Feb 21, 2025 · for (int k = 0; k < 2; k++) { // Assuming matrix B has 2 columns. outputKey.set(row + "," + k); outputValue.set("A," + col + "," + val); context.write(outputKey, outputValue); } else if...

Nov 30, 2011 · It may be a primitive suggestion but, you may need to change log filename with /tmp/Matrix\ Multiply/out/_logs. Spaces in directory names may not be handled automatically …

Feb 10, 2021 · I'm working on the matrix multiplication using mapreduce. I built a jar file using the code below. the code works perfectly fine with smaller matrices but when the files becomes …

Jun 15, 2019 · In this post, we will be writing a map-reduce program to do Matrix Multiplication. Requirements. You need Hadoop’s HDFS and map-reduce framework to test the program.

Mar 15, 2012 · I was running the MapReduce Matrix Multiplication program found at http://www.norstad.org/matrix-multiply/index.html. I found out that this implementation doesn't …

import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat; public class …

Feb 16, 2015 · I developed mapper and reducer classes as Map.java and Reduce.java as well as the main application class called MatrixMultiply.java. As it seen in MatrixMultiply.java code …

Matrix Multiplications via MapReduce: realized by using Hadoop in Java. 1) A Hadoop MapReduce program, TwoPhase.java, that computes the multiplication of two large-scale …

Mar 12, 2018 · MapReduce is made of three steps. Reduce: Aggregare, summarize, filter or transform and then give the output. In this post, I’ll explain how to accomplish a matrix …

This document describes how to perform matrix multiplication using MapReduce on Hadoop. It involves the following steps: 1. Installing Hadoop in standalone mode and configuring Java …