Apache Lucene 3.6.2 发布了，这是一个 bugfix 版本，同时也有一些优化和提升，值得关注的有：
- Fixed ArrayIndexOutOfBoundsException when the in-memory terms index requires more than 2.1GB of RAM (billions of terms).
- Fixed a bug in contrib/queryparser's parsing of boolean queries.
- Fixed BooleanScorer2 to return the correct freq() when using the scorer visitor API.
- Fixed IndexWriter RAM accounting bug that would cause it to flush too early when using many different field names.
- Several other minor bugfixes: scoring bugs when using a custom coord(), a rare IndexWriter thread-safety issue, and fixes to the faceting and highlighting modules.