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| title: TiDB 4.0.16 Release Notes | ||
| --- | ||
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| # TiDB 4.0.16 Release Notes | ||
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| 发版日期：2021 年 12 月 17 日 | ||
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| TiDB 版本：4.0.16 | ||
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| ## 兼容性更改 | ||
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| + TiKV | ||
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| - 在 v4.0.16 以前，当把一个非法的 UTF-8 字符串转换为 Real 类型时会直接报错。自 v4.0.16 起，TiDB 会依照该字符串中的合法 UTF-8 前缀进行转换 [#11466](https://github.com/tikv/tikv/issues/11466) | ||
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| + Tools | ||
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| + TiCDC | ||
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| - 将 Kafka Sink `max-message-bytes` 的默认值改为 1 MB，防止 TiCDC 发送过大消息到 Kafka 集群 [#2962](https://github.com/pingcap/ticdc/issues/2962) | ||
| - 将 Kafka Sink `partition-num` 的默认值改为 3，使 TiCDC 更加平均地分发消息到各个 Kafka partition [#3337](https://github.com/pingcap/ticdc/issues/3337) | ||
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| ## 提升改进 | ||
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| + TiDB | ||
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| - 升级 Grafana 到 v7.5.11，规避老版本的安全漏洞 | ||
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| + TiKV | ||
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| - 当使用 Backup & Restore 恢复数据或使用 TiDB Lightning 的 Local-backend 导入数据时，采用 zstd 算法压缩 SST 文件，从而减小磁盘使用空间 [#11469](https://github.com/tikv/tikv/issues/11469) | ||
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| + Tools | ||
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| + Backup & Restore (BR) | ||
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| - 增强恢复的鲁棒性 [#27421](https://github.com/pingcap/tidb/issues/27421) | ||
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| + TiCDC | ||
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| - 为 EtcdWorker 添加 tick 频率限制，防止 PD 的 etcd 写入次数过于频繁影响 PD 服务 [#3112](https://github.com/pingcap/ticdc/issues/3112) | ||
| - 优化 TiKV 重新加载时的速率限制控制，缓解 changefeed 初始化时 gPRC 的拥堵问题 [#3110](https://github.com/pingcap/ticdc/issues/3110) | ||
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| ## Bug 修复 | ||
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| + TiDB | ||
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| - 修复在统计信息模块的估算代价中，当执行 range 转 points 时由于数值溢出而导致的查询崩溃 [#23625](https://github.com/pingcap/tidb/issues/23625) | ||
| - 修复当 `ENUM` 类型作为 `IF` 或 `CASE WHEN` 等控制函数的参数时，返回结果不正确的问题 [#23114](https://github.com/pingcap/tidb/issues/23114) | ||
| - 修复由于 `tidb_enable_vectorized_expression` 设置的值不同（`on` 或 `off`）导致 `GREATEST` 函数返回结果不一致的问题 [#29434](https://github.com/pingcap/tidb/issues/29434) | ||
