diff --git a/dev/TOC.md b/dev/TOC.md index 19bdf16471c4..a916e01e84dd 100644 --- a/dev/TOC.md +++ b/dev/TOC.md @@ -394,6 +394,7 @@ - [3.0.0-beta.1](/dev/releases/3.0.0-beta.1.md) - [3.0.0-beta](/dev/releases/3.0beta.md) + v2.1 + - [2.1.17](/dev/releases/2.1.17.md) - [2.1.16](/dev/releases/2.1.16.md) - [2.1.15](/dev/releases/2.1.15.md) - [2.1.14](/dev/releases/2.1.14.md) diff --git a/dev/releases/2.1.17.md b/dev/releases/2.1.17.md new file mode 100644 index 000000000000..80c3161c280e --- /dev/null +++ b/dev/releases/2.1.17.md @@ -0,0 +1,92 @@ +--- +title: TiDB 2.1.17 Release Notes +category: Releases +--- + +# TiDB 2.1.17 Release Notes + +Release date: September 11, 2019 + +TiDB version: 2.1.17 + +TiDB Ansible version: 2.1.17 + ++ New features + - Add the `WHERE` clause in TiDB’s `SHOW TABLE REGIONS` syntax + - Add the `config-check` feature in TiKV and PD to check the configuration items + - Add the `remove-tomestone` command in pd-ctl to clear tombstone store records + - Add the `worker-count` and `txn-batch` configuration items in Reparo to control the recovery speed + ++ Improvements + - Optimize PD’s scheduling process by supporting actively pushing operators + - Optimize TiKV’s starting process to reduce jitters caused by restarting nodes + ++ Changed behaviors + - Change `start ts` in TiDB slow query logs from the last retry time to the first execution time + - Replace the `Index_ids` field in TiDB slow query logs with the `Index_names` field to improve the usability of slow query logs + - Add the `split-region-max-num` parameter in TiDB’s configuration files to modify the maximum number of Regions allowed by the `SPLIT TABLE` syntax, which is increased from 1,000 to 10,000 in the default configuration + +## TiDB + ++ SQL Optimizer + - Fix the issue that the error message is not returned correctly when an error occurs during `EvalSubquery` building `Executor` [#11811](https://github.com/pingcap/tidb/pull/11811) + - Fix the issue that the query result might be incorrect when the number of rows in the outer table is greater than that in a single batch in Index Lookup Join; expand the functional scope of Index Lookup Join; `UnionScan` can be used as a subnode of `IndexJoin` [#11843](https://github.com/pingcap/tidb/pull/11843) + - Add the display of invalid keys (like `invalid encoded key flag 252` ) in the `SHOW STAT_BUCKETS` syntax, for the situation where invalid keys might occur during the statistics feedback process [#12098](https://github.com/pingcap/tidb/pull/12098) ++ SQL Execution Engine + - Fix some incorrect results (like `select cast(13835058000000000000 as double)`) caused by the number value that is first converted to `UINT` when the `CAST` function is converting the number value type [#11712](https://github.com/pingcap/tidb/pull/11712) + - Fix the issue that the calculation result might be incorrect when the dividend of the `DIV` calculation is a decimal and this calculation contains a negative number [#11812](https://github.com/pingcap/tidb/pull/11812) + - Add the `ConvertStrToIntStrict` function to fix the MySQL incompatibility issue caused by some strings being converted to the `INT` type when executing the `SELECT`/`EXPLAIN` statement [#11892](https://github.com/pingcap/tidb/pull/11892) + - Fix the issue that the `Explain` result might be incorrect caused by wrong configuration of `stmtCtx` when `EXPLAIN ... FOR CONNECTION` is used [#11978](https://github.com/pingcap/tidb/pull/11978) + - Fix the issue that the result returned by the `unaryMinus` function is incompatible with MySQL, caused by the non-decimal result when the integer result overflows [#11990](https://github.com/pingcap/tidb/pull/11990) + - Fix the issue that `last_insert_id()` might be incorrect, caused by the counting order when the `LOAD DATA` statement is