Home » Author Archives: Tugdual Grall

Author Archives: Tugdual Grall

Tugdual Grall, an open source advocate and a passionate developer, is a Chief Technical Evangelist EMEA at MapR. He currently works with the European developer communities to ease MapR, Hadoop, and NoSQL adoption. Before joining MapR, Tug was Technical Evangelist at MongoDB and Couchbase. Tug has also worked as CTO at eXo Platform and JavaEE product manager, and software engineer at Oracle. Tugdual is Co-Founder of the Nantes JUG (Java User Group) that holds since 2008 monthly meeting about Java ecosystem. Tugdual also writes a blog available at http://tgrall.github.io/

Getting Started with Apache Flink on MapR Converged Data Platform

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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. It is very common for Flink applications to use Apache Kafka for data input and output. This article will provide you with easy steps for using Apache Flink with ...

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Getting started with Apache Flink and Kafka

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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 data streams oriented application. It is very common for Flink applications to use Apache Kafka for data input and output. This article will guide you into the steps to use Apache Flink with ...

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Getting Started with MapR Streams

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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 to get started with MapR Streams. Although MapR Streams generally uses the Apache Kafka programming model, there are a ...

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Getting Started with Sample Programs for Apache Kafka 0.9

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Streaming data is of growing interest to many organizations, and most applications need to use a producer-consumer model to ingest and process data in real time. Many messaging solutions exist today on the market, but few of them have been built to handle the challenges of modern deployment related to IoT, large web based applications and related big data projects. ...

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Using Apache Drill REST API to Build ASCII Dashboard With Node

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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 looks like: Prerequisites Node.js Apache Drill 1.2 For this post, you will use ...

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Apache Drill : How to Create a New Function?

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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 the Drill primitive operations, but allowing that performance makes writing these functions a little trickier ...

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Introduction to MongoDB Security

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Last week at the Paris MUG, I had a quick chat about security and MongoDB, and I have decided to create this post that explains how to configure out of the box security available in MongoDB. You can find all information about MongoDB Security in following documentation chapter: http://docs.mongodb.org/manual/security/         In this post, I won’t go into ...

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Moving My Beers From Couchbase to MongoDB

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Few days ago I have posted a joke on Twitter:                       Moving my Java from Couchbase to MongoDB pic.twitter.com/Wnn3pXfMGi — Tugdual Grall (@tgrall) January 26, 2015 So I decided to move it from a simple picture to a real project. Let’s look at the two phases of this so called ...

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How to create a pub/sub application with MongoDB ? Introduction

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In this article we will see how to create a pub/sub application (messaging, chat, notification), and this fully based on MongoDB (without any message broker like RabbitMQ, JMS, … ). So, what needs to be done to achieve such thing: an application “publish” a message. In our case, we simply save a document into MongoDB another application, or thread, subscribe ...

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Big Data… Is Hadoop the good way to start?

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In the past 2 years, I have met many developers, architects that are working on “big data” projects. This sounds amazing, but quite often the truth is not that amazing. TL;TR You believe that you have a big data project?           Do not start with the installation of an Hadoop Cluster — the “how“ Start to ...

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