File based group provider#

Trino can map user names onto groups for easier access control and resource group management. Group file resolves group membership using a file on the coordinator.

Group file configuration#

Enable group file by creating an etc/ file on the coordinator:

The following configuration properties are available:



Path of the group file.


How often to reload the group file. Defaults to 5s.

Group files#

File format#

The group file contains a list of groups and members, one per line, separated by a colon. Users are separated by a comma.