| - 修复 `Index Join` 在使用前缀索引时某些情况下崩溃的问题 [#24547](https://github.com/pingcap/tidb/issues/24547) | ||
| - 修复在某些情况下 Planner 可能缓存无效 `join` 计划的问题 [#28087](https://github.com/pingcap/tidb/issues/28087) | ||
| - 修复当 `sql_mode` 为空时，TiDB 无法插入 `null` 到非 null 列的问题 [#11648](https://github.com/pingcap/tidb/issues/11648) | ||
| - 修正 `GREATEST` 和 `LEAST` 函数的返回值类型错误 [#29019](https://github.com/pingcap/tidb/issues/29019) | ||
| - 修复 `grant` 和 `revoke` 操作在授予和撤销全局权限时，报 `privilege check fail` 错误的问题 [#29675](https://github.com/pingcap/tidb/issues/29675) | ||
| - 修复当 `CASE WHEN` 函数和 `ENUM` 类型一起使用时的崩溃问题 [#29357](https://github.com/pingcap/tidb/issues/29357) | ||
| - 修复 `microsecond` 函数的向量化表达式版本结果不正确的问题 [#29244](https://github.com/pingcap/tidb/issues/29244) | ||
| - 修复 `hour` 函数在向量化表达式中执行结果错误的问题 [#28643](https://github.com/pingcap/tidb/issues/28643) | ||
| - 修复乐观事务冲突可能导致事务相互阻塞的问题 [#11148](https://github.com/tikv/tikv/issues/11148) | ||
| - 修复 `auto analyze` 输出的日志信息不完整的问题 [#29188](https://github.com/pingcap/tidb/issues/29188) | ||
| - 修复当 `SQL_MODE` 为 'NO_ZERO_IN_DATE' 时，使用非法的默认时间不报错的问题 [#26766](https://github.com/pingcap/tidb/issues/26766) | ||
| - 修复 Grafana 上 Coprocessor Cache 监控面板不显示数据的问题。现在 Grafana 会显示 `hits`/`miss`/`evict` 的数据 [#26338](https://github.com/pingcap/tidb/issues/26338) | ||
| - 修复并发 truncate 同一个分区会导致 DDL 语句执行卡住的问题 [#26229](https://github.com/pingcap/tidb/issues/26229) | ||
| - 修复将 `Decimal` 转为 `String` 时长度信息错误的问题 [#29417](https://github.com/pingcap/tidb/issues/29417) | ||
| - 修复使用 `NATUAL JOIN` 连接多张表时，查询结果中多出一列的问题 [#29481](https://github.com/pingcap/tidb/issues/29481) | ||
| - 修复 `IndexScan` 使用前缀索引时，`TopN` 被错误下推至 `indexPlan` 的问题 [#29711](https://github.com/pingcap/tidb/issues/29711) | ||
| - 修复在 `DOUBLE` 类型的自增列上重试事务会导致数据错误的问题 [#29892](https://github.com/pingcap/tidb/issues/29892) | ||
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| + TiKV | ||
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| - 修复在极端情况下同时进行 Region Merge、ConfChange 和 Snapshot 时，TiKV 会出现 Panic 的问题 [#11475](https://github.com/tikv/tikv/issues/11475) | ||
| - 修复 Decimal 除法计算的结果为 0 时符号为负的问题 [#29586](https://github.com/pingcap/tidb/issues/29586) | ||
| - 修复 TiKV 监控项中实例级别 gRPC 的平均延迟时间不准确的问题 [#11299](https://github.com/tikv/tikv/issues/11299) | ||
| - 修复在缺失下游数据库时出现 TiCDC Panic 的问题 [#11123](https://github.com/tikv/tikv/issues/11123) | ||
| - 修复因 channel 打满而导致的 Raft 断连的问题 [#11047](https://github.com/tikv/tikv/issues/11047) | ||
| - 修复由于无法在 `Max`/`Min` 函数中正确识别 Int64 是否为有符号整数，导致 `Max`/`Min` 函数的计算结果不正确的问题 [#10158](https://github.com/tikv/tikv/issues/10158) | ||
| - 修复因 Congest 错误而导致的 CDC 频繁增加 scan 重试的问题 [#11082](https://github.com/tikv/tikv/issues/11082) | ||
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| + PD | ||
