Book Image

Fast Data Processing Systems with SMACK Stack

By : Raúl Estrada
Book Image

Fast Data Processing Systems with SMACK Stack

By: Raúl Estrada

Overview of this book

SMACK is an open source full stack for big data architecture. It is a combination of Spark, Mesos, Akka, Cassandra, and Kafka. This stack is the newest technique developers have begun to use to tackle critical real-time analytics for big data. This highly practical guide will teach you how to integrate these technologies to create a highly efficient data analysis system for fast data processing. We’ll start off with an introduction to SMACK and show you when to use it. First you’ll get to grips with functional thinking and problem solving using Scala. Next you’ll come to understand the Akka architecture. Then you’ll get to know how to improve the data structure architecture and optimize resources using Apache Spark. Moving forward, you’ll learn how to perform linear scalability in databases with Apache Cassandra. You’ll grasp the high throughput distributed messaging systems using Apache Kafka. We’ll show you how to build a cheap but effective cluster infrastructure with Apache Mesos. Finally, you will deep dive into the different aspect of SMACK using a few case studies. By the end of the book, you will be able to integrate all the components of the SMACK stack and use them together to achieve highly effective and fast data processing.
Table of Contents (15 chapters)
Fast Data Processing Systems with SMACK Stack
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface

Backup


The purpose of making Cassandra a NoSQL database is because when we create a single node, we make a copy of it. Copying the database to other nodes and the exact number of copies depend on the replication factor established when we create a new key space.

But as with any other standard SQL database, Cassandra offers to create a backup on the local computer. Cassandra creates a copy of the base using a snapshot. It is possible to make a snapshot of all the key spaces, or just one column family. It is also possible to make a snapshot of the entire cluster using the parallel SSH tool (pssh).

If the user decides to snapshot the entire cluster, it can be reinitiated and uses an incremental backup on each node.

Incremental backups provide a way to get each node configured separately, through setting the incremental_backups flag to true in cassandra.yaml.

When incremental backups are enabled, Cassandra hard-links each flushed SSTable to a backups directory under the key space data directory...