Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Apache provides source as well as binary tarballs and Debian packages."

A block of code is set as follows:

$ sudomkdir -p /var/log/Cassandra
$ sudochown -R `whoami` /var/log/Cassandra
$ sudomkdir -p /var/lib/Cassandra
$ sudochown -R `whoami` /var/lib/cassandra

Any command-line input or output is written as follows:

$ java –version
java version "1.7.0_45"

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "OrderPreservingPartitioner is similar to above with same challenges and additional limitation that it assumes that keys are UTF8 strings".

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.