HDFS (Hadoop Distributed File System) is one of the components of the Hadoop framework.
HDFS is a distributed file system, which means that it uses a cluster of servers to create a storage space.
HDFS can store any number of files. The files stored in the cluster are divided into data blocks and distributed among the different nodes of the HDFS cluster.
To guarantee data resilience, each data block is duplicated on several nodes (three by default).
Therefore, the file system is not affected if a node fails.

To handle files on a HDFS server, you can:

1. Connect to the HDFS server (<hdfsConnection variable>.OpenConnection).
2. Perform one of the following operations:
   • copy files from the local computer onto the server (<hdfsConnection variable>.CopyTo).
   • copy files from the server onto the local computer (<hdfsConnection variable>.CopyFrom).
   • create a directory on the server (<hdfsConnection variable>.CreateDirectory).
   • rename a file on the server (<hdfsConnection variable>.Rename).
   • delete a file from the server (<hdfsConnection variable>.Delete).
   • list the content of a directory on the server (<hdfsConnection variable>.List).
3. Close the connection to the server (<hdfsConnection variable>.CloseConnection).

Please note: HDFS functions are only available for Windows Vista or Windows Server 2008.