While Hadoop version 2 with YARN still provides full MapReduce capability and backwards compatibility with version 1, it also opens the door to many other “application frameworks” that are not based on MapReduce processing.
The scheduling and resource management have been separated from the management of MapReduce pipelines. Hadoop YARN is the new replacement for the monolithic MapReduce component found in version 1. For those familiar with Hadoop version 1, there are two core components the Hadoop Distributed File System and the integrated MapReduce distributed processing engine. Apache Hadoop YARN: Moving beyond MapReduce and Batch Processing with Apache Hadoop 2Īpache Hadoop presents the user with a vast ecosystem of tools and applications.
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