Tag: testing

Feed: Planet MySQL; Author: Marco; Recently Fred published a post (http://lefred.be/content/mysql-group-replication-is-sweet-but-can-be-sour-if-you-misunderstand-it) in which he was stating, I had publish my blog (http://www.tusacentral.net/joomla/index.php/mysql-blogs/191-group-replication-sweet-a-sour.html) which contains few “misunderstanding”. All the people that knows me, also know I have no problem to admit if I do a mistake, at the end doing mistake is a way of learning and be afraid of the ones who don’t do them. But at the same time, I need to have proof of it. As I provide proof of what I wrote with numbers and tests (all available on github). Let us put down the basis of ... Read More

Feed: Hadoop – Cloudera Engineering Blog. Author: Cy Jervis. Synopsis This article introduces a new Apache Hadoop feature called S3Guard. S3Guard addresses one of the major challenges with running Hadoop on Amazon’s Simple Storage Service (S3), eventual consistency. We outline the problem of S3’s eventual consistency, how it affects Hadoop workloads, and explain how S3Guard works. Problem Although Apache Hadoop has support for using Amazon Simple Storage Service (S3) as a Hadoop filesystem, S3 behaves different than HDFS.  One of the key differences is in the level of consistency provided by the underlying filesystem.  Unlike HDFS, S3 is an eventually ... Read More

Feed: Google Cloud Big Data and Machine Learning Blog. Author: Google Cloud Big Data and Machine Learning Blog Team. Innovation in data processing and machine learning technology Thursday, August 3, 2017 By Rendy Bambang Jr., Data Engineering Lead, Traveloka; Agung Pratama, Data Engineer, Traveloka; and Gaurav Anand, Solutions Engineer, Google Cloud Traveloka is a travel technology company based in Jakarta, Indonesia, currently operating in six countries. Founded in 2012 by former Silicon Valley engineers, its goal is to revolutionize human mobility. One of the most strategic parts of our business is a streaming data processing pipeline that powers a number ... Read More

Feed: Planet MySQL; Author: Shlomi Noach; orchestrator 3.0 Pre-Release is now available. Most notables are Raft consensus, SQLite backend support, orchestrator-client no-binary-required client script. TL;DR You may now set up high availability for orchestrator via raft consensus, without need to set up high availability for orchestrator's backend MySQL servers (such as Galera/InnoDB Cluster). In fact, you can run a orchestrator/raft setup using embedded SQLite backend DB. Read on. orchestrator still supports the existing shared backend DB paradigm; nothing dramatic changes if you upgrade to 3.0 and do not configure raft. orchestrator/raft Raft is a consensus protocol, supporting leader election and ... Read More

Feed: CDH – Cloudera Engineering Blog. Author: Todd Lipcon. A few weeks back, Cloudera announced CDH 4.1, the latest update release to Cloudera’s Distribution including Apache Hadoop. This is the first release to introduce truly standalone High Availability for the HDFS NameNode, with no dependence on special hardware or external software. This post explains the inner workings of this new feature from a developer’s standpoint. If, instead, you are seeking information on configuring and operating this feature, please refer to the CDH4 High Availability Guide. Background Since the beginning of the project, HDFS has been designed around a very simple ... Read More

Feed: All Oracle Press Releases. Oracle, OpenSSL and SafeLogic today announced a seed investment in developing the next generation open source OpenSSL 1.1 FIPS 140-2 module, and called for others to join the effort. OpenSSL is the most widely used and respected cryptographic library protecting data transfers across computer networks.  The Federal Information Processing Standard (FIPS) 140-2 is a joint U.S. and Canadian government security standard for testing cryptographic modules, the objective of which is to ensure the use of strong and validated cryptographic protection in U.S. and Canadian government systems. However, it’s also widely respected and informally accepted by ... Read More

Feed: Neo4j Graph Database. Author: Bryce Merkl Sasaki, Aspiring Graphista. By Michael Hunger, Developer Relations | August 3, 2017  I am very happy to announce the first public release of the Neo4j graph algorithms library. You can use these graph algorithms on your connected data to gain new insights more easily within Neo4j. You can use these graph analytics to improve results from your graph data, for example by focusing on particular communities or favoring popular entities. We developed this library as part of our effort to make it easier to use Neo4j for a wider variety of applications. Many ... Read More

Feed: SQL Server Blog. Author: SQL Server Team. Microsoft is pleased to announce availability of SQL Server 2017 Release Candidate 2 (RC2), which is now available for download. The release candidate represents an important milestone for SQL Server.  Development of the new version of SQL Server along most dimensions needed to bring the industry-leading performance and security of SQL Server to Windows, Linux, and Docker containers is complete.  We are continuing to work on performance and stress testing of SQL Server 2017 to get it ready for your most demanding Tier 1 workloads, as well as some final bug fixes ... Read More

Feed: All Oracle Press Releases. Today, Oracle announced that Brazil's largest fashion retailer, Lojas Renner has deployed Oracle Retail to transforms operations and establishes a foundation for growth. Lojas Renner operates over 470 stores under the Renner, Youcom and Camicado brands. Lojas Renner is simplifying operations and offering a shopping experience to inspire its customers even further and continue to grow. Over time, each of the brands had selected and customized multiple solutions over the years. This disparate solution landscape made it complicated to upgrade solutions and keep pace with market trends with new innovations. In 2014, Renner embarked on ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Shreya Gupta. 1.Introduction to Big data and Cloud Computing Cloud computing is the use of computing resources (hardware and software) that are delivered as a service over a network (typically the Internet). It’s a virtualization framework. It is like resource on demand whether it be storage, computing etc. Cloud follows pay per usage model. You need to pay the amount of resource you use. This computing service by cloud charges you based only on the amount of computing resources we use. So for example, if you want to give demo to ... Read More