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| - 修复 TiKV 节点缩容后可能导致 Panic 的问题 [#4344](https://github.com/tikv/pd/issues/4344) | ||
| - 修复因 Region syncer 卡住而导致 leader 选举慢的问题 [#3936](https://github.com/tikv/pd/issues/3936) | ||
| - 允许 Evict Leader 调度器调度拥有不健康副本的 Region [#4093](https://github.com/tikv/pd/issues/4093) | ||
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| + TiFlash | ||
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| - 修复 TiFlash 在部分平台上由于缺失 nsl 库而无法启动的问题 | ||
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| + Tools | ||
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| + TiDB Binlog | ||
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| - 修复传输事务超过 1 GB 时 Drainer 会退出的问题 [#28659](https://github.com/pingcap/tidb/issues/28659) | ||
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| + TiCDC | ||
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| - 修复监控 checkpoint lag 出现负值的问题 [#3010](https://github.com/pingcap/ticdc/issues/3010) | ||
| - 修复在容器环境中 OOM 的问题 [#1798](https://github.com/pingcap/ticdc/issues/1798) | ||
| - 修复在多个 TiKV 崩溃或强制重启时可能遇到复制中断的问题 [#3288](https://github.com/pingcap/ticdc/issues/3288) | ||
| - 修复执行 DDL 后的内存泄漏的问题 [#3174](https://github.com/pingcap/ticdc/issues/3174) | ||
| - 修复当发生 ErrGCTTLExceeded 错误时，changefeed 不快速失败的问题 [#3111](https://github.com/pingcap/ticdc/issues/3111) | ||
| - 修复当上游 TiDB 实例意外退出时，TiCDC 同步任务推进可能停滞的问题 [#3061](https://github.com/pingcap/ticdc/issues/3061) | ||
| - 修复当 TiKV 向同一 Region 发送重复请求时，TiCDC 进程 Panic 的问题 [#2386](https://github.com/pingcap/ticdc/issues/2386) | ||
| - 修复 TiCDC 产生的 Kafka 消息体积不受 `max-message-size` 约束的问题 [#2962](https://github.com/pingcap/ticdc/issues/2962) | ||
| - 修复 tikv_cdc_min_resolved_ts_no_change_for_1m 监控在没有 changefeed 的情况下持续更新的问题 [#11017](https://github.com/tikv/tikv/issues/11017) | ||
| - 修复当写入 Kafka 消息发生错误时，TiCDC 同步任务推进可能停滞的问题 [#2978](https://github.com/pingcap/ticdc/issues/2978) | ||
| - 修复当开启 `force-replicate` 时，可能某些没有有效索引的分区表被忽略的问题 [#2834](https://github.com/pingcap/ticdc/issues/2834) | ||
| - 修复在创建新的 changefeed 时可能发生的内存泄漏问题 [#2389](https://github.com/pingcap/ticdc/issues/2389) | ||
| - 修复可能因为 Sink 组件提前推进 resolved ts 导致数据不一致的问题 [#3503](https://github.com/pingcap/ticdc/issues/3503) | ||
| - 修复当扫描存量数据耗时过长时，可能由于 TiKV 进行 GC 而导致存量数据扫描失败的问题 [#2470](https://github.com/pingcap/ticdc/issues/2470) | ||
| - 修复 changefeed 更新命令无法识别全局命令行参数的问题 [#2803](https://github.com/pingcap/ticdc/issues/2803) |
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| Original file line number | Diff line number | Diff line change |
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| title: TiDB 版本发布时间线 | ||
| summary: 了解 TiDB 的版本发布时间线。 | ||
| --- | ||
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| # TiDB 版本发布时间线 | ||
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| 本文列出了所有已发布的 TiDB 版本，按发布时间倒序呈现。 | ||
