your applications to TiDB, you do not need to change a single line of code in many cases or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help directory for plugins is changed from "" to /data/deploy/plugin. • The DM code is migrated to the folder “dm” in TiCDC code repository. Now DM follows TiDB in version numbers. Next to v2.0.x, the new cost too much CPU #4071 – Fix the data race issue that might occur when setting configurations of hot Region scheduler #4159 – Fix slow leader election caused by stucked Region syncer #3936 • TiFlash

your applications to TiDB, you do not need to change a single line of code in many cases or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help Others • An interface is added between TiDB and PD. When you use the information_schema �→ .TIDB_HOT_REGIONS_HISTORY system table, TiDB needs to use PD in the corre- sponding version. • TiDB Server, promoting the robust development of TiDB. We sincerely appreciate all contributors who have submitted code, written and translated documents for TiDB. 2.8.1 TiDB developers TiDB developers contribute to

your applications to TiDB, you do not need to change a single line of code in many cases or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help readability and execution efficiency of SQL statements. • Support changing column types online to improve code development flexibility. • Introduce a new statistics type to improve query stability, which is enabled promoting the robust development of TiDB. We sincerely appreciate all contributors who have submitted code, written and translated documents for TiDB. 2.8.1 TiDB developers TiDB developers contribute to

your applications to TiDB, you do not need to change a single line of code in many cases or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help features #26333 • PD – Add more QPS dimensions for hot Region scheduling, and support adjusting the priority of the scheduling #3869 – Support hot Region balance scheduling for the write hotspot of TiFlash Shuffled Hash Aggregation calculation in the MPP mode when a new collation is enabled – Optimize basic code to improve MPP performance – Support casting the STRING type to the DOUBLE type – Optimize the non-joined

migrate applications to TiDB, you do not need to change a single line of code in many cases, or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help services. This feature improves the capability of the PD cluster to �→ handle <code>GetRegioncode> and <code>ScanRegionscode> requests �→ in clusters with a large number of TiDB nodes and Regions, thereby promoting the robust development of TiDB. We sincerely appreciate all contributors who have submitted code, written and translated documents for TiDB. 2.6.1 TiDB developers TiDB developers contribute to

your applications to TiDB, you do not need to change a single line of code in many cases or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help reports the invalid store ID 0 error when using Fol- lower Read #12478 • PD • Fix the wrong status code of not leader #4797 • Fix a bug of TSO fallback in some corner cases #4884 • Fix the issue that a promoting the robust development of TiDB. We sincerely appreciate all contributors who have submitted code, written and translated documents for TiDB. 2.8.1 TiDB developers TiDB developers contribute to

your applications to TiDB, you do not need to change a single line of code in many cases or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help @LykxSassinator • Reduce the requested size of memory usage by code optimization #13827 @BusyJay • Introduce the Raft extension to improve code extensibility #13827 @BusyJay • Support using tikv-ctl to query executing the reset �→ -to-version command #13829 @tabokie • PD • Fix the issue that the balance-hot-region-scheduler configuration is not per- sisted if not modified #5701 @HunDunDM • Fix the issue

migrate applications to TiDB, you do not need to change a single line of code in many cases, or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help performance by more than 50%. 35 Load-based replica read In system-variables#tidb_load_based_replica_read_threshold-new-in-v700" �→ target="_blank"><code>tidb_load_based_replica_read_thresholdcode>. TiKV supports0 码力 | 5716 页 | 104.74 MB | 1 年前

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migrate applications to TiDB, you do not need to change a single line of code in many cases, or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help Feature Description Scalability and Performance Support running multiple <code>ADD INDEXcode> statements in parallel This feature allows for concurrent jobs to add multiple single table. Previously, it would take the time of X plus the time �→ of Y to execute two <code>ADD INDEXcode> statements simultaneously �→ (X and Y). With this feature, adding two indexes X and Y in

migrate applications to TiDB, you do not need to change a single line of code in many cases, or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help 4.0 introduces �→ the number of keys processed by the Coprocessor (<code>PROCESSED_KEYS �→ code>) and request units (<code>RUcode>) as identifying �→ conditions, and puts identified queries into the within a single automatic statistics �→ collection task using the system variable <code>tidb_auto_analyze_ �→ concurrencycode>. TiDB automatically determines the concurrency of �→ scanning tasks based on