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docs: add database options 'stt_trigger' and 'tsdb_pagesize'

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Xiaoyu Wang 2023-01-11 17:24:36 +08:00
parent 573f18f24c
commit 12fb3a2164
2 changed files with 10 additions and 2 deletions
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6
docs/en/12-taos-sql/02-database.md
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@ -71,7 +71,7 @@ database_option: {
- SINGLE_STABLE: specifies whether the database can contain more than one supertable. - SINGLE_STABLE: specifies whether the database can contain more than one supertable.
- 0: The database can contain multiple supertables. - 0: The database can contain multiple supertables.
- 1: The database can contain only one supertable. - 1: The database can contain only one supertable.
- STT_TRIGGER: specifies the number of file merges triggered by flushed files. The default is 8, ranging from 1 to 16. - STT_TRIGGER: specifies the number of file merges triggered by flushed files. The default is 8, ranging from 1 to 16. For high-frequency scenarios with few tables, it is recommended to use the default configuration or a smaller value for this parameter; For multi-table low-frequency scenarios, it is recommended to configure this parameter with a larger value.
- TABLE_PREFIX：The prefix length in the table name that is ignored when distributing table to vnode based on table name. - TABLE_PREFIX：The prefix length in the table name that is ignored when distributing table to vnode based on table name.
- TABLE_SUFFIX：The suffix length in the table name that is ignored when distributing table to vnode based on table name. - TABLE_SUFFIX：The suffix length in the table name that is ignored when distributing table to vnode based on table name.
- TSDB_PAGESIZE: The page size of the data storage engine in a vnode. The unit is KB. The default is 4 KB. The range is 1 to 16384, that is, 1 KB to 16 MB. - TSDB_PAGESIZE: The page size of the data storage engine in a vnode. The unit is KB. The default is 4 KB. The range is 1 to 16384, that is, 1 KB to 16 MB.
@ -116,6 +116,10 @@ alter_database_options:
alter_database_option: { alter_database_option: {
CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'} CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'}
| CACHESIZE value | CACHESIZE value
| BUFFER value
| PAGES value
| REPLICA value
| STT_TRIGGER value
| WAL_LEVEL value | WAL_LEVEL value
| WAL_FSYNC_PERIOD value | WAL_FSYNC_PERIOD value
| KEEP value | KEEP value

6
docs/zh/12-taos-sql/02-database.md
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@ -71,7 +71,7 @@ database_option: {
- SINGLE_STABLE：表示此数据库中是否只可以创建一个超级表，用于超级表列非常多的情况。 - SINGLE_STABLE：表示此数据库中是否只可以创建一个超级表，用于超级表列非常多的情况。
- 0：表示可以创建多张超级表。 - 0：表示可以创建多张超级表。
- 1：表示只可以创建一张超级表。 - 1：表示只可以创建一张超级表。
- STT_TRIGGER：表示落盘文件触发文件合并的个数。默认为 8，范围 1 到 16。 - STT_TRIGGER：表示落盘文件触发文件合并的个数。默认为 1，范围 1 到 16。对于少表高频场景，此参数建议使用默认配置，或较小的值；而对于多表低频场景，此参数建议配置较大的值。
- TABLE_PREFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的前缀的长度。 - TABLE_PREFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的前缀的长度。
- TABLE_SUFFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的后缀的长度。 - TABLE_SUFFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的后缀的长度。
- TSDB_PAGESIZE：一个 VNODE 中时序数据存储引擎的页大小，单位为 KB，默认为 4 KB。范围为 1 到 16384，即 1 KB到 16 MB。 - TSDB_PAGESIZE：一个 VNODE 中时序数据存储引擎的页大小，单位为 KB，默认为 4 KB。范围为 1 到 16384，即 1 KB到 16 MB。
@ -116,6 +116,10 @@ alter_database_options:
alter_database_option: { alter_database_option: {
CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'} CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'}
| CACHESIZE value | CACHESIZE value
| BUFFER value
| PAGES value
| REPLICA value
| STT_TRIGGER value
| WAL_LEVEL value | WAL_LEVEL value
| WAL_FSYNC_PERIOD value | WAL_FSYNC_PERIOD value
| KEEP value | KEEP value