张月祥 [zhan...@calis.edu.cn] wrote: > Could anybody tell us some internals about "Too many values for > UnInvertedField faceting on field xxx" ?
I must admit I do not fully understand it in detail, but it is a known problem with Field Cache (facet.method=fc) faceting. The remedy is to use DocValues, which does not have the same limitation. This should also result in lower heap usage. You will have to re-index everything though. We have successfully used DocValues on an index with 400M documents and 300M unique values on a single facet field. - Toke Eskildsen
