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MapReduce

18 posts

Add Suffix and Prefix to all Columns in PySpark

Last Updated: 23 July 2025

In this article, we are going to add suffixes and prefixes to all columns using Pyspark in Python.An open-source, distributed computing framework and set of libraries for ...read more

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Technical Scripter

Python Programs

Technical Scripter 2022

Python Framework

How to Configure the Eclipse with Apache Hadoop?

Last Updated: 23 July 2025

Eclipse is an IDE(Integrated Development Environment) that helps to create and build an application as per our requirement. And Hadoop is used for storing and processing b...read more

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Installation Guide

Difference Between MapReduce and Hive

Last Updated: 23 July 2025

MapReduce is a model that works over Hadoop to access big data efficiently stored in HDFS (Hadoop Distributed File System). It is the core component of Hadoop, which divid...read more

Data Engineering

Difference between MapReduce and Pig

Last Updated: 23 July 2025

MapReduce is a model that works over Hadoop to access big data efficiently stored in HDFS (Hadoop Distributed File System). It is the core component of Hadoop, which divid...read more

Difference Between

How to Execute Character Count Program in MapReduce Hadoop?

Last Updated: 15 July 2025

Prerequisites: Hadoop and MapReduceRequired setup for completing the below task.Java InstallationHadoop installation Our task is to count the frequency of each character p...read more

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Data Engineering

MapReduce Architecture

Last Updated: 04 August 2025

MapReduce Architecture is the backbone of Hadoop’s processing, offering a framework that splits jobs into smaller tasks, executes them in parallel across a cluster, and me...read more

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Software Engineering

MapReduce - Combiners

Last Updated: 15 July 2025

Map-Reduce is a programming model that is used for processing large-size data-sets over distributed systems in Hadoop. Map phase and Reduce Phase are the main two importan...read more

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Data Engineering

Hadoop - Reducer in Map-Reduce

Last Updated: 31 July 2025

MapReduce is a core programming model in the Hadoop ecosystem, designed to process large datasets in parallel across distributed machines (nodes). The execution flow is di...read more

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Data Engineering

MapReduce Program - Weather Data Analysis For Analyzing Hot And Cold Days

Last Updated: 23 December 2021

Here, we will write a Map-Reduce program for analyzing weather datasets to understand its data processing programming model. Weather sensors are collecting weather informa...read more

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Hadoop - Mapper In MapReduce

Last Updated: 31 July 2025

In Hadoop’s MapReduce framework, the Mapper is the core component of the Map Phase, responsible for processing raw input data and converting it into a structured form (key...read more

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Data Engineering

Hadoop MapReduce - Data Flow

Last Updated: 04 August 2025

MapReduce is a Hadoop processing framework that efficiently handles large-scale data across distributed machines. Unlike traditional systems, it works directly on data sto...read more

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Data Engineering

Map Reduce and its Phases with numerical example.

Last Updated: 24 June 2025

Map Reduce is a framework in which we can write applications to run huge amount of data in parallel and in large cluster of commodity hardware in a reliable manner.Phases ...read more

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MapReduce Program - Finding The Average Age of Male and Female Died in Titanic Disaster

Last Updated: 08 October 2021

All of us are familiar with the disaster that happened on April 14, 1912. The big giant ship of 46000-ton in weight got sink-down to the depth of 13,000 feet in the North ...read more

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How MapReduce completes a task?

Last Updated: 12 July 2025

Application master changes the status for the job to "successful" when it receives a notification that the last task for a job is complete. Then it learns that the job has...read more

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Operating Systems

Job Initialisation in MapReduce

Last Updated: 04 August 2025

Before a MapReduce job can start processing data, it goes through a crucial initialization phase. This phase prepares the system by setting up resources, validating input/...read more

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