Information about roles.
Returns 200 OK when information about roles was queried successfully. Returns 307 TEMPORARY_REDIRECT redirect to the leading master when current master is not the leader. Returns 503 SERVICE_UNAVAILABLE if the leading master cannot be found. This endpoint provides information about roles as a JSON object. It returns information about every role that is on the role whitelist (if enabled), has one or more registered frameworks, or has a non-default weight or quota. For each role, it returns the weight, total allocated resources, and registered frameworks.
This endpoint requires authentication iff HTTP authentication is enabled.