Re: Setting group.ngroups=true considerable slows down queries

2011-12-12 Thread Martijn v Groningen
I'd not make a subtaks onder SOLR-236 b/c it is related to a completely different implementation which was never committed. SOLR-2205 is related to general result grouping and think should be closed. I'd make a new issue for improving the performance of group.ngroups=true when there are a lot of un

Re: Setting group.ngroups=true considerable slows down queries

2011-12-12 Thread Michael Jakl
Hi! On Mon, Dec 12, 2011 at 13:57, Martijn v Groningen wrote: > As as I know currently there isn't another way. Unfortunately the > performance degrades badly when having a lot of unique groups. > I think an issue should be opened to investigate how we can improve this... > > Question: Does Solr

Re: Setting group.ngroups=true considerable slows down queries

2011-12-12 Thread Martijn v Groningen
Hi! As as I know currently there isn't another way. Unfortunately the performance degrades badly when having a lot of unique groups. I think an issue should be opened to investigate how we can improve this... Question: Does Solr have a decent chuck of heap space (-Xmx)? Because grouping requires

Re: Setting group.ngroups=true considerable slows down queries

2011-12-09 Thread Michael Jakl
Hi! On Fri, Dec 9, 2011 at 17:41, Martijn v Groningen wrote: > On what field type are you grouping and what version of Solr are you > using? Grouping by string field is faster. The field is defined as follows: Grouping itself is quite fast, only computing the number of groups seems to increase

Re: Setting group.ngroups=true considerable slows down queries

2011-12-09 Thread Martijn v Groningen
Hi Micheal, On what field type are you grouping and what version of Solr are you using? Grouping by string field is faster. Martijn On 9 December 2011 12:46, Michael Jakl wrote: > Hi, I'm using the grouping feature of Solr to return a list of unique > documents together with a count of the dupl

Setting group.ngroups=true considerable slows down queries

2011-12-09 Thread Michael Jakl
Hi, I'm using the grouping feature of Solr to return a list of unique documents together with a count of the duplicates. Essentially I use Solr's signature algorithm to create the "signature" field and use grouping on it. To provide good numbers for paging through my result list, I'd like to comp