GBase 8c 事务ID和快照（五）

pg_stat_get_wlm_realtime_ec_operator_info

描述：从内部哈希表中获取EC执行计划算子信息。

参数：nan

返回值类型：queryid bigint, plan_node_id integer, plan_node_name text, start_time timestamp with time zone, ec_operator integer, ec_status text, ec_execute_datanode text, ec_dsn text, ec_username text, ec_query text, ec_libodbc_type text, ec_fetch_count bigint

pg_stat_get_wlm_operator_info

描述：从内部哈希表中获取执行计划算子信息。

参数：nan

返回值类型：queryid bigint, pid bigint, plan_node_id integer, plan_node_name text, start_time timestamp with time zone, duration bigint, query_dop integer, estimated_rows bigint, tuple_processed bigint, min_peak_memory integer, max_peak_memory integer, average_peak_memory integer, memory_skew_percent integer, min_spill_size integer, max_spill_size integer, average_spill_size integer, spill_skew_percent integer, min_cpu_time bigint, max_cpu_time bigint, total_cpu_time bigint, cpu_skew_percent integer, warning text

pg_stat_get_wlm_node_resource_info

描述：获取当前节点资源信息。

参数：nan

返回值类型：min_mem_util integer, max_mem_util integer, min_cpu_util integer, max_cpu_util integer, min_io_util integer, max_io_util integer, used_mem_rate integer

pg_stat_get_session_wlmstat

描述：返回当前会话负载信息。

参数：pid integer

返回值类型：datid oid, threadid bigint, sessionid bigint, threadpid integer, usesysid oid, appname text, query text, priority bigint, block_time bigint, elapsed_time bigint, total_cpu_time bigint, skew_percent integer, statement_mem integer, active_points integer, dop_value integer, current_cgroup text, current_status text, enqueue_state text, attribute text, is_plana boolean, node_group text, srespool name

pg_stat_get_wlm_ec_operator_info

描述：从内部哈希表中获取EC执行计划算子信息。

参数：nan

返回值类型：queryid bigint, plan_node_id integer, plan_node_name text, start_time timestamp with time zone, duration bigint, tuple_processed bigint, min_peak_memory integer, max_peak_memory integer, average_peak_memory integer, ec_operator integer, ec_status text, ec_execute_datanode text, ec_dsn text, ec_username text, ec_query text, ec_libodbc_type text, ec_fetch_count bigint

pg_stat_get_wlm_instance_info

描述：返回当前实例负载信息。

参数：nan

返回值类型：instancename text, timestamp timestamp with time zone, used_cpu integer, free_memory integer, used_memory integer, io_await double precision, io_util double precision, disk_read double precision, disk_write double precision, process_read bigint, process_write bigint, logical_read bigint, logical_write bigint, read_counts bigint, write_counts bigint