Datanode
Explore the function of DataNodes within the Hadoop Distributed File System. Understand how data blocks are stored locally, reported to the NameNode, and how to verify data storage using terminal commands and the DataNode web interface.
We'll cover the following...
We'll cover the following...
DataNodes
The Datanode stores the actual data. It stores the data blocks on its local filesystem and sends a block report to the Namenode.
The data for HDFS files will be stored in the directory specified as the value for the configuration setting dfs.datanode.data.dir. The ...