Apache Status 500

This paper is an excerpt from the book "The Authoritative Guide to Hadoop", published by Tsinghua University Press, which is the author of Tom White, the School of Data Science and engineering, East China Normal University. This book begins with the origins of Hadoop, and integrates theory and practice to introduce Hadoop as an ideal tool for high-performance processing of massive datasets. The book consists of 16 chapters, 3 appendices, covering topics including: Haddoop;mapreduce;hadoop Distributed file system; Hadoop I/O, MapReduce application Open ...

"Editor's note" in the famous tweet debate: MicroServices vs. Monolithic, we shared the debate on the microservices of Netflix, Thougtworks and Etsy engineers. After watching the whole debate, perhaps a large majority of people will agree with the service-oriented architecture. In fact, however, MicroServices's implementation is not simple. So how do you build an efficient service-oriented architecture? Here we might as well look to mixrad ...

Summary: SEO need to start from a small, any little detail will have a huge impact. Error links are difficult to completely avoid in the site, 404 pages as the error link return page in the user experience played a crucial role. 404 The Role of the page: when the user entered the wrong SEO need to start small, any small details will have a huge impact. Error links are difficult to completely avoid in the site, 404 pages as the error link return page in the user experience played a crucial role. 404 page Function: The page returned when the user entered the wrong link. 404 pages ...

Hadoop is an open source distributed computing platform, which consists of two parts: MapReduce algorithm execution and a distributed file system. Infoq has published a review of the speed of Hadoop, written by Jeremy Zawodny. This time, Infoq's senior Java editor Scott Delap and Hadoop project director Doug cutting an interview. In this INFOQ interview, cutting discusses how Hadoop is in the ya ...

According to relevant data, China's mobile internet users in the first half of 2013 has exceeded the 500 million mark, is expected in the first quarter of 14, the domestic mobile internet users will be over the PC, mobile phone users more than 1 billion, 3G users continue to grow, as well as 4G strong momentum, have spawned mobile large data explosion. 　　A lot of new data is emerging all the times, and the mobile Internet is affecting all aspects of human life. This will be an unprecedented era. All companies and institutions are or are becoming mobile internet organizations. All companies and institutions will eventually be big data organizations for cloud computing. Move ...

It is based on this trend that IBM released its own public cloud products, the product name is IBM Bluemix, is currently in the open testing phase. Bluemix is built on the Apache Open source project Cloud Foundry, and provides the quality service (services) developed by IBM and its partners for use by IT practitioners. This article takes the core component of Bluemix platform-Bluemix Java Runtime as the main line, to introduce to the reader IBM public ...

MySQL tutorial automatic stop cause analysis and solution Start menu-run-services.msc find MySQL service and double-click the Recovery tab to fail for the first time: default is "Do not operate", change to "restart service". Adding "0" at the bottom of "Restart Service: ___ Minutes" means that the service restarts immediately if it terminates unexpectedly. Click OK to make the settings effective. At this point you end the MYSQL-NT process in the Task Manager, you will find that the end is not lost but pay attention, so mys ...

The intellectual Property College of Tongji University Zhou a few years ago, domestic intellectual property industry has a popular joke: a domestic authorities to its subordinate enterprises issued a notice on the protection of intellectual property, the Enterprise Manager after receiving documents, do not know which business unit to implement, and finally the document was granted to the Enterprise Security Office. A few years later, from the ignorance of intellectual property to a smattering of "problem patent" or "garbage patent", the different attitude and value orientation of dealing with intellectual property rights profoundly reflect the change of corporate intellectual property culture concept. Enterprise Knowledge production ...