Mailing-List: contact java-dev-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: java-dev@lucene.apache.org
Received-SPF: pass (athena.apache.org: domain of torindan@gmail.com designates
 209.85.220.168 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type:content-transfer-encoding;
        b=OucxhxtmFfNgh97TxwbeQ00M1C8B4EOhl+4PAz56ju8A9C06UKi1MHvq1s+I6Ad3s5
         WmFFVKV+6aeT+yCySa9dfLsMCQAtsQyAF02dwAnEUbV2uOfqmTwkV1L1Nn1+NegD3ZPT
         6RPlpdo92ZFzPOTET6+O4N36KdEIi36xlXt30=
MIME-Version: 1.0
In-Reply-To: <D7CF57DC-33A2-4D68-9F44-12867ECFC2FC@mikemccandless.com>
References: <49A354DC.30907@gmail.com>
	 <3304BABA-2441-4369-BF53-0FE7FF593B5B@mikemccandless.com>
	 <49A6DEC9.7050600@gmail.com>
	 <92C633F7-0DF2-449B-B30B-3826A017C1D1@mikemccandless.com>
	 <49A82DAD.5060103@gmail.com>
	 <691FBA1C-69E8-4B9C-A9AE-97D00E3DBA34@mikemccandless.com>
	 <2ffb6d060903012342h177c67eage4541637028e4ad9@mail.gmail.com>
	 <D7CF57DC-33A2-4D68-9F44-12867ECFC2FC@mikemccandless.com>
Date: Mon, 2 Mar 2009 13:16:29 +0200
Message-ID: <2ffb6d060903020316o548a91dfodb008c0b3c2a2e11@mail.gmail.com>
Subject: Re: segments.gen file
From: =?UTF-8?B?RGFuaWwgxaJPUklO?= <torindan@gmail.com>
To: java-dev@lucene.apache.org
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

I'm more interested in reopen(IndexCommit) so I could have full
benefits of LUCENE-1483 (faster open, warm caches, less GC and so on)
but on specific commit point.

I'm not sure it's possible in current trunk, and if we have
open(IndexCommit) & company, maybe we should also have similar set of
methods for reopen?

On Mon, Mar 2, 2009 at 12:12, Michael McCandless
<lucene@mikemccandless.com> wrote:
>
> This is already available, as of 2.4.
>
> Mike
>
> Danil =C5=A2ORIN wrote:
>
>> What about opening IndexReader/Searcher on certain commit point?
>> Will it be implemented in 2.9?
>>
>> The use-case is similar to the one Michael Busch described, only I
>> would like to open (or reopen) a searcher on specific commit point.
>>
>>
>> On Fri, Feb 27, 2009 at 20:31, Michael McCandless
>> <lucene@mikemccandless.com> wrote:
>>>
>>> Michael Busch wrote:
>>>
>>>> Actually I personally don't need Lucene to be "write once". The reason
>>>> why
>>>> I started this thread about the segments.gen file was that in our
>>>> project we
>>>> sometimes need to rollback to a previous commit-point (using Lucene
>>>> 2.4.0)
>>>> that we keep around with the SnapshotDeletionPolicy. To get rid of the
>>>> newest commit-point we simply delete the most recent segments file. Bu=
t
>>>> then
>>>> we also have to delete the segments.gen file, otherwise Lucene will re=
ad
>>>> the
>>>> generation from it and try to find the segments file we deleted. Then
>>>> Lucene
>>>> will recreate the segments.gen file. This just made me think that this
>>>> is
>>>> not very clean (deleting and recreating the segments.gen) especially
>>>> because
>>>> we use a local FS and don't even need the .gen file.
>>>
>>> Ahh... OK. =C2=A0In trunk/2.9, you can explicitly open an IndexWriter o=
n a
>>> prior
>>> commit point, which will take care of the gen file for you.
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-dev-help@lucene.apache.org
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org