cluster-level statistics collec- tion tasks. Before TiDB v6.1.0, the SHOW ANALYZE STATUS statement shows instance- level tasks only, and history task records are cleared after a TiDB restart. Therefore, you cannot consumes a lot of resources and causes cluster stability issues, you have to connect to the target TiDB instance and then run the KILL TIDB ${id}; command to terminate the target connection and operation. In the enable-global-kill configuration is introduced and enabled by default. You can run the kill command in any TiDB instance to terminate a specified connection and operation, without worrying about incorrectly terminating

monitored: node_exporter_port: 9100 blackbox_exporter_port: 9115 server_configs: 87 tidb: instance.tidb_slow_log_threshold: 300 tikv: readpool.storage.use-unified-pool: false readpool.coprocessor 0 码力 | 3572 页 | 84.36 MB | 1 年前

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session: • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground • To specify the TiDB session: • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground • To specify the TiDB with your actual IP addresses. Instance CountIP Configuration TiKV3 10.0.1.1 10.0.1.1 10.0.1.1 Avoid con- flict be- tween the port and the di- rec- tory 104 Instance CountIP Configuration TiDB1 10

typically �→ required manual execution of jeprof to generate a heap �→ profile in the instance environment. Starting from v7.5.0, TiKV �→ enables remote processing of heap profiles. You can now memory usage issues typically required manual execution of jeprof to generate a heap profile in the instance environment. Starting from v7.5.0, TiKV enables remote processing of heap profiles. You can now session: • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground • To specify the TiDB

engine, the partitioned Raft �→ KV. By allowing each data Region to have a dedicated RocksDB �→ instance, it can expand the cluster's storage capacity from TB-level �→ to PB-level and provide more stable Region is independently stored in a separate RocksDB instance. The new storage engine can better control the number and level of files in the RocksDB instance, achieve physical isolation of data operations between session: 107 • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground • To specify the TiDB

schema- �→ name Newly added The schema name where the meta information for each TiDB Lightning instance is stored in the target cluster. The default value is “light- ning_metadata”. 2.2.1.3 Others 40 within 8 hours. The performance of multiple table import is also improved. A single TiDB Lightning instance can support importing at 250 GiB/h, and the overall migration is 8 times faster than the original Profiling (experimental feature) TiDB Dashboard supports the Continuous Profiling feature, which stores instance per- formance analysis results automatically in real time when TiDB clusters are running. You can

If you want to start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following com- mand: tiup playground • If you want to specify If you want to start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following com- mand: tiup playground • If you want to specify serves as an example IP. In your actual deployment, you need to replace the IP with your actual IP. Instance CountIP Configuration TiKV3 10.0.1.1 10.0.1.1 10.0.1.1 Avoid con- flict be- tween the port and

interface to bind the virtual IP to using ha.interface. The virtual IP will be bound to a TiProxy instance only when both of these configuration items are set. For more information, see documentation. ${tag_name} • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground • To specify the TiDB ${tag_name} • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground 95 • To specify the TiDB

empty EndKey #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 ${tag_name} • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground • To specify the TiDB ${tag_name} • To start a TiDB cluster of the latest version with 1 TiDB instance, 1 TiKV instance, 1 PD instance, and 1 TiFlash instance, run the following command: tiup playground 92 • To specify the TiDB

tidb_general_log. However, in previous versions, the content of general logs can only be written to the TiDB instance log along with other information, which is inconvenient for users who need to keep logs for a long general-log-file to a valid filename. The general log follows the same rotation and retention policies as the instance log. In addition, to reduce the disk space occupied by historical log files, TiDB v8.0.0 introduces Configuration file parameters Configuration file Configuration parame- ter Change type Description TiDB instance �→ . �→ tidb �→ _ �→ enable �→ _ �→ collect �→ _ �→ execution �→ _ �→ info Modified Adds a control