[jira] Commented: (LUCENE-818) IndexWriter should detect when it's used after being closed

["Doron Cohen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12477398 ] 

Doron Cohen commented on LUCENE-818:
------------------------------------

Throwing that exception for close() seems a bit too restrictive...
Perhaps for close() of an already closed object just do nothing?
This would be more forgiving/friendly to "over protecting" (possibly existing) applications.



> IndexWriter should detect when it's used after being closed
> -----------------------------------------------------------
>
>                 Key: LUCENE-818
>                 URL: https://issues.apache.org/jira/browse/LUCENE-818
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.1
>            Reporter: Michael McCandless
>         Assigned To: Michael McCandless
>            Priority: Minor
>         Attachments: LUCENE-818.patch
>
>
> Spinoff from this thread on java-user:
>     http://www.gossamer-threads.com/lists/lucene/java-user/45986
> If you call addDocument on IndexWriter after it's closed you'll hit a
> hard-to-explain NullPointerException (because the RAMDirectory was
> closed).  Before 2.1, apparently you won't hit any exception and the
> IndexWrite will keep running but will have released it's write lock (I
> think).
> I plan to fix IndexWriter methods to throw an IllegalStateException if
> it has been closed.

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