Full text indexing in NoSQL databases has been addressed so far only by Riak search, the others relying on integrations with Lucene, Solr, or ElasticSearch.
With merged dev, there is now a single set of committers across both projects. Everyone in both communities can now drive releases – so when Solr releases, Lucene will also release – easing concerns about releasing Solr on a development version of Lucene. So now, Solr will always be on the latest trunk version of Lucene and code can be easily shared between projects – Lucene will likely benefit from Analyzers and QueryParsers that were only available to Solr users in the past. Lucene will also benefit from greater test coverage, as now you can make a single change in Lucene and run tests for both projects – getting immediate feedback on the change by testing an application that extensively uses the Lucene libraries. Both projects will also gain from a wider development community, as this change will foster more cross pollination between Lucene and Solr devs (now just Lucene/Solr devs).
Hopefully NoSQL databases will benefit from this merge too, by having a more solid product to rely on.
Original title and link: Lucene and Solr Development Merged (NoSQL databases © myNoSQL)