being executed [#11994](https://github.com/pingcap/tidb/pull/11994) + - Fix the issue that `last_insert_id()` might be incorrect when the user writes auto-increment column data in an explicit-implicit mixed way [#12001](https://github.com/pingcap/tidb/pull/12001) + - Fix an over-quoted bug for the `JSON_UNQUOTE` function: only values enclosed by double quote marks (`"`) should be unquoted. For example, the result of “`SELECT JSON_UNQUOTE("\\\\")`” should be “`\\`” (not changed) [#12096](https://github.com/pingcap/tidb/pull/12096) ++ Server + - Change `start ts` recorded in slow query logs from the last retry time to the first execution time when retrying TiDB transactions [#11878](https://github.com/pingcap/tidb/pull/11878) + - Add the number of keys of a transaction in `LockResolver` to avoid the scan operation on the whole Region and reduce costs of resolving locking when the number of keys is reduced [#11889](https://github.com/pingcap/tidb/pull/11889) + - Fix the issue that the `succ` field value might be incorrect in slow query logs [#11886](https://github.com/pingcap/tidb/pull/11886) + - Replace the `Index_ids` filed in slow query logs with the `Index_names` field to improve the usability of slow query logs [#12063](https://github.com/pingcap/tidb/pull/12063) + - Fix the connection break issue caused by TiDB parsing `-` into EOF Error when `Duration` contains `-` (like `select time(‘--’)`) [#11910](https://github.com/pingcap/tidb/pull/11910) + - Remove an invalid Region from `RegionCache` more quickly to reduce the number of requests sent to this Region [#11931](https://github.com/pingcap/tidb/pull/11931) + - Fix the connection break issue caused by incorrectly handling the OOM panic issue when `oom-action = "cancel"` and OOM occurs in the `Insert Into … Select` syntax [#12126](https://github.com/pingcap/tidb/pull/12126) ++ DDL + - Add the reverse scan interface for `tikvSnapshot` to efficiently query DDL history jobs. After using this interface, the execution time of `ADMIN SHOW DDL JOBS` is remarkably decreased [#11789](https://github.com/pingcap/tidb/pull/11789) + - Improve the `CREATE TABLE ... PRE_SPLIT_REGION` syntax: change the number of pre-splitting Regions from 2^(N-1) to 2^N when `PRE_SPLIT_REGION = N` [#11797](https://github.com/pingcap/tidb/pull/11797/files) + - Decrease the default parameter value for the background worker thread of the `Add Index` operation to avoid great impacts on online workloads [#11875](https://github.com/pingcap/tidb/pull/11875) + - Improve the `SPLIT TABLE` syntax behavior: generate N data Region(s) and one index Region when `SPLIT TABLE ... REGIONS N` is used to divide Regions [#11929](https://github.com/pingcap/tidb/pull/11929) + - Add the `split-region-max-num` parameter (`10000` by default) in the configuration file to make the maximum number of Regions allowed by the `SPLIT TABLE` syntax adjustable [#12080](https://github.com/pingcap/tidb/pull/12080) + - Fix the issue that the `CREATE TABLE` clause cannot be parsed by the downstream MySQL, caused by uncommented `PRE_SPLIT_REGIONS` in this clause when the system writes the binlog [#12121](https://github.com/pingcap/tidb/pull/12121) + - Add the `WHERE` sub-clause in `SHOW TABLE … REGIONS` and `SHOW TABLE .. INDEX … REGIONS` [#12124](https://github.com/pingcap/tidb/pull/12124) ++ Monitor + - Add the `connection_transient_failure_count` monitoring metric to count gRPC connection errors of `tikvclient` [#12092](https://github.com/pingcap/tidb/pull/12092) + +## TiKV + +- Fix the incorrect result of counting keys in a Region in some cases [#5415](https://github.com/tikv/tikv/pull/5415) +- Add the `config-check` option in TiKV to check whether the TiKV configuration item is valid [#5391](https://github.com/tikv/tikv/pull/5391) +- Optimize the starting