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Update statistics.md auto table width and health threshold #1348

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Original file line number Diff line number Diff line change
Expand Up @@ -392,8 +392,8 @@ DROP STATS table_name
| auto_analyze_end_time | 自动统计信息收集的结束时间 | 23:59:59 |
| enable_auto_analyze | 是否开启自动收集功能 | TRUE |
| huge_table_default_sample_rows | 对大表进行采样时的行数 | 4194304 |
| table_stats_health_threshold | 取值范围 0-100,表示自上次统计信息收集后,数据更新达到 (100 - table_stats_health_threshold)%时,认为统计信息已过时 | 60 |
| auto_analyze_table_width_threshold | 控制自动统计信息收集处理的最大表宽度,超过此列数的表不参与自动统计信息收集 | 100 |
| table_stats_health_threshold | 取值范围 0-100,表示自上次统计信息收集后,数据更新达到 (100 - table_stats_health_threshold)%时,认为统计信息已过时 | 90 |
| auto_analyze_table_width_threshold | 控制自动统计信息收集处理的最大表宽度,超过此列数的表不参与自动统计信息收集 | 300 |
| enable_get_row_count_from_file_list | Hive 表是否通过文件大小来估算行数 | FALSE(2.1.5 之后默认为 TRUE) |

### FE 配置项
Expand Down Expand Up @@ -504,4 +504,4 @@ ADMIN DIAGNOSE TABLET tablet_id

对于某些特殊表,如分区众多的表或单个 Tablet 体积庞大的表,可能会出现内存占用较多的情况。

建议用户在建表时合理规划 Tablet 数量,避免产生超大 Tablet。若 Tablet 结构不易调整,建议在系统低峰期开启自动收集,或于低峰期手动收集这些大表,以免在高峰期影响业务运行。在 Doris 3.x 系列中,我们将针对此类场景进行优化。
建议用户在建表时合理规划 Tablet 数量,避免产生超大 Tablet。若 Tablet 结构不易调整,建议在系统低峰期开启自动收集,或于低峰期手动收集这些大表,以免在高峰期影响业务运行。在 Doris 3.x 系列中,我们将针对此类场景进行优化。
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