Tag: Database

Feed: Cloudera Engineering Blog » Hadoop. Author: Jon Zuanich. Continued Guest Post from Michael Schatz and Jimmy Lin Part 2: Efficient Graph Analysis in Hadoop with Schimmy In part 1, we looked at how extremely large graphs can be represented and analyzed in Apache Hadoop/MapReduce. Here in part 2 we will examine this design in more depth to identify inefficiencies, and present some simple solutions that can be applied to many Hadoop/MapReduce graph algorithms. The speedup using these techniques is substantial: as a prototypical example, we were able to reduce the running time of PageRank on a webgraph with 50.2 ... Read More

Feed: Cloudera Engineering Blog » Hadoop. Author: Jon Zuanich. This is a guest post provided by Booz Allen Hamilton data analysis consultant, Aaron Cordova.  Aaron specializes in large-scale distributed data processing systems. Working within the U.S. federal government arena provides plenty of opportunities to encounter large-scale data analysis. Projects ranging from massive health studies to high-velocity network security events to new sources of imagery and video represent a huge increase in the amount of data that must be not only stored but processed quickly and efficiently. These challenges are at once a daunting and exciting chance to turn data into ... Read More

Feed: Big Data Made Simple - One source. Many perspectives.. Author: Baiju NT. Chatbots have already left a mark for the way they have upturned our perceptions on mobile technology. In fact, chatbots are instant messaging apps that allow interaction with third-party services from within the messaging interface. They are one of the many platforms of conversational technology which also include smart speakers and wearables to name a few. Conversational technology has the strong potential to transform sectors like ecommerce, banking, healthcare, etc. This wonder technology has created such a furore that most companies look forward to incorporate it by ... Read More

Feed: Percona Database Performance Blog. Author: Emily Ikuta. Emily Ikuta  | June 26, 2017 |  Posted In: MariaDB, MySQL, Technical Webinars PREVIOUS POST Join Percona’s Chief Evangelist, Colin Charles as he presents MariaDB Server 10.2: The Complete Guide on Tuesday, June 27, 2017, at 7:00 am PDT / 10:00 am EDT (UTC-7). The new MariaDB Server 10.2 release is out. It has some interesting new features, but beyond just a list of features we need to understand how to use them. This talk will go over everything new that MariaDB 10.2 has to offer. In this webinar, we’ll learn about Window functions, ... Read More

Feed: Database Trends and Applications : All Articles. Oracle DBAs are inundated with constant work and it’s becoming more difficult to keep up with it all.  Sometimes, in the rush to balance the workload, an Oracle DBA can forget some fundamental steps which actually might help them stay ahead of the game.Some are tasks to perform just once when the database is initially deployed, others are routine tasks that should be scheduled at regular intervals, and still others are tasks outside the database itself.DBTA recently held a webinar with Bert Scalzo, senior product manager at DB PowerStudio, IDERA, who provided ... Read More

Feed: All Oracle Press Releases. Contact Info About Bank of America Bank of America is one of the world's leading financial institutions, serving individual consumers, small and middle-market businesses and large corporations with a full range of banking, investing, asset management and other financial and risk management products and services. The company provides unmatched convenience in the United States, serving approximately 47 million consumer and small business relationships with approximately 4,600 retail financial centers, approximately 15,900 ATMs, and award-winning digital banking with approximately 35 million active users and more than 22 million mobile users. Bank of America is a global ... Read More

Feed: Planet MySQL. Author: Wagner Bianchi. In this second installment of schema sharing with MariaDB MaxScale to combine SchemaRouter and ReadWriteSplit MaxScale routers, we'll go through the details of implementing it in order to shard databases among many pairs of master/slave servers. Before we move forward, I would like to highlight that you need to remove any duplicate database schema or a schema that is present on both shards. Schemas should exist in just one of the shards as when the SchemaRouter plugin starts, it’s going to read all the database schemas that exists on all the shards to get to know where ... Read More

Feed: Cloudera Engineering Blog » Hadoop. Author: John Kreisa. Cloudera is pleased to announce two new training courses: a one-day Introduction to HBase and a two-day session on Analyzing Data with Hive and Pig. These join a recently-expanded two-day Hadoop for Administrators course and our popular three-day Hadoop for Developers offering, any of which can be combined to provide extensive, customized training for your organization. Please contact sales@cloudera.com for more information regarding on-site training, or visit www.cloudera.com/hadoop-training to view our public course schedule. Cloudera’s HBase course discusses use-cases for HBase, and covers the HBase architecture, schema modeling, access patterns, and ... Read More

Feed: Cloudera Engineering Blog » Hadoop. Author: Aaron Kimball. Cloudera customers usually have two major sources of data: log files, which can be imported to Hadoop via Flume, and relational databases. Throughout the previous releases of CDH2 and CDH3, Cloudera has included a package we’ve developed called Sqoop. Sqoop can perform batch imports and exports between relational databases and Hadoop, storing data in HDFS and creating Hive tables to hold results. We described its motivation and some use cases in a previous blog post a while ago. In CDH3b2, we’ve included a greatly-expanded version of Sqoop which has had a ... Read More

Feed: Databasejournal.com - Feature Database Articles. Author: . Latches can be confusing. Sessions can wait for them and when those waits become excessive performance degrades. To many they appear to be the same as locks, but they aren't, even though lock waits, when the times get excessive, can also degrade performance. So, what are the differences between latches and locks? Let's examine both and see where they differ, what can cause latch waits and how latch waits can be investigated. Latches are similar to locks but they operate on memory to protect code and internal data structures by preventing concurrent ... Read More