HDFS or name node part name space

[#1]

what is name space and whats its function??

[#2]

@Sonu ,

From the blog post An Introduction to HDFS Federation back in 2011:

Namespace manages directories, files and blocks. It supports file system operations such as creation, modification, deletion and listing of files and directories.

If this doesn't answer your question, by all means post more specifics about what you're after.

Bill