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[doc](stats) add auto_analyze_table_width_threshold description. (#27818)

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Jibing-Li
2023-11-30 18:15:11 +08:00
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35
docs/en/docs/query-acceleration/statistics.md
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@ -283,23 +283,23 @@ mysql> KILL ANALYZE 52357;
<br/>
```markdown
## 3. Session Variables and Configuration Options
---
### 3.1 Session Variables
| Session Variable | Description | Default Value |
| ----------------------------- | -------------------------------------------- | ------------- |
| auto_analyze_start_time | Start time for automatic statistics collection | 00:00:00 |
| auto_analyze_end_time | End time for automatic statistics collection | 23:59:59 |
| enable_auto_analyze | Enable automatic collection functionality | true |
| huge_table_default_sample_rows | Sampling rows for large tables | 4194304 |
| huge_table_lower_bound_size_in_bytes | Tables with size greater than this value will be automatically sampled during collection of statistics | 5368709120 |
| huge_table_auto_analyze_interval_in_millis | Controls the minimum time interval for automatic ANALYZE on large tables. Tables with sizes greater than `huge_table_lower_bound_size_in_bytes * 5` will be ANALYZEed only once within this time interval. | 43200000 |
| table_stats_health_threshold | Ranges from 0 to 100. If data updates since the last statistics collection exceed `(100 - table_stats_health_threshold)%`, the table's statistics are considered outdated. | 60 |
| analyze_timeout | Controls the timeout for synchronous ANALYZE in seconds | 43200 |
|Session Variable|Description|Default Value|
|---|---|---|
|auto_analyze_start_time|Start time for automatic statistics collection|00:00:00|
|auto_analyze_end_time|End time for automatic statistics collection|23:59:59|
|enable_auto_analyze|Enable automatic collection functionality|true|
|huge_table_default_sample_rows|Sampling rows for large tables|4194304|
|huge_table_lower_bound_size_in_bytes|Tables with size greater than this value will be automatically sampled during collection of statistics|5368709120|
|huge_table_auto_analyze_interval_in_millis|Controls the minimum time interval for automatic ANALYZE on large tables. Tables with sizes greater than `huge_table_lower_bound_size_in_bytes * 5` will be ANALYZEed only once within this time interval.|43200000|
|table_stats_health_threshold|Ranges from 0 to 100. If data updates since the last statistics collection exceed `(100 - table_stats_health_threshold)%`, the table's statistics are considered outdated.|60|
|analyze_timeout|Controls the timeout for synchronous ANALYZE in seconds|43200|
|auto_analyze_table_width_threshold|Controls the maximum width of table that will be auto analyzed. Table with more columns than this value will not be auto analyzed.|70|
<br/>
@ -307,15 +307,14 @@ mysql> KILL ANALYZE 52357;
The following FE configuration options are typically not a major concern:
| FE Configuration Option | Description | Default Value |
| ---------------------------------- | ---------------------------------------- | ------------- |
| analyze_record_limit | Controls the persistence of statistics job execution records | 20000 |
| stats_cache_size | FE-side statistics cache entries | 500,000 |
| statistics_simultaneously_running_task_num | Number of asynchronous jobs that can run simultaneously | 3 |
| statistics_sql_mem_limit_in_bytes | Controls the amount of BE memory each statistics SQL can use | 2,147,483,648 bytes (2 GiB) |
|FE Configuration Option|Description|Default Value|
|---|---|---|
|analyze_record_limit|Controls the persistence of statistics job execution records|20000|
|stats_cache_size|FE-side statistics cache entries|500,000|
|statistics_simultaneously_running_task_num|Number of asynchronous jobs that can run simultaneously|3|
|statistics_sql_mem_limit_in_bytes|Controls the amount of BE memory each statistics SQL can use|2,147,483,648 bytes (2 GiB)|
<br/>
```
## 4. Common Issues

1
docs/zh-CN/docs/query-acceleration/statistics.md
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@ -303,6 +303,7 @@ mysql> KILL ANALYZE 52357;
|huge_table_auto_analyze_interval_in_millis|控制对大表的自动ANALYZE的最小时间间隔，在该时间间隔内大小超过huge_table_lower_bound_size_in_bytes * 5的表仅ANALYZE一次|43200000|
|table_stats_health_threshold|取值在0-100之间，当自上次统计信息收集操作之后，数据更新量达到 (100 - table_stats_health_threshold)% ，认为该表的统计信息已过时|60|
|analyze_timeout|控制ANALYZE超时时间，单位为秒|43200|
|auto_analyze_table_width_threshold|控制自动统计信息收集处理的最大表宽度，列数大于该值的表不会参与自动统计信息收集|70|
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