| db_extractor_start_time | Gauge | The timestamp (seconds) of when the extractor last started. |
| db_extractor_finish_time | Gauge | The timestamp (seconds) of when the extractor last finished. |
| db_extractor_memory_bytes | Gauge | The memory usage of extractor in bytes. |
| db_extractor_cpu_percent | | Total The CPU usage of the extractor (0 — 100). Notice that this value is summed across all threads, so the value might exceed 100. |
| db_extractor_num_threads | Gauge | The number of threads used by the extractor. |
| db_extractor_rows_fetched | Counter | The number of rows fetched from a database, labeled on each query. |
| db_extractor_rows_uploaded | Counter | The total number of rows successfully uploaded to CDF. |
| db_extractor_queries_run | Counter | The number of successful queries. |
| db_extractor_queries_failed | Counter | The number of failed queries. |
| db_extractor_connection_num | Counter | The number of concurrent database connections active. This is the number of active queries. |
| db_extractor_server_num | Counter | The number of databases specified in the configuration. |
| db_extractor_running | Counter | The state of the extractor as a numeric value. 1 indicates running and 0 indicates not running. |
| db_extractor_info | | An information dictionary about the given extractor. This is the extractor’s name and version. |
