Tag: testing

Feed: Hadoop – Cloudera Engineering Blog. Author: Aaron Myers. The release of Apache Hadoop 2, as announced today by the Apache Software Foundation, is an exciting one for the entire Hadoop ecosystem. Cloudera engineers have been working hard for many months with the rest of the vast Hadoop community to ensure that Hadoop 2 is the best it can possibly be, for the users of Cloudera’s platform as well as all Hadoop users generally. Hadoop 2 contains many major advances, including (but not limited to): High availability for the HDFS NameNode, which eliminates the previous SPOF in HDFS. Support for ... Read More

Feed: IBM Big Data & Analytics Hub - All Content; Author: andrea-braida; Justin Saul is Senior Director of Technology at A Place for Mom, Inc. (APFM). Justin’s career began in the start-up space, where he founded several successful businesses. He joined You’ve Got Leads—a division of APFM that delivers web-based relationship management solutions for the senior care industry—as a Director of Operations focused on strategic IT projects, and then moved into running all technology for the company’s start-up divisions. Justin has considerable breadth and depth of experience in building technical teams, architectures and processes.  It’s no secret that most successful ... Read More

Feed: R-bloggers. Author: Fabio Veronesi. Power analysis is extremely important in statistics since it allows us to calculate how many chances we have of obtaining realistic results. Sometimes researchers tend to underestimate this aspect and they are just interested in obtaining significant p-values. The problem with this is that a significance level of 0.05 does not necessarily mean that what you are observing is real.In the book “Statistics Done Wrong” by Alex Reinhart (which you can read for free here: https://www.statisticsdonewrong.com/) this problem is discussed with an example where we can clearly see that a significance of 0.05 does not mean that ... Read More

Feed: AWS Partner Network (APN) Blog. Author: Barbara Kessler. Continuing our MSP Partner Spotlight series from last week’s post, Unlocking Hybrid Architecture’s Potential with DevOps, automation is another critical area of capability for next generation Managed Service Providers (MSPs). Automation incorporating elements such as configuration templates, code deployment automation, and self-healing infrastructure reduces the need for manual interventions, the potential for errors, and the operating costs for MSPs.  This week we hear from Cloudreach (APN Premier and MSP Partner, with numerous AWS Competencies) and their perspective on the value of automation in the cloud. Automation in the Cloud By: Neil ... Read More

Feed: IBM Big Data & Analytics Hub - All Content; Author: cindy-russell; It seems that we’re reaching the point where the Internet of Things (IoT) is moving from the domain of enthusiastic early-adopters to the more challenging, more profitable territory of mainstream enterprise technology.In particular, companies in industries that depend on the attention and loyalty of large numbers of consumers – retail and air travel, for example –have already woken up to the possibilities. If you can recognize an individual customer’s mobile device as they move through an airport or walk past your store, you can potentially take action to improve that ... Read More

Feed: IBM Big Data & Analytics Hub - All Content; Author: chris-gillar; If you read a lot of development blogs nowadays, you’ll probably notice a common theme: developers don’t want to deal with databases. They want to focus on designing, building, testing, and deploying applications that deliver value to the business as quickly as possible.Because of this, developers often instinctively reach for whichever database platform minimizes the amount of time needed to design a schema, and allows them to get started fast. Focusing on the speed of development and the ability to “fail fast” is commendable, but this approach doesn’t ... Read More

Feed: All - O'Reilly Media. Author: Brian Foster. Water droplets. (source: Pixabay) Download "Deploying Reactive Microservices" to learn how your deployment pipeline can embrace failure, and discover the strategies and tools for delivering highly resilient systems. In this podcast episode, I talk about reactive microservice deployments with Edward Callahan, a senior engineer with Lightbend. We discuss the difference between a normal deployment pipeline and one that’s fully reactive, as well as the impact reactive deployments have on software teams. Callahan mentioned how a deployment platform must be developer and operator friendly in order to enable the highly productive, iterative development ... Read More

Feed: Hadoop – Cloudera Engineering Blog. Author: Justin Kestelyn. One of the first questions Cloudera customers raise when getting started with Apache Hadoop is how to select appropriate hardware for their new Hadoop clusters. Although Hadoop is designed to run on industry-standard hardware, recommending an ideal cluster configuration is not as easy as delivering a list of hardware specifications. Selecting hardware that provides the best balance of performance and economy for a given workload requires testing and validation. (For example, users with IO-intensive workloads will invest in more spindles per core.) In this blog post, you’ll learn some of the ... Read More

Feed: Hadoop – Cloudera Engineering Blog. Author: Colin McCabe. One of the key principles behind Apache Hadoop is the idea that moving computation is cheaper than moving data — we prefer to move the computation to the data whenever possible, rather than the other way around. Because of this, the Hadoop Distributed File System (HDFS) typically handles many “local reads” reads where the reader is on the same node as the data: Initially, local reads in HDFS were handled the same way as remote reads: the client connected to the DataNode via a TCP socket and transferred the data via ... Read More

Feed: Planet big data. Author: Ryan Skinner. Amazon to acquire Whole FoodsUnderstand what the acquisition means for the rest of retail. Read report The Whole Foods acquisition by Amazon weeks ago was only the latest milepost in the latter’s inexorable march to the top of retail. The company sold $136 billion worth of products in 2016 – more than any other online retailer (and just over a third of what Wal-Mart did). And we find that Amazon is big and gaining on Google for product-related searches (be they early or late in the purchase journey). This means that more and more purchase journeys will ... Read More