In the big data era traditional data management and analytic systems are no more adequate. Hence, to manage and fruitfully exploit the huge amount of available heterogeneous data, novel data models, programming paradigms, information systems, and network architectures are needed. The course addresses the challenges arising in the Big Data era. Specifically, the course will cover how to collect, store, retrieve, and analyze big data to mine useful knowledge and insightful hints. The course covers not only data model and data analytics aspects but also novel programming paradigms (e.g., MapReduce, Spark RDDs) and discusses how they can be exploit to support big data scientists to extract insights from data.

The course aims at providing: • Knowledge of the main problems and opportunities arising in the big data context and technological characteristics of the infrastructures and distributed systems used to deal with big data (e.g., Hadoop and Spark). • Ability to write distributed programs to process and analyze data by means of novel programming paradigms: Map Reduce and Spark programming paradigms • Knowledge of the (relational and non-relational) databases systems that are used to store big data

Object-oriented programming skills, Java language, and basic knowledge of traditional database concepts (relational model and SQL language).

Lectures (45 hours) • Introduction to Big data: characteristics, problems, opportunities (3 hours) • Hadoop and its ecosystem: infrastructure and basic components (3 hours) • Map Reduce programming paradigm (10.5 hours) • Spark: Spark Architecture and RDD-based programming paradigm (14.5 hours) • Streaming data analysis: Spark Streaming (6 hours) • Data mining and Machine learning libraries: Spark MLlib (6 hours) • Databases for Big data: data models, design, and querying (e.g., HBase) (1.5 hours) Laboratory activities (15 hours) • Developing of applications by means of Hadoop and Spark (15 hours)

The course consists of Lectures (45 hours) and Laboratory sessions (15 hours). The laboratory sessions are focused on the main topics of the course (Map Reduce, Spark, and MLlib) (15 hours). The Laboratory sessions allow experimental activities on the most widespread open-source products.

Copies of the slides used during the lectures, examples of written exams and exercises, and manuals for the activities in the laboratory will be made available. All teaching material is downloadable from the course website or the Portal. Reference books: • Matei Zaharia, Bill Chambers. Spark: The Definitive Guide (Big Data Processing Made Simple). O'Reilly Media, 2018. • Advanced Analytics and Real-Time Data Processing in Apache Spark. Packt Publishing, 2018. • Tom White. Hadoop, The Definitive Guide. (Third edition). O'Reilly Media, 2015. • Matei Zaharia, Holden Karau, Andy Konwinski, Patrick Wendell. Learning Spark (Lightning-Fast Big Data Analytics). O’Reilly, 2015.

Modalità di esame: Prova scritta (in aula);

Exam: Written test;

... The exam aims at assessing (i) the ability of the students to write distributed programs to process and analyze big data by means of novel programming paradigms and frameworks (the Map Reduce programming paradigm and the Spark RDD-based programming paradigm) and (ii) the knowledge of the students of the main issues related to the big data topic and the technological infrastructures and distributed systems, including scalable relational and non-relational databases systems, that are used to deal with big data. The exam consists of a written exam that lasts 2 hours. Specifically, the written exam is composed of two parts: - 2 programming exercises (Map Reduce- and RDD-based programming) to be solved using the Java language (27 points) - 2 multiple choice questions on all the topics addressed during the course (4 points). The programming exercises aim at evaluating the ability of the students to write distributed programs to analyze big data by means of the novel programming paradigms that are introduced in the course. The multiple choice questions are used to evaluate the knowledge of the theoretical concepts of the course and in particular the knowledge of the characteristics of the main technological infrastructures and distributed systems (Hadoop and Spark), including scalable relational and non-relational databases systems, that are used to deal with big data. The evaluation of the programming exercises is based on the correctness and efficiency of the proposed solutions. For each multiple choice question, the students achieve two points if the answer is correct and zero points if the answer is wrong or missing. The exam is open book (notes and books can be used during the exam). The exam is passed if the mark of the written exam is greater than or equal to 18 points.

Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.