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From Michael McCandless <luc...@mikemccandless.com>
Subject Re: Approximate release date for Lucene 2.9
Date Fri, 19 Dec 2008 11:23:43 GMT

The new extensible TokenStream API (based on AttributeSource) is also  
in 2.9.

Mike

Mark Miller wrote:

> Well look at the issues and see for yourself :)
>
> Its a subjective call I think. Heres my take:
>
> There are not going to be too many sweeping changes in the next  
> release. There are tons of little bug fixes and improvements, but  
> not a lot of the bullet point type stuff that you mention in your  
> wishlist. Its a whole lot of little steps forward.
>
> When it comes to sorting, there a couple possible goodies coming in  
> the next release:
>
> TrieRangeQuery has been added to contrib. Super awesome, super  
> efficient, large scale sorting.
>
> Work is ongoing to change searching semantics so that sorting is  
> much faster in many cases. In fact, their may be search speed  
> improvements across the board in many cases (don't quote me <g>).  
> Sort fieldcache loading in the multi segment case will likely also  
> be *blazingly* faster. Also, Filters and Fieldcaches may be pushed  
> down to a single segment, making reopening sort fieldcaches *much*  
> more efficient. Thats a nice step towards realtime.
>
> RangeQuery, PrefixQuery and WildcardQuery will all have a constant  
> score mode as well - this avoids maxclause limits and is often much  
> faster on very large indexes.
>
> Locallucene, a very cool bit of code that allows geo search, might  
> make contrib for the next release.
>
> Beyond that, there are a few more little gems, but its a lot of  
> little fixes and improvements more than big features.
>
> Column stride fields and flexible indexing will not be in the next  
> release in my opinion, but a lot of progress towards flexible  
> indexing has been made.
>
> Keep in mind thats a biased view of the next release - I worked on  
> two of those issues. Be sure to take it all with a healthy grain of  
> salt.
>
> - Mark
>
> Ganesh wrote:
>> Does Lucene 2.9 has real time search? Any improvements in sorting?  
>> Any facility to store a payload per document (without updating  
>> document)?
>>
>> Please highlight the important feature?
>>
>> Regards
>> Ganesh
>>
>> ----- Original Message ----- From: "Michael McCandless" <lucene@mikemccandless.com

>> >
>> To: <java-user@lucene.apache.org>
>> Sent: Friday, December 19, 2008 3:40 AM
>> Subject: Re: Approximate release date for Lucene 2.9
>>
>>
>>>
>>> Well... there are a couple threads on java-dev discussing this  
>>> "now":
>>>
>>>  http://www.nabble.com/2.9-3.0-plan---Java-1.5-td20972994.html
>>>  http://www.nabble.com/2.9,-3.0-and-deprecation-td20099343.html
>>>
>>> though they seem to have petered out.
>>>
>>> Also we have 29 open issues for 2.9:
>>>
>>>
>>> https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&&pid=12310110&fixfor=12312682&resolution=-1&sorter/field=priority&sorter/order=DESC
>>>
>>> For 2.4 it took at least a month to whittle the list down to 0.
>>>
>>> So it's hard to say?  I'd love to see 2.9 out earlyish next year  
>>> though.
>>>
>>> Mike
>>>
>>> Kay Kay wrote:
>>>
>>>> Hi -
>>>> I am just curious - what is the approximate release target date  
>>>> that  we have for Lucene 2.9 ( currently in beta in dev).
>>>>
>>>>
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>>>
>>>
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>>
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>
>
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