process to reduce jitters caused by restarting nodes [#5277](https://github.com/tikv/tikv/pull/5277) +- Optimize the resolving locking process in some cases to speed up resolving locking for transactions [#5339](https://github.com/tikv/tikv/pull/5339) +- Optimize the `get_txn_commit_info` process to speed up committing transactions [#5062](https://github.com/tikv/tikv/pull/5062) +- Simplify Raft-related logs [#5425](https://github.com/tikv/tikv/pull/5425) +- Resolve the issue that TiKV exits abnormally in some cases [#5441](https://github.com/tikv/tikv/pull/5441) + +## PD + +- Add the `config-check` option in PD to check whether the PD configuration item is valid [#1725](https://github.com/pingcap/pd/pull/1725) +- Add the `remove-tomestone` command in pd-ctl to support clearing tombstone store records [#1705](https://github.com/pingcap/pd/pull/1705) +- Support actively pushing operators to speed up scheduling [#1686](https://github.com/pingcap/pd/pull/1686) + +## Tools + ++ TiDB Binlog + - Add `worker-count` and `txn-batch` configuration items in Reparo to control the recovery speed [#746](https://github.com/pingcap/tidb-binlog/pull/746) + - Optimize the memory usage of Drainer to improve the parallel execution efficiency [#735](https://github.com/pingcap/tidb-binlog/pull/735) + - Fix the bug that Pump cannot quit normally in some cases [#739](https://github.com/pingcap/tidb-binlog/pull/739) + - Optimize the processing logic of `LevelDB` in Pump to improve the execution efficiency of GC [#720](https://github.com/pingcap/tidb-binlog/pull/720) ++ TiDB Lightning + - Fix the bug that tidb-lightning might crash caused by re-importing data from the checkpoint [#239](https://github.com/pingcap/tidb-lightning/pull/239) + +## TiDB Ansible + +- Update the Spark version to 2.4.3, and update the TiSpark version to 2.2.0 that is compatible with Spark 2.4.3 [#914](https://github.com/pingcap/tidb-ansible/pull/914), [#919](https://github.com/pingcap/tidb-ansible/pull/927) +- Fix the issue that there is a long waiting time when the remote machine password has expired [#937](https://github.com/pingcap/tidb-ansible/pull/937), [#948](https://github.com/pingcap/tidb-ansible/pull/948) diff --git a/dev/releases/rn.md b/dev/releases/rn.md index 0847b048ce26..23ab1aa7a82e 100644 --- a/dev/releases/rn.md +++ b/dev/releases/rn.md @@ -19,6 +19,7 @@ category: release ## 2.1 +- [2.1.17](/dev/releases/2.1.17.md) - [2.1.16](/dev/releases/2.1.16.md) - [2.1.15](/dev/releases/2.1.15.md) - [2.1.14](/dev/releases/2.1.14.md) diff --git a/v2.1/TOC.md b/v2.1/TOC.md index f28f5b4e9e26..5cc44cdf6d63 100644 --- a/v2.1/TOC.md +++ b/v2.1/TOC.md @@ -328,6 +328,7 @@ - [Roadmap](/v2.1/roadmap.md) + [Releases](/v2.1/releases/rn.md) + v2.1 + - [2.1.17](/v2.1/releases/2.1.17.md) - [2.1.16](/v2.1/releases/2.1.16.md) - [2.1.15](/v2.1/releases/2.1.15.md) - [2.1.14](/v2.1/releases/2.1.14.md) diff --git a/v2.1/releases/2.1.17.md b/v2.1/releases/2.1.17.md new file mode 100644 index 000000000000..80c3161c280e --- /dev/null +++ b/v2.1/releases/2.1.17.md @@ -0,0 +1,92 @@ +--- +title: TiDB 2.1.17 Release Notes +category: Releases +--- + +# TiDB 2.1.17 Release Notes + +Release date: September 11, 2019 + +TiDB version: 2.1.17 + +TiDB Ansible version: 2.1.17 + ++ New features + - Add the `WHERE` clause in TiDB’s `SHOW TABLE REGIONS` syntax + - Add the `config-check` feature in TiKV and PD to check the configuration items + - Add the `remove-tomestone` command in pd-ctl to clear tombstone store records + - Add the `worker-count` and `txn-batch` configuration items in Reparo to control the recovery speed + ++ Improvements + - Optimize PD’s scheduling process by supporting actively pushing operators + - Optimize TiKV’s starting process to reduce jitters caused by restarting nodes + ++ Changed behaviors + - Change `start ts` in TiDB slow query logs from the last retry time to the first execution time + - Replace the `Index_ids` field in TiDB slow query logs with the `Index_names` field to improve the usability of slow query logs + - Add the `split-region-max-num` parameter in TiDB’s configuration files to modify the maximum number of Regions allowed by the `SPLIT TABLE` syntax, which is increased from 1,000 to 10,000 in the default configuration + +## TiDB + ++ SQL Optimizer + - Fix the issue that the error message is not returned correctly when an error occurs during `EvalSubquery` building `Executor` [#11811](https://github.com/pingcap/tidb/pull/11811) + - Fix the issue that the query result might be incorrect when the number of rows in the outer table is greater than that in a single batch in Index Lookup Join; expand the functional scope of Index Lookup Join; `UnionScan` can be used as a subnode of `IndexJoin` [#11843](https://github.com/pingcap/tidb/pull/11843) + - Add the display of invalid keys (like `invalid encoded key flag 252` ) in the `SHOW STAT_BUCKETS` syntax, for the situation where invalid keys might occur during the statistics feedback process [#12098](https://github.com/pingcap/tidb/pull/12098) ++ SQL Execution Engine + - Fix some incorrect results (like `select cast(13835058000000000000 as double)`) caused by the number value that is first converted to `UINT` when the `CAST` function is converting the number value type [#11712](https://github.com/pingcap/tidb/pull/11712) + - Fix the issue that the calculation result might be incorrect when the dividend of the `DIV` calculation is a decimal and this calculation contains a negative number [#11812](https://github.com/pingcap/tidb/pull/11812) + - Add the `ConvertStrToIntStrict` function to fix the MySQL incompatibility issue caused by some strings being converted to the `INT` type when executing the `SELECT`/`EXPLAIN` statement [#11892](https://github.com/pingcap/tidb/pull/11892) + - Fix the issue that the `Explain` result might be incorrect caused by wrong configuration of `stmtCtx` when `EXPLAIN ... FOR CONNECTION` is used [#11978](https://github.com/pingcap/tidb/pull/11978) + - Fix the issue that the result returned by the `unaryMinus` function is incompatible with MySQL, caused by the non-decimal result when the integer result overflows [#11990](https://github.com/pingcap/tidb/pull/11990) + - Fix the issue that `last_insert_id()` might be incorrect, caused by the counting order when the `LOAD DATA` statement is being executed [#11994](https://github.com/pingcap/tidb/pull/11994) + - Fix the issue that `last_insert_id()` might be incorrect when the user writes auto-increment column data in an explicit-implicit mixed way [#12001](https://github.com/pingcap/tidb/pull/12001) + - Fix an over-quoted bug for the `JSON_UNQUOTE` function: only values enclosed by double quote marks (`"`) should be unquoted. For example, the result of “`SELECT JSON_UNQUOTE("\\\\")`” should be “`\\`” (not changed) [#12096](https://github.com/pingcap/tidb/pull/12096) ++ Server + - Change `start ts` recorded in slow query logs from the last retry time to the first execution time when retrying TiDB transactions [#11878](https://github.com/pingcap/tidb/pull/11878) + - Add the number of keys of a transaction in `LockResolver` to avoid the scan operation on the whole Region and reduce costs of resolving locking when the number of keys is reduced [#11889](https://github.com/pingcap/tidb/pull/11889) + - Fix the issue that the `succ` field value might be incorrect in slow query logs [#11886](https://github.com/pingcap/tidb/pull/11886) + - Replace the `Index_ids` filed in slow query logs with the `Index_names` field to improve the usability of slow query logs [#12063](https://github.com/pingcap/tidb/pull/12063) + - Fix