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Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482

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BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 2, Problem 18RQ
Textbook Problem
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What is Hadoop, and what are its basic components?

Explanation of Solution

Hadoop:

  • “Hadoop” is a Java based, open source software framework that is used for distributed storage and distributed processing of large data sets.
  • Open source means, it is freely available and the source code can be changed according to users requirements.
  • Hadoop uses low-cost hardware that can create clusters of thousands of computer nodes to store and process data.
  • Hadoop was developed by Google to work on distributed file systems and parallel processing, which is now supported by Apache Software Foundation.

Components of Hadoop:

The main components of Hadoop are Hadoop Distributed File System (HDFS), MapReduce, and YARN (Yet Another Source Negotiator).

Hadoop Distributed File System (HDFS)

  • Hadoop Distributed File System (HDFS) is a component of Hadoop that is used to store large amounts of data of various formats running on a cluster at high speeds.
  • It usually works on the principle of storing less number of large files rather than huge number of small files.
  • HDFS uses the write-once, read many model to achieve high throughput...

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Chapter 2 Solutions

Database Systems: Design, Implementation, & Management
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