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.p...@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 > <luc...@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 >> <erdincyilma...@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.p...@gmail.com>: >>>> On Mon, Apr 13, 2009 at 1:10 PM, Chris Lu <chris...@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-unsubscr...@lucene.apache.org >>>>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> --Noble Paul >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>>> >>>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>> >>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > > > > -- > --Noble Paul > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org