: In order to support faceting, Solr maintains a cache of the faceted : field. You need one cache for each field you are faceting on, meaning : your memory requirements will be substantial, unless, I guess, your
1) you can consider trading ram for time by using "facet.method=enum" (and disabling your filterCache) ... it will prevent the need for hte FieldCaches but will probably be slower as it will compute the docset per value per field instead of generating the FieldCaches once and re-useing them. 2) the entire question seems suspicious... : > We have configured solr for 5000 facet fields as part of request : > handler.We : > have 10811177 docs in the index. ...i have lots of experience dealing with indexes that had thousands of fields that were faceted on, but i've never seen any realistic usecase for faceting on more then a few hundred fields per search. Can you please elaborate on your goals and usecases so we can offer better advice... https://people.apache.org/~hossman/#xyproblem XY Problem Your question appears to be an "XY Problem" ... that is: you are dealing with "X", you are assuming "Y" will help you, and you are asking about "Y" without giving more details about the "X" so that we can understand the full issue. Perhaps the best solution doesn't involve "Y" at all? See Also: http://www.perlmonks.org/index.pl?node_id=542341 -Hoss
