Have done my first work on #BioSolr in several years this week, adding a distributed search option to xjoin.
If anyone who knows Solr SearchComponent better than me wants to review the PR before I merge it, I'd be appreciative - I'm not sure this is the best approach. https://github.com/flaxsearch/BioSolr/pull/49
#48: Add distributed xjoin handling. by mattflax · Pull Request #49 · flaxsearch/BioSolr
A project aiming "to significantly advance the state of the art with regard to indexing and querying biomedical data with freely available open source software" - #48: Add distributed xjoin handling. by mattflax · Pull Request #49 · flaxsearch/BioSolr