On Tue, 2014-11-18 at 14:42 +0100, Per Steffensen wrote:

> Doc-values is a valid approach for us, but currently our id-field is
> unfortunately not doc-value - at it is not easy for us to just
> re-index all documents with id as doc-value.

At Lucene/Solr Revolution 2014 I presented that exact problem at Stump
the Chump. After stalling for a minute with obligatory derogatory
comments on our project design and a just at obligatory car analogy, he
pointed me in the direction of a filtered index reader and asked me to
code it and make it Open Source.

Thomas Egense and I plan to take a crack at it one of these days. If the
field is stored, it should be possible to make it DocValued by
optimizing the index with a custom reader.

> Besides that, our solution is diagonal on a field-cache/doc-values
> solution in the way that one does not prevent the other, and if you do
> one of them you will still be able to benefit from doing the other
> one.

I noticed that. Multiplying solutions are awesome.

- Toke Eskildsen, State and University Library, Denmark



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