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Database Systems: Design, Implemen...

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

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Chapter
Section
BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 14, Problem 9RQ
Textbook Problem
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What are the key assumptions made by the Hadoop Distributed File System approach?

Program Plan Intro

Hadoop Distributed File System (HDFS):

  • Hadoop Distributed File System (HDFS) is the primary data storage systems usually used by the Hadoop applications.
  • It was developed as an infrastructure for the Apache Nutch web search engine project and now it is an Apache Hadoop subproject.
  • It includes a NameNode and DataNode architecture to implement a distributed file system that is capable of providing high-performance access to data across Hadoop clusters.

Explanation of Solution

Key assumptions made by HDFS:

HDFS approach to distributed data is based on the following key assumptions.

  • High Volume:
    • As the files in the HDFS are extremely large, it is organized into physical blocks.
    • Therefore, it has reduced the number of blocks per file thus simplifying the metadata overhead of tracking the blocks in each file...

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