the connection break issue caused by TiDB parsing `-` into EOF Error when `Duration` contains `-` (like `select time(‘--’)`) [#11910](https://github.com/pingcap/tidb/pull/11910) + - Remove an invalid Region from `RegionCache` more quickly to reduce the number of requests sent to this Region [#11931](https://github.com/pingcap/tidb/pull/11931) + - Fix the connection break issue caused by incorrectly handling the OOM panic issue when `oom-action = "cancel"` and OOM occurs in the `Insert Into … Select` syntax [#12126](https://github.com/pingcap/tidb/pull/12126) ++ DDL + - Add the reverse scan interface for `tikvSnapshot` to efficiently query DDL history jobs. After using this interface, the execution time of `ADMIN SHOW DDL JOBS` is remarkably decreased [#11789](https://github.com/pingcap/tidb/pull/11789) + - Improve the `CREATE TABLE ... PRE_SPLIT_REGION` syntax: change the number of pre-splitting Regions from 2^(N-1) to 2^N when `PRE_SPLIT_REGION = N` [#11797](https://github.com/pingcap/tidb/pull/11797/files) + - Decrease the default parameter value for the background worker thread of the `Add Index` operation to avoid great impacts on online workloads [#11875](https://github.com/pingcap/tidb/pull/11875) + - Improve the `SPLIT TABLE` syntax behavior: generate N data Region(s) and one index Region when `SPLIT TABLE ... REGIONS N` is used to divide Regions [#11929](https://github.com/pingcap/tidb/pull/11929) + - Add the `split-region-max-num` parameter (`10000` by default) in the configuration file to make the maximum number of Regions allowed by the `SPLIT TABLE` syntax adjustable [#12080](https://github.com/pingcap/tidb/pull/12080) + - Fix the issue that the `CREATE TABLE` clause cannot be parsed by the downstream MySQL, caused by uncommented `PRE_SPLIT_REGIONS` in this clause when the system writes the binlog [#12121](https://github.com/pingcap/tidb/pull/12121) + - Add the `WHERE` sub-clause in `SHOW TABLE … REGIONS` and `SHOW TABLE .. INDEX … REGIONS` [#12124](https://github.com/pingcap/tidb/pull/12124) ++ Monitor + - Add the `connection_transient_failure_count` monitoring metric to count gRPC connection errors of `tikvclient` [#12092](https://github.com/pingcap/tidb/pull/12092) + +## TiKV + +- Fix the incorrect result of counting keys in a Region in some cases [#5415](https://github.com/tikv/tikv/pull/5415) +- Add the `config-check` option in TiKV to check whether the TiKV configuration item is valid [#5391](https://github.com/tikv/tikv/pull/5391) +- Optimize the starting process to reduce jitters caused by restarting nodes [#5277](https://github.com/tikv/tikv/pull/5277) +- Optimize the resolving locking process in some cases to speed up resolving locking for transactions [#5339](https://github.com/tikv/tikv/pull/5339) +- Optimize the `get_txn_commit_info` process to speed up committing transactions [#5062](https://github.com/tikv/tikv/pull/5062) +- Simplify Raft-related logs [#5425](https://github.com/tikv/tikv/pull/5425) +- Resolve the issue that TiKV exits abnormally in some cases [#5441](https://github.com/tikv/tikv/pull/5441) + +## PD + +- Add the `config-check` option in PD to check whether the PD configuration item is valid [#1725](https://github.com/pingcap/pd/pull/1725) +- Add the `remove-tomestone` command in pd-ctl to support clearing tombstone store records [#1705](https://github.com/pingcap/pd/pull/1705) +- Support actively pushing operators to speed up scheduling [#1686](https://github.com/pingcap/pd/pull/1686) + +## Tools + ++ TiDB Binlog + - Add `worker-count` and `txn-batch` configuration items in Reparo to control the recovery speed [#746](https://github.com/pingcap/tidb-binlog/pull/746) + - Optimize the memory usage of Drainer to improve the parallel execution efficiency [#735](https://github.com/pingcap/tidb-binlog/pull/735) + - Fix