Quick Cheat Sheet for Big Data Technologies

• Data Engineering
  • Data collection/aggregation/transfer
  • Data processing
  • Data storage
  • Data access
  • Data coordination
• Data Science
  • Machine Learning (Data analytics)

Key Open-Source Data Engineering Technologies

Following is the list of open-source tools and frameworks which are used to achieve several requirements of data engineering:

• Data collection/aggregation/transfer
  • Data collection/aggregation from streaming sources
    • Apache Flume: Collection of libraries for collecting, aggregating and moving data from different sources, such as Web Server Logs, into HDFS or HBase in real-time.
  • Data transfer between Hadoop & RDBMS systems
    • Apache Sqoop: A tool used for efficiently transferring bulk data between Apache Hadoop and structured datastores such as relational databases.
• Data processing
  • Apache Hadoop: A framework, forming the core of Big Data technologies, is used for the distributed processing of large data sets across clusters of computers. Following are some of the key components:
    • Hadoop Distributed File System (HDFS™): A distributed file system that provides high-throughput access to application data
    • Hadoop MapReduce: Parallel Processing of large data sets
    • Hadoop YARN: A framework for job scheduling and cluster resource management.
    • Hadoop Common: Common utilities that support the other Hadoop modules
  • Apache Spark: An in-memory data processing engine which could handle large-scale data processing in an easy manner.
  • Apache Crunch: A framework for writing, testing, and running MapReduce pipelines
  • Apache Oozie: A workflow scheduler system to manage Hadoop jobs.
  • Apache Avro: A data serialization system
• Data storage
  • HDFS: HDFS, being part of Apache Hadoop framework, is a distributed file system that provides high-throughput access to application data.
  • Apache HBase: A distributed, scalable, data store that could be ideally used for random, realtime read/write access to the Big Data of the size such as billions of rows with millions of columns.
• Data access
  • Apache Hive: A framework for querying and managing large datasets residing in distributed file storage systems.
  • Pig: A platform for analyzing large data sets that consists of a high-level language for expressing and evaluating data analysis programs.
  • Hue: A web interface for analyzing data with Apache Hadoop. An open-source product developed by Cloudera.
  • Apache DataFu: Libraries for large-scale data processing in Hadoop and Pig. The libraries could be further categorized into following manner:
    • Collection of useful user-defined functions for data analysis in Apache Pig
    • Collection of libraries for incrementally processing data using Hadoop MapReduce.
• Data coordination
  • Apache Zookeeper: Highly reliable distributed coordination service which is used for maintaining configuration information, naming, providing distributed synchronization, and providing group services to applications such as HBase.

Key Open-Source Data Science Technologies

Following is the list of open-source/free tools which could be used for data analytics:

• Machine Learning (Data analytics)
  • Apache Mahout: Collection of libraries for classification, clustering and collaborative filtering of Hadoop data.
  • R Project: A free software environment for statistical computing and graphics. Very useful for working with machine learning algorithms.
  • R Studio: A powerful and productive user interface for R.
  • GNU Octave: A high-level interpreted language, primarily intended for numerical computations related with linear and nonlinear problems, and for performing other numerical experiments. Very useful for machine learning modeling.