
[junit4] > at __randomizedtesting.SeedInfo.seed([DE5D0B60FB3DAD54:B67265A46533F4F4]:0)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:753)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deletePendingFiles(IndexFileDeleter.java:530)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.refresh(IndexFileDeleter.java:456)
[junit4] > at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3680)
[junit4] > at org.apache.lucene.index.SerialMergeScheduler.merge(SerialMergeScheduler.java:40)
[junit4] > at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1929)
[junit4] > at org.apache.lucene.index.IndexWriter.doAfterSegmentFlushed(IndexWriter.java:4731)
[junit4] > at org.apache.lucene.index.DocumentsWriter$MergePendingEvent.process(DocumentsWriter.java:695)
[junit4] > at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4757)
[junit4] > at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4748)
[junit4] > at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1476)
[junit4] > at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1254)
[junit4] > at org.apache.lucene.index.BaseIndexFileFormatTestCase.testRandomExceptions(BaseIndexFileFormatTestCase.java:429)
[junit4] > at org.apache.lucene.index.BaseSegmentInfoFormatTestCase.testRandomExceptions(BaseSegmentInfoFormatTestCase.java:48)

[...]

[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestLucene46FieldInfoFormat -Dtests.method=testRandomExceptions -Dtests.seed=DE5D0B60FB3DAD54 -Dtests.multiplier=2 -Dtests.nightly=true -Dtests.slow=true -Dtests.linedocsfile=/x1/jenkins/lucene-data/enwiki.random.lines.txt -Dtests.locale=sr_BA -Dtests.timezone=Asia/Tashkent -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
[junit4] FAILURE 0.48s J0 | TestLucene46FieldInfoFormat.testRandomExceptions <<<
[junit4] > Throwable #1: java.lang.AssertionError: hit unexpected FileNotFoundException: file=_5k.si
[junit4] > at __randomizedtesting.SeedInfo.seed([DE5D0B60FB3DAD54:B67265A46533F4F4]:0)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:753)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deletePendingFiles(IndexFileDeleter.java:530)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.refresh(IndexFileDeleter.java:456)
[junit4] > at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3680)
[junit4] > at org.apache.lucene.index.SerialMergeScheduler.merge(SerialMergeScheduler.java:40)
[junit4] > at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1929)
[junit4] > at org.apache.lucene.index.IndexWriter.doAfterSegmentFlushed(IndexWriter.java:4731)
[junit4] > at org.apache.lucene.index.DocumentsWriter$MergePendingEvent.process(DocumentsWriter.java:695)
[junit4] > at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4757)
[junit4] > at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4748)
[junit4] > at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1476)
[junit4] > at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1254)
[junit4] > at org.apache.lucene.index.BaseIndexFileFormatTestCase.testRandomExceptions(BaseIndexFileFormatTestCase.java:429)
[junit4] > at org.apache.lucene.index.BaseFieldInfoFormatTestCase.testRandomExceptions(BaseFieldInfoFormatTestCase.java:50)
```

From (again, I'll attach the `consoleText`):

```
[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestLucene46SegmentInfoFormat -Dtests.method=testRandomExceptions -Dtests.seed=1A10EDD0B2491A33 -Dtests.multiplier=2 -Dtests.nightly=true -Dtests.slow=true -Dtests.linedocsfile=/x1/jenkins/lucene-data/enwiki.random.lines.txt -Dtests.locale=fr -Dtests.timezone=BET -Dtests.asserts=true -Dtests.file.encoding=UTF-8
[junit4] FAILURE 0.20s J2 | TestLucene46SegmentInfoFormat.testRandomExceptions <<<
[junit4] > Throwable #1: java.lang.AssertionError: hit unexpected FileNotFoundException: file=_3g.si
[junit4] > at __randomizedtesting.SeedInfo.seed([1A10EDD0B2491A33:723F83142C474393]:0)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:753)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deletePendingFiles(IndexFileDeleter.java:530)
[junit4] > at org.apache.lucene.index.IndexFileDeleter.deleteNewFiles(IndexFileDeleter.java:733)
[junit4] > at org.apache.lucene.index.IndexWriter.deleteNewFiles(IndexWriter.java:4700)
[junit4] > at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4218)
[junit4] > at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3664)
[junit4] > at org.apache.lucene.index.SerialMergeScheduler.merge(SerialMergeScheduler.java:40)
[junit4] > at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1929)
[junit4] > at org.apache.lucene.index.IndexWriter.doAfterSegmentFlushed(IndexWriter.java:4731)
[junit4] > at org.apache.lucene.index.DocumentsWriter$MergePendingEvent.process(DocumentsWriter.java:695)
[junit4] > at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4757)
[junit4] > at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4748)
[junit4] > at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1476)
[junit4] > at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1254)
[junit4] > at org.apache.lucene.index.BaseIndexFileFormatTestCase.testRandomExceptions(BaseIndexFileFormatTestCase.java:429)
[junit4] > at org.apache.lucene.index.BaseSegmentInfoFormatTestCase.testRandomExceptions(BaseSegmentInfoFormatTestCase.java:48)
```

From (which has since expired on Policeman Jenkins - below is from ):

