Release 3.21.02.0

Release Notes:

We have released a new version 3.21.02.0.

Firstly, we must thanks to the following people for their contributions to our community：@evangoe, @Neil-Zhou, @314926481, @ClippedWings-renzy .

Features:

• [#2409] Support the general log. More Detail,see general log.
• [#2428] Support some sql statistics. More Detail,see sql statistic manager and tables.
• [#2387] Support server-side cursor. More Detail,see 4.4.3 Dble Flow.
• [#2503] Add an new rwSplitMode. More Detail,see rwSplitMode.
• [#2386] Support JSON mode configuration for internal. If upgrade from the old version, you should know this.
• [#1830]Suport show and resume other dble paused dataNode in cluster.
• [#2351] Provide "show dble_processlist" in server port
• [#2595] Support batch mode for load data . More Detail,see load data batch mode.
• [#2594] Upgrude druid to version 1.2.3

Bug-fixes:

• [#1843] In the same datahost, disable readHost first, then disable writeHost, report ERROR message, but disable is successful.
• [#2497] SlowQueryLog create ArrayIndexOutOfBoundsException and other problems, thanks to @evangoe for reporting the bug.
• [#2377]Can't use both show @@processlist and RwSplitService.
• [#2199]and ... or statement running error.
• [#2152] When the column after 'where' does not specify the table name，it will be routed to all nodes
• [#2342]shardingNode should be unique in the table config
• [#2366] Remove useless "/" in the error message when reloading config failed.
• [#2105][#2389] Using Navicat to connect the library can not display the table, thanks to @314926481 and @Neil-Zhou for reporting the bug.
• [#2034] Occur error "Union field merge error, field not found:W.SCANNUM" , thanks to @314926481 and @ClippedWings-renzy for reporting the bug.
• [#2324] Show which file causes the error in dry-run.

Breaking backward compatibility:

• [#2386] Support JSON mode configuration for dble internal.
• [#2598] homePath must to be configured in bootstrap.cnf.

If upgrade from the old version to this, you must know this.

---

发行说明：

我们发布了新版本 3.21.02.0。

首先，我们必须感谢以下人士对我们社区的贡献：@evangoe, @Neil-Zhou, @314926481, @ClippedWings-renzy .

特性：

• [#2409] 支持general log. 使用详情请见general log.
• [#2428] 支持一些sql统计信息. 更多详细信息，请参见sql statistic manager 和tables.
• [#2387] 支持服务器端游标。更多详细信息，请参见4.4.3 Dble Flow.
• [#2503] 添加新的rwSplitMode。更多详细信息，请参见rwSplitMode.
• [#2386] 支持dble内部的JSON模式配置。如果是从旧版本升级，您应该知道升级注意.
• [#1830] 支持展示并恢复群集中其他已暂停的dataNode。
• [#2351] Provide "show dble_processlist" in server port
• [#2595] 支持load data批处理。更多详细信息，请参见load data批处理模式.
• [#2594] 将druid升级至1.2.3版

缺陷修复:

• [#1843] 在同一数据主机中，先禁用readHost，然后禁用writeHost，报告ERROR消息，但实际禁用成功。
• [#2497] 慢查询日志的ArrayIndexOutOfBoundsException和其他问题，这要感谢@evangoe报告了该错误。
• [#2377] 不能同时使用show @@ processlist和RwSplitService。
• [#2199] and ... or statement 运行错误。
• [#2152] 如果“ where”之后的列未指定表名，它将被路由到所有节点。
• [#2342] shardingNode 在表配置中应该是唯一的。
• [#2366] 重新加载配置失败时，在错误消息中删除无用的“ /”。
• [#2105][#2389] 使用Navicat连接库无法显示表，感谢@314926481和@Neil-Zhou报告了该错误。
• [#2034] 发生错误"Union field merge error, field not found:W.SCANNUM", 感谢 @ClippedWings-renzy 报告了该错误。
• [#2324] 显示哪个文件导致dry-run出错了。

打破向后兼容性：

• [#2386] 支持内部的JSON模式配置。
• [#2598] homePath 必须在bootstrap.cnf中进行显示配置。

如果您从旧版本升级升级到本版本，您应该先阅读版本变更的内容.