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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-818) IndexWriter should detect when it's used after being closed
Date Mon, 05 Mar 2007 09:45:50 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12477957
] 

Michael McCandless commented on LUCENE-818:
-------------------------------------------

To make that work, I think we'd have to convert the Exception into
either IOException or RuntimeException before throwing it (so we don't
have to change method signature).

But, I think this approach adds more noise to the source code.  Also
because it's "after the fact" then damage could have been done (I
*think* IndexWriter before 2.1 would gleefully keep writing, but
without holding the write lock!).  It would only catch cases where an
exception was thrown (many times there is none) whereas I prefer "fail
fast".


> 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, LUCENE-818.take2.patch, LUCENE-818.take3.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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