Thank you Christine. Yeah, JSON facet does not support specifying threads.
On Thu, Dec 10, 2020, 11:15 PM Christine Poerschke (BLOOMBERG/ LONDON) < cpoersc...@bloomberg.net> wrote: > Hello Arturas and Munendra! > > In the "Currently, JSON facets have support for specifying the number of > threads." sentence, I wonder if perhaps a "does not" got inadvertently > omitted i.e. "Currently, JSON facets does not have support for specifying > the number of threads." was intended? > > Let me share what I learnt from digging into the code: > > * "facet.threads" is for field value faceting [1] [2] but you're > interested in (JSON) field range faceting as well as JSON field value > faceting. > > * The area of the code [3] that does the JSON field range faceting shows > no obvious threading or parallelisation. > > Hope that helps? > > Regards, > > Christine > > [1] > https://lucene.apache.org/solr/guide/8_7/faceting.html#field-value-faceting-parameters > [2] > https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.7.0/solr/core/src/java/org/apache/solr/request/SimpleFacets.java > [3] > https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.7.0/solr/core/src/java/org/apache/solr/search/facet/FacetRangeProcessor.java#L112-L113 > > From: solr-user@lucene.apache.org At: 12/03/20 22:47:35To: > solr-user@lucene.apache.org > Subject: Re: increasing number of threads for faceting in JSON format > > Hi Munedra, > > This is great that I can get things faster by reducing the gap and by > increasing the number of threads. How to reduce gaps I know: one can > replace "gap": "+1HOUR" with "gap": "+1MONTH" What should I change > in the text below to increase the number of threads from one to 20? > > Cheers, > Arturas > > On Thu, Dec 3, 2020 at 1:54 PM Munendra S N <sn.munendr...@gmail.com> > wrote: > > > Hi, > > > > Currently, JSON facets have support for specifying the number of threads. > > In the above request, the range facet is computed over 2 years with a gap > > of 1 hour. By reducing the number of buckets, computation should become > > much faster > > > > Regards, > > Munendra S N > > > > > > > > On Thu, Dec 3, 2020 at 1:52 PM Arturas Mazeika <maze...@gmail.com> > wrote: > > > > > Hi Solr-Users, > > > > > > I am trying to better understand the solr capabilities, how one can > > > formulate queries in JSON format as well as tweak parameters. > Currently I > > > have a logs collection (ca 6GB large) with a dozen of attributes > running > > in > > > single server mode (F:\solr_deployment\solr-8.7.0\bin\solr.cmd start -h > > > localhost -p 5555 -m 4g) > > > > > > I am playing with faceting functionality in solr and query a couple of > > > attributes there. My typical query is: > > > > > > GET http://localhost:5555/solr/db/query > > > <http://arteika:5555/solr/logan/query> HTTP/1.1 > > > content-type: application/json > > > > > > { > > > "query" : "*:*", > > > "limit" : 0, > > > "facet": { > > > "t" : { > > > "type": "terms", > > > "field": "fcomp", > > > "sort": "index", > > > > > > "facet": { > > > "t_buckets": { > > > "type": "range", > > > "field": "t", > > > "sort": { "t": "asc" }, > > > "start": "2018-05-02T17:00:00.000Z", > > > "end": "2020-11-16T21:00:00.000Z", > > > "gap": "+1HOUR" > > > } > > > } > > > }, > > > } > > > } > > > > > > not surprisingly, it takes a bit to compute the result, so I tried to > > > increase the number of threads. How do I do it in JSON format? I tried > > > adding > > > > > > { > > > "params": { > > > "facet.threads": 8 > > > }, > > > "query" : "*:*", > > > ... > > > } > > > > > > and checked the jstack <pid> of the solr java process, but I still see > > only > > > one thread working. Can I configure params through the params section? > > > > > > I also tried > > > > > > { > > > "query" : "*:*", > > > "limit" : 0, > > > "facet": { > > > "t" : { > > > "type": "terms", > > > "field": "fcomp", > > > "sort": "index", > > > > > > "facet": { > > > "t_buckets": { > > > "type": "range", > > > "field": "t", > > > "sort": { "t": "asc" }, > > > "start": "2018-05-02T17:00:00.000Z", > > > "end": "2020-11-16T21:00:00.000Z", > > > "gap": "+1HOUR" > > > } > > > }, > > > "threads":8 > > > }, > > > } > > > } > > > > > > but this ran in one thread as well. Can I influence the number of > threads > > > in the "facet" section of JSON? > > > > > > Cheers, > > > Arturas > > > > > > > >
