In order to use the Collapsing feature I will need to use Document Routing to co-locate related documents in the same shard in SolrCloud. What are the advantages and disadvantages of Document Routing?
Thanks, On Thu, Feb 11, 2016 at 12:54 PM, Joel Bernstein <[email protected]> wrote: > Yeah that would be the reason. If you want distributed unique capabilities, > then you might want to start testing out 6.0. Aside from SELECT DISTINCT > queries, you also have a much more mature Streaming Expression library > which supports the unique operation. > > Joel Bernstein > http://joelsolr.blogspot.com/ > > On Thu, Feb 11, 2016 at 12:28 PM, Brian Narsi <[email protected]> wrote: > > > Ok I see that Collapsing features requires documents to be co-located in > > the same shard in SolrCloud. > > > > Could that be a reason for duplication? > > > > On Thu, Feb 11, 2016 at 11:09 AM, Joel Bernstein <[email protected]> > > wrote: > > > > > The CollapsingQParserPlugin shouldn't have duplicates in the result > set. > > > Can you provide the details? > > > > > > Joel Bernstein > > > http://joelsolr.blogspot.com/ > > > > > > On Thu, Feb 11, 2016 at 12:02 PM, Brian Narsi <[email protected]> > > wrote: > > > > > > > I have tried to use the Collapsing feature but it appears that it > > leaves > > > > duplicated records in the result set. > > > > > > > > Is that expected? Or any suggestions on working around it? > > > > > > > > Thanks > > > > > > > > On Thu, Feb 11, 2016 at 9:30 AM, Brian Narsi <[email protected]> > > wrote: > > > > > > > > > I am using > > > > > > > > > > Solr 5.1.0 > > > > > > > > > > On Thu, Feb 11, 2016 at 9:19 AM, Binoy Dalal < > [email protected] > > > > > > > > wrote: > > > > > > > > > >> What version of Solr are you using? > > > > >> Have you taken a look at the Collapsing Query Parser. It basically > > > > >> performs > > > > >> the same functions as grouping but is much more efficient at doing > > it. > > > > >> Take a look here: > > > > >> > > > > >> > > > > > > > > > > https://cwiki.apache.org/confluence/display/solr/Collapse+and+Expand+Results > > > > >> > > > > >> On Thu, Feb 11, 2016 at 8:44 PM Brian Narsi <[email protected]> > > > wrote: > > > > >> > > > > >> > I am trying to select distinct records from a collection. (I > need > > > > >> distinct > > > > >> > name and corresponding id) > > > > >> > > > > > >> > I have tried using grouping and group format of simple but that > > > takes > > > > a > > > > >> > long time to execute and sometimes runs into out of memory > > > exception. > > > > >> > Another limitation seems to be that total number of groups are > not > > > > >> > returned. > > > > >> > > > > > >> > Is there another faster and more efficient way to do this? > > > > >> > > > > > >> > Thank you > > > > >> > > > > > >> -- > > > > >> Regards, > > > > >> Binoy Dalal > > > > >> > > > > > > > > > > > > > > > > > > > >
