High Quality Content by WIKIPEDIA articles! CloudStore (KFS, previously Kosmosfs) is Kosmix`s C++ implementation of Google File System. It parallels the Hadoop project, which is implemented in Java. CloudStore supports incremental scalability, replication, checksumming for data integrity, client side fail-over and access from C++, Java and Python. There is a FUSE module so that the file system can be mounted on Linux.