org.apache.hadoop.fs.shell

Class Count

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.fs.shell.Command

org.apache.hadoop.fs.shell.FsCommand

org.apache.hadoop.fs.shell.Count

All Implemented Interfaces:

Configurable

@InterfaceAudience.Private
@InterfaceStability.Evolving
public class Count
extends FsCommand

Count the number of directories, files, bytes, quota, and remaining quota.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DESCRIPTION
static String	NAME
static String	USAGE

Fields inherited from class org.apache.hadoop.fs.shell.Command

args, err, exceptions, exitCode, name, numErrors, out, recursive

Constructor Summary

Constructors

Constructor and Description
Count() Constructor
Count(String[] cmd, int pos, Configuration conf) Deprecated. invoke via FsShell

Method Summary

Methods

Modifier and Type	Method and Description
protected void	processOptions(LinkedList<String> args) Must be implemented by commands to process the command line flags and check the bounds of the remaining arguments.
protected void	processPath(PathData src) Hook for commands to implement an operation to be applied on each path for the command.
static void	registerCommands(CommandFactory factory) Register the names for the count command

Methods inherited from class org.apache.hadoop.fs.shell.FsCommand

getCommandName, run, runAll

Methods inherited from class org.apache.hadoop.fs.shell.Command

displayError, displayError, displayWarning, exitCodeForError, expandArgument, expandArguments, getDepth, getDescription, getName, getReplacementCommand, getUsage, isDeprecated, isRecursive, postProcessPath, processArgument, processArguments, processNonexistentPath, processPathArgument, processPaths, processRawArguments, recursePath, run, setName, setRecursive

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

USAGE

public static final String USAGE

See Also:

Constant Field Values

DESCRIPTION

public static final String DESCRIPTION

See Also:

Constant Field Values

Constructor Detail

Count

public Count()

Constructor

Count

@Deprecated
public Count(String[] cmd,
                int pos,
                Configuration conf)

Deprecated. invoke via FsShell

Constructor

Parameters:

cmd - the count command

pos - the starting index of the arguments

conf - configuration

Method Detail

registerCommands

public static void registerCommands(CommandFactory factory)

Register the names for the count command

Parameters:

factory - the command factory that will instantiate this class

processOptions

protected void processOptions(LinkedList<String> args)

Description copied from class: Command

Must be implemented by commands to process the command line flags and check the bounds of the remaining arguments. If an IllegalArgumentException is thrown, the FsShell object will print the short usage of the command.

Overrides:

processOptions in class Command

Parameters:

args - the command line arguments

processPath

protected void processPath(PathData src)
                    throws IOException

Description copied from class: Command

Hook for commands to implement an operation to be applied on each path for the command. Note implementation of this method is optional if earlier methods in the chain handle the operation.

Overrides:

processPath in class Command

Parameters:

src - a PathData object

Throws:

IOException - if anything else goes wrong in the user-implementation