[RATIS-315] Add an option to delete the group directory in groupRemove

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Component/s: server
• Labels: acadia ozone
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 12/Sep/18 21:05
• Updated: 17/Sep/18 20:06
• Resolved: 17/Sep/18 17:43

Description

groupRemove currently only remove the group from the map but does not delete the group storage directory. We should add an option to clean up the directory.

Also, when a server restarts, it should check if there are existing group directories. If there are any, add them to the map.