This chapter covers ■ The origins of Hadoop, HBase, and NoSQL ■ Common use cases for HBase ■ A basic HBase installation ■ Storing and querying data with HBase 本章要点 Hadoop,HBase和NoSQL的起源 HBase的常见应用案例 HBase的基本安装 基于HBase保存与查询数据 http://www.uifanr.com/ HB…

As we now know, many prominent internet companies, most notably Google, Amazon, Yahoo!, and Facebook, were on the forefront of this explosion of data. Some generated their own data, and others collected what was freely available; but managing these v…

Data often trickles in and is added to an existing data store for further usage, such as analytics, processing, and serving. Many HBase use cases fall in this category-using HBase as the data store that captures incremental data coming in from variou…

Search is the act of locating information you care about: for example, searching for pages in a textbook that contain the topic you want to read about, or for web pages that have the information you're looking for. Searching for documents containing…

Sometimes the best way to understand a software product is to look at how it's used. The kinds of problems it solves and how those solutions fit into a larger application architecture can tell you a lot about a product. Because HBase has seen a numbe…

Pretend that you're working on an open source project for searching the web by crawling websites and indexing them. You have an implementation that works on a small cluster of machines but requires a lot of manual steps. Pretend too that you're worki…

Let's take a closer look at the term Big Data. To be honest, it's become something of a loaded term, especially now that enterprise marketing engines have gotten hold of it. We'll keep this discussion as grounded as possible. 让我们仔细思考下"大数据"这个词.老实…

Relational database systems have been around for a few decades and have been hugely successful in solving data storage, serving, and processing problems over the years. Several large companies have built their systems using relational database system…

第一章  C++简介 1.1  C++特点 C++融合了3种不同的编程方式:C语言代表的过程性语言,C++在C语言基础上添加的类代表的面向对象语言,C++模板支持的泛型编程. 1.2  C语言及其编程原理 20世纪70年代贝尔实验室的Dennis Ritchie开发了C语言(为了开发UNIX操作系统). C语言是过程性语言,采用结构化编程方法(代码块.分支结构,如for.while等代码块). C语言流行自顶向下的程序设计. 1.3  C++语言 1.3.1  C++起源 C++也是在贝尔实验室…

第一章. 简介 官方介绍: Python是一种简单易学,功能强大的编程语言,它有高效率的高层数据结构,简单而有效地实现面向对象编程.Python简洁的语法和对动态输入的支持,再加上解释性语言的本质,使得它在大多数平台上的许多领域都是一个理想的脚本语言,特别适用于快速的应用程序开发. 安装: Python:http://www.python.org/download/ PyScripter:http://code.google.com/p/pyscripter/ UltraEdit的Python语…