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https://issues.apache.org/jira/browse/LUCENE-4190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13407104#comment-13407104
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Mark Miller commented on LUCENE-4190:
-------------------------------------
bq. Thats ok, its clearly another typical Solr-versus-Robert battle here, where
Mark+Yonik both gang up on me.
I don't have an opinion on this issue. A lot of smart people have already given
input, and I was interested to read about it. I have not formulated my own
opinion yet.
I also don't mind if you and Yonik have disagreement or debate. As long as you
act reasonably.
Anyone that ignores consensus and threatens license revoking has me not on
their side. That's part of the role of a PMC member IMO. To keep an eye out for
unhealthy community behavior and point it out. All the disagreement in the
world is fine, but you have to play in the sandbox.
> IndexWriter deletes non-Lucene files
> ------------------------------------
>
> Key: LUCENE-4190
> URL: https://issues.apache.org/jira/browse/LUCENE-4190
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Michael McCandless
> Assignee: Robert Muir
> Fix For: 4.0, 5.0
>
> Attachments: LUCENE-4190.patch, LUCENE-4190.patch
>
>
> Carl Austin raised a good issue in a comment on my Lucene 4.0.0 alpha blog
> post:
> http://blog.mikemccandless.com/2012/07/lucene-400-alpha-at-long-last.html
> IndexWriter will now (as of 4.0) delete all foreign files from the index
> directory. We made this change because Codecs are free to write to any files
> now, so the space of filenames is hard to "bound".
> But if the user accidentally uses the wrong directory (eg c:/) then we will
> in fact delete important stuff.
> I think we can at least use some simple criteria (must start with _, maybe
> must fit certain pattern eg _<base36>(_X).Y), so we are much less likely to
> delete a non-Lucene file....
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