Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: java-user@lucene.apache.org
Received-SPF: pass (nike.apache.org: domain of noble.paul@gmail.com designates
 209.85.132.250 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to
         :content-type:content-transfer-encoding;
        b=N9o2jyB0d/Bz735oJu+bpolM5nqGq8m3OllHRQlBsgWovzUKEAO6yeslWXsjy3YK69
         M8p7UTY0tqjt+gaPxLIBVfAoj+PzrYrG2rE7+3fy/iifm7FfffyivC84X4Jn2SIRnL8Y
         ccr6qNaTZ45HPh50+V/BQr7LtscWXK42KH7q0=
MIME-Version: 1.0
In-Reply-To: <9ac0c6aa0904130259g131c1a71k5dc55fd7179d67c2@mail.gmail.com>
References: <5e76b0ad0904122121le52a338q74d97224fe0356a2@mail.gmail.com>
	<49E2EC68.7060104@gmail.com>
 <5e76b0ad0904130116j4c3e356oe16ad234d6948a26@mail.gmail.com>
	<7af3bac90904130220m29b0a6c9w466d4ff8bdf4bec4@mail.gmail.com>
	<9ac0c6aa0904130259g131c1a71k5dc55fd7179d67c2@mail.gmail.com>
From: 
 =?UTF-8?B?Tm9ibGUgUGF1bCDgtKjgtYvgtKzgtL/gtLPgtY3igI0gIOCkqOCli+CkrOCljeCks+CljQ==?=
 <noble.paul@gmail.com>
Date: Mon, 13 Apr 2009 15:31:46 +0530
Message-ID: <5e76b0ad0904130301v2365f9ffn7277f45f47ff3ff0@mail.gmail.com>
Subject: Re: Can I run Lucene in google app engine?
To: java-user@lucene.apache.org
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

that is great.

Is it possible to serialize and deserialize a RAMDirectory?

--Noble


On Mon, Apr 13, 2009 at 3:29 PM, Michael McCandless
<lucene@mikemccandless.com> wrote:
> Lucene's ConcurrentMergeScheduler spawns threads, but you can switch
> that to SerialMergeScheduler which does not use threads.
>
> Some optional classes (FilterManager, ParallelMultiSearcher,
> TimeLimitedCollector) spawn threads, but presumably you could avoid
> them.
>
> Otherwise Lucene doesn't create its own threads.
>
> Mike
>
> On Mon, Apr 13, 2009 at 5:20 AM, Erdinc Yilmazel
> <erdincyilmazel@gmail.com> wrote:
>> I looked at the lucene source code out of curiosity to see if it
>> spawns threads in indexing/searching and saw that it does. Are you
>> sure it is going to work even if the index is read only?
>>
>> Erdinc
>>
>> 2009/4/13 Noble Paul =E0=B4=A8=E0=B5=8B=E0=B4=AC=E0=B4=BF=E0=B4=B3=E0=B5=
=8D=E2=80=8D =C2=A0=E0=A4=A8=E0=A5=8B=E0=A4=AC=E0=A5=8D=E0=A4=B3=E0=A5=8D <=
noble.paul@gmail.com>:
>>> On Mon, Apr 13, 2009 at 1:10 PM, Chris Lu <chris.lu@gmail.com> wrote:
>>>> Surely it's possible, but it has too much limitations to prevent a sca=
lable
>>>> Luceen usage. However, it depends on your requirement.
>>>>
>>>> 1) You can not write index on disk, but you can read files. So theoret=
ically
>>>> if the index is read-only and small, you can package it with the war f=
ile.
>>> I can probably write the whole index as =C2=A0Blob and read it and serv=
e
>>> the index from RAM. This index can be loaded once in the start time
>>> and i can setup a cron task to see if it got updated
>>>>
>>>> 2) If you need to update the index, you will have to store the index w=
ith
>>>> Google's data store, just like store an index into databases. Sure it'=
ll
>>>> work. But performance would suffer because of transferring the whole i=
ndex
>>>> into memory, then really start searching. On the other hand, this coul=
d be a
>>>> good solution for small index with per-user data.
>>> as you said this is a solution if the index size is small
>>>
>>>>
>>>> 3) For large changing indexes, you need to find other solutions to mai=
ntain
>>>> lucene index.
>>>>
>>>> My personal opinion is, finding a $20/month VPS hosting is far easier =
than
>>>> changing the way to code.
>>>
>>> The point is ,does Lucens use threads internally which the sandbox disa=
llows
>>>
>>>>
>>>> --
>>>> Chris Lu
>>>> -------------------------
>>>> Instant Scalable Full-Text Search On Any Database/Application
>>>> site: http://www.dbsight.net
>>>> demo: http://search.dbsight.com
>>>> Lucene Database Search in 3 minutes:
>>>> http://wiki.dbsight.com/index.php?title=3DCreate_Lucene_Database_Searc=
h_in_3_minutes
>>>> DBSight customer, a shopping comparison site, (anonymous per request) =
got
>>>> 2.6 Million Euro funding!
>>>>
>>>>
>>>> Noble Paul ??????? ?????? wrote:
>>>>>
>>>>> Is it possible to run Lucene in google app engine? has anyone tried i=
t?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
>>>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> --Noble Paul
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
>>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>


--=20
--Noble Paul

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