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| | 版本 | 发布日期 | | ||
| | :--- | :--- | | ||
| | [4.0.16](/releases/release-4.0.16.md) | 2021-12-17 | | ||
| | [5.1.3](/releases/release-5.1.3.md) | 2021-12-03 | | ||
| | [5.0.5](/releases/release-5.0.5.md) | 2021-12-03 | | ||
| | [5.2.3](/releases/release-5.2.3.md) | 2021-12-03 | | ||
| | [5.3.0](/releases/release-5.3.0.md) | 2021-11-30 | | ||
| | [5.2.2](/releases/release-5.2.2.md) | 2021-10-29 | | ||
| | [5.1.2](/releases/release-5.1.2.md) | 2021-09-27 | | ||
| | [5.0.4](/releases/release-5.0.4.md) | 2021-09-27 | | ||
| | [4.0.15](/releases/release-4.0.15.md) | 2021-09-27 | | ||
| | [5.2.1](/releases/release-5.2.1.md) | 2021-09-09 | | ||
| | [5.2.0](/releases/release-5.2.0.md) | 2021-08-27 | | ||
| | [5.1.1](/releases/release-5.1.1.md) | 2021-07-30 | | ||
| | [4.0.14](/releases/release-4.0.14.md) | 2021-07-27 | | ||
| | [5.0.3](/releases/release-5.0.3.md) | 2021-07-02 | | ||
| | [5.1.0](/releases/release-5.1.0.md) | 2021-06-24 | | ||
| | [5.0.2](/releases/release-5.0.2.md) | 2021-06-10 | | ||
| | [4.0.13](/releases/release-4.0.13.md) | 2021-05-28 | | ||
| | [5.0.1](/releases/release-5.0.1.md) | 2021-04-24 | | ||
| | [5.0.0](/releases/release-5.0.0.md) | 2021-04-07 | | ||
| | [4.0.12](/releases/release-4.0.12.md) | 2021-04-02 | | ||
| | [4.0.11](/releases/release-4.0.11.md) | 2021-02-26 | | ||
| | [4.0.10](/releases/release-4.0.10.md) | 2021-01-15 | | ||
| | [5.0.0-rc](/releases/release-5.0.0-rc.md) | 2021-01-12 | | ||
| | [3.0.20](/releases/release-3.0.20.md) | 2020-12-25 | | ||
| | [4.0.9](/releases/release-4.0.9.md) | 2020-12-21 | | ||
| | [4.0.8](/releases/release-4.0.8.md) | 2020-10-30 | | ||
| | [4.0.7](/releases/release-4.0.7.md) | 2020-09-29 | | ||
| | [3.0.19](/releases/release-3.0.19.md) | 2020-09-25 | | ||
| | [4.0.6](/releases/release-4.0.6.md) | 2020-09-15 | | ||
| | [4.0.5](/releases/release-4.0.5.md) | 2020-08-31 | | ||
| | [3.0.18](/releases/release-3.0.18.md) | 2020-08-21 | | ||
| | [3.0.17](/releases/release-3.0.17.md) | 2020-08-03 | | ||
| | [4.0.4](/releases/release-4.0.4.md) | 2020-07-31 | | ||
| | [4.0.3](/releases/release-4.0.3.md) | 2020-07-24 | | ||
| | [3.0.16](/releases/release-3.0.16.md) | 2020-07-03 | | ||
| | [4.0.2](/releases/release-4.0.2.md) | 2020-07-01 | | ||
| | [4.0.1](/releases/release-4.0.1.md) | 2020-06-12 | | ||
| | [3.0.15](/releases/release-3.0.15.md) | 2020-06-05 | | ||
| | [3.1.2](/releases/release-3.1.2.md) | 2020-06-04 | | ||
| | [4.0.0](/releases/release-4.0-ga.md) | 2020-05-28 | | ||
| | [4.0.0-rc.2](/releases/release-4.0.0-rc.2.md) | 2020-05-15 | | ||
| | [3.0.14](/releases/release-3.0.14.md) | 2020-05-09 | | ||
| | [3.1.1](/releases/release-3.1.1.md) | 2020-04-30 | | ||
| | [4.0.0-rc.1](/releases/release-4.0.0-rc.1.md) | 2020-04-28 | | ||
