apache hadoop the definitive guide

... Won the minute sort by sorting 500 GB in 59 seconds (on 1,400 nodes) and the 100-terabyte sort in 173 minutes (on 3,400 nodes). —Owen O’Malley Apache Hadoop and the Hadoop Ecosystem Although Hadoop ... }' 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...

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... see if the value of the variable a is equal to the number 4. If it is, the s the boolean value true. If a is not equal to 4, the result of the else if equals . If so, it adds to ; otherwise, ... in the myform property of an object named . a method, and the property name becomes the method name. To invoke a method of an object, use the . syntax to extract the function value from the ... compute the sine of the numeric value x: In addition to these basic arithmetic operations, JavaScript supports more complex mathematical operations through a large number of mathe part of the language....

Ngày tải lên: 21/08/2012, 09:57

... browser. At the time of this writing, the Mozilla browser is not yet at the 1.0 release level, but the browser is mature enough that Netscape has based its 6.0 and 6.1 browsers upon the Mozilla ... API to which they can code. Netscape reviewed the new material on JavaScript 1.5 in this fourth edition. The new material on the W3C DOM was reviewed by Philippe Le Hegaret of the W3C; by Peter- Paul ... from the book's web site. Follow the Examples link from the book's catalog page: http://www.oreilly.com/catalog/jscript4/ Acknowledgments Brendan Eich of the Mozilla organization is the...

Ngày tải lên: 05/10/2013, 13:20

... primes. In the context of the Web and web browsers, however, these aren't particularly interesting applications of the language. As mentioned earlier, the real power of JavaScript lies in the browser ... use the Document object to generate documents entirely from scratch. Furthermore, properties of the Document object allow you to specify colors for the document background, the text, and for the ... by the client, the server executes the script or scripts contained in the document and sends the resulting document (which may be partially static and partially dynamically generated) to the...

Ngày tải lên: 04/11/2013, 11:15

... work. This book, therefore, is the definitive guide to HTML. We give details for all the elements of the HTML 4.0 standard, plus the variety of interesting and useful extensions to the language—some ... in the image, the graphical browser sends the relative x,y coordinates of the mouse posi- tion to the server that is also designated in the anchor. A special server program then translates the ... tags and their attributes. Still others embed HTML tags as they compose. We think the stepwise approach—compose, then mark up—is the better way. We find that once we’ve defined and written the document’s...

Ngày tải lên: 16/01/2014, 16:33

... semantically, the program that produces the online version can determine which occurrences of the word "book" in the text are actually references to the Book element. The the entity ... can reference other documents from within your document. If these entities contain document text (SGML or XML), then references to them cause the parser to insert the text of the external file ... within a document) the structure and semantic content of a document. It does not mark up the way in which the document will appear to the reader, in print or otherwise. In the days before word...

Ngày tải lên: 21/01/2014, 06:20

... ]> These declarations form what is known as the internal subset. The declarations stored in the file referenced by the public or system identifier in the DOCTYPE declaration is called the ... example), there are a few other options available (technically in front of or in place of the text description), but they're rarely used. [4] language Indicates the language in which the ... prologue. The following sections describe the features of the prologue. 2.1.1. An SGML Declaration SGML documents begin with an optional SGML Declaration. The declaration can precede the document...

Ngày tải lên: 21/01/2014, 06:20

... out of context start tag. In fact, they're really the same error. The problem is never caused by the missing end tag per se, rather it's caused by the fact that something following ... in the test chapter. It is unremarkable in every regard. This is a paragraph in the test chapter. It is The telltale sign that SP could not find the DTD, or some module of the DTD, is the ... The xp distribution includes several sample programs. One of these programs, Time, performs a validating parse of the document and prints the amount of time required to parse the DTD and the...

Ngày tải lên: 21/01/2014, 06:20

... that there's no option required before the declaration; it simply occurs before the first filename. Jade concatenates all of the files that you give it together, and parses them as if they ... that points to the SGML declaration that should be used when parsing the document. There's no easy way to have both the stylesheet and the document in the same directory if they must be ... document. 4.5.2. Use the Catalogs The other way to fix this is with a little catalog trickery. First, note that Jade always looks in the file called catalog in the same directory as the document that...

Ngày tải lên: 21/01/2014, 06:20

... that may be useful is the alternate version of this book that shows all of the element content models in terms of the parameter entities which define them, rather than the "flattened" ... Layer Figuring out what to change may be the hardest part of the process. The organization of the parameter entities is quite logical, and, bearing in mind the organization described in Section ... want to add the name of the new element to the appropriate class. %*.mix; Mixtures are collections of classes that appear in content models. For example, the content model of the Example ...

Ngày tải lên: 21/01/2014, 06:20

... 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 then click a special send button that makes the ... at the beginning. Name anchors let you begin the display at the section of interest further down. Simply include them anywhere that they make sense as a hyperlink target. They do not change the ... consists of the document's name preceded by the hierarchy of directory names in which the file is stored (pathname), the Internet domain name of the server that hosts the file, and the software...

Ngày tải lên: 25/01/2014, 05:20

... define the payload of the stanza. The payload might be presented to a user or processed in some automated fashion as determined by the specification that defines the namespace of the payload. The ... members of the developer community decided to seek a wider review of the core protocols by formal- izing them within the IETF, which has standardized most of the core technologies for the Internet ... need. Use these appendixes as reference material on an ongoing basis, or as a quick index to the myriad of XMPP resources available on the Internet. xiv | Preface XMPP: The Definitive Guide CHAPTER...

Ngày tải lên: 16/02/2014, 15:20

... of their technology, including telecom. In his book Crossing the Chasm (HarperBusiness), Geoffrey Moore opines, The idea that the value of the system will be discovered rather than known at the ... 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 ... 540 Table of Contents | xv 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: 17/02/2014, 01:20

... when the user presses the Tab key. The effect of the tabindex values in the listing is that, as the Tab key is pressed, the focus shifts from the first input element to the third and then to the ... case, the word apples). Together, the tags and the content form the code element, as shown in Figure 3-1. Figure 3-1. The anatomy of an HTML element Elements are the way you tell the browser ... relationships with the other elements in an HTML document. An element that contains another element is the parent of the second element. In Listing 3-13, the body element is the parent to the code element,...

Ngày tải lên: 17/02/2014, 23:20

... Generally, though, the larger publishers and the technology providers that can hand on the royalty payments to their customers are able to support MP4 H.264/AAC. The others can offer only Ogg Theora or ... the value of the @type attribute, the browser will guess whether it may be able to play the media resource. It can make three decisions: ã It does not support the resource type. ã Maybe: there ... @poster In the screenshots in Figure 2–3 you can see the first frame of the video being displayed as the representative image for the video. The choice of frame to display is actually up to the browser....

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