WARNING: This is exceptionally RAM intensive: it makes no effort to compress the postings data, storing terms as separate byte[] and postings as separate int[], but as a result it gives substantial increase in search performance.
This postings format supports TermsEnum#ord and TermsEnum#seekExact(long).
Because this holds all term bytes as a single byte[], you cannot have more than 2.1GB worth of term bytes in a single segment. @lucene.experimental