Release 3.21.02.2

Release Notes:

We have released a bug-fixed version 3.21.02.2.

Bug-fixes:

• Complicated query may lead to threads leak.
• Open the slow log, dble may appear oom.
• Check table consistency problem.
• The order of com_stmt_prepare returned message is wrong in read-write separation.
• set autocommit did not perform as expected.
• Occasionally ArrayIndexOutOfBoundException.
• fix sql statistics problem.
• The transcation fail problem when using RW-Split.

发行说明：

我们发布了3.21.02.2,这是个基于3.21.02.1的bug修复版本

问题修复:

• 复杂查询可能导致的线程泄漏
• 开着慢日志，dble可能会出现oom。
• 检查表一致性问题
• 读写分离中com_stmt_prepare 返回报文次序错误
• set autocommit 未按照预期执行
• 偶现的ArrayIndexOutOfBoundException
• sql统计相关修复
• 使用读写分离时的事务失败问题