Distributed filesystem
In Hadoop, we know that data is stored in a distributed computing environment, so the files are scattered across the cluster. We should have an efficient filesystem to manage the files in Hadoop. The filesystem used in Hadoop is HDFS, elaborated as Hadoop Distributed File System.
HDFS
HDFS is extremely scalable and fault tolerant. It is designed to efficiently process parallel processing in a distributed environment in even commodity hardware. HDFS has daemon processes in Hadoop, which manage the data. The processes are NameNode, DataNode, BackupNode, and Checkpoint NameNode.
We will discuss HDFS elaborately in the next chapter.
Get Hadoop Essentials now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
