Database
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CodaLab – Data Science competitions
Categories: Data Science, Adaltas Summit 2018, Learning | Tags: Database, Infrastructure, MySQL, Node.js, Machine Learning, Python
CodaLab Competition is a platform for code execution in the field of Data Science. It is a web interface on which a user can submit code or results and compare themselves to others. Let’s see how it…
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Yahoo's Vespa Engine
Categories: Tech Radar | Tags: Database, Elasticsearch, Search Engine, Tools
Vespa is Yahoo’s fully autonomous and self-sufficient big data processing and serving engine. It aims at serving results of queries on huge amounts of data in real time. An example of this would be…
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MariaDB integration with Hadoop
Categories: Infrastructure | Tags: Hive, Database, HA, MariaDB, Hadoop
During a workshop with one of our customers, Adaltas has identified a potential risk to use MariaDB’s High Availability (HA) strategy. Since the customer selected Cloudera’s CDH 5 distribution, the…
By David WORMS
Jul 31, 2017
Managing authorizations with Apache Sentry
Categories: Data Governance | Tags: Ansible, Hue, Database, Deployment, LDAP, Nikita, Sentry, CDH
Apache Sentry is a system for enforcing fine grained role based authorization to data and metadata stored on a Hadoop cluster. With this article, we will show you how we are using Apache Sentry at…
By Axel JACQIN
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Hive, Calcite and Druid
Categories: Big Data | Tags: Analytics, Druid, Hive, Database, Hadoop
BI/OLAP requires interactive visualization of complex data streams: Real time bidding events User activity streams Voice call logs Network trafic flows Firewall events Application KPIs Traditionnal…
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Testing the Oracle SQL Connector for Hadoop HDFS
Categories: Data Engineering | Tags: HDFS, Database, File system, Oracle, CDH, SQL
Using Oracle SQL Connector for HDFS, you can use Oracle Database to access and analyze data residing in HDFS files or a Hive table. You can also query and join data in HDFS or a Hive table with other…
By David WORMS
Jul 15, 2013
Options to connect and integrate Hadoop with Oracle
Categories: Data Engineering | Tags: Avro, HDFS, Hive, MapReduce, Sqoop, Database, Java, NoSQL, Oracle, R, RDBMS, SQL
I will list the different tools and libraries available to us developers in order to integrate Oracle and Hadoop. The Oracle SQL Connector for HDFS described below is covered in a follow up article…
By David WORMS
May 15, 2013
Installing and using MADlib with PostgreSQL on OSX
Categories: Data Science | Tags: Database, Greenplum, Statistics, PostgreSQL, SQL
We cover basic installation and usage of PostgreSQL and MADlib on OSX and Ubuntu. Instructions for other environments should be similar. PostgreSQL is an Open Source database with enterprise…
By David WORMS
Jul 7, 2012