the bug that Pump cannot quit normally in some cases [#739](https://github.com/pingcap/tidb-binlog/pull/739) + - Optimize the processing logic of `LevelDB` in Pump to improve the execution efficiency of GC [#720](https://github.com/pingcap/tidb-binlog/pull/720) ++ TiDB Lightning + - Fix the bug that tidb-lightning might crash caused by re-importing data from the checkpoint [#239](https://github.com/pingcap/tidb-lightning/pull/239) + +## TiDB Ansible + +- Update the Spark version to 2.4.3, and update the TiSpark version to 2.2.0 that is compatible with Spark 2.4.3 [#914](https://github.com/pingcap/tidb-ansible/pull/914), [#919](https://github.com/pingcap/tidb-ansible/pull/927) +- Fix the issue that there is a long waiting time when the remote machine password has expired [#937](https://github.com/pingcap/tidb-ansible/pull/937), [#948](https://github.com/pingcap/tidb-ansible/pull/948) diff --git a/v2.1/releases/rn.md b/v2.1/releases/rn.md index 9d7ff6eeee3d..f58ac7ebfb1d 100644 --- a/v2.1/releases/rn.md +++ b/v2.1/releases/rn.md @@ -17,6 +17,7 @@ category: release ## 2.1 +- [2.1.17](/v2.1/releases/2.1.17.md) - [2.1.16](/v2.1/releases/2.1.16.md) - [2.1.15](/v2.1/releases/2.1.15.md) - [2.1.14](/v2.1/releases/2.1.14.md) diff --git a/v3.0/TOC.md b/v3.0/TOC.md index e1a2c1e16901..a00d56f3e933 100644 --- a/v3.0/TOC.md +++ b/v3.0/TOC.md @@ -393,6 +393,7 @@ - [3.0.0-beta.1](/v3.0/releases/3.0.0-beta.1.md) - [3.0.0-beta](/v3.0/releases/3.0beta.md) + v2.1 + - [2.1.17](/v3.0/releases/2.1.17.md) - [2.1.16](/v3.0/releases/2.1.16.md) - [2.1.15](/v3.0/releases/2.1.15.md) - [2.1.14](/v3.0/releases/2.1.14.md) diff --git a/v3.0/releases/2.1.17.md b/v3.0/releases/2.1.17.md new file mode 100644 index 000000000000..80c3161c280e --- /dev/null +++ b/v3.0/releases/2.1.17.md @@ -0,0 +1,92 @@ +--- +title: TiDB 2.1.17 Release Notes +category: Releases +--- + +# TiDB 2.1.17 Release Notes + +Release date: September 11, 2019 + +TiDB version: 2.1.17 + +TiDB Ansible version: 2.1.17 + ++ New features + - Add the `WHERE` clause in TiDB’s `SHOW TABLE REGIONS` syntax + - Add the `config-check` feature in TiKV and PD to check the configuration items + - Add the `remove-tomestone` command in pd-ctl to clear tombstone store records + - Add the `worker-count` and `txn-batch` configuration items in Reparo to control the recovery speed + ++ Improvements + - Optimize PD’s scheduling process by supporting actively pushing operators + - Optimize TiKV’s starting process to reduce jitters caused by restarting nodes + ++ Changed behaviors + - Change `start ts` in TiDB slow query logs from the last retry time to the first execution time + - Replace the `Index_ids` field in TiDB slow query logs with the `Index_names` field to improve the usability of slow query logs + - Add the `split-region-max-num` parameter in TiDB’s configuration files to modify the maximum number of Regions allowed by the `SPLIT TABLE` syntax, which is increased from 1,000 to 10,000 in the default configuration + +## TiDB + ++ SQL Optimizer + - Fix the issue that the error message is not returned correctly when an error occurs during `EvalSubquery` building `Executor` [#11811](https://github.com/pingcap/tidb/pull/11811) + - Fix the issue that the query result might be incorrect when the number of rows in the outer table is greater than that in a single batch in Index Lookup Join; expand the functional scope of Index Lookup Join; `UnionScan` can be used as a subnode of `IndexJoin` [#11843](https://github.com/pingcap/tidb/pull/11843) + - Add the display of invalid keys (like `invalid encoded key flag 252` ) in the `SHOW STAT_BUCKETS` syntax, for the situation where invalid keys might occur during the statistics feedback process [#12098](https://github.com/pingcap/tidb/pull/12098) ++ SQL Execution Engine + - Fix