on the num- ber of pass- word changes. 56 Variable name Change type Description password_reuse_interval �→ Newly added This vari- able is used to estab- lish a pass- word reuse policy that allows TiDB cally stop clean- ing up expired data. 65 Variable name Change type Description tidb_ttl_job_run_interval �→ Newly added This vari- able is used to con- trol the schedul- ing inter- val of the TTL job Configuration file Configuration parame- ter Change type Description TiKV cdc.min �→ -ts- �→ interval �→ Modified To reduce CDC latency, the default value is changed from 1s to 200ms. TiKV memory-

data #49174 @glorv • Fix the issue that when adding a large interval to a date, it returns an incorrect result. After the fix, an interval with an invalid prefix or the string true is treated as zero Dynamic pruning Y Y Y Y Y E E E E N N Range COLUMNS partitioning Y Y Y Y N N N N N N N Range INTERVAL partitioning Y Y Y E N N N N N N N Convert a partitioned table to a non-partitioned table Y Y N page. 2. In the SQL Editor > MySQL Session section, configure the DBMS connection read timeout interval (in seconds) option. This sets the maximum amount of time (in seconds) that a query can take before

of the changefeed’s 41 sync-point-interval configuration. This change lets you align Syncpoints across multiple changefeeds that have the same sync-point-interval configuration, simpli- fying and improving the issue that CDC and log-backup do not limit the timeout of check_leader using the advance-ts-interval configuration, causing the resolved_ts lag to be too large when TiKV restarts normally in some cases N N Dynamic pruning Y Y Y Y Y Y E E E E Range COLUMNS partitioning Y Y Y Y Y N N N N N Range INTERVAL partitioning Y Y Y Y E N N N N N Convert a partitioned table to a non-partitioned table Y Y Y N

file Configuration parame- ter Change type Description TiKV raftstore �→ . �→ inspect �→ - �→ interval �→ Modified Changes the default value from 500ms to 100ms after op- timizing the algo- rithm to N N Dynamic pruning Y Y Y Y E E E E N N Range COLUMNS partitioning Y Y Y N N N N N N N Range INTERVAL partitioning Y Y E N N N N N N N Convert a partitioned table to a non-partitioned table Y N N N page. 2. In the SQL Editor > MySQL Session section, configure the DBMS connection read timeout interval (in seconds) option. This sets the maximum amount of time (in seconds) that a query can take before

panic during the startup of PD microservices #8406 @HuSharp • Fix the issue that the split-merge-interval configuration item might not take effect when you modify its value repeatedly (such as changing Dynamic pruning Y Y Y Y Y Y Y E E E E Range COLUMNS partitioning Y Y Y Y Y Y N N N N N Range INTERVAL partitioning Y Y Y Y Y E N N N N N Convert a partitioned table to a non-partitioned table Y Y Y page. 2. In the SQL Editor > MySQL Session section, configure the DBMS connection read timeout interval (in seconds) option. This sets the maximum amount of time (in seconds) that a query can take before

come online after the split and scatter operations. The default value is 1800 and the maximum retry interval is two seconds. The number of retries is not increased if any Region becomes online between retries information, see documentation. • The syntax of Range INTERVAL partitioning becomes generally available (GA) #35683 @mjonss The syntax of Range INTERVAL partitioning (introduced in v6.3.0) becomes GA. With With this syntax, you can define Range partitioning by a desired interval without enumerating all partitions, which drastically reduces the length of Range partitioning DDL statements. The syntax is equivalent

raft- �→ msg- �→ flush- �→ interval �→ Newly added Determines the interval at which Raft messages are sent in batches. The Raft messages in batches are sent at every interval specified by this configu- 0. 37 Configuration file Configuration item Change type Description PD patrol- �→ region- �→ interval �→ Modified Controls the running frequency at which repli- caChecker checks the health state of command to perform the test: sysbench $testname \ --threads=$threads \ --time=1200 \ --report-interval=1 \ --rand-type=uniform \ --db-driver=mysql \ --mysql-db=sbtest \ --mysql-host=$aws_nlb_host \

reduce the impact of network jitter on perfor- mance by setting a smaller value to shorten the retry interval. 69 Configuration file or compo- nent Configuration parame- ter Change type Description TiDB TiFlash #9444 @windtalker • Tools • Backup & Restore (BR) • Fix the issue that the PITR checkpoint interval in monitoring abnormally in- creased when TiDB nodes stopped, which does not reflect the actual Dynamic pruning Y Y Y Y Y Y Y Y E E E E Range COLUMNS partitioning Y Y Y Y Y Y Y N N N N N Range INTERVAL partitioning Y Y Y Y Y Y E N N N N N Convert a partitioned table to a non-partitioned table Y Y

N N N N Dynamic pruning Y Y Y Y Y E E E E Range COLUMNS partitioning Y Y Y Y N N N N N Range INTERVAL partitioning Y Y Y E N N N N N Convert a partitioned table to a non-partitioned table Y Y N N N page. 2. In the SQL Editor > MySQL Session section, configure the DBMS connection read timeout interval (in seconds) option. This sets the maximum amount of time (in seconds) that a query can take before attribute: CREATE TABLE t1 ( id int PRIMARY KEY, created_at TIMESTAMP ) TTL = `created_at` + INTERVAL 3 MONTH; The preceding example creates a table t1 and specifies created_at as the TTL times- tamp

reduce the impact of network jitter on perfor- mance by setting a smaller value to shorten the retry interval. 64 Configuration file or compo- nent Configuration parame- ter Change type Description TiDB TiFlash #9444 @windtalker • Tools • Backup & Restore (BR) • Fix the issue that the PITR checkpoint interval in monitoring abnormally in- creased when TiDB nodes stopped, which does not reflect the actual Dynamic pruning Y Y Y Y Y Y Y Y E E E E Range COLUMNS partitioning Y Y Y Y Y Y Y N N N N N Range INTERVAL partitioning Y Y Y Y Y Y E N N N N N Convert a partitioned table to a non-partitioned table Y Y