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  • Book Overview & Buying Mastering Apache Cassandra - Second Edition
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Mastering Apache Cassandra - Second Edition

Mastering Apache Cassandra - Second Edition

By : Nishant Neeraj
4.6 (10)
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Mastering Apache Cassandra - Second Edition

Mastering Apache Cassandra - Second Edition

4.6 (10)
By: Nishant Neeraj

Overview of this book

The book is aimed at intermediate developers with an understanding of core database concepts who want to become a master at implementing Cassandra for their application.
Table of Contents (10 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Quick Start
1. Quick Start
Introduction to Cassandra
A brief introduction to a data model
Installing Cassandra locally
Cassandra in action
Summary
2
2. Cassandra Architecture
2. Cassandra Architecture
Problems in the RDBMS world
Enter NoSQL
Cassandra
Understanding the architecture of Cassandra
Summary
3
3. Effective CQL
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3. Effective CQL
The Cassandra data model
CQL shell commands
Summary
4
4. Deploying a Cluster
4. Deploying a Cluster
Evaluating requirements
System configurations
The required software
Installing Cassandra
Configuring a Cassandra cluster
Authorization and authentication
Summary
5
5. Performance Tuning
5. Performance Tuning
Stress testing
Performance tuning
Summary
6
6. Managing a Cluster – Scaling, Node Repair, and Backup
6. Managing a Cluster – Scaling, Node Repair, and Backup
Scaling
Replacing a node
Backup and restoration
Load balancing
DataStax OpsCenter – managing large clusters
Summary
7
7. Monitoring
7. Monitoring
Cassandra's JMX interface
Cassandra's nodetool utility
DataStax OpsCenter
Nagios – monitoring and notification
Cassandra log
Troubleshooting
Summary
8
8. Integration with Hadoop
8. Integration with Hadoop
Using Hadoop
Hadoop and Cassandra
Cassandra with Hadoop MapReduce
Cassandra and Hadoop in action
Hadoop in a Cassandra cluster
Integration with Pig
Summary
9
Index
Index

CQL shell commands

CQL shell or cqlsh comes with many little utilities. In this section, we will see them.

DESCRIBE

The DESCRIBE command is used to get details of container objects. You can use DESC in place of DESCRIBE. So, one can describe a keyspace, table, or cluster. There are five variants of this command:

# Describe the whole cluster
DESCRIBE CLUSTER
# Display the CQL command to regenerate all the keyspaces in the cluster
DESCRIBE SCHEMA
# List all the keyspaces names
DESCRIBE KEYSPACES
# List the CQL statement that can be used to recreate the keyspace
DESCRIBE KEYSPACE <keyspace_name>
# Show tables names in the current keyspace
# Show all the tables across all the keyspaces if not using any keyspace
DESCRIBE TABLES
# Print CQL to create a table
DESCRIBE TABLE <table_name>

TRACING

The TRACING command is a convenient tool to view the steps that your queries go through and possibly use it to optimize the query. It displays how much time is spent on what step at which node.

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