August 2015
Intermediate to advanced
278 pages
5h 54m
English
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Chapter 7. Writing Your Own YARN Applications
In the first chapter, we talked about the shortcomings of Hadoop 1.x framework. Hadoop 1.x framework was restricted to MapReduce programming only. You had to write data processing logic as map and reduce tasks. With the introduction of YARN in Hadoop 2.x version, you can now execute different data processing algorithms over the data stored in HDFS. YARN separates the resource management and the data processing frameworks into two different components, ResourceManager and ApplicationMaster.
In the last few chapters, you learned about the application execution flow, and how YARN components communicate and manage the life cycle of an application. You executed a MapReduce application over a YARN cluster ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.