CLEAR_DATA_COLLECTOR

Clears all memory and disk records from Data Collector tables and logs, and resets collection statistics in system table DATA_COLLECTOR.

This is a meta-function. You must call meta-functions in a top-level SELECT statement.

Behavior type

Volatile

Syntax

CLEAR_DATA_COLLECTOR( [ 'component' ] )

Parameters

component

Clears memory and disk records for the specified component. If you provide no argument, the function clears memory and disk records for all components.

Query system table DATA_COLLECTOR for component names. For example:

=> SELECT DISTINCT component, description FROM data_collector WHERE component ilike '%Depot%' ORDER BY component;
   component    |          description
----------------+-------------------------------
 DepotEvictions | Files evicted from the Depot
 DepotFetches   | Files fetched to the Depot
 DepotUploads   | Files Uploaded from the Depot
(3 rows)

Privileges

Superuser

Examples

The following command clears memory and disk records for the ResourceAcquisitions component:

=> SELECT clear_data_collector('ResourceAcquisitions');
 clear_data_collector
----------------------
 CLEAR
(1 row)

The following command clears data collection for all components:

=> SELECT clear_data_collector();
 clear_data_collector
----------------------
 CLEAR
(1 row)