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From Noble Paul നോബിള്‍ नोब्ळ् <noble.p...@gmail.com>
Subject Re: Can I run Lucene in google app engine?
Date Mon, 13 Apr 2009 10:01:46 GMT
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 നോബിള്‍  नोब्ळ् <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 scalable
>>>> Luceen usage. However, it depends on your requirement.
>>>>
>>>> 1) You can not write index on disk, but you can read files. So theoretically
>>>> if the index is read-only and small, you can package it with the war file.
>>> I can probably write the whole index as  Blob and read it and serve
>>> 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 with
>>>> Google's data store, just like store an index into databases. Sure it'll
>>>> work. But performance would suffer because of transferring the whole index
>>>> into memory, then really start searching. On the other hand, this could 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 maintain
>>>> 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 disallows
>>>
>>>>
>>>> --
>>>> 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=Create_Lucene_Database_Search_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 it?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> --Noble Paul
>>>
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>>>
>>>
>>
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>>
>>
>
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>
>



-- 
--Noble Paul

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