CommandShell.SubCommand (Apache Hadoop Common 3.5.0 API)

java.lang.Object

org.apache.hadoop.tools.CommandShell.SubCommand

Enclosing class:: CommandShell

protected abstract class CommandShell.SubCommand extends Object

Base class for any subcommands of this shell command.

Constructor Summary

Constructors

Modifier

Constructor

Description

protected

SubCommand()
Method Summary

Modifier and Type

Method

Description

abstract void

execute()

abstract String

getUsage()

boolean

validate()

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- SubCommand
  
  protected SubCommand()
Method Details
- validate
  
  public boolean validate()
- execute
  
  public abstract void execute() throws Exception
  
  Throws:
  
  Exception
- getUsage
  
  public abstract String getUsage()