Release 3.22.01.5

Release Notes:

We have released a bug-fixed version 3.22.01.5.

Bug-fixes:

• Improve the logic of getting connections from connection pool
• Handle the semi-connection scenario when the backend connection is initialized
• In some scenarios, when executing a large package statement, hang, Lost connection...
• Support update/delete shardingTable with join globalTable
• After the master-slave switch, the 8066 side opens the transaction for rollback and some data is not rolled back
• When executing load data, Lost connection... and other errors occur
• Fix some NPE issues

发行说明：

我们发布了3.22.01.5,这是个基于3.22.01.4的bug修复版本

问题修复:

• 改善从连接池中获取连接的逻辑
• 后端连接初始化时出现半连接场景的处理
• 某些场景下执行大包语句出现hang、Lost connection...
• 支持update/delete多表针对分片表join全局表
• 主从切换后，业务端开启事务进行rollback时，部分数据没有被回滚
• 执行load data出现Lost connection...和其他报错
• 解决一些NPE问题