new API allows both mappers and reducers to control the execution flow by overriding the run() method. Controlling mappers by writing aMapRunnable, but no equivalent exists for reducers. …

There are several obvious differences between the old and new APIs as follows: The new API tends to use virtual classes instead of interfaces because it is more advantageous for …

Jul 9, 2015 · This article will make you understand about big Data and hadoop programming old and new API. Hadoop experts are going to differentiate between Old API and New API on the …

Feb 11, 2013 · There are two flavors of mapreduce APIs - old APIs (org.apache.hadoop.mapred) and new APIs (org.apache.hadoop.mapreduce). It's a bit of a long history but the current state …

There are several notable differences between the two APIs: The new API is in the org.apache.hadoop.mapreduce package (and subpackages). The old API can still be found in …

In the new API, the reduce() method passes In the Old API, the reduce() method method values as a java.lang.Iterable passes values as a java.lang.Iterator passes values So This is the Main …

Apr 4, 2015 · • The new API favors abstract classes over interfaces, since these are easier to evolve. the Mapper and Reducer interfaces in the old API are abstract classes in the new API. …

There are several obvious differences between new APIs and old APIs: 1. New APIs tend to be used Abstract class Instead of interfaces, because it is easier to expand. For example, you …

The new API (which is also known as Context Objects) was primarily designed to make the API easier to evolve in the future and is type incompatible with the old one. The new API came into …

Oct 16, 2014 · This tutorial point will provide the detailed explanation about hadoop and big data. This will help you to understand the thing very clearly.