Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » H »

Hadoop MapReduce

Hadoop MapReduce (Hadoop Map/Reduce) is a software framework for distributed processing of large data sets on compute clusters of commodity hardware. It is a sub-project of the Apache Hadoop project. The framework takes care of scheduling tasks, monitoring them and re-executing any failed tasks. 

According to The Apache Software Foundation, the primary objective of Map/Reduce is to split the input data set into independent chunks that are processed in a completely parallel manner. The Hadoop MapReduce framework sorts the outputs of the maps, which are then input to the reduce tasks. Typically, both the input and the output of the job are stored in a file system.

Also see Apache Hadoop and Hadoop Distributed File System (HDFS).

Top 5 Hadoop Related Questions

1. What is Apache Hadoop?
2. What is Hadoop MapReduce?
3. What is HortonWorks?
4. What is Hadoop Distributed File System?
5. What is unstructured data?







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
Small Business Technology Then and Now

Technology for small business has changed a lot in the last decade. But as technology evolves, so do the challenges. Read More »

Windows XP: Move Along, There's Nothing to See Here

After more than 12 years of holding the title of most popular operating system in the world, Windows XP is taking center stage for its final... Read More »

Report: The Role of Big Data in the Marketing Industry

According to a new study from Infogroup Targeting Solutions, we can expect to see companies spend heavily on big data marketing initiatives in... Read More »

QUICK REFERENCE
Flash Data Storage Vendor Trends

Although it is almost impossible to keep up with the pace of ongoing product releases, here are three recent highlights in the flash data storage... Read More »

15 Important Big Data Facts for IT Professionals

Keeping track of big data trends, research and statistics gives IT professionals  a solid foundation to plan big data projects. Here are 15... Read More »

Enterprise Storage Vendors

There's a number of vendors that sell enterprise storage hardware or offer cloud-based enterprise storage. View Webopedia's Enterprise storage... Read More »