Node Package Json

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 ...

In Serengeti, there are two most important and most critical functions: one is virtual machine management and the other is cluster software installation and configuration management. The virtual machine management is to create and manage the required virtual machines for a Hadoop cluster in vCenter. Cluster software installation and configuration management is to install Hadoop related components (including Zookeeper, Hadoop, Hive, Pig, etc.) on the installed virtual machine of the operating system, and update the configuration files like Namenode / Jobtracker / Zookeeper node ...

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 ...

Recently MongoDB in hack news is frequently shot. Many people even claim to hate Mongodb,david Mytton on his blog to expose MongoDB many existing problems. But those who hate have a lot in common, as a comeback: Russell Smith brings a summary of years of work experience. Russell Smith has worked as an OPS and a large website scaling advisor and has helped Guardian, Experian and many other companies, MongoDB Lond ...

VMware suddenly released its first open source Paas--cloudfoundry this April. In the months since its release, the author has been concerned about its evolution and benefited from its architectural design, and felt the need to write to share it with you. This article will be divided into two parts: the first part mainly introduces the architecture design of Cloudfoundry, from the module that it contains, to the information flow of each part, how the modules coordinate and cooperate; The second part will be based on the first part, how to use Clou in your data center ...

"Editor's note" Docker and CoreOS are excellent "graduates" of the Silicon Valley incubator, and it is said that two bosses have a good personal relationship, Docker do container engines, CoreOS container management, cooperation is very happy, but with the release of Rocket gradually "parted". Although Docker and CoreOS are seeking "Jane", but Docker "Jane" is to strive to achieve the most convenient use of the user, CoreOS "Jane" is the pursuit of the ultimate lightweight, which will be the future of container technology, in fact, it is difficult ...

The establishment of enterprise security building Open source SIEM platform, SIEM (security information and event management), as the name suggests is for security information and event management system for most businesses is not cheap security system, this article combined with the author's experience describes how to use open source software Analyze data offline and use algorithms to mine unknown attacks. Recalling the system architecture to WEB server log, for example, through logstash WEB server to collect query log, near reality ...

BEIJING, December 28, 2012--Oracle has announced the latest version of Oracle Big Data Machine (Oracle DA Appliance) and Oracle Large Data connector (Oracle Big date connectors) The aim is to help enterprises win large data development opportunities to realize their business transformation. Oracle Large Data Machine x3-2 is a cost-effective hardware and software integration System, and has been a new upgrade. It integrates Intel's new processor and the most ...

Cassandra is a mixed relational database, similar to Google's bigtable. Its main function is richer than the dynomite (distributed Key-value Storage System), but the support degree is inferior to the document storage MongoDB (the open source product between the relational database and the non relational database, the relational database has the richest function, most resembles the relational database. The supported data structure is very loose and is a JSON-like Bjson format, so you can store more complex data types. ) Cassa ...

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 ...