On Thu, 2013-03-21 at 09:57 +0100, Per Steffensen wrote: > Thanks Toke! Can you please elaborate a little bit? How to use it? What > it is supposed to do for you?
Sorry, no, I only know about it on the abstract level. The release notes for Solr 4.2 says * DocValues have been integrated into Solr. DocValues can be loaded up a lot faster than the field cache and can also use different compression algorithms as well as in RAM or on Disk representations. Faceting, sorting, and function queries all get to benefit. How about the OS handling faceting and sorting caches off heap? No more tuning 60 gigabyte heaps? How about a snappy new per segment DocValues faceting method? Improved numeric faceting? Sweet. Spending 5 minutes searching on how to activate the new powers did not get me much; my Google-fu is clearly not strong enough. The example schema shows that docValues="true" is a valid attribute for "StrField, UUIDField and all Trie*Fields", but I do not know if they are used automatically by sort or if they should be requested explicitly. Regards, Toke Eskildsen
