I will try out source: :query, thanks. In terms of last_job_application, it doesn't use an ORDER, there is a last_job_application_id foreign key on the model.
On Thursday, July 18, 2013 2:16:03 PM UTC-4, Pat Allan wrote: > > Hi Daniel > > As for this issue: the short answer is I'm not entirely sure the index > definition will always give you the results you're after. Although you do > seem to be using MySQL, and that can be a little carefree with its approach > to SQL results. > > You're asking for the 'last job application' - but ORDER clauses can't > apply to joins, and so there's no guarantee that the job application in > question for the three attributes is the 'last' one. > > That said, a potential work-around: change the new attribute definition so > it's in a separate query: > > has job_applications.job_id, as: :job_ids, facet: true, source: :query > > That should remove the second join - and while it will involve a separate > query, it may perform much better that way. > > Give it a shot. > > -- > Pat > > On 18/07/2013, at 12:59 AM, Daniel Vandersluis wrote: > > > Index: > > > > define_index do > > indexes 'TRIM(LOWER(first_name))', as: :first_name, :sortable => > true > > indexes 'TRIM(LOWER(last_name))', as: :last_name, :sortable => true > > indexes email, :sortable => true > > indexes resumes.document, :as => "document", :sortable => true > > > > has :id, :as => :user_id > > has client_id > > has updated_at > > has is_internal > > > > has location.country_id, as: "country_id", facet: true > > has location.state_id, as: "state_id" > > has location.city_id, as: "city_id" > > has 'RADIANS(locations.latitude)', as: :lat, type: :float > > has 'RADIANS(locations.longitude)', as: :lng, type: :float > > > > has last_job_application.source.source_type_id, as: "source_type_id" > > has last_job_application.source_id, as: "source_id", facet: true > > has last_job_application.application_status_id, as: > "application_status_id" > > > > has tags(:id), as: "tag_ids", facet: true > > has profiles(:profile_type_id), as: "profile_type_ids", facet: true > > has job_applications(:job_id), as: "job_ids", facet: true # THIS IS > THE NEW ATTRIBUTE !!! > > > > has candidate_answers(:answer_id), as: "candidate_answer_ids" > > > > set_property latitude_attr: "lat" > > set_property longitude_attr: "lng" > > > > # By default due to our has many relationship with resumes > documents, MySQL only returns > > # the first 1024 characters of the document. This enforces the size > during indexing. > > set_property group_concat_max_len: 500000 > > end > > > > Models: > > > > class User < ActiveRecord::Base > > belongs_to :last_job_application, class_name: > 'JobApplication' > > has_many :resumes > > has_many :job_applications, dependent: :destroy, > autosave: true > > has_many :candidate_answers, through: :job_applications > > has_many :candidate_profiles, dependent: :delete_all > > has_many :candidate_tags_candidate_users > > has_many :candidate_tags, through: > :candidate_tags_candidate_users, source: :candidate_tag, dependent: > :delete_all > > end > > > > class JobApplication < ActiveRecord::Base > > belongs_to :user > > belongs_to :application_status > > belongs_to :job, counter_cache: true > > belongs_to :source > > end > > > > Please let me know if there's any other model you'd like to see, thanks! > > > > On Tuesday, July 16, 2013 8:49:04 PM UTC-4, Pat Allan wrote: > > Can you show us the index definition and the related associations? > > > > On 17/07/2013, at 5:02 AM, Daniel Vandersluis wrote: > > > > > I did an explain query, like I said, all the joins are indexed (either > as primary keys or actual indexes). In both cases (before and after adding > the attribute), it takes milliseconds to execute the query, but a while > before all data has been collected. > > > > > > > +----+-------------+-----------------------------+--------+--------------------------------------------+--------------------------------------------+---------+------------------------------------------------+-------+-------------+ > > > > > | id | select_type | table | type | > possible_keys | key > | key_len | ref | > rows | Extra | > > > > +----+-------------+-----------------------------+--------+--------------------------------------------+--------------------------------------------+---------+------------------------------------------------+-------+-------------+ > > > > > | 1 | SIMPLE | users | index | NULL > | PRIMARY > | 4 | NULL | 23754 | > | > > > | 1 | SIMPLE | documents | ref | > index_documents_on_user_id | index_documents_on_user_id > | 5 | prod-2013-05-28.users.id | > 1 | | > > > | 1 | SIMPLE | locations | eq_ref | PRIMARY > | PRIMARY > | 4 | prod-2013-05-28.users.location_id | 1 | > | > > > | 1 | SIMPLE | job_applications | eq_ref | PRIMARY > | PRIMARY > | 4 | prod-2013-05-28.users.last_job_application_id | 1 | > | > > > | 1 | SIMPLE | sources | eq_ref | PRIMARY > | PRIMARY > | 4 | prod-2013-05-28.job_applications.source_id | 1 | > | > > > | 1 | SIMPLE | tags_users | ref | > index_tags_on_user_id | index_tags_on_user_id > | 5 | prod-2013-05-28.users.id | > 1 | | > > > | 1 | SIMPLE | tags | eq_ref | PRIMARY > | PRIMARY > | 4 | prod-2013-05-28.tags_users.tag_id | 1 | > Using index | > > > | 1 | SIMPLE | profiles | ref | > index_profiles_on_user_id_and_profile_type | > index_profiles_on_user_id_and_profile_type | 5 | > prod-2013-05-28.users.id | 1 | Using index | > > > | 1 | SIMPLE | job_applications_users | ref | > index_job_applications_on_user_id | > index_job_applications_on_user_id | 5 | > prod-2013-05-28.users.id | 1 | | > > > | 1 | SIMPLE | job_applications_users_join | ref | > index_job_applications_on_user_id | > index_job_applications_on_user_id | 5 | > prod-2013-05-28.users.id | 1 | Using index | > > > | 1 | SIMPLE | candidate_answers | ref | > uidx_on_candidate_answers | uidx_on_candidate_answers > | 5 | prod-2013-05-28.job_applications_users_join.id | > 8 | Using index | > > > > +----+-------------+-----------------------------+--------+--------------------------------------------+--------------------------------------------+---------+------------------------------------------------+-------+-------------+ > > > > > > > > The join is exactly the same except for the alias: > > > > > > LEFT OUTER JOIN `job_applications` `job_applications_users` > > > ON `job_applications_users`.`user_id` = `users`.`id` > > > LEFT OUTER JOIN `job_applications` `job_applications_users_join` > > > ON `job_applications_users_join`.`user_id` = `users`.`id` > > > > > > > > > > > > On Tuesday, July 16, 2013 2:12:02 PM UTC-4, Pat Allan wrote: > > > Hi Daniel > > > Any slowness in indexing is going to be related to the generated SQL > query - when you say the query itself seems fast, how are you comparing it? > I'd recommend running it through EXPLAIN to get some idea of what could be > causing it to be slow. > > > > > > Is there any way in which the join is different beyond the aliased > name? > > > > > > As for upgrading - I'm not sure if there's been any changes related to > query generation, but using the latest releases is always recommended (in > this case, 2.1.0). > > > > > > Cheers > > > > > > -- > > > Pat > > > > > > > > > On 17/07/2013, at 3:09 AM, Daniel Vandersluis wrote: > > > > > > > Is there any reason an index would suddenly take 3x as long to index > after adding an extra has_many attribute to the index definition? The query > itself is completely indexed, and takes about 1.5ms to run (plus data > collection time, there are about 200k records in the main table that is > being indexed, plus a bunch of attributes - sphinx reports it as a 466MB > index). Prior to adding the extra attribute, indexing took about 9 minutes, > and now it takes 29. The new attribute averages just over 1 record per row, > with a maximum of 78. > > > > > > > > Possibly related is that adding the new attribute causes the query > TS generates to add a duplicate join (with a different alias) to a join > that's added by a different attribute (however as mentioned the query > itself seems to be fast). > > > > > > > > I'm using ThinkingSphinx 2.0.11 currently - would updating to TS3 > help? > > > > > > > > -- > > > > You received this message because you are subscribed to the Google > Groups "Thinking Sphinx" group. > > > > To unsubscribe from this group and stop receiving emails from it, > send an email to [email protected]. > > > > To post to this group, send email to [email protected]. > > > > Visit this group at http://groups.google.com/group/thinking-sphinx. > > > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > You received this message because you are subscribed to the Google > Groups "Thinking Sphinx" group. > > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected]. > > > To post to this group, send email to [email protected]. > > > Visit this group at http://groups.google.com/group/thinking-sphinx. > > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > > > > > > > > > -- > > You received this message because you are subscribed to the Google > Groups "Thinking Sphinx" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] <javascript:>. > > To post to this group, send email to > > [email protected]<javascript:>. > > > Visit this group at http://groups.google.com/group/thinking-sphinx. > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > > -- You received this message because you are subscribed to the Google Groups "Thinking Sphinx" group. 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