---
title: "What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?"  
description: "What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?"  
author: "Anonymous User"  
published: 2015-01-20  
updated: 2020-09-16  
canonical: https://www.mindstick.com/interview/2291/what-is-the-characteristic-of-streaming-api-that-makes-it-flexible-run-mapreduce-jobs-in-languages-like-perl-ruby-awk-etc  
category: ".net"  
tags: ["hadoop"]  
reading_time: 1 minute  

---

# What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

**Hadoop Streaming** allows to use arbitrary programs for the Mapper and Reducer phases of a MapReduce job by having both Mappers and Reducers receive their input on stdin and emit output (key, value) pairs on stdout.

## Answers

### Answer by Anonymous User

**Hadoop Streaming** allows to use arbitrary programs for the Mapper and Reducer phases of a MapReduce job by having both Mappers and Reducers receive their input on stdin and emit output (key, value) pairs on stdout.


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Original Source: https://www.mindstick.com/interview/2291/what-is-the-characteristic-of-streaming-api-that-makes-it-flexible-run-mapreduce-jobs-in-languages-like-perl-ruby-awk-etc

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