lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Michael McCandless <luc...@mikemccandless.com>
Subject Re: Can I run Lucene in google app engine?
Date Mon, 13 Apr 2009 10:11:00 GMT
Yes, I believe so (we have a unit test asserting this).

But, there's no guarantee of cross-version compatibility of the serialized form.

Mike

2009/4/13 Noble Paul നോബിള്‍  नोब्ळ् <noble.paul@gmail.com>:
> 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?
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> 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
>>
>>
>
>
>
> --
> --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


Mime
View raw message