Apache Hadoop

2.

Hadoop Architecture Overview

2.1.

Hadoop Evolution

2.1.1.

Hadoop 1.x Architecture

2.1.1.1.

Monolithic Design

2.1.1.2.

JobTracker and TaskTracker

2.1.1.3.

Limitations and Bottlenecks

2.1.2.

Hadoop 2.x Improvements

2.1.2.1.

Introduction of YARN

2.1.2.2.

Modular Architecture

2.1.2.3.

Resource Management Separation

2.1.3.

Hadoop 3.x Enhancements

2.1.3.1.

2.1.3.2.

Multiple NameNode Support

2.1.3.3.

Performance Improvements

2.2.

Core Components

2.2.1.

Hadoop Distributed File System (HDFS)

2.2.1.1.

Distributed Storage Layer

2.2.1.2.

Block-Based Storage

2.2.2.

Yet Another Resource Negotiator (YARN)

2.2.2.1.

Resource Management Layer

2.2.2.2.

Application Scheduling

2.2.3.

MapReduce Framework

2.2.3.1.

Distributed Processing Engine

2.2.3.2.

Batch Processing Model

2.2.4.

2.2.4.1.

Shared Libraries

2.2.4.2.

Common Utilities

2.2.4.3.

Configuration Management

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3. Hadoop Distributed File System (HDFS)