Hadoop's Distributed File System is designed to reliably store very large files across machines in a large cluster. It is inspired by the ![[WWW]](/wiki/modern/img/moin-www.png){kind=small}
GoogleFileSystem.
DFS requirements. Summarizes the requirements Hadoop DFS should be targeted for, and outlines further development steps towards achieving this requirements.
Hadoop Upgrade. Describes a step-by-step procedure for manual transition of Hadoop cluster to a newer software version, and outlines enhancements intended to make the upgrade simple and safe.