The server with the fewest �→ connections receives the connection. "leastconn" is recommended �→ where long sessions are expected, such as LDAP, SQL and TSE, rather �→ than protocols using short sessions The server with the fewest �→ connections receives the connection. "leastconn" is recommended �→ where long sessions are expected, such as LDAP, SQL and TSE, rather �→ than protocols using short sessions unsupported partition type, TiDB returns Warning: Unsupported partition type, treat as �→ normal table, where %s is a specific partition type. • Table partitioning supports ADD, DROP, and TRUNCATE operations

availability and strong consistency with large-scale data. TiDB Self-Managed is a product option of TiDB, where users or organizations can deploy and manage TiDB on their own infrastructure with complete flexibility from v8.4.0, the data type is changed to FLOAT64, and the mini- mum value becomes 0.05. In scenarios where network jitter occurs fre- quently, you can reduce the impact of network jitter on perfor- mance by tently. TiKV raft- �→ engine �→ . �→ spill �→ -dir Newly added Controls the sec- ondary directory where TiKV instances store Raft log files for support- ing multi- disk storage of Raft log files. 72 Configuration

availability and strong consistency with large-scale data. TiDB Self-Managed is a product option of TiDB, where users or organizations can deploy and manage TiDB on their own infrastructure with complete flexibility from v8.4.0, the data type is changed to FLOAT64, and the mini- mum value becomes 0.05. In scenarios where network jitter occurs fre- quently, you can reduce the impact of network jitter on perfor- mance by tently. TiKV raft- �→ engine �→ . �→ spill �→ -dir Newly added Controls the sec- ondary directory where TiKV instances store Raft log files for support- ing multi- disk storage of Raft log files. 67 Configuration

#54337 @ghazalfamilyusa • Use index order to avoid extra sorting operations for SQL queries like WHERE idx �→ _col_1 IS NULL ORDER BY idx_col_2 #54188 @ari-e • Display analyzed indexes in the mysql.analyze_jobs shared allocator, the id increments by 2 each time. This behavior changes in MySQL compatibility mode, where there is no shared allocator and therefore no skipping of numbers. Note: The AUTO_INCREMENT attribute unsupported partition type, TiDB returns Warning: Unsupported partition type %s, treat �→ as normal table, where %s is the specific unsupported partition type. • Range, Range COLUMNS, List, and List COLUMNS partitioned

for creating numerous tables. �→ This acceleration is particularly noteworthy in SaaS scenarios, where �→ the prevalence of high volumes of tables, ranging from tens to �→ hundreds of thousands, is a serves as an enhancement to Garbage Collection (GC) to eliminate redundant data versions. In scenarios where application activity shows obvious peaks and valleys, you 39 can use this feature to perform data CREATE GLOBAL BINDING FOR USING SELECT /*+ merge_join(t1, t2) */ t1.id, t2.amount FROM *.t1, *.t2 WHERE t1.id = t2.id; In addition, cross-database binding can effectively mitigate SQL performance issues

checkpoint must be refreshed every few minutes. This is unacceptable for some business scenarios where the cutover time is limited to tens of seconds. With the introduction of real-time updating of checkpoint shared allocator, the id increments by 2 each time. This behavior changes in MySQL compatibility mode, where there is no shared allocator and therefore no skipping of numbers. Note: The AUTO_INCREMENT attribute unsupported partition type, TiDB returns Warning: Unsupported partition �→ type %s, treat as normal table, where %s is the specific unsupported parti- tion type. • Range, Range COLUMNS, List, and List COLUMNS partitioned

value is changed from 16 to 64. TiD Lightning meta- �→ schema- �→ name Newly added The schema name where the meta information for each TiDB Lightning instance is stored in the target cluster. The default The server with the fewest �→ connections receives the connection. "leastconn" is recommended �→ where long sessions are expected, such as LDAP, SQL and TSE, rather �→ than protocols using short sessions The server with the fewest �→ connections receives the connection. "leastconn" is recommended �→ where long sessions are expected, such as LDAP, SQL and TSE, rather �→ than protocols using short sessions

availability and strong consistency with large-scale data. TiDB Self-Managed is a product option of TiDB, where users or organizations can deploy and manage TiDB on their own infrastructure with complete flexibility for creating numerous tables. �→ This acceleration is particularly noteworthy in SaaS scenarios, where �→ the prevalence of high volumes of tables, ranging from tens to �→ hundreds of thousands, is a ments as soon as possible. This saves time and computa- tional resources by avoiding the scenario where a large amount of con- flicting data is discov- ered after the import, caused by ab- normal data sources

#52574 @3pointer 59 • Fix the issue that a PD connection failure could cause the TiDB instance where the log backup advancer owner is located to panic #52597 @YuJuncen • Fix the issue that log backup shared allocator, the id increments by 2 each time. This behavior changes in MySQL compatibility mode, where there is no shared allocator and therefore no skipping of numbers. Note: The AUTO_INCREMENT attribute unsupported partition type, TiDB returns Warning: Unsupported partition type %s, treat �→ as normal table, where %s is the specific unsupported partition type. • Range, Range COLUMNS, List, and List COLUMNS partitioned

This enhancement significantly reduces total RPCs in TiKV batch-get �→ operations. In situations where data is highly dispersed and the gRPC �→ thread pool has insufficient resources, batching coprocessor ion system variable defaults to OFF). When processing a SELECT statement with filter conditions (WHERE clause), TiFlash reads all the data from the columns required by the query, and then filters and aggregates engine is raft-kv2 #6297 @bufferflies • Add a leader health check mechanism. When the PD server where the etcd leader is located cannot be elected as the leader, PD actively switches the etcd leader to