```
Build: http://jenkins.thetaphi.de/job/Lucene-Solr-5.x-Linux/13710/
Java: 64bit/jdk1.7.0_80 -XX:+UseCompressedOops -XX:+UseG1GC

1 tests failed.
FAILED:
org.apache.lucene.codecs.blocktree.TestLucene40BlockFormat.testRandomExceptions

Error Message:
hit unexpected FileNotFoundException: file=_9.si

Stack Trace:
java.lang.AssertionError: hit unexpected FileNotFoundException: file=_9.si
at __randomizedtesting.SeedInfo.seed([E3D1B260C7119B4B:8BFEDCA4591FC2EB]:0)
at
org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:753)
at
org.apache.lucene.index.IndexFileDeleter.deletePendingFiles(IndexFileDeleter.java:530)
at org.apache.lucene.index.IndexFileDeleter.refresh(IndexFileDeleter.java:456)
at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3680)
at
org.apache.lucene.index.SerialMergeScheduler.merge(SerialMergeScheduler.java:40)
at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1929)
at
org.apache.lucene.index.IndexWriter.doAfterSegmentFlushed(IndexWriter.java:4731)
at
org.apache.lucene.index.DocumentsWriter$MergePendingEvent.process(DocumentsWriter.java:695)
at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4757)
at org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4748)
at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1476)
at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1254)
at
org.apache.lucene.index.BaseIndexFileFormatTestCase.testRandomExceptions(BaseIndexFileFormatTestCase.java:429)
at
org.apache.lucene.index.BasePostingsFormatTestCase.testRandomExceptions(BasePostingsFormatTestCase.java:86)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1627)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:836)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:872)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:886)
at
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
at
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
at
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
at
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
at
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
at
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:845)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:747)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:781)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:792)
at
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
at
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
at
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
at
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
at
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
at
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
at java.lang.Thread.run(Thread.java:745)

