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Commands Guide Overview All hadoop commands are invoked by the bin/hadoop script. Running the hadoop script without any arguments prints the description for all commands. uDeploy IBM UrbanCode Deploy is a tool for automating application deployments through your environments. It is designed to facilitate rapid feedback and continuous delivery in agile development while providing the audit trails, versioning and approvals needed in production. Watch the 4 minute demo UrbanCode Deploy provides Automated, consistent deployments and rollbacks of applications Orchestration of changes across servers, tiers and components Configuration and security differences across environments Clear visibility: what is deployed where and who changed what Integrated with middleware, provisioning and service virtualization Typical Uses

22 free tools for data visualization and analysis You may not think you've got much in common with an investigative journalist or an academic medical researcher. But if you're trying to extract useful information from an ever-increasing inflow of data, you'll likely find visualization useful -- whether it's to show patterns or trends with graphics instead of mountains of text, or to try to explain complex issues to a nontechnical audience. There are many tools around to help turn data into graphics, but they can carry hefty price tags. The cost can make sense for professionals whose primary job is to find meaning in mountains of information, but you might not be able to justify such an expense if you or your users only need a graphics application from time to time, or if your budget for new tools is somewhat limited. If one of the higher-priced options is out of your reach, there are a surprising number of highly robust tools for data visualization and analysis that are available at no charge. Data cleaning

protobuf - Protocol Buffers - Google's data interchange format What is it? Protocol Buffers are a way of encoding structured data in an efficient yet extensible format. Google uses Protocol Buffers for almost all of its internal RPC protocols and file formats. Install single node Hadoop on CentOS 7 in 5 simple steps First install CentOS 7 (minimal) (CentOS-7.0-1406-x86_64-DVD.iso) I have download the CentOS 7 ISO here ### Vagrant Box

Features - UrbanCode, Products, uDeploy IBM UrbanCode Deploy is a tool for automating application deployments through your environments. It is designed to facilitate rapid feedback and continuous delivery in agile development while providing the audit trails, versioning and approvals needed in production. Watch the 4 minute demo Big Data Is As Misunderstood As Twitter Was Back In 2008 Boonsri Dickinson, Business Insider In 2008, when Howard Lindzon started StockTwits, no one knew what Twitter was. Obviously, that has changed. Benchmarking Cassandra Scalability on AWS - Over a million writes per second by Adrian Cockcroft and Denis Sheahan Netflix has been rolling out the Apache Cassandra NoSQL data store for production use over the last six months. As part of our benchmarking we recently decided to run a test designed to validate our tooling and automation scalability as well as the performance characteristics of Cassandra. Adrian presented these results at the High Performance Transaction Systems workshop last week.

How to create a hadoop user on PHD cluster ? – All Help & Support While starting up with PHD, often administrators create users to allow them access HDFS and execute application. Below are some handy steps for user creation. You may perform these steps at the client machine/nodes. Tutorial: MySQL Load Balancing with HAProxy 1. Introduction Applications would typically connect to a database cluster by opening connections on one of the nodes in order to run transactions. If the database node fails, the client would need to reconnect to another database node before it can continue to serve requests. Installing Hadoop on a single node – Part 2 In the last post, we saw the setup till updating .bashrc and .bash_profile files as required. Let’s see the next steps now. Configuration We need to configure JAVA_HOME variable for the hadoop environment as well. The configuration files will be usually in the ‘conf’ subdirectory while the executables will be in the ‘bin’ subdirectory. The important files in ‘conf’ directory arehadoop-env.sh, hdfs-site.xml, core-site.xml, mapred-site.xml. hadoop-env.sh – Open the hadoop-env.sh file.

Using HAProxy to Build a More Featureful Elastic Load Balancer - Sharing the Tech Though Shareaholic is hosted in the AWS cloud, we avoid depending on Amazon’s virtualized cloud services whenever possible. If we ever hit a bottleneck in AWS, I want to be able to switch providers without needing to rebuild a core piece of our architecture. I also don’t want our tech team to have to make product and infrastructure sacrifices just so that we conform to AWS standard practices. Load balancing with HAProxy was the first example of a service that Amazon provides, that we felt was better to manage ourselves. Here’s how we did it. Why HAProxy?