add v6.1.2 release notes (#10883) (#10986)

TOC.md

@@ -897,6 +897,7 @@
   - v6.2
     - [6.2.0-DMR](/releases/release-6.2.0.md)
   - v6.1
+    - [6.1.2](/releases/release-6.1.2.md)
     - [6.1.1](/releases/release-6.1.1.md)
     - [6.1.0](/releases/release-6.1.0.md)
   - v6.0

releases/release-6.1.2.md

@@ -0,0 +1,94 @@
+---
+title: TiDB 6.1.2 Release Notes
+---
+
+# TiDB 6.1.2 Release Notes
+
+Release date: October 24, 2022
+
+TiDB version: 6.1.2
+
+## Improvements
+
++ TiDB
+
+    - Allow setting placement rules and TiFlash replicas at the same time in one table [#37171](https://github.com/pingcap/tidb/issues/37171) @[lcwangchao](https://github.com/lcwangchao)
+
++ TiKV
+
+    - Support configuring the `unreachable_backoff` item to avoid Raftstore broadcasting too many messages after one peer becomes unreachable [#13054](https://github.com/tikv/tikv/issues/13054) @[5kbpers](https://github.com/5kbpers)
+    - Support configuring the RocksDB write stall settings to a value smaller than the flow control threshold [#13467](https://github.com/tikv/tikv/issues/13467) @[tabokie](https://github.com/tabokie)
+
++ Tools
+
+    + TiDB Lightning
+
+        - Add retryable errors during checksum to improve robustness [#37690](https://github.com/pingcap/tidb/issues/37690) @[D3Hunter](https://github.com/D3Hunter)
+
+    + TiCDC
+
+        - Enhance the performance of the region worker by handling resolved TS in a batch [#7078](https://github.com/pingcap/tiflow/issues/7078) @[sdojjy](https://github.com/sdojjy)
+
+## Bug fixes
+
++ TiDB
+
+    - Fix the issue that database-level privileges are incorrectly cleaned up [#38363](https://github.com/pingcap/tidb/issues/38363) @[dveeden](https://github.com/dveeden)
+    - Fix the incorrect output of `SHOW CREATE PLACEMENT POLICY` [#37526](https://github.com/pingcap/tidb/issues/37526) @[xhebox](https://github.com/xhebox)
+    - Fix the issue that when one PD node goes down, the query of `information_schema.TIKV_REGION_STATUS` fails due to not retrying other PD nodes [#35708](https://github.com/pingcap/tidb/issues/35708) @[tangenta](https://github.com/tangenta)
+    - Fix the issue that the `UNION` operator might return unexpected empty result [#36903](https://github.com/pingcap/tidb/issues/36903) @[tiancaiamao](https://github.com/tiancaiamao)
+    - Fix the wrong result that occurs when enabling dynamic mode in partitioned tables for TiFlash [#37254](https://github.com/pingcap/tidb/issues/37254) @[wshwsh12](https://github.com/wshwsh12)
+    - Fix the issue that the Region cache is not cleaned up in time when the Region is merged [#37141](https://github.com/pingcap/tidb/issues/37141) @[sticnarf](https://github.com/sticnarf)
+    - Fix the issue that the KV client sends unnecessary ping messages [#36861](https://github.com/pingcap/tidb/issues/36861) @[jackysp](https://github.com/jackysp)
+    - Fix the issue that the `EXPLAIN ANALYZE` statement with DML executors might return result before the transaction commit finishes [#37373](https://github.com/pingcap/tidb/issues/37373) @[cfzjywxk](https://github.com/cfzjywxk)
+    - Fix the issue that `GROUP CONCAT` with `ORDER BY` might fail when the `ORDER BY` clause contains a correlated subquery [#18216](https://github.com/pingcap/tidb/issues/18216) @[winoros](https://github.com/winoros)
+    - Fix the issue that `Can't find column` is reported if an `UPDATE` statement contains common table expressions (CTE) [#35758](https://github.com/pingcap/tidb/issues/35758) @[AilinKid](https://github.com/AilinKid)
+    - Fix the issue that the `EXECUTE` might throw an unexpected error in specific scenarios [#37187](https://github.com/pingcap/tidb/issues/37187) @[Reminiscent](https://github.com/Reminiscent)
+
++ TiKV
+
+    - Fix the issue that the snapshot data might be incomplete caused by batch snapshot across Regions [#13553](https://github.com/tikv/tikv/issues/13553) @[SpadeA-Tang](https://github.com/SpadeA-Tang)
+    - Fix the issue of QPS drop when flow control is enabled and `level0_slowdown_trigger` is set explicitly [#11424](https://github.com/tikv/tikv/issues/11424) @[Connor1996](https://github.com/Connor1996)
+    - Fix the issue that causes permission denied error when TiKV gets an error from the web identity provider and fails back to the default provider [#13122](https://github.com/tikv/tikv/issues/13122) @[3pointer](https://github.com/3pointer)
+    - Fix the issue that the TiKV service is unavailable for several minutes when a TiKV instance is in an isolated network environment [#12966](https://github.com/tikv/tikv/issues/12966) @[cosven](https://github.com/cosven)
+
++ PD
+
+    - Fix the issue that the statistics of the Region tree might be inaccurate [#5318](https://github.com/tikv/pd/issues/5318) @[rleungx](https://github.com/rleungx)
