What are the configuration files for a Hadoop cluster?
The parameter configuration file of Hadoop cluster includes:
- core-site.xml is the core configuration file of Hadoop, which specifies the fundamental settings of a Hadoop cluster, such as the file system type and storage location.
- The configuration file hdfs-site.xml defines settings for the Hadoop Distributed File System (HDFS), such as replica count and data block size.
- The mapred-site.xml is a configuration file for MapReduce that defines settings related to MapReduce, such as the type of task scheduler and the address of the job tracker.
- yarn-site.xml is the configuration file for the YARN resource manager, which defines settings related to YARN such as resource manager address and node manager resource allocation.
- hadoop-env.sh: Configuration file for Hadoop environment variables, which defines the runtime environment variables for Hadoop such as Java path and Hadoop log storage location.
- yarn-env.sh is a file that configures the YARN environment variables, setting parameters like the Java path and the location for storing YARN logs during runtime.
- Mapred-env.sh is a configuration file that sets environment variables for the MapReduce runtime, such as the Java path and the location for storing MapReduce logs.
- Slaves: A file in the Hadoop cluster that lists the nodes, defining the names or IP addresses of the slave nodes.