| | [3.0.13](/releases/release-3.0.13.md) | 2020-04-22 | | ||
| | [3.1.0](/releases/release-3.1.0-ga.md) | 2020-04-16 | | ||
| | [4.0.0-rc](/releases/release-4.0.0-rc.md) | 2020-04-08 | | ||
| | [3.1.0-rc](/releases/release-3.1.0-rc.md) | 2020-04-02 | | ||
| | [4.0.0-beta.2](/releases/release-4.0.0-beta.2.md) | 2020-03-18 | | ||
| | [3.0.12](/releases/release-3.0.12.md) | 2020-03-16 | | ||
| | [3.1.0-beta.2](/releases/release-3.1.0-beta.2.md) | 2020-03-09 | | ||
| | [3.0.11](/releases/release-3.0.11.md) | 2020-03-04 | | ||
| | [4.0.0-beta.1](/releases/release-4.0.0-beta.1.md) | 2020-02-28 | | ||
| | [3.0.10](/releases/release-3.0.10.md) | 2020-02-20 | | ||
| | [4.0.0-beta](/releases/release-4.0.0-beta.md) | 2020-01-17 | | ||
| | [3.0.9](/releases/release-3.0.9.md) | 2020-01-14 | | ||
| | [3.1.0-beta.1](/releases/release-3.1.0-beta.1.md) | 2020-01-10 | | ||
| | [3.0.8](/releases/release-3.0.8.md) | 2019-12-31 | | ||
| | [2.1.19](/releases/release-2.1.19.md) | 2019-12-27 | | ||
| | [3.1.0-beta](/releases/release-3.1.0-beta.md) | 2019-12-20 | | ||
| | [3.0.7](/releases/release-3.0.7.md) | 2019-12-04 | | ||
| | [3.0.6](/releases/release-3.0.6.md) | 2019-11-28 | | ||
| | [2.1.18](/releases/release-2.1.18.md) | 2019-11-04 | | ||
| | [3.0.5](/releases/release-3.0.5.md) | 2019-10-25 | | ||
| | [3.0.4](/releases/release-3.0.4.md) | 2019-10-08 | | ||
| | [2.1.17](/releases/release-2.1.17.md) | 2019-09-11 | | ||
| | [3.0.3](/releases/release-3.0.3.md) | 2019-08-29 | | ||
| | [2.1.16](/releases/release-2.1.16.md) | 2019-08-15 | | ||
| | [3.0.2](/releases/release-3.0.2.md) | 2019-08-07 | | ||
| | [3.0.1](/releases/release-3.0.1.md) | 2019-07-16 | | ||
| | [2.1.15](/releases/release-2.1.15.md) | 2019-07-16 | | ||
| | [2.1.14](/releases/release-2.1.14.md) | 2019-07-04 | | ||
| | [3.0.0](/releases/release-3.0-ga.md) | 2019-06-28 | | ||
| | [3.0.0-rc.3](/releases/release-3.0.0-rc.3.md) | 2019-06-21 | | ||
| | [2.1.13](/releases/release-2.1.13.md) | 2019-06-21 | | ||
| | [2.1.12](/releases/release-2.1.12.md) | 2019-06-13 | | ||
| | [2.1.11](/releases/release-2.1.11.md) | 2019-06-03 | | ||
| | [3.0.0-rc.2](/releases/release-3.0.0-rc.2.md) | 2019-05-28 | | ||
| | [2.1.10](/releases/release-2.1.10.md) | 2019-05-22 | | ||
| | [3.0.0-rc.1](/releases/release-3.0.0-rc.1.md) | 2019-05-10 | | ||
| | [2.1.9](/releases/release-2.1.9.md) | 2019-05-06 | | ||
| | [2.1.8](/releases/release-2.1.8.md) | 2019-04-12 | | ||
| | [2.1.7](/releases/release-2.1.7.md) | 2019-03-28 | | ||
| | [3.0.0-beta.1](/releases/release-3.0.0-beta.1.md) | 2019-03-26 | | ||
| | [2.1.6](/releases/release-2.1.6.md) | 2019-03-15 | | ||
| | [2.1.5](/releases/release-2.1.5.md) | 2019-02-28 | | ||
| | [2.1.4](/releases/release-2.1.4.md) | 2019-02-15 | | ||
| | [2.1.3](/releases/release-2.1.3.md) | 2019-01-28 | | ||