+    - Fix the issue that the TiFlash learner replica might not be created [#5401](https://github.com/tikv/pd/issues/5401) @[HunDunDM](https://github.com/HunDunDM)
+    - Fix the issue that PD cannot correctly handle dashboard proxy requests [#5321](https://github.com/tikv/pd/issues/5321) @[HunDunDM](https://github.com/HunDunDM)
+    - Fix the issue that unhealthy Region might cause PD panic [#5491](https://github.com/tikv/pd/issues/5491) @[nolouch](https://github.com/nolouch)
+
++ TiFlash
+
+    - Fix the issue that I/O Limiter might incorrectly throttle the I/O throughput of query requests after bulk writes, which reduces the query performance [#5801](https://github.com/pingcap/tiflash/issues/5801) @[JinheLin](https://github.com/JinheLin)
+    - Fix the issue that a window function might cause TiFlash to crash when the query is canceled [#5814](https://github.com/pingcap/tiflash/issues/5814) @[SeaRise](https://github.com/SeaRise)
+    - Fix the panic that occurs after creating the primary index with a column containing the `NULL` value [#5859](https://github.com/pingcap/tiflash/issues/5859) @[JaySon-Huang](https://github.com/JaySon-Huang)
+
++ Tools
+
+    + TiDB Lightning
+
+        - Fix panic of TiDB Lightning caused by invalid metric counters [#37338](https://github.com/pingcap/tidb/issues/37338) @[D3Hunter](https://github.com/D3Hunter)
+
+    + TiDB Data Migration (DM)
+
+        - Fix the issue that upstream table structure information is lost when DM tasks enter the sync unit and are interrupted [#7159](https://github.com/pingcap/tiflow/issues/7159) @[lance6716](https://github.com/lance6716)
+        - Fix large transaction errors by splitting SQL statements when saving checkpoints [#5010](https://github.com/pingcap/tiflow/issues/5010) @[lance6716](https://github.com/lance6716)
+        - Fix the issue that DM precheck requires the `SELECT` privilege on `INFORMATION_SCHEMA` [#7317](https://github.com/pingcap/tiflow/issues/7317) @[lance6716](https://github.com/lance6716)
+        - Fix the issue that DM-worker triggers a deadlock error after running DM tasks with fast/full validators [#7241](https://github.com/pingcap/tiflow/issues/7241) @[buchuitoudegou](https://github.com/buchuitoudegou)
+        - Fix the issue that DM reports the `Specified key was too long` error [#5315](https://github.com/pingcap/tiflow/issues/5315) @[lance6716](https://github.com/lance6716)
+        - Fix the issue that latin1 data might be corrupted during replication [#7028](https://github.com/pingcap/tiflow/issues/7028) @[lance6716](https://github.com/lance6716)
+
+    + TiCDC
+
+        - Fix the issue that the cdc server might panic if it receives an HTTP request before the cdc server fully starts [#6838](https://github.com/pingcap/tiflow/issues/6838) @[asddongmen](https://github.com/asddongmen)
+        - Fix the log flooding issue during upgrade [#7235](https://github.com/pingcap/tiflow/issues/7235) @[hi-rustin](https://github.com/hi-rustin)
+        - Fix the issue that changefeed's redo log files might be deleted by mistake [#6413](https://github.com/pingcap/tiflow/issues/6413) @[hi-rustin](https://github.com/hi-rustin)
+        - Fix the issue that TiCDC might become unavailable when too many operations in an etcd transaction are committed [#7131](https://github.com/pingcap/tiflow/issues/7131) @[hi-rustin](https://github.com/hi-rustin)
+        - Fix the issue that data inconsistency might occur when non-reentrant DDL statements in redo logs are executed twice [#6927](https://github.com/pingcap/tiflow/issues/6927) @[hicqu](https://github.com/hicqu)
+
+    + Backup & Restore (BR)
+
+        - Fix the issue that the regions are not balanced because the concurrency is set too large during the restoration [#37549](https://github.com/pingcap/tidb/issues/37549) @[3pointer](https://github.com/3pointer)
+        - Fix the issue that might lead to backup and restoration failure if special characters exist in the authorization key of external storage [#37469](https://github.com/pingcap/tidb/issues/37469) @[MoCuishle28](https://github.com/MoCuishle28)

releases/release-notes.md

@@ -14,6 +14,7 @@ title: Release Notes
 
 ## 6.1
 
+- [6.1.2](/releases/release-6.1.2.md): 2022-10-24
 - [6.1.1](/releases/release-6.1.1.md): 2022-09-01
 - [6.1.0](/releases/release-6.1.0.md): 2022-06-13
 

releases/release-timeline.md

@@ -9,6 +9,7 @@ This document shows all the released TiDB versions in reverse chronological orde
 
 | Version | Release Date |
 | :--- | :--- |
+| [6.1.2](/releases/release-6.1.2.md) | 2022-10-24 |
 | [5.4.3](/releases/release-5.4.3.md) | 2022-10-13 |
 | [6.3.0-DMR](/releases/release-6.3.0.md) | 2022-09-30 |
 | [5.3.3](/releases/release-5.3.3.md) | 2022-09-14 |