some incorrect results (like `select cast(13835058000000000000 as double)`) caused by the number value that is first converted to `UINT` when the `CAST` function is converting the number value type [#11712](https://github.com/pingcap/tidb/pull/11712) + - Fix the issue that the calculation result might be incorrect when the dividend of the `DIV` calculation is a decimal and this calculation contains a negative number [#11812](https://github.com/pingcap/tidb/pull/11812) + - Add the `ConvertStrToIntStrict` function to fix the MySQL incompatibility issue caused by some strings being converted to the `INT` type when executing the `SELECT`/`EXPLAIN` statement [#11892](https://github.com/pingcap/tidb/pull/11892) + - Fix the issue that the `Explain` result might be incorrect caused by wrong configuration of `stmtCtx` when `EXPLAIN ... FOR CONNECTION` is used [#11978](https://github.com/pingcap/tidb/pull/11978) + - Fix the issue that the result returned by the `unaryMinus` function is incompatible with MySQL, caused by the non-decimal result when the integer result overflows [#11990](https://github.com/pingcap/tidb/pull/11990) + - Fix the issue that `last_insert_id()` might be incorrect, caused by the counting order when the `LOAD DATA` statement is being executed [#11994](https://github.com/pingcap/tidb/pull/11994) + - Fix the issue that `last_insert_id()` might be incorrect when the user writes auto-increment column data in an explicit-implicit mixed way [#12001](https://github.com/pingcap/tidb/pull/12001) + - Fix an over-quoted bug for the `JSON_UNQUOTE` function: only values enclosed by double quote marks (`"`) should be unquoted. For example, the result of “`SELECT JSON_UNQUOTE("\\\\")`” should be “`\\`” (not changed) [#12096](https://github.com/pingcap/tidb/pull/12096) ++ Server + - Change `start ts` recorded in slow query logs from the last retry time to the first execution time when retrying TiDB transactions [#11878](https://github.com/pingcap/tidb/pull/11878) + - Add the number of keys of a transaction in `LockResolver` to avoid the scan operation on the whole Region and reduce costs of resolving locking when the number of keys is reduced [#11889](https://github.com/pingcap/tidb/pull/11889) + - Fix the issue that the `succ` field value might be incorrect in slow query logs [#11886](https://github.com/pingcap/tidb/pull/11886) + - Replace the `Index_ids` filed in slow query logs with the `Index_names` field to improve the usability of slow query logs [#12063](https://github.com/pingcap/tidb/pull/12063) + - Fix the connection break issue caused by TiDB parsing `-` into EOF Error when `Duration` contains `-` (like `select time(‘--’)`) [#11910](https://github.com/pingcap/tidb/pull/11910) + - Remove an invalid Region from `RegionCache` more quickly to reduce the number of requests sent to this Region [#11931](https://github.com/pingcap/tidb/pull/11931) + - Fix the connection break issue caused by incorrectly handling the OOM panic issue when `oom-action = "cancel"` and OOM occurs in the `Insert Into … Select` syntax [#12126](https://github.com/pingcap/tidb/pull/12126) ++ DDL + - Add the reverse scan interface for `tikvSnapshot` to efficiently query DDL history jobs. After using this interface, the execution time of `ADMIN SHOW DDL JOBS` is remarkably decreased [#11789](https://github.com/pingcap/tidb/pull/11789) + - Improve the `CREATE TABLE ... PRE_SPLIT_REGION` syntax: change the number of pre-splitting Regions from 2^(N-1) to 2^N when `PRE_SPLIT_REGION = N` [#11797](https://github.com/pingcap/tidb/pull/11797/files) + - Decrease the default parameter value for the background worker thread of the `Add Index` operation to avoid great impacts on online workloads [#11875](https://github.com/pingcap/tidb/pull/11875) + - Improve the `SPLIT TABLE` syntax