Hadoop Developer Practice Exam

The Hadoop Developer exam evaluates individuals' proficiency in developing, implementing, and optimizing Apache Hadoop-based applications and data processing workflows. Hadoop developers are responsible for designing and coding MapReduce jobs, Hive queries, Pig scripts, and Spark applications to process and analyze large volumes of structured and unstructured data stored in Hadoop clusters. This exam assesses candidates' knowledge of Hadoop ecosystem components, programming languages, and development frameworks used in big data analytics.

Skills Required

• Hadoop Ecosystem: Understanding of Apache Hadoop ecosystem components, including HDFS (Hadoop Distributed File System), YARN (Yet Another Resource Negotiator), MapReduce, Hive, Pig, Spark, and HBase, and their roles in distributed data processing and analytics.
• Programming Languages: Proficiency in programming languages commonly used in Hadoop development, such as Java, Scala, Python, or SQL, for writing MapReduce jobs, Spark applications, and Hive/Pig queries.
• Data Processing and Analysis: Skills in designing and implementing data processing and analysis workflows using Hadoop ecosystem tools and technologies to extract insights and derive value from large datasets.
• Hadoop Development Frameworks: Familiarity with development frameworks and libraries for Hadoop application development, such as Apache Hadoop APIs, Apache HiveQL, Apache Pig Latin, and Apache Spark APIs.
• Performance Optimization: Knowledge of performance optimization techniques for Hadoop applications, including data partitioning, compression, caching, and parallel processing, to improve job efficiency and throughput.

Who should take the exam?

• Hadoop Developers: Software engineers, developers, and programmers responsible for designing, coding, and testing Hadoop-based applications and data processing pipelines.
• Big Data Engineers: Data engineers, architects, and developers working with big data platforms and analytics solutions built on Apache Hadoop.
• Data Scientists and Analysts: Data scientists, analysts, and researchers seeking to leverage Hadoop ecosystem tools and technologies for data processing, analysis, and machine learning.
• Database Administrators: Database administrators interested in expanding their skills to include Hadoop development for managing and analyzing large-scale datasets.
• IT Professionals: IT professionals looking to transition into big data and Hadoop development roles and gain expertise in building scalable and distributed data processing solutions.

Course Outline

The Hadoop Developer exam covers the following topics :-

Module 1: Introduction to Apache Hadoop

• Overview of Apache Hadoop ecosystem components, including HDFS, YARN, MapReduce, and Hadoop Common.
• Understanding the distributed computing principles and scalability benefits of Hadoop for big data processing.

Module 2: Hadoop Development Environment Setup

• Setting up a Hadoop development environment using Apache Hadoop distributions or cloud-based Hadoop services.
• Installing and configuring Hadoop development tools, including Hadoop Distributed File System (HDFS) clients, Apache Hive, Apache Pig, and Apache Spark.

Module 3: MapReduce Programming

• Introduction to MapReduce programming paradigm and its key concepts, including mappers, reducers, combiners, and partitioners.
• Writing and debugging MapReduce programs in Java, Scala, or Python for processing and analyzing large-scale datasets.

Module 4: Apache Hive Development

• Introduction to Apache Hive and HiveQL (Hive Query Language) for querying and analyzing data stored in Hadoop Distributed File System (HDFS).
• Writing HiveQL queries to perform data manipulation, transformation, and analysis tasks, including joins, aggregations, and subqueries.

Module 5: Apache Pig Development

• Introduction to Apache Pig and Pig Latin scripting language for processing and analyzing large datasets in Hadoop.
• Writing Pig Latin scripts to perform data transformation, filtering, and aggregation operations using Pig's high-level data flow language.

Module 6: Apache Spark Programming

• Introduction to Apache Spark framework for distributed data processing and analytics in Hadoop and cloud environments.
• Writing Spark applications in Java, Scala, or Python using Spark APIs (RDD, DataFrame, Dataset) for batch and streaming data processing.

Module 7: Hadoop File Formats and Serialization

• Understanding Hadoop file formats and serialization techniques, including Avro, Parquet, ORC (Optimized Row Columnar), and SequenceFile formats.
• Choosing the appropriate file format and serialization method based on data characteristics, storage requirements, and processing needs.

Module 8: Performance Optimization Techniques

• Performance optimization techniques for Hadoop applications, including data partitioning, compression, indexing, and caching.
• Implementing parallel processing, data locality optimization, and resource management strategies to improve job efficiency and throughput.

Module 9: Hadoop Application Testing and Debugging

• Testing Hadoop applications using unit tests, integration tests, and end-to-end tests to validate functionality and performance.
• Debugging and troubleshooting Hadoop application errors, exceptions, and performance issues using logging, debugging tools, and diagnostic techniques.

Module 10: Best Practices and Case Studies

• Reviewing best practices, use cases, and real-world examples of Hadoop application development and optimization.
• Analyzing case studies and success stories of organizations leveraging Hadoop for big data analytics, data warehousing, and business intelligence initiatives.