OrientDB 2.2.9 发布了，Orient DB 是一个可伸缩的文档数据库，支持 ACID 事务处理。
主要改进如下：
Cannot save configuration on UI of related Nodes
isAuthorized() Exception: Can not close file with id 0 because it is still in use
NoClassDefFoundError on shutdown
OrientDB support in IBM Cloud
Long running application using OPartitionedDatabasePool causing a OTokenSecurityException: missing session and token
更多改进信息，可查看改进记录。