Metrics
Amoro build a metrics system to measure the behaviours of table management processes, like how long has it been since a table last performed self-optimizing process, and how much resources does a optimizer group currently has?
There are two types of metrics provided in the Amoro metric system: Gauge and Counter.
- Gauge: Provides a value of any type at a point in time.
- Counter: Used to count values by incrementing and decrementing.
Amoro has supported built-in metrics to measure status of table self-optimizing processes and optimizer resources, which can be reported to external metric system like Prometheus etc.
Self-optimizing metrics
| Metric Name | Type | Tags | Description |
|---|---|---|---|
| table_optimizing_status_idle_duration_mills | Gauge | catalog, database, table | Duration in milliseconds after table be in idle status |
| table_optimizing_status_pending_duration_mills | Gauge | catalog, database, table | Duration in milliseconds after table be in pending status |
| table_optimizing_status_planning_duration_mills | Gauge | catalog, database, table | Duration in milliseconds after table be in planning status |
| table_optimizing_status_executing_duration_mills | Gauge | catalog, database, table | Duration in milliseconds after table be in executing status |
| table_optimizing_status_committing_duration_mills | Gauge | catalog, database, table | Duration in milliseconds after table be in committing status |
| table_optimizing_process_total_count | Counter | catalog, database, table | Count of all optimizing process since ams started |
| table_optimizing_process_failed_count | Counter | catalog, database, table | Count of failed optimizing process since ams started |
| table_optimizing_minor_total_count | Counter | catalog, database, table | Count of minor optimizing process since ams started |
| table_optimizing_minor_failed_count | Counter | catalog, database, table | Count of failed minor optimizing process since ams started |
| table_optimizing_major_total_count | Counter | catalog, database, table | Count of major optimizing process since ams started |
| table_optimizing_major_failed_count | Counter | catalog, database, table | Count of failed major optimizing process since ams started |
| table_optimizing_full_total_count | Counter | catalog, database, table | Count of full optimizing rocess since ams started |
| table_optimizing_full_failed_count | Counter | catalog, database, table | Count of failed full optimizing process since ams started |
| table_optimizing_status_in_idle | Gauge | catalog, database, table | If currently table is in idle status |
| table_optimizing_status_in_pending | Gauge | catalog, database, table | If currently table is in pending status |
| table_optimizing_status_in_planning | Gauge | catalog, database, table | If currently table is in planning status |
| table_optimizing_status_in_executing | Gauge | catalog, database, table | If currently table is in executing status |
| table_optimizing_status_in_committing | Gauge | catalog, database, table | If currently table is in committing status |
Optimizer Group metrics
| Metric Name | Type | Tags | Description |
|---|---|---|---|
| optimizer_group_pending_tasks | Gauge | group | Number of pending tasks in optimizer group |
| optimizer_group_executing_tasks | Gauge | group | Number of executing tasks in optimizer group |
| optimizer_group_planing_tables | Gauge | group | Number of planing tables in optimizer group |
| optimizer_group_pending_tables | Gauge | group | Number of pending tables in optimizer group |
| optimizer_group_executing_tables | Gauge | group | Number of executing tables in optimizer group |
| optimizer_group_optimizer_instances | Gauge | group | Number of optimizer instances in optimizer group |
| optimizer_group_memory_bytes_allocated | Gauge | group | Memory bytes allocated in optimizer group |
| optimizer_group_threads | Gauge | group | Number of total threads in optimizer group |