i have been testing locallucene with our data for the last couple of days. one issue i faced with it is during when using geo sorting is that it seems to eat up all the memory, however big and become progressively slower, finally after several requests (10 or so in my case) it throws up a java.lang.OutOfMemoryError: Java heap space error.
is there a way to get around this? -----Original Message----- From: Jon Pierce [mailto:[EMAIL PROTECTED] Sent: 28 September 2007 15:48 To: solr-user@lucene.apache.org Subject: Re: custom sorting Is the machinery in place to do this now (hook up a function query to be used in sorting)? I'm trying to figure out what's the best way to do a distance sort: custom comparator or function query. Using a custom comparator seems straightforward and reusable across both the standard and dismax handlers. But it also seems most likely to impact performance (or at least require the most work/knowledge to get right by minimizing calculations, caching, watching out for memory leaks, etc.). (Speaking of which, could anyone with more Lucene/Solr experience than I comment on the performance characteristics of the locallucene implementation mentioned on the list recently? I've taken a first look and it seems reasonable to me.) Using a function query, as Yonik suggests above, is another approach. But to get a true sort, you have to boost the original query to zero? How does this impact the results returned by the original query? Will the requirements (and boosts) of the original (now nested) query remain intact, only sorted by the function? Also, is there any way to do this with the dismax handler? Thanks, - Jon On 9/27/07, Yonik Seeley <[EMAIL PROTECTED]> wrote: > On 9/27/07, Erik Hatcher <[EMAIL PROTECTED]> wrote: > > Using something like this, how would the custom SortComparatorSource > > get a parameter from the request to use in sorting calculations? > > perhaps hook in via function query: > dist(10.4,20.2,geoloc) > > And either manipulate the score with that and sort by score, > > q=+(foo bar)^0 dist(10.4,20.2,geoloc) > sort=score asc > > or extend solr's sorting mechanisms to allow specifying a function to sort by. > > sort="dist(10.4,20.2,geoloc) asc" > > -Yonik > This email is confidential and may also be privileged. If you are not the intended recipient please notify us immediately by telephoning +44 (0)20 7452 5300 or email [EMAIL PROTECTED] You should not copy it or use it for any purpose nor disclose its contents to any other person. Touch Local cannot accept liability for statements made which are clearly the sender's own and are not made on behalf of the firm. Touch Local Limited Registered Number: 2885607 VAT Number: GB896112114 Cardinal Tower, 12 Farringdon Road, London EC1M 3NN +44 (0)20 7452 5300
