Distributed System - BigTable

Bigtable is a distributed storage system for managing structured data that is designed to scale to a very large size .

System Components

The system consists of 3 major components :

1. Master Server
2. Tablet Servers
3. Clients

System Objectives

Master Server

• Balance data between connected tablet servers .
• Construct metadata and send it to the clients.
• Re-balance data .
• Manage logs of the whole system .

Tablet Servers

• Each tablet server manages number of tablets .
• Provide API for clients .
• Handle read requests without locking .
• Handle update/delete requests (mutex-lock) .
• Contain lazy deleted , updated , created vectors .
• Send their logs to master immediately .

Clients

• Send requests to tablet servers .
• Choose right tablet server according to available metadata .

System Support

any number of tablet servers can be added and each tablet server can manage any number of tablets .

System Architecture

Run

# install dependencies
$ npm i

# run master server
$ npm run master

# run tablet servers
$ npm run tabletserver1
$ npm run tabletserver2

# run clients
$ npm run client1
$ npm run client2