I haven't looked at this in depth (big disclaimer there!) but I *suspect* if I looked closer, I would find that ExportWriter was engineered/designed around the assumptions of DocValues -- chiefly that data is first organized by field then document. But stored fields are separated first. The access pattern and thus performance might suffer a lot, if true. Some parts of Solr like simply returning normal search results and even highlighting have tried to navigate that balancing act.
On Mon, Nov 17, 2025 at 11:02 AM Luke Kot-Zaniewski (BLOOMBERG/ 919 3RD A) < [email protected]> wrote: > Hi All, > > I've come to enjoy Solr's streaming support with export writer very much, > so when I ran into a case where I needed to extract non-dv stored fields > I was motivated to equip ExportWriter with this power. I have a patch that > does this, or at least appears to do this. I would be happy to share but > wanted to gauge interest and solicit any opinions on the mailing list > first. > I realize DVs are usually better but this is in case you don't have DVs. > > Thanks, > Luke > >
