hadoop the definitive guide 2nd edition pdf

... Edition. October 2010: Second Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. Hadoop: The Definitive Guide, the ... data together and having the tools to analyze it, the Rackspace engineers were able to gain an understanding of the data that they otherwise would never have had, and, furthermore, they were ... the output types for the map and the reduce functions, which are often the same, as they are in our case. If they are different, then the map output types can be set using the methods setMapOutputKeyClass()...

Ngày tải lên: 28/04/2014, 16:04

... of the highest found so far. The third piece of code runs the MapReduce job (see Example 2-5). Analyzing the Data with Hadoop | 23 www.it-ebooks.info Hadoop: The Definitive Guide, Third Edition by ... methods control the output types for the map and the reduce functions, which are often the same, as they are in our case. If they are different, then the map output types can be set using the methods setMapOutputKeyClass() ... chapters, but the important point for the present discussion is that there are two parts to the computation, the map and the reduce, and it’s the interface between the two where the “mixing” occurs....

Ngày tải lên: 03/05/2014, 20:55

... Scripts 79 Apache: The Definitive Guide, Second Edition, eMatter Edition Copyright â 1999 Ben Laurie and Peter Laurie. All rights reserved. The tag <FORM> introduces the form; at the bottom, </FORM> ... access to the Internet. — The proxy might cache popular pages to save reaccessing them. 84 Chapter 4: Common Gateway Interface (CGI) Apache: The Definitive Guide, Second Edition, eMatter Edition Copyright ... bypass the rules of Class A, B, and C networks using subnet masks. These allow us to further subdivide the network by using more of the bits for the network number and less for the host number. Their...

Ngày tải lên: 25/03/2014, 10:52

... }' done The script loops through the compressed year files, first printing the year, and then processing each file using awk. The awk script extracts two fields from the data: the air temperature ... a missing value in the NCDC dataset) and whether the quality code indicates that the reading is not suspect or erroneous. If the reading is OK, the value is compared with the maximum value seen ... http://www.hadoopbook.com/. You will also find instructions there for obtaining the datasets that are used in examples throughout the book, as well as further notes for running the programs in the book,...

Ngày tải lên: 12/02/2014, 12:20

... classes: These model the entities, or data, in the system. ã Boundary classes: These essentially provide the interface between the system and the outside world, usually the user interface. The interface ... combining his username with the company domain name. The method name, the return type, and the list of parameters and their types are together known as the signature of the method. Creating an ... for further reading. Downloading the Code The full code for the examples found in Part II of the book is available for download from the book’s page on the Apress website (www.apress.com). There...

Ngày tải lên: 18/03/2014, 23:20

... talk to each other over networks. The two protocols that give the suite its name are among the most important, but there are many others, and we shall meet some of them later. These protocols ... Whatever the name of the module, the LoadModule directive requires the exact filename. 2.6.2.1 LoadFile The LoadFile directive links in the named object files or libraries when the server ... required by the protocol, by convention there is a dividing line somewhere inside this number: to the left is the network number and to the right, the host number. Two machines on the same physical...

Ngày tải lên: 25/03/2014, 10:39

... reset the form or send its contents to the server. Users fill out the form at their leisure, perhaps after reading the rest of the document, and click a special send button that makes the browser send ... Header The document header describes the various properties of the document, including its title, position within the Web, and relationship with other documents. Most of the data contained within the ... to the user. 3.7.1 The <head> Tag The <head> tag serves to encapsulate other header tags. Place it at the beginning of your document, just after the <html> tag and before the...

Ngày tải lên: 25/03/2014, 10:43

... 111 1950 22 The output is the same as the Java program, so the next step is to run it using Hadoop itself. The hadoop command doesn’t support a Streaming option; instead, you specify the Streaming ... look at the details of this model in later chapters, but the important point for the present discussion is that there are two parts to the computation, the map and the reduce, and it’s the interface ... data together and having the tools to analyze it, the Rackspace engineers were able to gain an understanding of the data that they otherwise would never have had, and, furthermore, they were...

Ngày tải lên: 29/03/2014, 09:20

... Documentation lowers the barrier to entry and helps people contemplate the possibilities. Produced with the generous support of O’Reilly Media, Asterisk: The Definitive Guide is the third edition of what ... Asterisk: The Definitive Guide, the images of starfish, and related trade dress are trademarks of O’Reilly Media, Inc. Many of the designations used by manufacturers and sellers to distinguish their ... 663 Table of Contents | xvii CHAPTER 1 A Telephony Revolution First they ignore you, then they laugh at you, then they fight you, then you win. —Mahatma Gandhi When we first set out—nearly five years...

Ngày tải lên: 31/03/2014, 01:20

... into the overall struc- ture of the document. Every element in the document is either the parent or the child of another element, and it’s often both. An element is said to be the parent of another ... parent to another em element. Conversely, an element is the child of another element if it is directly beneath the other element. Thus, the anchor element in Figure 2-14 is a child of the strong ... {font-weight: bold;} Note the presence of the tilde (~) in the selector. It is the key to selection based on the presence of a space-separated word within the attribute’s value. If you omit the tilde, you...

Ngày tải lên: 31/03/2014, 16:49

... are those of the authors, not the Internet Service Provider. HTML & XHTML: The Definitive Guide p age 53 4.4.2 The <acronym> Tag The <acronym> tag indicates that the enclosed ... them as footnotes or as a separate document entirely. The semantics of the <cite> tag go far beyond changing the appearance of the enclosed text; they enable the browser to present the ... but the practice is tricky; you cannot always predict how other browsers will react to nested comments. HTML & XHTML: The Definitive Guide p age 5 5 The special HTML reference for the...

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Ngày tải lên: 14/12/2013, 21:15

Ngày tải lên: 14/12/2013, 21:15

Ngày tải lên: 14/12/2013, 21:15