GetConf (Apache Hadoop HDFS 3.5.0 API)
Description: declaration: package: org.apache.hadoop.hdfs.tools, class: GetConf

Package org.apache.hadoop.hdfs.tools

# Class GetConf

java.lang.Object
org.apache.hadoop.conf.Configured
org.apache.hadoop.hdfs.tools.GetConf

All Implemented Interfaces:
  `org.apache.hadoop.conf.Configurable`, `org.apache.hadoop.util.Tool`

public class GetConf extends org.apache.hadoop.conf.Configured implements org.apache.hadoop.util.Tool
Tool for getting configuration information from a configuration file. Adding more options:

- If adding a simple option to get a value corresponding to a key in the configuration, use regular `GetConf.CommandHandler`. See `GetConf.Command.EXCLUDE_FILE` example.
- If adding an option that is does not return a value for a key, add a subclass of `GetConf.CommandHandler` and set it up in `GetConf.Command`. See `GetConf.Command.NAMENODE` for example. Add for the new option added, a map entry with the corresponding `GetConf.CommandHandler`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static void`
  `main(String[] args)`
  `int`
  `run(String[] args)`

  ### Methods inherited from class org.apache.hadoop.conf.Configured

  `getConf, setConf`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

  ### Methods inherited from interface org.apache.hadoop.conf.Configurable

  `getConf, setConf`

- ## Method Details

  - ### run

    public int run(String[] args) throws Exception
    Specified by:
      `run` in interface `org.apache.hadoop.util.Tool`
    Throws:
      `Exception`

  - ### main

    public static void main(String[] args) throws Exception
    Throws:
      `Exception`