If you are asking to read from a file for warm up and if there is not a capability for what you want I can open a Jira issue and send a patch.
2013/10/7 user 01 <user...@gmail.com> > what's the way to warm up filter queries for a category field with 1000 > possible values. Would I need to write 1000 lines manually in the > solrconig.xml or what is the format? >