Home Java • Download Hadoop in Action by Chuck Lam PDF

Download Hadoop in Action by Chuck Lam PDF

By Chuck Lam

Hadoop in motion teaches readers easy methods to use Hadoop and write MapReduce courses. The meant readers are programmers, architects, and venture managers who've to technique quite a lot of facts offline. Hadoop in motion will lead the reader from acquiring a duplicate of Hadoop to environment it up in a cluster and writing information analytic courses. The e-book starts by way of making the fundamental thought of Hadoop and MapReduce more uncomplicated to understand by way of employing the default Hadoop set up to a couple easy-to-follow projects, corresponding to reading adjustments in notice frequency throughout a physique of records. The booklet keeps during the uncomplicated strategies of MapReduce functions constructed utilizing Hadoop, together with a detailed examine framework elements, use of Hadoop for numerous info research initiatives, and diverse examples of Hadoop in motion. Hadoop in motion will clarify the right way to use Hadoop and current layout styles and practices of programming MapReduce. MapReduce is a posh proposal either conceptually and in its implementation, and Hadoop clients are challenged to benefit the entire knobs and levers for operating Hadoop. This ebook takes you past the mechanics of operating Hadoop, educating you to jot down significant courses in a MapReduce framework. This ebook assumes the reader can have a simple familiarity with Java, as such a lot code examples can be written in Java. Familiarity with easy statistical suggestions (e.g. histogram, correlation) may help the reader delight in the extra complicated info processing examples.

Show description

Read or Download Hadoop in Action PDF

Best java books

Java For Dummies

Commence construction robust courses with Java 6—fast!

Get an summary of Java 6 and start development your individual programs
Even if you're new to Java programming—or to programming in general—you can wake up and working in this wildly well known language in a rush. This ebook makes it effortless! From how one can set up and run Java to figuring out sessions and gadgets and juggling values with arrays and collections, you'll get on top of things at the new good points of Java 6 in no time.

Discover how to
* Use object-oriented programming
* paintings with the adjustments in Java 6 and JDK 6
* store time through reusing code
* combine Java and Javascript with the recent scripting tools
* Troubleshoot code difficulties and connect insects

Java in a Nutshell (6th Edition)

The newest version of Java in a Nutshell is designed to assist skilled Java programmers get the main out of Java 7 and eight, yet it’s additionally a studying direction for brand new builders. Chock choked with examples that show the way to take entire benefit of smooth Java APIs and improvement top practices, the 1st part of this completely up-to-date booklet offers a fast moving, no-fluff advent to the Java programming language and the center runtime facets of the Java platform.

Practical JIRA Administration

If youre conversant in JIRA for factor monitoring, trojan horse monitoring, and different makes use of, you recognize it could occasionally be difficult to establish and deal with. during this concise booklet, software program toolsmith Matt Doar solutions tough and frequently-asked questions about JIRA management, and indicates you the way JIRA is meant for use.

Liferay 6.x Portal Enterprise Intranets Cookbook

Over 60 hands-on recipes that can assist you successfully create complicated and hugely customized firm intranet suggestions with Liferay Portal 6. x CE approximately This BookLearn tips to use Liferay Portal to create an absolutely useful intranet company with a transparent constitution and database of all departments and staff of your companySave it slow and funds via taking regulate of your information, records, and enterprise processesPacked with step by step, real-world examples that will help you with the deploy, deployment, and configuration of Liferay and that will help you run strong instruments in your staff or clientsWho This e-book Is ForIf you're a Java developer or administrator with a technical historical past and need to put in and configure Liferay Portal as an firm intranet, this is often the publication for you.

Extra info for Hadoop in Action

Sample text

Shuffle the partitions to the appropriate machines in phase two. This is a lot of work for something as simple as word counting, and we haven’t even touched upon issues like fault tolerance. ) This is the reason why you would want a framework like Hadoop. When you 12 CHAPTER 1 Introducing Hadoop write your application in the MapReduce model, Hadoop will take care of all that scalability “plumbing” for you. 2 Scaling the same program in MapReduce MapReduce programs are executed in two main phases, called mapping and reducing.

The input format for processing one large file, such as a log file, is list(). Understanding MapReduce 2 3 13 The list of (key/value) pairs is broken up and each individual (key/value) pair, , is processed by calling the map function of the mapper. In practice, the key k1 is often ignored by the mapper. The mapper transforms each pair into a list of pairs. The details of this transformation largely determine what the MapReduce program does.

Pipelines can help the reuse of processing primitives; simple chaining of existing modules creates new ones. Message queues can help the synchronization of processing primitives. The programmer writes her data processing task as processing primitives in the form of either a producer or a consumer. The timing of their execution is managed by the system. Similarly, MapReduce is also a data processing model. Its greatest advantage is the easy scaling of data processing over multiple computing nodes.

Download PDF sample

Rated 4.74 of 5 – based on 10 votes
In Java