Release 3.21.02.13

[yanhuqing666]

Release Notes:

We have released a bug-fixed version 3.21.02.13.

Bug-fixes:

• Some parameters of the JDK like The java.specification.maintenance.version is not supported.
• MultiNodeSelectHandler may cause dble to hang.
• CPU usage up to 300%
• Some problems about maxPacketSize
• When load data local infile into dble, the used memory will not be recycled
• Optimize some problems about complex query.
• Optimize some heartbeat problems
• Bugs for INFORMATION_SCHEMA of MySQL8.0
• When RW-split mode, after switch schema, the first select was sent to master
• When where condition is between and and query with schema name, the explain plan is different from without schema

发行说明：

我们发布了3.21.02.13,这是个基于3.21.02.7的bug修复版本

问题修复:

• 不支持 JDK 的一些参数，例如 The java.specification.maintenance.version
• MultiNodeSelectHandler 可能导致dble 卡死
• CPU使用率高达300%问题
• maxPacketSize相关问题。
• 当使用load data local infile导入dble, 使用过的内存不会被回收
• 复杂查询的一些问题
• 心跳的优化
• dble对8.0版本MySQL的INFORMATION_SCHEMA表处理存在问题
• 切换库后，第一个select语句发往了主
• where 条件为between and 时， 查询语句带库名和不带库名，执行计划不一致

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This discussion was created from the release Release 3.21.02.13.