[RATIS-122] Add a FileStore example

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.2.0
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 17/Oct/17 18:23
• Updated: 08/Nov/17 23:03
• Resolved: 08/Nov/17 23:03

Description

I propose to add a new FileStore example. Below are the ideas:

• It uses Ratis to store files so that the files are replicated in a Raft group.
• It is not a file system – it only supports basic operations such as read, write and delete but not ls, rename, etc.
• Its state machine stores the file data separated from the log in order to reduce the log size.
• It can be served as a Ratis performance test.