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…

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…

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…

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…

从这周开始逐渐的进入学习状态,每天晚上都会坚持写c程序,并且伴随对这本书的深入,希望能写出更高质量的读书笔记和程序. 本书的第一章,介绍了一些关于unix的基础知识,在这里我不想去讨论linux到底是不是unix或者和unix的关系是什么这样的问题,只针对对自己有价值的知识点进行分析. 第一节 登录 第一节中,作者叙述了unix下用户登录的基本过程,包括保存用户口令的文件 /etc/passwd , 以及该文件的格式,该口令文件中的登录项的组成结构为由7个冒号分隔的字符串,依次是 : 登录名 加…

到家放松放松之后就开始学习算法了,手里拿的是拿的是一本Robert Sedgewick的橙皮书<算法(第四版)>的.这本书与导论那本书的不同之处在于轻数学思想.重实现,也就是说这是一本很不错的基础编程书.拿来做书中的练习还是蛮不错的,封面说有50种算法哦.思维导图如下,就且学且更新吧. 1.基本编程模型 第一章开始讲述用程序实现算法的优点:程序是对算法精确.优雅和完全的描述:可以通过运行程序来学习算法的各种性质:可以在应用程序中直接使用这些算法.还有这种学习算法的缺点缺点:分离思想和实现细节的…