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https://issues.apache.org/jira/browse/LUCENE-2811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12970981#action_12970981
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Michael McCandless commented on LUCENE-2811:
--------------------------------------------
Committed to trunk...
I'll let this age a bit before backporting to 3.x.
> SegmentInfo should explicitly track whether that segment wrote term vectors
> ---------------------------------------------------------------------------
>
> Key: LUCENE-2811
> URL: https://issues.apache.org/jira/browse/LUCENE-2811
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2811.patch
>
>
> Today SegmentInfo doesn't know if it has vectors, which means its files()
> method must check if the files exist.
> This leads to subtle bugs, because Si.files() caches the files but then we
> fail to invalidate that later when the term vectors files are created.
> It also leads to sloppy code, eg TermVectorsReader "gracefully" handles being
> opened when the files do not exist. I don't like that; it should only be
> opened if they exist.
> This also fixes these intermittent failures we've been seeing:
> {noformat}
> junit.framework.AssertionFailedError: IndexFileDeleter doesn't know about
> file _1e.tvx
> at
> org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:979)
> at
> org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:917)
> at
> org.apache.lucene.index.IndexWriter.filesExist(IndexWriter.java:3633)
> at
> org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:3699)
> at
> org.apache.lucene.index.IndexWriter.prepareCommit(IndexWriter.java:2407)
> at
> org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2478)
> at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2460)
> at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2444)
> at
> org.apache.lucene.index.TestIndexWriterExceptions.testRandomExceptionsThreads(TestIndexWriterExceptions.java:213)
> {noformat}
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