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This article is my second time reading Hadoop 0.20.2 notes, encountered many problems in the reading process, and ultimately through a variety of ways to solve most of the. 　　Hadoop the whole system is well designed, the source code is worth learning distributed students read, will be all notes one by one post, hope to facilitate reading Hadoop source code, less detours. 1 serialization core Technology The objectwritable in 0.20.2 version Hadoop supports the following types of data format serialization: Data type examples say ...

Intermediary trading http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnosis Taobao guest cloud host technology Hall often see webmaster friends to discuss keyword optimization, also saw webmaster friends" accumulate "keyword. 　　Here for you to share a use of the search engine to do keyword optimization experience. Statement: This experience is applicable to a certain technical capacity of the station, requiring the server has a Java operating environment, such as JDK,TOMC ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall to do business Network marketing also some days, looking at the company's Web site traffic rising, Product sales gradually slightly better, a number of days to pay a return, psychological more comfortable. I am not a marketing professional, came to this company to do this line, but also spot, in the broken net, write a summary is also the person who wrote the blog ...

The intermediary transaction SEO diagnose Taobao guest Cloud host technology hall as SEO optimization stationmaster, a lot of work is our people can not complete, such as the relevant SEO data statistics, and in the SEO optimization technology, the use of its own optimization tools is a technology range, the tool itself can also achieve a certain SEO tasks, 　　So we need to use some SEO optimization tools to help us do a better job. In this article, I will discuss the validation of XML sitemap, bulk HTTP header response Check, check the International Web page speed ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall from do stand to now more than a year, the original station for a purpose: Fight!" a year ago, I am in the school library to do network management, that is, to maintain the electronic reading room of the machine system to ensure the normal network. To tell the truth, in fact, when in the time is nothing to understand, or even download the film will not, I was holding to learn ...

Research on the construction of medical and health data center based on HBase and the synchronization of heterogeneous database Fang Shiwei to determine the data model, this paper puts forward the idea of HBase C-o-r modeling based on the E-R modeling of relational database, Then comprehensive analysis of Health department promulgated medical and Health metadata standards and the actual situation of some health institutions to achieve health information HBase Data Center construction. In order to realize the synchronization of data transparently to data center in heterogeneous relational database of medical institutions, the following schemes are proposed. First of all, in the data format proposed heterogeneous database production ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall in the understanding SEO journey, we must be familiar with the common SEO noun. 　　It is also a noun that we tend to confuse more easily. 1. Wrong link wrong link with dead link is not a meaning, the wrong link is a nonexistent link. The difference between a bad link and a dead link: the error link is for the user's negligence, the input link error, the requested link does not exist. Dead link is the original access to the site is normal, because the modification of the site data or delete caused the site does not exist this page ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall in the domestic Baidu for the case of SEO, included amount is undoubtedly a way to enhance the site traffic, But throughout the large and small web site, the author found that a lot of sites are not satisfactory, and some sites millions of of the page is only included in thousands of pages, according to the rate of collection to calculate, is really one of the nine cattle Mao. That ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall UI is the user Interface (UI) abbreviation. UI design refers to the overall design of the software's human-computer interaction, Operation logic, and interface aesthetics. The UI design is divided into 3 directions from the content of the work. It is mainly determined by the 3 factors of UI research, which is the research tool, the research person ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall now many webmaster choose to use the forum to build stations, because more convenient, as long as the construction has a certain popularity, The daily work is just very easy to manage posts and users, do not need too many article edits and content updates. Therefore, to Discuz and Phpwind as the representative of the Forum site has been very hot. Below on the next forum ...