RethinkDB 2.1.5 发布，此版本主要是 bug 修复：
兼容性
RethinkDB 2.1.5 servers cannot be mixed with servers running RethinkDB 2.1.4 or earlier in the same cluster
Bug 修复
Fixed a memory corruption bug that caused segmentation faults on some systems (#4917)
Made the build system compatible with OS X El Capitan (#4602)
Fixed spurious "Query terminated by rethinkdb.jobs table" errors (#4819)
Fixed an issue that caused changefeeds to keep failing after a table finished reconfiguring (#4838)
Fixed a race condition that resulted in a crash with the messagestd::terminate() called without any exception. when losing a cluster connection (#4878)
Fixed a segmentation fault in the mark_ready() function that could occur when reconfiguring a table (#4875)
Fixed a segmentation fault when using changefeeds on orderBy.limit queries (#4850)
Made the Data Explorer handle changefeeds on orderBy.limit queries correctly (#4852)
Fixed a "Branch history is incomplete" crash when reconfiguring a table repeatedly in quick succession (#4866)
Fixed a problem that caused indexStatus to report results for additional indexes that were not specified in its arguments (#4868)
Fixed a segmentation fault when running RethinkDB on certain ARM systems (#4839)
Fixed a compilation issue in the UTF-8 unit test with recent versions of Xcode (#4861)
Fixed an Assertion failed: [ptr_] error when reconfiguring tables quickly with a debug-mode binary (#4871)
Improved the detection of unsupported values in r.js functions to avoid aGuarantee failed: [!key.IsEmpty() && !val.IsEmpty()] crash in the worker process (#4879)
Fixed an unitialized data access issue on shutdown (#4918)
性能改进
Improved the performance of getAll queries that fetch multiple keys at once (#1526)
Optimized the distribution of tasks across threads on multi-core servers (#4905)
下载：https://github.com/rethinkdb/rethinkdb/archive/v2.1.5-2.zip。
RethinkDB 设计用来存储 JSON 文档的分布式数据库，可通过简单操作实现多机分布式存储。支持表的联合和分组查询。
来自:开源中国社区
