Skip to content

Commit

Permalink
Preview PR pingcap/docs#19336 and this preview is triggered from commit
Browse files Browse the repository at this point in the history
  • Loading branch information
Docsite Preview Bot committed Dec 3, 2024
1 parent 808e8bb commit 73926eb
Showing 1 changed file with 4 additions and 4 deletions.
8 changes: 4 additions & 4 deletions markdown-pages/en/tidb/master/releases/release-8.5.0.md
Original file line number Diff line number Diff line change
Expand Up @@ -232,11 +232,11 @@ Compared with the previous LTS 8.1.0, 8.5.0 includes new features, improvements,

The following features are planned for deprecation in future versions:

* TiDB introduces the system variable [`tidb_enable_auto_analyze_priority_queue`](/system-variables.md#tidb_enable_auto_analyze_priority_queue-new-in-v800), 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 way to order tasks for automatically collecting statistics, so this system variable will be deprecated.
* TiDB introduces the system variable [`tidb_enable_async_merge_global_stats`](/system-variables.md#tidb_enable_async_merge_global_stats-new-in-v750) in v7.5.0. You can use it to set TiDB to use asynchronous merging of partition statistics to avoid OOM issues. In future releases, partition statistics will be merged asynchronously, so this system variable will be deprecated.
* In v8.0.0, TiDB introduces the [`tidb_enable_auto_analyze_priority_queue`](/system-variables.md#tidb_enable_auto_analyze_priority_queue-new-in-v800) system variable to control 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 way to order tasks for automatically collecting statistics, so this system variable will be deprecated.
* In v7.5.0, TiDB introduces the [`tidb_enable_async_merge_global_stats`](/system-variables.md#tidb_enable_async_merge_global_stats-new-in-v750) system variable. You can use it to set TiDB to use asynchronous merging of partition statistics to avoid OOM issues. In future releases, partition statistics will be merged asynchronously, so this system variable will be deprecated.
* It is planned to redesign [the automatic evolution of execution plan bindings](/sql-plan-management.md#baseline-evolution) in subsequent releases, and the related variables and behavior will change.
* In v8.0.0, TiDB introduces the [`tidb_enable_parallel_hashagg_spill`](/system-variables.md#tidb_enable_parallel_hashagg_spill-new-in-v800) system variable to control whether TiDB supports disk spill for the concurrent HashAgg algorithm. In future versions, the [`tidb_enable_parallel_hashagg_spill`](/system-variables.md#tidb_enable_parallel_hashagg_spill-new-in-v800) system variable will be deprecated.
* In v5.1, TiDB introduces the system variable [`tidb_partition_prune_mode`](/system-variables.md#tidb_partition_prune_mode-new-in-v51) to set whether to enable the dynamic pruning mode for partitioned tables. Starting from v8.5.0, a warning is returned when you set this variable to `static` or `static-only`. In future versions, this system variable will be deprecated.
* In v8.0.0, TiDB introduces the [`tidb_enable_parallel_hashagg_spill`](/system-variables.md#tidb_enable_parallel_hashagg_spill-new-in-v800) system variable to control whether TiDB supports disk spill for the concurrent HashAgg algorithm. In future versions, this system variable will be deprecated.
* In v5.1, TiDB introduces the [`tidb_partition_prune_mode`](/system-variables.md#tidb_partition_prune_mode-new-in-v51) system variable to control whether to enable the dynamic pruning mode for partitioned tables. Starting from v8.5.0, a warning is returned when you set this variable to `static` or `static-only`. In future versions, this system variable will be deprecated.
* The TiDB Lightning parameter [`conflict.max-record-rows`](/tidb-lightning/tidb-lightning-configuration.md#tidb-lightning-task) is planned for deprecation in a future release and will be subsequently removed. This parameter will be replaced by [`conflict.threshold`](/tidb-lightning/tidb-lightning-configuration.md#tidb-lightning-task), which means that the maximum number of conflicting records is consistent with the maximum number of conflicting records that can be tolerated in a single import task.
* Starting from v6.3.0, partitioned tables use [dynamic pruning mode](/partitioned-table.md#dynamic-pruning-mode) by default. Compared with static pruning mode, dynamic pruning mode supports features such as IndexJoin and plan cache with better performance. Therefore, static pruning mode will be deprecated.

Expand Down

0 comments on commit 73926eb

Please sign in to comment.