Apache Hadoop
Hadoop is massively scalable platform commonly used to process big data workloads. At its core, it is composed of a distributed file system (HDFS) and a resource manager (YARN).
Hadoop provides a high level of durability and availability while still being able to process computational analytical workloads in parallel. The combination of availability, durability, and scalability of processing makes Hadoop a natural fit for Big Data workloads.
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Running Apache Hive 3, new features and tips and tricks
Categories: Big Data, Business Intelligence, DataWorks Summit 2019 | Tags: Druid, Hive, Kafka, Cloudera, Data Warehouse, JDBC, LLAP, Active Directory, Release and features, Hadoop
Apache Hive 3 brings a bunch of new and nice features to the data warehouse. Unfortunately, like many major FOSS releases, it comes with a few bugs and not much documentation. It is available since…
Jul 25, 2019
Spark Streaming part 2: run Spark Structured Streaming pipelines in Hadoop
Categories: Data Engineering, Learning | Tags: Spark, Apache Spark Streaming, Big Data, File Format, Data Governance, Python, Streaming, Hadoop
Spark can process streaming data on a multi-node Hadoop cluster relying on HDFS for the storage and YARN for the scheduling of jobs. Thus, Spark Structured Streaming integrates well with Big Data…
May 28, 2019
Publish Spark SQL DataFrame and RDD with Spark Thrift Server
Categories: Data Engineering | Tags: Hive, Spark, Thrift, JDBC, Hadoop, SQL
The distributed and in-memory nature of the Spark engine makes it an excellent candidate to expose data to clients which expect low latencies. Dashboards, notebooks, BI studios, KPIs-based reports…
Mar 25, 2019
Multihoming on Hadoop
Categories: Infrastructure | Tags: HDFS, Kerberos, Network, Hadoop
Multihoming, which means having multiple networks attached to one node, is one of the main components to manage the heterogeneous network usage of an Apache Hadoop cluster. This article is an…
Mar 5, 2019
Apache Knox made easy!
Categories: Big Data, Cyber Security, Adaltas Summit 2018 | Tags: Ambari, Hive, Knox, Ranger, Shiro, Solr, JDBC, Kerberos, LDAP, Active Directory, REST, SSL/TLS, Hadoop, SSO
Apache Knox is the secure entry point of a Hadoop cluster, but can it also be the entry point for my REST applications? Apache Knox overview Apache Knox is an application gateway for interacting in a…
Feb 4, 2019
Monitoring a production Hadoop cluster with Kubernetes
Categories: DevOps & SRE | Tags: Knox, Thrift, Docker, Elasticsearch, Graphana, Kubernetes, Node.js, Prometheus, Python, Shinken, Hadoop
Monitoring a production grade Hadoop cluster is a real challenge and needs to be constantly evolving. The software we use today is based on Nagios. Very efficient when it comes to the simplest…
Dec 21, 2018
One week to discuss technology in a Moroccan riad
Categories: Adaltas Summit 2018, Learning | Tags: Flink, Knox, CDSW, Deep Learning, Gatsby, Kubernetes, Node.js, React.js, Hadoop
Adaltas organise the year its first conference between the 22 and 26 of October. On the agenda of these 5 days of conference: discuss technology in one of the most beautiful riad of Marrakech. Mix the…
By David WORMS
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Clusters and workloads migration from Hadoop 2 to Hadoop 3
Categories: Big Data, Infrastructure | Tags: HBase, HDFS, Oozie, Slider, Spark, YARN, Docker, Erasure Coding, Operation, Rolling Upgrade, SLA, Hadoop
Hadoop 2 to Hadoop 3 migration is a hot subject. How to upgrade your clusters, which features present in the new release may solve current problems and bring new opportunities, how are your current…
Jul 25, 2018
Deep learning on YARN: running Tensorflow and friends on Hadoop cluster
Categories: Data Science | Tags: Spark, Spark MLlib, YARN, Deep Learning, GPU, PyTorch, TensorFlow, XGBoost, Hadoop
With the arrival of Hadoop 3, YARN offer more flexibility in resource management. It is now possible to perform Deep Learning analysis on GPUs with specific development environments, leveraging…
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Apache Hadoop YARN 3.0 – State of the union
Categories: Big Data, DataWorks Summit 2018 | Tags: HDFS, MapReduce, YARN, Cloudera, Docker, GPU, Hortonworks, Release and features, Hadoop
This article covers the ”Apache Hadoop YARN: state of the union” talk held by Wangda Tan from Hortonworks during the Dataworks Summit 2018. What is Apache YARN? As a reminder, YARN is one of the two…
May 31, 2018
Running Enterprise Workloads in the Cloud with Cloudbreak
Categories: Big Data, Cloud Computing, DataWorks Summit 2018 | Tags: AWS, Cloudbreak, HDP, Azure, OpenStack, Operation, Hadoop, GCP
This article is based on Peter Darvasi and Richard Doktorics’ talk Running Enterprise Workloads in the Cloud at the DataWorks Summit 2018 in Berlin. It presents Hortonworks’ automated deployment tool…
May 28, 2018
Present and future of Hadoop workflow scheduling: Oozie 5.x
Categories: Big Data, DataWorks Summit 2018 | Tags: Hive, Oozie, Sqoop, CDH, HDP, REST, Hadoop
