Thanks Bill. Couple of questions, 1) Would the function query load all unique terms (for that field) in memory the way sort (field cache) does? If so, that wouldn't work for us as we can have over 5 billion records spread across multiple shards (up to 10 indexer instances), that would surely kill the process if it were to load everything in memory.
2) Would the function query work on multi-shard query? For ex., recip(rord(creationDate),1,1000,1000) would it automatically do the function on the combined result from all the shards or would it run on individual shard and get results from them? I would still be interested in knowing if Solr supports Sort.IndexOrder - if so, how? Thanks, -vivek On Thu, Jul 9, 2009 at 8:27 PM, Bill Au<bill.w...@gmail.com> wrote: > With a time stamp you can use a function query to boost the score of newer > documents: > http://wiki.apache.org/solr/SolrRelevancyFAQ#head-b1b1cdedcb9cd9bfd9c994709b4d7e540359b1fd > > Bill > > On Thu, Jul 9, 2009 at 5:58 PM, vivek sar <vivex...@gmail.com> wrote: > >> How do we sort by internal doc id (say on one index only) using Solr? >> I saw couple of threads saying it (Sort.INDEXORDER) was not supported >> in Solr, >> >> >> http://www.nabble.com/sort-by-index-id-descending--td16124009.html#a16124009 >> >> http://www.nabble.com/Reverse-sorting-by-index-order-td1321032.html#a1321032 >> >> Has the index order support been added in Solr 1.4? How do we use that >> - any documentation? >> >> Thanks, >> -vivek >> >> On Thu, Jul 9, 2009 at 2:21 PM, Otis >> Gospodnetic<otis_gospodne...@yahoo.com> wrote: >> > >> > Ah, with multiple indices you can't rely on the max Lucene doc Id. I >> think you have to do with the timestamp approach. >> > >> > Otis >> > -- >> > Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch >> > >> > >> > >> > ----- Original Message ---- >> >> From: vivek sar <vivex...@gmail.com> >> >> To: solr-user@lucene.apache.org >> >> Sent: Thursday, July 9, 2009 1:13:54 PM >> >> Subject: Re: Boosting for most recent documents >> >> >> >> Thanks Otis. I got a distributed index - using Solr multi-core. >> >> Basically, I got 6 indexer instances running on 3 different boxes. >> >> Couple of questions, >> >> >> >> 1) Is it possible to sort on document id for multiple-shards? How is >> that done? >> >> 2) How would boost by most recent doc at index time? >> >> >> >> Thanks, >> >> -vivek >> >> >> >> >> >> >> >> On Wed, Jul 8, 2009 at 7:47 PM, Otis >> >> Gospodneticwrote: >> >> > >> >> > Sort by the internal Lucene document ID and pick the highest one. >> That might >> >> do the job for you. >> >> > >> >> > Otis >> >> > -- >> >> > Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch >> >> > >> >> > >> >> > >> >> > ----- Original Message ---- >> >> >> From: vivek sar >> >> >> To: solr-user >> >> >> Sent: Wednesday, July 8, 2009 8:34:16 PM >> >> >> Subject: Boosting for most recent documents >> >> >> >> >> >> Hi, >> >> >> >> >> >> I'm trying to find a way to get the most recent entry for the >> >> >> searched word. For ex., if I have a document with field name "user". >> >> >> If I search for user:vivek, I want to get the document that was >> >> >> indexed most recently. Two ways I could think of, >> >> >> >> >> >> 1) Sort by some time stamp field - but with millions of documents >> this >> >> >> becomes a huge memory problem as we have seen OOM with sorting before >> >> >> 2) Boost the most recent document - I'm not sure how to do this. >> >> >> Basically, we want to have the most recent document score higher than >> >> >> any other and then we can retrieve just 10 records and sort in the >> >> >> application by time stamp field to get the most recent document >> >> >> matching the keyword. >> >> >> >> >> >> Any suggestion on how can this be done? >> >> >> >> >> >> Thanks, >> >> >> -vivek >> >> > >> >> > >> > >> > >> >
