Cloud Informations

When it comes to big data, a lot of people are starting to focus on big data and Hadoop and data mining and data visualization, and I'm starting a business, and I've got a lot of questions about the companies and individuals that have come across a lot of traditional data industries to transition to Hadoop, and most of them are similar. 　　 　　So I want to sort out some of the issues that may be of concern to many people. 　　What about the Hadoop version? So far, as a half foot forward to the Hadoop gate, I suggest that you choose the Hadoop 1.x. Many people may say, Had ...

Http://www.aliyun.com/zixun/aggregation/13383.html ">spark is a cluster computing platform originating from the Amplab of the University of California, Berkeley, which is based on memory computing and has more performance than Hadoop , even with disk, the calculation of the iteration type will increase by 10 times times. Spark is a rare all-round player, starting from multiple iterations, eclectic data Warehouse, stream processing and graph calculation. Spar ...

In the long run, the contribution of open source must be a two-way street. However, recent statistics show that the company's contribution to open source projects is much lower than the enterprise's use of open source code. 　　As more and more companies increase their contributions to open source projects, there is a need to debunk some common misconceptions about open source contributions. 1. Open source has already earned its eye. In 1964, a young woman named Kitty Genovese a victim of public apathy, a phenomenon that sparked a "bystander effect" debate. Simply put, this term describes the phenomenon of the table ...

This article does not mention the principle of the role of Hadoop and its surrounding projects. 　　The word Hadoop has been in vogue for years, and when it comes to big data, you think of Hadoop, what is the role of Hadoop? Official definition: Hadoop is a software platform for developing and running large-scale data processing. The core word is platform, that is to say 11545.html "> We have a lot of data, there are several computers, we know should be the task of processing data to the various computers, but do not know how ...

http://www.aliyun.com/zixun/aggregation/17197.html "> Beijing time May 29 news, according to Foreign Science and technology website The Next Web report, Samsung in Wednesday local time in San Francisco held a" Voice from the body "the press conference. 　　At the meeting, the company's president and chief policy officer, Young Sohn, released an open source platform Sami's fitness tracking wrist strap--simband. Simband can ...

If your company now relies on Open-source software like OpenSSL, it's time to be more careful. ComputerWorld's Richi Jennings lashed out and said: "It was a terrible, horrific failure." "Steven J. Vaughan-nichols of ZDNet is not prone to posturing against open source, he just said the Heartbleed incident was just the worst time for open source." Finally, ZDNet's Chris ducket ...

The value of open source is beyond doubt, the current industry's attitude towards open source is almost one-sided support and affirmation. Although the value of things often comes from the essence, how can we judge the value of open source? 　　is its value reflected in the contribution of the Code, or in other levels? In terms of the nature of open source, allowing the public to view and access its source code is one of the most powerful and representative features. 　　As the code adopts such a free and open access strategy, it will naturally be regarded as the core value of the open source mechanism. Code line This fake for open source value ...

Add access to multiple NoSQL repositories and provide report acceleration and interactive Dashboard interface: For the booming data application environment, Splunk has launched a proprietary integrated data analysis product hunk, alias Splunk Analytics for Hadoop and NoSQL data Stores, as the name suggests, it can transform Hadoop and NoSQL databases of unstructured, yuan-beginning data, quickly and easily into the information that can assist business decision-making, provide search, ...

In the SIP project design process, for its huge log at the beginning to consider using the task decomposition of multithreading mode to analyze statistics, in my previous article "Tiger Concurrent Practice-Log analysis of parallel decomposition design and implementation" mentioned. But because the content of statistics is still very simple, so the use of memcache as a counter, combined with MySQL to complete the access control and statistics work. However, in the future, the work of massive log analysis needs to be prepared. Now the most fire ...

