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 > > >
