Package org.apache.hadoop.fs.shell

Class Concat

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.Concat

All Implemented Interfaces:

Configurable

@Private
@Unstable
public class Concat
extends FsCommand

Concat the given files.

Field Summary

Fields

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

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

args, COMMAND_DESCRIPTION_FIELD, COMMAND_NAME_FIELD, COMMAND_USAGE_FIELD, err, exceptions, exitCode, name, numErrors, out, recursive

Constructor Summary

Constructors

Constructor	Description
Concat()

Method Summary

Modifier and Type	Method	Description
protected void	processArguments(LinkedList<PathData> args)	Processes the command's list of expanded arguments.
static void	registerCommands(CommandFactory factory)

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

getCommandName, processRawArguments, run, runAll

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

displayError, displayError, displayWarning, exitCodeForError, expandArgument, expandArguments, getCommandFactory, getDepth, getDescription, getListingGroupSize, getName, getReplacementCommand, getUsage, isDeprecated, isPathRecursable, isRecursive, isSorted, postProcessPath, processArgument, processNonexistentPath, processOptions, processPath, processPathArgument, processPaths, processPaths, recursePath, run, run, setCommandFactory, 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 Details

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 Details

Concat

public Concat()

Method Details

registerCommands

public static void registerCommands(CommandFactory factory)

processArguments

protected void processArguments(LinkedList<PathData> args)
                         throws IOException

Description copied from class: Command

Processes the command's list of expanded arguments. Command.processArgument(PathData) will be invoked with each item in the list. The loop catches IOExceptions, increments the error count, and displays the exception.

Overrides:

processArguments in class Command

Parameters:

args - a list of PathData to process

Throws:

IOException - if anything goes wrong...