During the DataWorks Summit Europe 2018 in Berlin, I had the opportunity to attend a breakout session on Apache Oozie. It covers the new features released in Oozie 5.0, including future features of…
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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…
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Apache Apex with Apache SAMOA
Categories: Data Science, Events, Tech Radar | Tags: Apex, Flink, Samoa, Storm, Machine Learning, Tools, Hadoop
Traditional Machine Learning Batch Oriented Supervised - most common Training and Scoring One time model building Data set Training: Model building Holdout: Paremeter tuning Test: Accuracy Online…
Jul 17, 2016
Apache Apex: next gen Big Data analytics
Categories: Data Science, Events, Tech Radar | Tags: Apex, Flink, Kafka, Storm, Data Science, Machine Learning, Tools, Hadoop
Below is a compilation of my notes taken during the presentation of Apache Apex by Thomas Weise from DataTorrent, the company behind Apex. Introduction Apache Apex is an in-memory distributed parallel…
Jul 17, 2016
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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Jul 14, 2016
Red Hat Storage Gluster and its integration with Hadoop
Categories: Big Data | Tags: HDFS, GlusterFS, Red Hat, Storage, Hadoop
I had the opportunity to be introduced to Red Hat Storage and Gluster in a joint presentation by Red Hat France and the company StartX. I have here recompiled my notes, at least partially. I will…
By David WORMS
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Composants for CDH and HDP
Categories: Big Data | Tags: Flume, Hive, Oozie, Sqoop, Zookeeper, Cloudera, CDH, Hortonworks, HDP, Hadoop
I was interested to compare the different components distributed by Cloudera and HortonWorks. This also gives us an idea of the versions packaged by the two distributions. At the time of this writting…
By David WORMS
Sep 22, 2013
State of the Hadoop open-source ecosystem in early 2013
Categories: Big Data | Tags: Flume, Kafka, Mahout, Mesos, Phoenix, Pig, File Format, Hadoop
Hadoop is already a large ecosystem and my guess is that 2013 will be the year where it grows even larger. There are some pieces that we no longer need to present. ZooKeeper, hbase, Hive, Pig, Flume…
By David WORMS
Jul 8, 2013
The state of Hadoop distributions
Categories: Big Data | Tags: Cloudera, Hortonworks, Intel, Oracle, Hadoop
Apache Hadoop is of course made available for download on its official webpage. However, downloading and installing the several components that make a Hadoop cluster is not an easy task and is a…
By David WORMS
May 11, 2013
Apache Hive Essentials How-to by Darren Lee
Categories: Business Intelligence, Learning | Tags: Hive, File Format, UDF, Hadoop, SQL
Recently, I’ve been ask to review a new book on Apache Hive called “Apache Hive Essentials How-to” written by Darren Lee and published by Packt Publishing. To say it short, I sincerely recommend it. I…
By David WORMS
Apr 23, 2013
Definitions of machine learning algorithms present in Apache Mahout
Categories: Data Science | Tags: Algorithms, Mahout, Сlassification, Clustering, Machine Learning, Hadoop
Apache Mahout is a machine learning library built for scalability. Its core algorithms for clustering, classfication and batch based collaborative filtering are implemented on top of Apache Hadoop…
By David WORMS
Mar 8, 2013
Merging multiple files in Hadoop
Categories: Hack | Tags: HDFS, File system, Hadoop
This is a command I used to concatenate the files stored in Hadoop HDFS matching a globing expression into a single file. It uses the “getmerge” utility of but contrary to “getmerge”, the final…
By David WORMS
Jan 12, 2013
Hadoop and R with RHadoop
Categories: Business Intelligence, Data Science | Tags: HBase, HDFS, MapReduce, Thrift, Data Analytics, Learning and tutorial, R, Hadoop
RHadoop is a bridge between R, a language and environment to statistically explore data sets, and Hadoop, a framework that allows for the distributed processing of large data sets across clusters of…
By David WORMS
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Timeseries storage in Hadoop and Hive
Categories: Data Engineering | Tags: HDFS, Hive, CRM, File Format, timeseries, Tuning, Hadoop
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By David WORMS
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Hadoop and HBase installation on OSX in pseudo-distributed mode
Categories: Big Data, Learning | Tags: HBase, Big Data, Hue, Deployment, Infrastructure, Hadoop
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By David WORMS
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Storage and massive processing with Hadoop
Categories: Big Data | Tags: HDFS, Nutch, Cloudera, Google, Hadoop
Apache Hadoop is a system for building shared storage and processing infrastructures for large volumes of data (multiple terabytes or petabytes). Hadoop clusters are used by a wide range of projects…
By David WORMS
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