Contributor: Tugdual Grall

MapR Converge Blog author, Tugdual Grall

Technical Evangelist @MapR Hadoop/NoSQL | @nantesjug leader | Slow Triathlete @resultri

Blog Posts by Tugdual Grall

October 11, 2017 | By Tugdual Grall

Getting started with MapR-DB Table Replication

Getting started with MapR-DB Table Replication Introduction MapR-DB Table Replication allows data to be replicated to another table that could be on on the same cluster or in another cluster. This is different from the automatic and intra-cluster replication...

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February 07, 2017 | By Tugdual Grall

Getting Started with MapR Client Container

Introduction The MapR Persistent Application Client Container (PACC) is a Docker-based container image that includes a container-optimized MapR client. The PACC provides secure access to MapR Converged Data Platform services, including MapR-FS, MapR-DB...

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January 19, 2017 | By Tugdual Grall

Getting Started with Kafka REST Proxy for MapR Streams

Introduction MapR Ecosystem Package 2.0 (MEP) is coming with some new features related to MapR Streams: Kafka REST Proxy for MapR Streams provides a RESTful interface to MapR Streams and Kafka clusters, making it easy to consume and produce messages...

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November 03, 2016 | By Tugdual Grall

Setting Up Spark Dynamic Allocation on MapR

Apache Spark can use various cluster managers to execute applications (Standalone, YARN, Apache Mesos). When you install Apache Spark on MapR, you can submit an application in Standalone mode or by using YARN. This blog post focuses on YARN and dynamic...

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October 19, 2016 | By Tugdual Grall

Getting started with Druid and MapR Streams

Druid is a high-performance, column-oriented, distributed data store. Druid supports streaming data ingestion and offers insights on events immediately after they occur. Druid can ingest data from multiple data sources, including Apache Kafka. This article...

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October 13, 2016 | By Tugdual Grall

Getting Started with Apache Flink and MapR Streams

Introduction Apache Flink is an open source platform for distributed stream and batch data processing. Flink is a streaming data flow engine with several APIs to create a data streams-oriented application. For an overview of Apache Flink, download a free...

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September 26, 2016 | By Tugdual Grall

Streaming Analytics in a Digitally Industrialized World

Get an introduction to streaming analytics, which allows you real-time insight from captured events and big data. There are applications across industries, from finance to wine making, though there are two primary challenges to be addressed. Did you know...

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March 10, 2016 | By Tugdual Grall

Getting Started with MapR Streams

MapR Streams is a new distributed messaging system for streaming event data at scale, and it’s integrated into the MapR converged platform. MapR Streams uses the Apache Kafka API, so if you’re already familiar with Kafka, you’ll find it particularly easy...

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February 23, 2016 | By Tugdual Grall

Why Cloud and Analytics Are Essential to the Success of 5G and IoT

We live in a world where the combination of Moore’s Law and Metcalfe’s Law heralds a data revolution. The billions of smartphone and broadband users today already generate massive quantities of data. And cheap sensors in Internet of Things (IoT) devices...

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February 09, 2016 | By Tugdual Grall

Getting Started with Sample Programs for Apache Kafka 0.9

Apache Kafka Tutorial Editor's Note: If you're interested in learning more about Apache Kafka, be sure to read the free O'Reilly book, "New Designs Using Apache Kafka and MapR Streams". Streaming data is of growing interest to many...

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January 27, 2016 | By Tugdual Grall

The Publish-Subscribe Model for Real-Time Data Streams

In this week's whiteboard walkthrough, Tugdual Grall, technical evangelist at MapR, explains the advantages of a publish-subscribe model for real-time data streams. If you're interested in viewing the German version of this video click here....

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December 22, 2015 | By Tugdual Grall

Using Apache Drill REST API to Build ASCII Dashboard With Node

Apache Drill has a hidden gem: an easy to use REST interface. This API can be used to Query, Profile and Configure Drill engine. In this blog post I will explain how to use Drill REST API to create ascii dashboards using Blessed Contrib. The ASCII Dashboard...

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September 29, 2015 | By Tugdual Grall

Introducing the MapR-DB Document Database Developer Preview

Today, MapR has announced the developer preview of MapR-DB with native support of JSON, and the new library OJAI (Open JSON Application Interface), pronounced "OH-hy." MapR-DB is a recognized NoSQL engine allowing developers to build fast and...

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August 18, 2015 | By Tugdual Grall

How to Convert a CSV file to Apache Parquet Using Apache Drill

A very common use case when working with Hadoop is to store and query simple files (such as CSV or TSV), and then to convert these files into a more efficient format such as Apache Parquet in order to achieve better performance and more efficient storage...

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July 28, 2015 | By Tugdual Grall

Apache Drill: How to create a new function?

Apache Drill allows users to explore any type of data using ANSI SQL. This is great, but Drill goes even further than that and allows you to create custom functions to extend the query engine. These custom functions have all the performance of any of...

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