| | [3.0.0-beta](/releases/release-3.0-beta.md) | 2019-01-19 | | ||
| | [2.0.11](/releases/release-2.0.11.md) | 2019-01-03 | | ||
| | [2.1.2](/releases/release-2.1.2.md) | 2018-12-22 | | ||
| | [2.0.10](/releases/release-2.0.10.md) | 2018-12-18 | | ||
| | [2.1.1](/releases/release-2.1.1.md) | 2018-12-12 | | ||
| | [2.1.0](/releases/release-2.1-ga.md) | 2018-11-30 | | ||
| | [2.0.9](/releases/release-2.0.9.md) | 2018-11-19 | | ||
| | [2.1.0-rc.5](/releases/release-2.1-rc.5.md) | 2018-11-12 | | ||
| | [2.1.0-rc.4](/releases/release-2.1-rc.4.md) | 2018-10-23 | | ||
| | [2.0.8](/releases/release-2.0.8.md) | 2018-10-16 | | ||
| | [2.1.0-rc.3](/releases/release-2.1-rc.3.md) | 2018-09-29 | | ||
| | [2.1.0-rc.2](/releases/release-2.1-rc.2.md) | 2018-09-14 | | ||
| | [2.0.7](/releases/release-2.0.7.md) | 2018-09-07 | | ||
| | [2.1.0-rc.1](/releases/release-2.1-rc.1.md) | 2018-08-24 | | ||
| | [2.0.6](/releases/release-2.0.6.md) | 2018-08-06 | | ||
| | [2.0.5](/releases/release-2.0.5.md) | 2018-07-06 | | ||
| | [2.1.0-beta](/releases/release-2.1-beta.md) | 2018-06-29 | | ||
| | [2.0.4](/releases/release-2.0.4.md) | 2018-06-15 | | ||
| | [2.0.3](/releases/release-2.0.3.md) | 2018-06-01 | | ||
| | [2.0.2](/releases/release-2.0.2.md) | 2018-05-21 | | ||
| | [2.0.1](/releases/release-2.0.1.md) | 2018-05-16 | | ||
| | [2.0.0](/releases/release-2.0-ga.md) | 2018-04-27 | | ||
| | [2.0.0-rc.5](/releases/release-2.0-rc.5.md) | 2018-04-17 | | ||
| | [2.0.0-rc.4](/releases/release-2.0-rc.4.md) | 2018-03-30 | | ||
| | [2.0.0-rc.3](/releases/release-2.0-rc.3.md) | 2018-03-23 | | ||
| | [2.0.0-rc.1](/releases/release-2.0-rc.1.md) | 2018-03-09 | | ||
| | [1.1.0-beta](/releases/release-1.1-beta.md) | 2018-02-24 | | ||
| | [1.0.8](https://docs.pingcap.com/tidb/dev/release-1.0.8) | 2018-02-11 | | ||
| | [1.0.7](https://docs.pingcap.com/tidb/dev/release-1.0.7) | 2018-01-22 | | ||
| | [1.1.0-alpha](/releases/release-1.1-alpha.md) | 2018-01-19 | | ||
| | [1.0.6](https://docs.pingcap.com/tidb/dev/release-1.0.6) | 2018-01-08 | | ||
| | [1.0.5](https://docs.pingcap.com/tidb/dev/release-1.0.5) | 2017-12-26 | | ||
| | [1.0.4](https://docs.pingcap.com/tidb/dev/release-1.0.4) | 2017-12-11 | | ||
| | [1.0.3](https://docs.pingcap.com/tidb/dev/release-1.0.3) | 2017-11-28 | | ||
| | [1.0.2](https://docs.pingcap.com/tidb/dev/release-1.0.2) | 2017-11-13 | | ||
| | [1.0.1](https://docs.pingcap.com/tidb/dev/release-1.0.1) | 2017-11-01 | | ||
| | [1.0.0](/releases/release-1.0-ga.md) | 2017-10-16 | | ||
| | [Pre-GA](/releases/release-pre-ga.md) | 2017-08-30 | | ||
| | [rc4](/releases/release-rc.4.md) | 2017-08-04 | | ||
| | [rc3](/releases/release-rc.3.md) | 2017-06-16 | | ||
| | [rc2](/releases/release-rc.2.md) | 2017-03-01 | | ||
| | [rc1](/releases/release-rc.1.md) | 2016-12-23 | |