Apache Jackrabbit Oak 1.5.12 发布了，Oak 是一个可伸缩、高性能分层次的内容资源库。这是 Jackrabbit 的子项目之一。
更新内容如下：
技术任务
[OAK-4885] - RDB*Store: update mysql JDBC driver reference to 5.1.40
[OAK-4905] - RDB*Store: update postgresql JDBC driver reference to 9.4.1211
Bug修复
[OAK-4082] - RDBDocumentStore on MySQL may fail when using useServerPrepStmts=true
[OAK-4828] - oak-ugrade tests fail with segment tar 0.0.12 (on Windows)
[OAK-4894] - Potential NPE in Commit.apply()
[OAK-4909] - NRTIndex can get closed while in use
改进
[OAK-4816] - Property index: cost estimate with path restriction is too optimistic
[OAK-4890] - Invalidate cache on missing previous document
[OAK-4892] - Speed up DocumentNodeStoreStatsCollectorIT
[OAK-4904] - For unique indexes avoid consulting indexes other than property index
[OAK-4910] - Update segment tar to 0.0.14
新特性
[OAK-4265] - XPath: support limited form of "union"
[OAK-4522] - Improve CommitRateLimiter to optionally block some commits
任务
[OAK-4823] - Upgrade Oak Segment Tar dependency to 0.0.12
[OAK-4889] - Update Oak trunk to Jackrabbit 2.13.4
下载地址：
http://jackrabbit.apache.org/downloads.html
来自:开源中国社区
