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From Mark Miller <markrmil...@gmail.com>
Subject Re: Lucene 2.9 RC4 now available for testing
Date Mon, 14 Sep 2009 23:57:14 GMT
We certainly could - only thought I would have is that we do want RC4 to
get a little exposure if possible (though at this point, I don't see
more than a couple days being needed, and we have had one or two).

I'll go when you guys say go.

- Mark

Yonik Seeley wrote:
> We could cut a *real* release candidate that we could VOTE on soon,
> right?  It's bee 3.5 weeks since the first release candidate.
>
> -Yonik
> http://www.lucidimagination.com
>
>
> On Sun, Sep 13, 2009 at 10:06 AM, Mark Miller <markrmiller@gmail.com>
wrote:
> Hello Lucene users,
>
> On behalf of the Lucene dev community (a growing community far larger
> than just the committers) I would like to announce the fourth release
> candidate for Lucene 2.9.
>
> Please download and check it out - take it for a spin and kick the
> tires. If all goes well, we hope to release the final version of
> Lucene 2.9 very shortly.
>
> We let out a bug in the lock factory changes we made in RC3 -
> making a new SimpleFSDirectory with a String param would throw
> an illegal state exception - a fix for this is in RC4. We also
> took the opportunity to add a few more documentation improvements,
> take care of another another minor bug fix or two, and move the
> message package from contrib queryParser to core.
>
> While we generally try and maintain full backwards compatibility
> between major versions, Lucene 2.9 has a variety of breaks that are
> spelled out in the 'Changes in backwards compatibility policy' section
> of CHANGES.txt.
>
> We recommend that you recompile your application with Lucene 2.9
> rather than attempting to drop it in. This will alert you to any
> issues you may have to fix if you are affected by one of the backward
> compatibility breaks. As always, its a really good idea to thoroughly
> read CHANGES.txt before upgrading. Also, remember that this is a
> release candidate, and not the final Lucene 2.9 release.
>
> Lucene 2.9 comes with a bevy of new features, including:
>
>  * Per segment searching and caching (can lead to much faster reopen
>    among other things)
>
>  * Near real-time search capabilities added to IndexWriter
>
>  * New Query types
>
>  * Smarter, more scalable multi-term queries (wildcard, range, etc)
>
>  * A freshly optimized Collector/Scorer API
>
>  * Improved Unicode support and the addition of Collation contrib
>
>  * A new Attribute based TokenStream API
>
>  * A new QueryParser framework in contrib with a core QueryParser
>    replacement impl included.
>
>  * Scoring is now optional when sorting by Field, or using a custom
>    Collector, gaining sizable performance when scores are not
>    required.
>
>  * New analyzers (PersianAnalyzer, ArabicAnalyzer,
>    SmartChineseAnalyzer)
>
>  * New fast-vector-highlighter
>
>  * Lucene now includes high-performance handling of numeric fields.
>    Such fields are indexed with a trie structure, enabling simple to
>    use and much faster numeric range searching without having to
>    externally pre-process numeric values into textual values.
>
>  ---
>
> And many, many more features, bug fixes, optimizations, and various
> improvements. You can find the full list of changes here:
>
> HTML version:
> http://people.apache.org/~markrmiller/staging-area/lucene2.9changes/Changes.html
>
> Text version:
> http://people.apache.org/~markrmiller/staging-area/lucene2.9changes/CHANGES.txt
>
> Many changes have also occurred in Lucene's Contrib area:
>
> HTML version:
> http://people.apache.org/~markrmiller/staging-area/lucene2.9changes/Contrib-Changes.html
>
> Text version:
> http://people.apache.org/~markrmiller/staging-area/lucene2.9changes/CONTRIB-CHANGES.txt
>
>
> Download release candidate 4 here:
> http://people.apache.org/~markrmiller/staging-area/lucene2.9rc4/
>
> Be sure to report back with any issues you find!
>
> Thanks,
>
> Mark Miller
>>
>>
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