behavior: generate N data Region(s) and one index Region when `SPLIT TABLE ... REGIONS N` is used to divide Regions [#11929](https://github.com/pingcap/tidb/pull/11929) + - Add the `split-region-max-num` parameter (`10000` by default) in the configuration file to make the maximum number of Regions allowed by the `SPLIT TABLE` syntax adjustable [#12080](https://github.com/pingcap/tidb/pull/12080) + - Fix the issue that the `CREATE TABLE` clause cannot be parsed by the downstream MySQL, caused by uncommented `PRE_SPLIT_REGIONS` in this clause when the system writes the binlog [#12121](https://github.com/pingcap/tidb/pull/12121) + - Add the `WHERE` sub-clause in `SHOW TABLE … REGIONS` and `SHOW TABLE .. INDEX … REGIONS` [#12124](https://github.com/pingcap/tidb/pull/12124) ++ Monitor + - Add the `connection_transient_failure_count` monitoring metric to count gRPC connection errors of `tikvclient` [#12092](https://github.com/pingcap/tidb/pull/12092) + +## TiKV + +- Fix the incorrect result of counting keys in a Region in some cases [#5415](https://github.com/tikv/tikv/pull/5415) +- Add the `config-check` option in TiKV to check whether the TiKV configuration item is valid [#5391](https://github.com/tikv/tikv/pull/5391) +- Optimize the starting process to reduce jitters caused by restarting nodes [#5277](https://github.com/tikv/tikv/pull/5277) +- Optimize the resolving locking process in some cases to speed up resolving locking for transactions [#5339](https://github.com/tikv/tikv/pull/5339) +- Optimize the `get_txn_commit_info` process to speed up committing transactions [#5062](https://github.com/tikv/tikv/pull/5062) +- Simplify Raft-related logs [#5425](https://github.com/tikv/tikv/pull/5425) +- Resolve the issue that TiKV exits abnormally in some cases [#5441](https://github.com/tikv/tikv/pull/5441) + +## PD + +- Add the `config-check` option in PD to check whether the PD configuration item is valid [#1725](https://github.com/pingcap/pd/pull/1725) +- Add the `remove-tomestone` command in pd-ctl to support clearing tombstone store records [#1705](https://github.com/pingcap/pd/pull/1705) +- Support actively pushing operators to speed up scheduling [#1686](https://github.com/pingcap/pd/pull/1686) + +## Tools + ++ TiDB Binlog + - Add `worker-count` and `txn-batch` configuration items in Reparo to control the recovery speed [#746](https://github.com/pingcap/tidb-binlog/pull/746) + - Optimize the memory usage of Drainer to improve the parallel execution efficiency [#735](https://github.com/pingcap/tidb-binlog/pull/735) + - Fix the bug that Pump cannot quit normally in some cases [#739](https://github.com/pingcap/tidb-binlog/pull/739) + - Optimize the processing logic of `LevelDB` in Pump to improve the execution efficiency of GC [#720](https://github.com/pingcap/tidb-binlog/pull/720) ++ TiDB Lightning + - Fix the bug that tidb-lightning might crash caused by re-importing data from the checkpoint [#239](https://github.com/pingcap/tidb-lightning/pull/239) + +## TiDB Ansible + +- Update the Spark version to 2.4.3, and update the TiSpark version to 2.2.0 that is compatible with Spark 2.4.3 [#914](https://github.com/pingcap/tidb-ansible/pull/914), [#919](https://github.com/pingcap/tidb-ansible/pull/927) +- Fix the issue that there is a long waiting time when the remote machine password has expired [#937](https://github.com/pingcap/tidb-ansible/pull/937), [#948](https://github.com/pingcap/tidb-ansible/pull/948) diff --git a/v3.0/releases/rn.md b/v3.0/releases/rn.md index 01af34f79290..5014d55c145b 100644 --- a/v3.0/releases/rn.md +++ b/v3.0/releases/rn.md @@ -20,6 +20,7 @@ aliases: ['/docs/releases/rn/'] ## 2.1 +- [2.1.17](/v3.0/releases/2.1.17.md) - [2.1.16](/v3.0/releases/2.1.16.md) - [2.1.15](/v3.0/releases/2.1.15.md) - [2.1.14](/v3.0/releases/2.1.14.md)