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From Robert Muir <rcm...@gmail.com>
Subject Re: Lucene's default settings & back compatibility
Date Thu, 21 May 2009 17:01:15 GMT
yeah, i was thinking the more likely case of where something like "teh" is
in the list...

On Thu, May 21, 2009 at 12:25 PM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> On Thu, May 21, 2009 at 12:19 PM, Robert Muir <rcmuir@gmail.com> wrote:
> > even as simple as changing default stopword list for some analyzer could
> be
> > an issue, if the user doesn't re-index in response to that change.
>
> OK, right.
>
> So say we forgot to include "the" in the default English stopwords
> list (yes, an extreme example...).
>
> Under the proposed changes 1 & 2 to back-compat policy, we would add
> "the" to the default stopword list, so new users get the fix, but
> still keep the the-less list accessible (deprecated).  We'd add an
> entry in CHANGES.txt saying this happened, and then show code on how
> to get back to the the-less stopword list.
>
> New users using that StopFilter would properly see "the" filtered out.
>  Users who upgraded would need to fix their code to switch back to the
> deprecated the-less list.
>
> Mike
>
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-- 
Robert Muir
rcmuir@gmail.com

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