Technical Articles

Previous: http://www.aliyun.com/zixun/aggregation/13383.html "> Spark Tutorial - Building a Spark Cluster - Configuring Hadoop Standalone Mode and Running Wordcount (1) 2. Installing rsync Our version of Ubuntu 12.10 Rsync installed by default, we can install or update rsy through the following command ...

Hadoop is widely used in the industry due to its extensive practicality and good usability in the field of big data processing. Since it was introduced in 2007, Hadoop has gained widespread attention and research from academia. In just a few years, Hadoop quickly became the most successful and widely accepted big data processing mainstream technology and system platform by far and has become a de facto industry standard for big data processing, gaining industry in large numbers Further development and improvement, and in the industry and application industries, especially the Internet industry has been widely used. Due to the system performance ...

The same essential tool in general software development is the code editor. Traditional code editors are generally installed in the form of software installation package to the computer, the code is compiled and saved to the server through ftp or svn and other tools (of course, such as NET development in Microsoft Visual Studio such a powerful integration Tools say another.). In the actual project development in such a way is also very convenient. However, with the rise of various cloud services, ...

& Http://www.aliyun.com/zixun/aggregation/37954.html "> nbsp; pseudo-distribution model involves the following configuration information: Modify the Hadoop core configuration file core-site.xml, mainly to configure the address of the HDFS and Port number; Hadoop HDFS configuration file hdfs-site.xml, the main configuration replication; modify Ha ...

& http: //www.aliyun.com/zixun/aggregation/37954.html "> A computer system can not have no operating system, the developers of large companies have also developed an uncomplicated and easy-to-use operating system.Linux is considered Is a complex system, it is still the most commonly used system, of course, not only developers and geeks will use, it may be in your daily life or I, and like it because of its magical stability and Applied...

First, calculate the PI value of the way and principle & nbsp; Baidu, the method of calculating the PI really a lot. But in the Hadoop examples of code comments Write: Is the use of Quasi-Monte Carlo algorithm to estimate the value of PI ...

While actively launching commercial version of Hadoop while actively investing in Cloudera, a big data analytics management software developer based on Hadoop, when Intel recently announced that it would unite the "two lines" to launch a more "Fusion Edition" Hadoop At the time, the king of chips in the big data market, sophisticated layout and ambition also emerge in the forefront - it is to create the most suitable Hadoop server chip system, it is to become the king of the era of big data. In the booming big data market, the opportunities for infrastructure vendors, no doubt from it ...

& http: //www.aliyun.com/zixun/aggregation/37954.html "> nbsp; Today we have to share some anti-compiler tools on Java, decompilation sounds like a very high and big technical vocabulary, popular Said that decompilation is a reverse analysis of the target executable program, resulting in the original code process. Especially like. NET, Java such as running in the virtual machine programming language, more ...

Using Hadoop to drive large-scale data analysis does not necessarily mean that building a good, old array of distributed storage can be a better choice. Hadoop's original architecture was designed to use a relatively inexpensive commodity server and its local storage in a scale-out manner. Hadoop's original goal was to cost-effectively develop and utilize data, which in the past did not work. We've all heard of words like large-scale data, large-scale data types, large-scale data speeds, etc. that describe these previously unmanageable data sets. Given the definition so ...

In this very complicated information age of the Internet, we have learned how to use the powerful tool of search engine to find the target information. For example, you can search for Valentine's Day on Google to find a girlfriend, and you will also look for a regular Cosmetic medical institutions (although a large part of advertising liar). So if your own website system needs to enable users to search for some important information, and can be structured to show to the user, the following nine Java search engine framework to share may be able to help you. 1, Java full-text search lead ...

1.MapReduce's main function MapReduce through the abstract model and computational framework what needs to do (What need to do) and how to do (How to do) separate for the programmers to provide an abstract and high-level programming interface and framework, Programmers only need to care about the specific calculation of its application layer, just write a small amount of processing applications to calculate the problem of the program code; how to complete the parallel computing tasks related to many system layer details are hidden ...

Preface & http: //www.aliyun.com/zixun/aggregation/37954.html "> As the project, you need to count the computer resources used by each business group, such as cpu, memory, io read and write, network traffic. Need to read the source code to see Hadoop's default counter. MapReduce Counter can be ...

In the past, assembly code written by developers was lightweight and fast. If you are lucky, they can hire someone to help you finish typing the code if you have a good budget. If you're in a bad mood, you can only do complex input work on your own. Now, developers work with team members on different continents, who use languages ​​in different character sets, and worse, some team members may use different versions of the compiler. Some code is new, some libraries are created from many years ago, the source code has been ...

1. To differentiate our wishes from ourselves or others We are always trying to make others happy. Try to reject this wish, or at least not at the price of your own happiness. Remember, dreams are ours, not others. 2. Remember your dreams, and record from time to time to prepare two notebooks, one on the bed, a carry-on, once there is any idea to write it down, and then to achieve. 3.http: //www.aliyun.com/zixun/aggregation / ...

& http: //www.aliyun.com/zixun/aggregation/37954.html "> nbsp; We selected 12 key indicators from 10 key sources (including IEEE Xplore, Google and GitHub) and selected 2014 If you have any disagreement, or if you want to know more, please visit our online interactive version. You can adjust each one as you like ...

& http: //www.aliyun.com/zixun/aggregation/37954.html "> The ApacheSqoop (SQL-to-Hadoop) project is designed to facilitate efficient big data exchange between RDBMS and Hadoop. Users can access Sqoop's With help, it is easy to import data from relational databases into Hadoop and its related systems (such as HBase and Hive); at the same time ...

If you are a PHP programmer, then you may be very concerned about whether there is a free PHP IDE right? Xiaobian in this article for everyone finishing some free, and easy to use PHP IDE, please laugh satisfied! Notepad ++ Notepad ++ is a Windows Environment free and open source code editor, supported languages: C, C ++, Java, C #, XML, HTML, PHP, Javascript, etc! Notepad ++ not only syntax highlighting, but also ...

& http: //www.aliyun.com/zixun/aggregation/37954.html "> Zookeeper is an Apache open source project, very common in the cluster management.Its cluster build is also very simple, only need a simple configuration, The cluster nodes will complete their own communication, automatic selection Leader etc. For more information on zookeeper and the principle of ...

Whether you're a newcomer or an experienced senior http://www.aliyun.com/zixun/aggregation/7363.html "> software designer, the following 10 lessons and 10 lessons or More or Less will be a little inspiration for you, take a look at it Top Ten Experiences: Object Oriented is More Difficult Than You Think The most important skill for programmers: Communicate You have to learn to say "no" If all matters Just as important, that means it ...

& nbsp; ZooKeeper is a very important component of Hadoop Ecosystem, its main function is to provide a distributed system coordination service (Coordination), and The corresponding Google service called Chubby. Today this article is divided into three sections to introduce ZooKeep ...