Search By File Size

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Hadoop Distributed File System: Architecture and Design

Original: http://hadoop.apache.org/core/docs/current/hdfs_design.html Introduction Hadoop Distributed File System (HDFS) is designed to be suitable for running in general hardware (commodity hardware) on the Distributed File system. It has a lot in common with existing Distributed file systems. At the same time, it is obvious that it differs from other distributed file systems. HDFs is a highly fault tolerant system suitable for deployment in cheap ...

Hadoop Distributed File system: Structure and Design

1. The introduction of the Hadoop Distributed File System (HDFS) is a distributed file system designed to be used on common hardware devices. It has many similarities to existing distributed file systems, but it is quite different from these file systems. HDFS is highly fault-tolerant and is designed to be deployed on inexpensive hardware. HDFS provides high throughput for application data and applies to large dataset applications. HDFs opens up some POSIX-required interfaces that allow streaming access to file system data. HDFS was originally for AP ...

A UI specification file

This is a UI template specification, B / S version of the application is more applicable, in fact, such a thing is not what the formal norms, just to adapt to the development environment we are now facing and organizational processes to make some expeditious efforts , And to solve some problems with the program communication and interface, try to avoid misunderstanding and friction. First, the applicable environment and object Second, the necessity Third, the technical principles Fourth, the code writing norms Fifth, the page template specification First, the applicable environment and objects This specification applies to browser-based B / S version of the software project development. Template development process template page writing and template files apply ...

About three ways to compress the size of a Web page file

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall when everyone focused on content optimization and outside the chain optimization, those successful website, Through the details of the optimization, so that the site to get a better user experience, so that their own site from the fierce competition to stand out! The current site SEO optimization details involved in all aspects, the author of this article, focus on the analysis of the Web page ...

A Concise history of search engine notes

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology Hall search engine history notes #e# 2006 Low, received a friend commissioned to help tidy up the development of the search engine history, so the Spring Festival spent a little time to sort out a rough history. Consider yourself a little note about internet history. 1, the development history of the search engine 1 A brief history of search history The origin of the "Aceh" web search engine can be traced back to 1991 years. The first ...

Hadoop-specific file types

In addition to the "normal" file, HDFs introduces a number of specific file types (such as Sequencefile, Mapfile, Setfile, Arrayfile, and bloommapfile) that provide richer functionality and typically simplify data processing. Sequencefile provides a persistent data structure for binary key/value pairs. Here, the different instances of the key and value must represent the same Java class, but the size can be different. Similar to other Hadoop files, Sequencefil ...

How to use the sitemap file in XML format to do SEO

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall General website has sitemap file, it has HTML format and XML format, Site map can help search engine crawling, help users find their own content, it is the site and users, Web sites and search engines between the bridge, especially the XML format of the map file, for the search engine crawl or have ...

Through the htaccess file to achieve SEO optimization results collection

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall htaccess file has always been the domestic and international SEO experts carefully studied a file, because the file in many cases take over the site's highest configuration (such as virtual host), If you can reasonably use the good. htaccess file, not only can achieve the unexpected SEO effect, but also can solve a lot of problems related to the site. htaccess file is exactly the file below the Linux system, as can be seen from its filename. And ...

Detailed Apache under. Htaccess file commonly used configuration

The .htaccess file is one of the most commonly used configuration files for Apache servers and is responsible for web page configuration in related directories. By htaccess file, can help us to achieve: page 301 redirect, custom 404 error page, change the file extension, allow / block specific users or directory access, directory banned, configure the index entry and other functions. In addition, .htaccess manual editing method is to use an advanced text editor such as UE or notepad2. If you do not facilitate the download or manual preparation of the file error, but also very ...

The successful way of Internet Entrepreneurship (v.): Simple add search function for website

The intermediary transaction SEO diagnoses Taobao guest Cloud host Technology Hall website completes, the maintenance and the management becomes the work which needs to carry on continuously.   In this chapter, the site will be optimized for internal links, efficient maintenance, PR upgrade way to introduce. First, optimize the internal links of the site two, the site efficient maintenance of three common sense three, improve the site PageRank have a coup four, site exchange links to beware of counterfeit five, against the vulgar ban on the site's illegal content six, simple configuration let Web server impregnable ...

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