: If you cannot do this for whatever reason, I vaguely remember someone
: posting a link to a program they'd put together to do this for a
: docValues field, you'd have to search the archives to find it.
It was Toke - he generated DocValues for an existing index by writing an
IndexReader Filter
My first recommendation, of course, would be to re-index the corpus
with a new field. If possible, frankly, that would probably be less
effort than trying to hack in an ID after the fact as well as not as
error-prone.
If you cannot do this for whatever reason, I vaguely remember someone
posting a
Hi all.
We had been going for the longest time abusing Lucene's doc IDs as our
own IDs and of course all our filters still work like this. But at the
moment, we're looking at ways to break our dependencies on this.
One of the motivators for this is the outright removal of FieldCache
in Lucene 5.
