search method based on data semantics, which provides �→ more relevant search results. As one of the core functions of AI and �→ large language models (LLMs), vector search can be used in various �→ scenarios search method based on data semantics, which provides more relevant search results. As one of the core functions of AI and large language models (LLMs), vector search can be used in various scenarios such required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the

search method based on data semantics, which provides �→ more relevant search results. As one of the core functions of AI and �→ large language models (LLMs), vector search can be used in various �→ scenarios search method based on data semantics, which provides more relevant search results. As one of the core functions of AI and large language models (LLMs), vector search can be used in various scenarios such required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the

significantly �→ improve the restore speed of large datasets in large-scale clusters. �→ Real-world tests show that this feature can saturate the download �→ bandwidth, with the download speed improving by enable-telemetry, and the PD configuration item enable-telemetry are deprecated and no longer functional. • The ADMIN SHOW TELEMETRY syntax is removed. • The TELEMETRY and TELEMETRY_ID keywords are removed required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the

sists the vari- able value to the cluster. Changes the default value from OFF to ON after further tests, which means that the op- timizer is al- lowed to push Projection �→ down to the TiKV copro- cessor required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the maintains compatibility with its newer versions. PingCAP will pe- riodically conduct compatibility tests with the latest version of Third- party tools supported by TiDB. • Compatible: indicates that because

required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the maintains compatibility with its newer versions. PingCAP will pe- riodically conduct compatibility tests with the latest version of Third- party tools supported by TiDB. • Compatible: indicates that because : org.hibernate.orm hibernate-core 6.2.3.Final mysql

tidb_enable_outer_join_reorder �→ Modified Changes the default value from OFF to ON after further tests, mean- ing that the sup- port of Outer Join for the Join Re- order algo- rithm is en- abled by de- Description tidb_cost_model_version �→ Modified Changes the default value from 1 to 2 after further tests, mean- ing that Cost Model Version 2 is used for index selec- tion and op- erator selec- tion by de- the default value from ON to OFF. Be- cause the GC- aware mem- ory track is found inaccu- rate in tests and causes too large ana- lyzed mem- ory size tracked, the mem- ory track is dis- abled. In ad- dition

use this feature with TiCDC. After pausing data replication and conducting pre-online read-write tests in your down- stream TiDB cluster, this feature allows the cluster to gracefully and quickly roll tidb_auto_analyze_partition_batch_size �→ Modified Changes the default value from 1 to 128 after further tests. tidb_sysproc_scan_concurrency �→ Modified In a large- scale cluster, the concur- rency of scan required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the

from 1 to 2 after further tests. 42 Variable name Change type Description tidb_build_stats_concurrency �→ Modified Changes the default value from 4 to 2 after further tests. tidb_merge_partition_stats_concurrency TiCDC case- �→ sensitive �→ Modified Changes the default value from true to false after further tests, which means that the table names and database names in the TiCDC configu- ration file are case- insensitive Improve the performance of adding indexes with tidb_ddl_enable_fast_reorg �→ enabled. In internal tests, v7.5.0 improves the performance by up to 62.5% compared with v6.5.0. #47757 @tangenta • TiKV •

trigger- ing load- based replica read. Changes the default value from "0s" to "1s" after further tests. 50 Variable name Change type Description tidb_opt_enable_late_materialization �→ Modified Changes partition �→ - �→ separator �→ Modified Changes the default value from false to true after further tests, meaning that par- titions in a table are stored in separate directo- ries by default. It is recom- required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the

significantly �→ improve the restore speed of large datasets in large-scale clusters. �→ Real-world tests show that this feature can saturate the download �→ bandwidth, with the download speed improving by required for application development. • Understand the way applications interact with TiDB. • To learn core components and concepts of building up the distributed database TiDB and TiDB Cloud, refer to the maintains compatibility with its newer versions. PingCAP will pe- riodically conduct compatibility tests with the latest version of Third- party tools supported by TiDB. • Compatible: indicates that because