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hadoopmapreduce
Dmitry
Dmitry

Reputation: 161

Hadoop 2.0. Does it support new MapReduce 2 only or both classic and new MapReduce?

Does Hadoop 2.0 support new MapReduce 2 (YARN) only or both classic and new MapReduce?

Upvotes: 1

Views: 298

Answers (1)

Engineiro
Engineiro

Reputation: 1146

It supports both. The difference is that what you call classic mapreduce will now run as an application instead of integrated as part of the framework.

YARN allows the community to build other mapreduce-like applications to run on the Hadoop platform.

An example of another MR2 application can be found in the first link below called DIstributedShell

Brief Explanation MR2 and YARN

The very bottom of this article states it explicitly. All anyone changing to MRv2 would have to do is recompile their source code and it should run.

More Detailed Explanation

Upvotes: 2

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