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From "Michael McCandless (JIRA)" <>
Subject [jira] Created: (LUCENE-1075) Possible thread hazard in IndexWriter.close(false)
Date Mon, 03 Dec 2007 15:34:43 GMT
Possible thread hazard in IndexWriter.close(false)

                 Key: LUCENE-1075
             Project: Lucene - Java
          Issue Type: Bug
          Components: Index
    Affects Versions: 2.3
            Reporter: Michael McCandless
            Assignee: Michael McCandless
            Priority: Minor
             Fix For: 2.3

Spinoff from this thread:

On reviewing the code I found one case where an aborted merge (from
calling close(false)) could write to files that a newly opened
IndexWriter would also try to write to.

I strengthened an existing test case in TestConcurrentMergeScheduler
to tickle this case, and also modified MockRAMDirectory to throw an
IOException if ever a file besides segments.gen is overwritten.

However, strangely, I can't get an unhandled exception to occur during
the test and I'm not sure why.  Still I think this is a good defensive
check so we should commit it.

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