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  • Book Overview & Buying Learning Cascading
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Learning Cascading

Learning Cascading

By : Covert, Victoria Loewengart
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Learning Cascading

Learning Cascading

5 (3)
By: Covert, Victoria Loewengart

Overview of this book

This book is intended for software developers, system architects and analysts, big data project managers, and data scientists who wish to deploy big data solutions using the Cascading framework. You must have a basic understanding of the big data paradigm and should be familiar with Java development techniques.
Table of Contents (12 chapters)
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7
7. Optimizing the Performance of a Cascading Application
11
Index

Conventions

In this book, you will find a number of text styles 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: "A key script, such as hadoop-env.sh, is needed in instances where environment variables are set."

A block of code is set as follows:

public class NLPUtils
{
  /* Parse text into sentences
   * @param text - document text
   * @return String
   */
  public static String[] getSentences(String text)
  {
    String sentences[]=text.split("[.?!]");
    for (int i=0; i< sentences.length; i++)
    {
      sentences[i]=sentences[i].trim();
    }
    return sentences;
  }
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

Tap docTap = new FileTap (inputScheme, args[0]);
Tap sinkTap = new FileTap(outputScheme, args[1], SinkMode.REPLACE );
Pipe inPipe = new Pipe("InPipe");
Pipe pipeTextProcess = new SubAssemblyExample(inPipe);
Flow flow = new LocalFlowConnector();

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

hadoop jar myjob.jar com.ai.jobs.MainJob data/input data/output

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Right-click on the project and navigate to DebugAs | DebugConfigurations…."

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.

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Learning Cascading
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