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

Class QueryCommand

java.lang.Object

org.apache.hadoop.conf.Configured

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

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

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.conf.Configurable

public class QueryCommand
extends Command

Gets the current status of disk balancer command.

Constructor Summary

Constructors

Constructor	Description
QueryCommand(org.apache.hadoop.conf.Configuration conf)	Constructs QueryCommand.
QueryCommand(org.apache.hadoop.conf.Configuration conf, PrintStream ps)

Method Summary

Modifier and Type	Method	Description
void	execute(org.apache.commons.cli.CommandLine cmd)	Executes the Client Calls.
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 Details

QueryCommand

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

Constructs QueryCommand.

Parameters:

conf - - Configuration.

QueryCommand

public QueryCommand(org.apache.hadoop.conf.Configuration conf,
 PrintStream ps)

Method Details

execute

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

Executes the Client Calls.

Specified by:

execute in class Command

Parameters:

cmd - - CommandLine

Throws:

Exception

printHelp

public void printHelp()

Gets extended help for this command.

Specified by:

printHelp in class Command