...
- Faster top-level conjunctions on term queries when sorting by descending score.
- Change Postings back to using FOR in Lucene99PostingsFormat. Freqs, positions and offset keep using PFOR.
... plus a multitude of helpful bug fixes!
Further details of changes are available in the change log available at: http://lucene.apache.org/core/9_9_0/changes/Changes.html
...