[jira] [Commented] (LUCENE-5351) DirectoryReader#close can throw AlreadyClosedException if it's and NRT reader

["Daniel Collins (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-5351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13835259#comment-13835259 ] 

Daniel Collins commented on LUCENE-5351:
----------------------------------------

Hmm, I have noticed this error when using RAMDirectoryFactory, I often get an AlreadyClosedException when I shutdown my instance that uses that.... Will try to see if this is the same issue.

> 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
>
>
> 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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