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https://issues.apache.org/jira/browse/LUCENE-5351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13847914#comment-13847914
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Michael McCandless commented on LUCENE-5351:
--------------------------------------------
I don't think we should commit this; I think the application should not close
the Directory until it has closed the readers that are using that Directory.
> DirectoryReader#close can throw AlreadyClosedException if it's and NRT reader
> -----------------------------------------------------------------------------
>
> Key: LUCENE-5351
> URL: https://issues.apache.org/jira/browse/LUCENE-5351
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.6
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Fix For: 5.0, 4.7
>
> Attachments: LUCENE-5351.patch
>
>
> in StandartDirectoryReader#doClose we do this:
> {noformat}
> if (writer != null) {
> // Since we just closed, writer may now be able to
> // delete unused files:
> writer.deletePendingFiles();
> }
> {noformat}
> which can throw AlreadyClosedException from the directory if the Direcotory
> has already closed. To me this looks like a bug and we should catch this
> exception from the directory.
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