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https://issues.apache.org/jira/browse/LUCENE-6684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14679144#comment-14679144
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Robert Muir commented on LUCENE-6684:
-------------------------------------
It happens regardless of the lock factory. And the last time i looked at this
test, it is not actually stressing locks: it only makes one writer at a time.
Maybe I am missing something.
> TestSimpleFSLockFactory.testStressLock assert trip only on Windows?
> -------------------------------------------------------------------
>
> Key: LUCENE-6684
> URL: https://issues.apache.org/jira/browse/LUCENE-6684
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael McCandless
>
> It's happened at least twice before; here's the second occurrence:
> http://jenkins.thetaphi.de/job/Lucene-Solr-trunk-Windows/5042/
> {noformat}
> [junit4] 2> NOTE: reproduce with: ant test
> -Dtestcase=TestSimpleFSLockFactory -Dtests.method=testStressLocks
> -Dtests.seed=86DA7F883D64B036 -Dtests.slow=true -Dtests.locale=th
> -Dtests.timezone=America/Metlakatla -Dtests.asserts=true
> -Dtests.file.encoding=Cp1252
> [junit4] ERROR 1.58s J1 | TestSimpleFSLockFactory.testStressLocks <<<
> [junit4] > Throwable #1:
> com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an
> uncaught exception in thread: Thread[id=62, name=Thread-35, state=RUNNABLE,
> group=TGRP-TestSimpleFSLockFactory]
> [junit4] > at
> __randomizedtesting.SeedInfo.seed([86DA7F883D64B036:D8EB317521C87850]:0)
> [junit4] > Caused by: java.lang.AssertionError: hit unexpected
> NoSuchFileException: file=_3.cfs
> [junit4] > at
> __randomizedtesting.SeedInfo.seed([86DA7F883D64B036]:0)
> [junit4] > at
> org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:750)
> [junit4] > at
> org.apache.lucene.index.IndexFileDeleter.deletePendingFiles(IndexFileDeleter.java:528)
> [junit4] > at
> org.apache.lucene.index.IndexFileDeleter.deleteNewFiles(IndexFileDeleter.java:731)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.deleteNewFiles(IndexWriter.java:4686)
> [junit4] > at
> org.apache.lucene.index.DocumentsWriter$DeleteNewFilesEvent.process(DocumentsWriter.java:732)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4743)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.processEvents(IndexWriter.java:4734)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3115)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3082)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:1064)
> [junit4] > at
> org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1109)
> [junit4] > at
> org.apache.lucene.store.BaseLockFactoryTestCase$WriterThread.run(BaseLockFactoryTestCase.java:221)
> [junit4] IGNOR/A 0.01s J1 | TestSimpleFSLockFactory.testDeleteLockFile
> [junit4] > Assumption #1: test requires the ability to delete a locked
> file(throwable: java.io.IOException: cannot delete file: test.lock, a virus
> scanner has it open)
> [junit4] 2> NOTE: test params are: codec=CheapBastard,
> sim=DefaultSimilarity, locale=th, timezone=America/Metlakatla
> [junit4] 2> NOTE: Windows 7 6.1 amd64/Oracle Corporation 1.8.0_45
> (64-bit)/cpus=3,threads=1,free=44713016,total=64880640
> [junit4] 2> NOTE: All tests run in this JVM: [TestRAMDirectory,
> TestFastDecompressionMode, TestSetOnce, TestRegexpQuery, TestDeterminism,
> TestCachingTokenFilter, TestIOUtils, TestSimpleFSLockFactory]
> [junit4] Completed [16/398] on J1 in 5.05s, 7 tests, 1 error, 1 skipped
> <<< FAILURES!
> {noformat}
> It means that somehow on flush IW was asked to remove a new file _3.cfs yet
> that file does not exist. I don't think this test generates fake (for
> testing) exceptions so it's especially curious...
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