DATA_COLLECTOR
显示所有 数据收集器组件的设置：组件当前的保留策略属性和其他数据收集统计信息。
默认情况下，数据收集器处于打开状态。要将其关闭，请将配置参数 EnableDataCollector 设置为 0。
示例
获取资源池的当前状态：
=> SELECT * FROM data_collector WHERE component = 'ResourcePoolStatus' ORDER BY node_name;
-[ RECORD 1 ]----------+---------------------------------
node_name | v_vmart_node0001
component | ResourcePoolStatus
table_name | dc_resource_pool_status
description | Resource Pool status information
access_restricted | t
memory_buffer_size_kb | 64
disk_size_kb | 25600
interval_set | f
interval_time | 0
record_too_big_errors | 0
lost_buffers | 0
lost_records | 0
retired_files | 385
retired_records | 3492335
current_memory_records | 0
current_disk_records | 30365
current_memory_bytes | 0
current_disk_bytes | 21936993
first_time | 2020-08-14 11:03:28.007894-04
last_time | 2020-08-14 11:59:41.005675-04
kb_per_day | 548726.098227313
-[ RECORD 2 ]----------+---------------------------------
node_name | v_vmart_node0002
component | ResourcePoolStatus
table_name | dc_resource_pool_status
description | Resource Pool status information
access_restricted | t
memory_buffer_size_kb | 64
disk_size_kb | 25600
interval_set | f
interval_time | 0
record_too_big_errors | 0
lost_buffers | 0
lost_records | 0
retired_files | 385
retired_records | 3492335
current_memory_records | 0
current_disk_records | 28346
current_memory_bytes | 0
current_disk_bytes | 20478345
first_time | 2020-08-14 11:07:12.006484-04
last_time | 2020-08-14 11:59:41.004825-04
kb_per_day | 548675.811828872
-[ RECORD 3 ]----------+---------------------------------
node_name | v_vmart_node0003
component | ResourcePoolStatus
table_name | dc_resource_pool_status
description | Resource Pool status information
access_restricted | t
memory_buffer_size_kb | 64
disk_size_kb | 25600
interval_set | f
interval_time | 0
record_too_big_errors | 0
lost_buffers | 0
lost_records | 0
retired_files | 385
retired_records | 3492335
current_memory_records | 0
current_disk_records | 28337
current_memory_bytes | 0
current_disk_bytes | 20471843
first_time | 2020-08-14 11:07:13.008246-04
last_time | 2020-08-14 11:59:41.006729-04
kb_per_day | 548675.63541403