The novice to do Hadoop most headaches all kinds of problems, I put my own problems and solutions to sort out the first, I hope to help you. First, the Hadoop cluster in namenode format (Bin/hadoop namenode-format) After the restart cluster will appear as follows (the problem is very obvious, basically no doubt) incompatible namespaceids in ...: Namenode Namespaceid = ...

Now Apache Hadoop has become the driving force behind the development of the big data industry. 　　Techniques such as hive and pig are often mentioned, but they all have functions and why they need strange names (such as Oozie,zookeeper, Flume). Hadoop has brought in cheap processing of large data (large data volumes are usually 10-100GB or more, with a variety of data types, including structured, unstructured, etc.) capabilities. 　　But what's the difference? Enterprise Data Warehouse and relational number today ...

For users who have just come into contact with large data, it is difficult to distinguish between hive and hbase. 　　This paper will try to analyze it from the aspects of its definition, characteristic, limitation and application scene. 　　What is Hive? The Apache hive is a data warehouse at the top of the Hadoop (Distributed system infrastructure), noting that this is not a database. Hive can be viewed as a user programming interface that does not store and compute data itself; it relies on HDFs (Hadoop Distributed File System) and ...

There is no doubt that a large number of open source private cloud technology has emerged as a substitute for commercial software. They have different maturity and adoption rate. 　　These open source platforms come from Eucalyptus, Citrix cloudplatform, Opennebula and OpenStack. 　　For some users using these platforms, commercial private cloud software is simply submerged. If you consider building a private cloud, HubSpot, CTO Jim O ' Neill of the Cambridge Network marketing software start-up company, says he ...

The new PostgreSQL open source database is built into a widely used JSON data Interchange format and targets http://www.aliyun.com/zixun/aggregation/13461.html "> 　　MongoDB is the NoSQL market in the non relational data store represented. PostgreSQL released the first beta version of PostgreSQL 9.4 in Thursday. This beta includes a large number of Web applications for fast growth ...

1 download Eclipse http://www.eclipse.org/downloads/Eclipse Standard 4.3.2 64-bit 2) download the corresponding Eclipse plug-in for the Hadoop version My Hadoop is 1.0.4, so download Hadoop-eclipse-plugin-1.0.4.jar download address: Http://download.csdn.net/detai ...

Prior to the preparation of the installation of the JDK, the following start SSH password login, here we use the Pietty tool, of course, you can directly under Linux directly operate SSH (Secure Shell), execute the command ssh-keygen-t RSA Generation key, located in ~/.ssh folder

Black Duck Software published the eighth annual summary of Open source software surveys in April this year, as well as a summary of corporate investment trends in OSS. 　　This year's survey focused on the important role of OSS in enterprise strategic decision-making, the role of OSS key functions in developing new technologies, the role played in community development, and its impact on everyday life. "This year's findings are mainly focused on the role of OSS in strategic decision making in the future, which is a huge shift that will affect future open source soft ...

Framer is an Open-source prototype framework based on the http://www.aliyun.com/zixun/aggregation/33906.html ">javascript, can help developers and designers easily create very realistic application prototypes, including filters, elastic physics, complete 3D effects, and so on. Framer can also be applied to the desktop and mobile devices, through which developers or designers simply create images, events and other modules to build and test the complex ...

As more and more Hadoop clusters are transformed from experimental projects to production, companies begin to incorporate critical information related to their operations and customer situations, which makes it increasingly imperative to enforce data protection in the analysis cycle. 　　But it turns out that the traditional add-on solution is not enough to withstand the real threats facing companies today, and that security must be unremittingly from the start, and should not be seen as an afterthought in the past. And that's exactly what Hortonworks wants to do by acquiring the XA secure company ...

This article will analyze two common fault-tolerant scenarios for Hadoop MapReduce (including MRv1 and MRv2), the first of which is that a task is blocked, the resource is not released for a long time, and how to handle it? The other is that a map task is in the node when the task is run, when the map http://www.aliyun.com/zixun/aggregation/17034.html ">task is complete ...