Release 3.21.10.14

Release Notes:

We have released a bug-fixed version 3.21.10.14.

Bug-fixes:

• Enable sql statistics, concurrent threads do not grab the lock and fall into an infinite loop, causing the cpu usage to be too high
• The expansion and contraction thread connection-pool-evictor-thread of the connection pool exits unexpectedly
• Improve the logic of fetching connections in the 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
• Too many slow logs blocked, resulting in heartbeat failure and connection creation failure

发行说明：

我们发布了3.21.10.14,这是个基于3.21.10.12的bug修复版本

问题修复:

• 开启sql统计，并发线程没有抢到锁陷入死循环引起cpu使用率过高
• 连接池的扩缩容线程connection-pool-evictor-thread意外退出
• 改善连接池中取连接的逻辑
• 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
• 慢日志过多阻塞，导致心跳失败、创建连接失败