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https://issues.apache.org/jira/browse/LUCENE-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717769#action_12717769
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Earwin Burrfoot commented on LUCENE-1453:
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bq. I think it should (be closed in a finally clause).
Then there's the next question of the same sort, but probably belonging in a
separate issue. If we close a DR and one of SR throws an exception - should we
close the others (currently we don't)? What is the right way, in general, of
handling IOExceptions on IR close? Can we retry the close? What does this
exception mean?
> When reopen returns a new IndexReader, both IndexReaders may now control the
> lifecycle of the underlying Directory which is managed by reference counting
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-1453
> URL: https://issues.apache.org/jira/browse/LUCENE-1453
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 2.4
> Reporter: Mark Miller
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.4.1, 2.9
>
> Attachments: Failing-testcase-LUCENE-1453.patch,
> LUCENE-1453-with-FSDir-open.patch, LUCENE-1453.patch, LUCENE-1453.patch,
> LUCENE-1453.patch, LUCENE-1453.patch
>
>
> Rough summary. Basically, FSDirectory tracks references to FSDirectory and
> when IndexReader.reopen shares a Directory with a created IndexReader and
> closeDirectory is true, FSDirectory's ref management will see two decrements
> for one increment. You can end up getting an AlreadyClosed exception on the
> Directory when the IndexReader is open.
> I have a test I'll put up. A solution seems fairly straightforward (at least
> in what needs to be accomplished).
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