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Signed-off-by: ti-srebot <ti-srebot@pingcap.com> Co-authored-by: uglyengineer <39617548+uglyengineer@users.noreply.github.com>
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title: TiDB 3.0.19 Release Notes | ||
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# TiDB 3.0.19 Release Notes | ||
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发版日期:2020 年 9 月 25 日 | ||
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TiDB 版本:3.0.19 | ||
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## 兼容性变化 | ||
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+ PD | ||
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- 更改 PD 的导入路径 `pingcap/pd` 为 `tikv/pd` [#2779](https://github.com/pingcap/pd/pull/2779) | ||
- 更改 PD 的 copyright 信息 `PingCAP, Inc` 为 `TiKV Project Authors` [#2777](https://github.com/pingcap/pd/pull/2777) | ||
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## 提升改进 | ||
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+ TiDB | ||
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- 缓解故障恢复对 QPS 的影响 [#19764](https://github.com/pingcap/tidb/pull/19764) | ||
- 支持调整 `union` 运算符的并发数 [#19885](https://github.com/pingcap/tidb/pull/19885) | ||
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+ TiKV | ||
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- 永久开启 `sync-log` [#8636](https://github.com/tikv/tikv/pull/8636) | ||
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+ PD | ||
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- 添加关于 PD 重启的告警规则 [#2789](https://github.com/pingcap/pd/pull/2789) | ||
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## Bug 修复 | ||
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+ TiDB | ||
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- 修复 `slow-log` 文件不存在导致查询出错的问题 [#20050](https://github.com/pingcap/tidb/pull/20050) | ||
- 添加对 `SHOW STATS_META` 和 `SHOW STATS_BUCKET` 这两个命令的权限检查 [#19759](https://github.com/pingcap/tidb/pull/19759) | ||
- 禁止将 Decimal 类型改成 Integer 类型 [#19681](https://github.com/pingcap/tidb/pull/19681) | ||
- 修复更改 `ENUM`/`SET` 类型的列时没有检查限制的问题 [#20045](https://github.com/pingcap/tidb/pull/20045) | ||
- 修复 tidb-server 在 panic 后没有释放 table lock 的问题 [#20021](https://github.com/pingcap/tidb/pull/20021) | ||
- 修复 `OR` 运算符在 `WHERE` 子句中没有正确处理的问题 [#19901](https://github.com/pingcap/tidb/pull/19901) | ||
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+ TiKV | ||
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- 修复 TiKV 的 status server 解析响应出错导致 panic 的问题 [#8540](https://github.com/tikv/tikv/pull/8540) | ||
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+ Tools | ||
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+ TiDB Lightning | ||
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- 修复了严格模式下 CSV 中遇到不合法 UTF 字符集没有及时退出进程的问题 [#378](https://github.com/pingcap/tidb-lightning/pull/378) |
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