GS_WLM_OPERATOR_STATISTICS

GS_WLM_OPERATOR_STATISTICS displays the operators of the jobs that are being executed by the current user. Only users with the sysadmin permission can query this view.

Table 1 GS_WLM_OPERATOR_STATISTICS columns

Name	Type	Description
queryid	bigint	Internal query ID used for statement execution
pid	bigint	Thread ID of the backend
plan_node_id	integer	Plan node ID of the execution plan
plan_node_name	text	Name of the operator corresponding to the plan node ID
start_time	timestamp with time zone	Time when the operator starts to process the first data record
duration	bigint	Total execution time of the operator, in ms
status	text	Execution status of the current operator, which can be finished or running
query_dop	integer	DOP of the operator
estimated_rows	bigint	Number of rows estimated by the optimizer
tuple_processed	bigint	Number of elements returned by the operator
min_peak_memory	integer	Minimum peak memory used by the operator on database instances (unit: MB)
max_peak_memory	integer	Maximum peak memory used by the operator on database instances (unit: MB)
average_peak_memory	integer	Average peak memory used by the operator on database instances (unit: MB)
memory_skew_percent	integer	Memory usage skew of the operator among database instances
min_spill_size	integer	Minimum spilled data among database instances when a spill occurs (unit: MB). The default value is 0.
max_spill_size	integer	Maximum spilled data among database instances when a spill occurs (unit: MB). The default value is 0.
average_spill_size	integer	Average spilled data among database instances when a spill occurs (unit: MB). The default value is 0.
spill_skew_percent	integer	Database instance spill skew when a spill occurs
min_cpu_time	bigint	Minimum execution time of the operator on database instances (unit: ms)
max_cpu_time	bigint	Maximum execution time of the operator on database instances (unit: ms)
total_cpu_time	bigint	Total execution time of the operator on database instances (unit: ms)
cpu_skew_percent	integer	Execution time skew among database instances
warning	text	Warning. The following warnings are displayed: - Sort/SetOp/HashAgg/HashJoin spill - Spill file size large than 256MB - Broadcast size large than 100MB - Early spill - Spill times is greater than 3 - Spill on memory adaptive - Hash table conflict