Build Log:
[...truncated 4475 lines...]
[junit4] Suite: org.apache.lucene.codecs.blocktree.TestLucene40BlockFormat
[junit4] 1> Unexpected exception: dumping fake-exception-log:...
[junit4] 1>
[junit4] 1> TEST: got expected fake exc:a random IOException (_7.cfe)
[junit4] 1> java.io.FileNotFoundException: a random IOException (_7.cfe)
[junit4] 1> at
org.apache.lucene.store.MockDirectoryWrapper.maybeThrowIOExceptionOnOpen(MockDirectoryWrapper.java:458)
[junit4] 1> at
org.apache.lucene.store.MockDirectoryWrapper.createOutput(MockDirectoryWrapper.java:548)
[junit4] 1> at
org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44)
[junit4] 1> at
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
[junit4] 1> at
org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43)
[junit4] 1> at
org.apache.lucene.codecs.lucene40.Lucene40CompoundWriter.close(Lucene40CompoundWriter.java:163)
[junit4] 1> at
org.apache.lucene.codecs.lucene40.Lucene40CompoundReader.close(Lucene40CompoundReader.java:160)
[junit4] 1> at
org.apache.lucene.codecs.lucene40.Lucene40CompoundFormat.write(Lucene40CompoundFormat.java:53)
[junit4] 1> at
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4680)
[junit4] 1> at
org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:492)
[junit4] 1> at
org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:459)
[junit4] 1> at
org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:503)
[junit4] 1> at
org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:615)
[junit4] 1> at
org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:423)
[junit4] 1> at
org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:86)
[junit4] 1> at
org.apache.lucene.index.BaseIndexFileFormatTestCase.testRandomExceptions(BaseIndexFileFormatTestCase.java:459)
[junit4] 1> at
org.apache.lucene.index.BasePostingsFormatTestCase.testRandomExceptions(BasePostingsFormatTestCase.java:86)
[junit4] 1> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit4] 1> at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[junit4] 1> at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[junit4] 1> at java.lang.reflect.Method.invoke(Method.java:606)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1627)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:836)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:872)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:886)
[junit4] 1> at
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
[junit4] 1> at
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
[junit4] 1> at
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
[junit4] 1> at
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
[junit4] 1> at
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
[junit4] 1> at
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
[junit4] 1> at
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
[junit4] 1> at
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:845)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:747)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:781)
[junit4] 1> at
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:792)
[junit4] 1> at
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
[junit4] 1> at
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
[junit4] 1> at
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
[junit4] 1> at
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
[junit4] 1> at
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
[junit4] 1> at
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
[junit4] 1> at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
[junit4] 1> at
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
[junit4] 1> at java.lang.Thread.run(Thread.java:745)
[junit4] 1>
[junit4] 2> NOTE: reproduce with: ant test
-Dtestcase=TestLucene40BlockFormat -Dtests.method=testRandomExceptions
-Dtests.seed=E3D1B260C7119B4B -Dtests.multiplier=3 -Dtests.slow=true
-Dtests.locale=en_IE -Dtests.timezone=America/Virgin -Dtests.asserts=true
-Dtests.file.encoding=UTF-8
[junit4] FAILURE 0.04s J0 | TestLucene40BlockFormat.testRandomExceptions <<<
[junit4] > Throwable #1: java.lang.AssertionError: hit unexpected
FileNotFoundException: file=_9.si
[junit4] > at
__randomizedtesting.SeedInfo.seed([E3D1B260C7119B4B:8BFEDCA4591FC2EB]:0)
[junit4] > at
org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:753)
[junit4] > at
org.apache.lucene.index.IndexFileDeleter.deletePendingFiles(IndexFileDeleter.java:530)
[junit4] > at
org.apache.lucene.index.IndexFileDeleter.refresh(IndexFileDeleter.java:456)
[junit4] > at
org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3680)
[junit4] > at
org.apache.lucene.index.SerialMergeScheduler.merge(SerialMergeScheduler.java:40)
[junit4] > at
org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1929)
[junit4] > at
org.apache.lucene.index.IndexWriter.doAfterSegmentFlushed(IndexWriter.java:4731)
[junit4] > at
org.apache.lucene.index.DocumentsWriter$MergePendingEvent.process(DocumentsWriter.java:695)
[junit4] > at
org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4757)
[junit4] > at
org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4748)
[junit4] > at
org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1476)
[junit4] > at
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1254)
[junit4] > at
org.apache.lucene.index.BaseIndexFileFormatTestCase.testRandomExceptions(BaseIndexFileFormatTestCase.java:429)
[junit4] > at
org.apache.lucene.index.BasePostingsFormatTestCase.testRandomExceptions(BasePostingsFormatTestCase.java:86)
[junit4] > at java.lang.Thread.run(Thread.java:745)
[junit4] 2> NOTE: leaving temporary files on disk at:
/home/jenkins/workspace/Lucene-Solr-5.x-Linux/lucene/build/backward-codecs/test/J0/temp/lucene.codecs.blocktree.TestLucene40BlockFormat_E3D1B260C7119B4B-001
[junit4] 2> NOTE: test params are: codec=Asserting(Lucene53): {},
docValues:{}, sim=RandomSimilarityProvider(queryNorm=false,coord=crazy):
{body=DFR I(F)1, f_DOCS_AND_FREQS_AND_POSITIONS=IB LL-D3(800.0), field=DFR
I(ne)B1, f_DOCS=DFR I(F)LZ(0.3), f_DOCS_AND_FREQS=DFR I(n)B2,
f_DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS=DFR I(ne)L1, titleTokenized=IB
LL-L2}, locale=en_IE, timezone=America/Virgin
[junit4] 2> NOTE: Linux 3.19.0-26-generic amd64/Oracle Corporation 1.7.0_80
(64-bit)/cpus=12,threads=1,free=196792272,total=525336576
[junit4] 2> NOTE: All tests run in this JVM: [TestReuseDocsEnum,
TestMaxPositionInOldIndex, TestLucene40TermVectorsFormat,
TestLucene40SegmentInfoFormat, TestLucene42NormsFormat,
TestBackwardsCompatibility, TestBitVector, TestLucene40PostingsFormat,
TestLucene40BlockFormat]
[junit4] Completed [19/30] on J0 in 3.12s, 31 tests, 1 failure <<< FAILURES!
```

@mikemccand previously looked at a couple of these: and .

@mikemccand noted when fixing one from July (from - oddly this email is not findable in markmail.org's archive):

> I just committed a fix\. This was caused by a new assert from
> #7674, basically making IndexWriter more picky such that a codec
> is not allowed to have created a file if in fact it didn't create it\.
>
> In this case the SimpleTextSIFormat was claiming to have created a
> file (si\.addFile) before createOutput succeeded, but then createOutput
> hit an exc (and the Directory impl took care of removing the file
> itself)\.\.\.

---
Migrated from [LUCENE-6769](https://issues.apache.org/jira/browse/LUCENE-6769) by Steven Rowe (@sarowe), updated Oct 27 2015
Attachments: [Lucene-Solr-NightlyTests-5.x-934-consoleText.txt](https://apache.github.io/lucene-jira-archive/attachments/LUCENE-6769/Lucene-Solr-NightlyTests-5.x-934-consoleText.txt), [Lucene-Solr-NightlyTests-5.x-939-consoleText.txt](https://apache.github.io/lucene-jira-archive/attachments/LUCENE-6769/Lucene-Solr-NightlyTests-5.x-939-consoleText.txt)
Linked issues:
- #7674

Start by reproducing the reported ant test command for TestLucene46SegmentInfoFormat.testRandomExceptions, then read BaseIndexFileFormatTestCase.testRandomExceptions and the IndexFileDeleter stack frames named in the report. Compare the failures across the SegmentInfo, FieldInfo, and BlockTree format tests. Done means the random-exception tests no longer report an unexpected FileNotFoundException.

Written by the indexing model from the issue text.