dfs is whta?

dfs is Stand-alone file system, Read and write functions are currently available。 The use of multi-threaded file segmentation merge。

dfs which services?

The current service is as follows:

    1、NameNode => Read or write files need to query the existence of metadata, all requests through the NameNode

    2、DataNode => File data storage

    3、MetaServer => Metadata is provided

how to use?

The NameNode and DataNode and MetaServer services need to be started before they can be used。

    First configure dfs-site.properties

    1、cd dfs
    2、java Start.java
    3、java MetaServer.java

Starting NameNode and DataNode creates a _SUCCESS file in the configuration directory

At this point you can run

    
    java DFSClient.java

Operation flow chart