What are the configuration files in Hadoop?

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Here is a list of Hadoop Configuration Files with their description

File	Description
hadoop-env.sh	It contains ENVIRONMENT variables used in SCRIPTS to run Hadoop.
core-site.sh	It contains configuration settings for Hadoop, such as Core I/O COMMON to HDFS and MapReduce.
hdfs-site.sh	It contains configuration settings for HDFS daemons, name NODES, secondary namenodes, and the data nodes.
mapred-site.sh	It contains configuration settings for MapReduce daemons, such as the job trackers and the task trackers.
Masters	It is a list of machines that run a secondary name node.
Slaves	It is a list of machines that run data nodes and task-trackers.

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