I handle the Error 1298: Unknown or incorrect time zone: 'UTC' error when creating the replication task or replicating data to MySQL? · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1194 7.6.4 The start-ts timestamp of the TiCDC task is quite different from the current time. During the execution of this task, replication is in- terrupted and an error [CDC:ErrBufferReachLimit] 1197 7.7.1 How do I choose start-ts when creating a task in TiCDC? · · · · · · · · · 1197 7.7.2 Why can’t some tables be replicated when I create a task in TiCDC? · 1198 7.7.3 How do I view the state of

resource consumption based on the �→ needs of different application systems. This keeps background task �→ consumption at a low level and ensures the quality of online services �→ . 0 码力 | 6705 页 | 110.86 MB | 9 月前

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_priority_ �→ queue, which controls whether priority queues are enabled to optimize the ordering of tasks that automatically collect statistics. In future releases, the priority queue will be the only consistent with the maximum number of conflicting records that can be tolerated in a single import task. • The following features are planned for removal in future versions: • Starting from v8.0.0, TiDB -----------------------------------------------+----------+------+ �→ | id | estRows | actRows | task | access object | �→ execution info �→ �→ | operator info �→ �→ | memory | disk | +-- �→ ----

ze_priority_queue system variable to control whether to enable the priority queue to optimize the ordering of automatic statistics collection tasks. In future versions, the priority queue will become only way to order automatic statistics collection tasks, and the tidb_enable_auto_analyze_priority_queue system variable will be deprecated. • In v8.0.0, TiDB introduces the tidb_enable_parallel_hashagg_spill consistent with the maximum number of conflicting records that can be tolerated in a single import task. • The following features are planned for removal in future versions: • Starting from v8.0.0, TiDB

href="https://docs.pingcap.com/tidb/v8.1/system-variables#tidb_ �→ enable_auto_analyze_priority_queue-new-in-v800">priority queue �→ for auto analyze, making the process less rigid and 38 �→ enhancing that an ADD INDEX or IMPORT INTO task is executed only by one TiDB node by default. Starting from v8.1.0, TiDB enables this feature by default (tidb_enable_dist_task defaults to ON). When enabled, the the DXF can schedule multiple TiDB nodes to execute the same ADD INDEX or IMPORT INTO task in parallel, fully utilizing the resources of the TiDB cluster and greatly improving the performance of these tasks

href="https://docs.pingcap.com/tidb/v8.0/system-variables �→ #tidb_enable_auto_analyze_priority_queue-new-in-v800">priority queue �→ for auto analyze, making the process less rigid and �→ enhancing available in a future release. For more information, see documentation. • Introduce the priority queue for automatic statistics collection #50132 @hi-rustin Maintaining optimizer statistics up-to-date statistics collection checks the status of statis- tics for all objects, and adds unhealthy objects to a queue for sequential collections. In previous versions, the order is random, which could result in excessive

loading statistics feature can process con- currently. The default value is 5. TiDB stats-load �→ -queue- �→ size Newly added Controls the maximum number of column requests that the TiDB syn- chronously Lightning task-info- �→ schema- �→ name Newly added Specifies the name of the database where duplicated data is stored when TiDB Lightning detects conflicts. By default, the value is “light- ning_task_info” compatibility issue of sql mode #3810 * Fix the potential panic issue that occurs when a replication task is removed #3128 * Fix the issue of panic and data inconsistency that occurs when outputting the

changed from 5m to 10m. TiKV con- figuration file server. �→ raft- �→ client- �→ queue- �→ size Newly added Specifies the queue size of the Raft messages in TiKV. The default value is 8192. TiKV con- figuration located. Assume that you create data directories on both sdb and sdc disks: cat /sys/block/sd[bc]/queue/scheduler 113 noop [deadline] cfq noop [deadline] cfq Note: If noop [deadline] cfq is output, the d0946606d79f90025f3e09a0c1fc035", ATTR{queue/scheduler}=" �→ noop" ACTION=="add|change", SUBSYSTEM=="block", ENV{ID_SERIAL}=="36 �→ d0946606d79f90025f3e09a0c1f9e81", ATTR{queue/scheduler}=" �→ noop" 6. Apply

href="https://docs.pingcap.com/tidb/v8.1/system- �→ variables#tidb_enable_auto_analyze_priority_queue-new-in-v800"> �→ priority queue for auto analyze, making the process 37 �→ less rigid and enhancing that an ADD INDEX or IMPORT INTO task is executed only by one TiDB node by default. Starting from v8.1.0, TiDB enables this feature by default (tidb_enable_dist_task defaults to ON). When enabled, the the DXF can schedule multiple TiDB nodes to execute the same ADD INDEX or IMPORT INTO task in parallel, fully utilizing the resources of the TiDB cluster and greatly improving the performance of these tasks

tools * the cluster restored using TiDB ecosystem tools * the downstream cluster in a replication task using TiDB ecosystem tools – For the compatibility information of temporary tables, refer to Compatibility Prechecks TiDB Lightning provides the ability to check the configuration before running a migra- tion task. It is enabled by default. This feature automatically performs some routine checks for disk space links, memory GC, and stock data scanning processes #2735 #1606 #3000 #2985 #2156 * When the sync task status is normal, no more historical error messages are displayed to avoid misleading users #2242