David Smiley <david.w.smi...@gmail.com> wrote: > I don't think it makes a difference if some people think docValues should > never be used for value-retrieval. When that performance drop occurred > due to those changes, I'm sure it would have affected sorting & faceting > as well as value-retrieval. Some more than others perhaps.
Yes. The iterative API is fine for relatively small jumps, so it works perfectly for sorting on medium- to large result sets. Depending on the type of faceting it's the same. Grouping and faceting on small result sets is (probably) relatively affected, but as the amount of needed data is small in those cases, the (assumed) impact is not that high. Retrieving documents is different as there are typically more fields involved and the amount of documents itself is nearly always small, which means large jumps repeated for all the fields. > I don't see any disagreement about improving docValues in the ways > you suggest. You are right about that. I apologize if I was being unclear: It is not the concrete patch I am asking about, that's just how this started. I am asking for background on why it is considered misuse to use Doc Values for document retrieval. - Toke Eskildsen --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org
