Now, we will take a look at some YARN basic administration configurations, basically from Hadoop 2.0. YARN was introduced and made changes in Hadoop configuration files. Hadoop and YARN have the following basic configuration files:
core-default.xml: This file contains properties related to the system.hdfs-default.xml: This file contains HDFS-related configurations.mapred-default.xml: This configuration file contains properties related to the YARN MapReduce framework.yarn-default.xml: This file contains YARN-related properties.
You will find all these properties listed on the Apache website (http://hadoop.apache.org/docs/current/) in the configuration section, with detailed information on each property and its default and possible values.