Hi, Solr is running on top of Lucene and as far as I know Lucene knows only one approach how to update the document field content: that is delete first and then (re)index with new values. However, saying this it does not mean you can not implement what you need. Take a look at ParallelReader API http://lucene.apache.org/java/3_0_1/api/all/org/apache/lucene/index/ParallelReader.html
I am not sure if this functionality is directly exposed via Solr API. Try digging mail lists (search-lucene.com or lucidimagination.com can be of good help while you can narrow search to Solr only: http://search-lucene.com/?q=ParallelReader&fc_project=Solr or http://www.lucidimagination.com/search/?q=ParallelReader#/p:solr). For example the following mail thread seems to be relevant: http://search-lucene.com/m/iT2hMvtDt5 (though it is bit dated) Do you really use only one physical index for all auctions? If yes then you might consider using ParallelReader but if the index is large then I am not sure about the performance. If you are planning to partition your index then it can get more complex but faster. Regards, Lukas On Wed, Mar 17, 2010 at 9:49 AM, Moritz Mädler <m...@moritz-maedler.de>wrote: > Hi List, > > we are running a marketplace which has about a comparable functionality > like ebay (auctions, fixed-price items etc). > The items are placed on the market by users who want to sell their goods. > > Currently we are using Sphinx as an indexing engine, but, as Sphinx returns > only document ids we have to make a > database-query to fetch the data to display. This massively decreases > performance as we have to do two requests to > display data. > > I heard that Solr is able to return a complete dataset and we hope a switch > to Solr can boost perfomance. > A critical question is left and i was not able to find a solution for it in > the docs: Is it possible to update attributes directly in the > index? > An example for better illustration: > We have an index which holds all the auctions (containing auctionid, > auction title) with its current prices(field: current_price). When a user > places a new bid, > is it possible to update the attribute 'current_price' directly in the > index so that we can fetch the current_price from Solr and not from the > database? > > I hope you understood my problem. It would be kind if someone can point me > to the right direction. > > Thanks alot! > > Moritz
