Package org.apache.hadoop.hdfs.server.diskbalancer.command

Class PlanCommand

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hdfs.server.diskbalancer.command.Command

org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.conf.Configurable

public class PlanCommand
extends Command

Class that implements Plan Command.

Plan command reads the Cluster Info and creates a plan for specified data node or a set of Data nodes.

It writes the output to a default location unless changed by the user.

Constructor Summary

Constructors

Constructor	Description
PlanCommand(org.apache.hadoop.conf.Configuration conf)	Constructs a plan command.
PlanCommand(org.apache.hadoop.conf.Configuration conf, java.io.PrintStream ps)	Constructs a plan command.

Method Summary

Modifier and Type	Method	Description
void	execute(org.apache.commons.cli.CommandLine cmd)	Runs the plan command.
void	printHelp()	Gets extended help for this command.

Methods inherited from class org.apache.hadoop.hdfs.server.diskbalancer.command.Command

addValidCommandParameters, close, create, getClusterURI, getDataNodeProxy, getDefaultTop, getNodeList, getNodes, getOutputPath, getTopNodes, open, parseTopNodes, populatePathNames, readClusterInfo, recordOutput, setCluster, setClusterURI, setNodesToProcess, setNodesToProcess, setOutputPath, setTopNodes, verifyCommandOptions

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

Constructor Detail

PlanCommand

public PlanCommand(org.apache.hadoop.conf.Configuration conf)

Constructs a plan command.

PlanCommand

public PlanCommand(org.apache.hadoop.conf.Configuration conf,
                   java.io.PrintStream ps)

Constructs a plan command.

Method Detail

execute

public void execute(org.apache.commons.cli.CommandLine cmd)
             throws java.lang.Exception

Runs the plan command. This command can be run with various options like

-plan -node IP -plan -node hostName -plan -node DatanodeUUID

Specified by:

execute in class Command

Parameters:

cmd - - CommandLine

Throws:

java.lang.Exception

printHelp

public void printHelp()

Gets extended help for this command.

Specified by:

printHelp in class Command