Package org.apache.hadoop.fs

Class Options.ChecksumOpt

java.lang.Object

org.apache.hadoop.fs.Options.ChecksumOpt

Enclosing class:

Options

public static class Options.ChecksumOpt
extends Object

This is used in FileSystem and FileContext to specify checksum options.

Constructor Summary

Constructors

Constructor	Description
ChecksumOpt()	Create a uninitialized one
ChecksumOpt(DataChecksum.Type type, int size)	Normal ctor

Method Summary

Modifier and Type	Method	Description
static Options.ChecksumOpt	createDisabled()	Create a ChecksumOpts that disables checksum.
int	getBytesPerChecksum()
DataChecksum.Type	getChecksumType()
static Options.ChecksumOpt	processChecksumOpt(Options.ChecksumOpt defaultOpt, Options.ChecksumOpt userOpt)	A helper method for processing user input and default value to create a combined checksum option.
static Options.ChecksumOpt	processChecksumOpt(Options.ChecksumOpt defaultOpt, Options.ChecksumOpt userOpt, int userBytesPerChecksum)	A helper method for processing user input and default value to create a combined checksum option.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ChecksumOpt

public ChecksumOpt()

Create a uninitialized one

ChecksumOpt

public ChecksumOpt(DataChecksum.Type type,
 int size)

Normal ctor

Parameters:

type - checksum type

size - bytes per checksum

Method Details

getBytesPerChecksum

public int getBytesPerChecksum()

getChecksumType

public DataChecksum.Type getChecksumType()

toString

public String toString()

Overrides:

toString in class Object

createDisabled

public static Options.ChecksumOpt createDisabled()

Create a ChecksumOpts that disables checksum.

Returns:

ChecksumOpt.

processChecksumOpt

public static Options.ChecksumOpt processChecksumOpt(Options.ChecksumOpt defaultOpt,
 Options.ChecksumOpt userOpt,
 int userBytesPerChecksum)

A helper method for processing user input and default value to create a combined checksum option. This is a bit complicated because bytesPerChecksum is kept for backward compatibility.

Parameters:

defaultOpt - Default checksum option

userOpt - User-specified checksum option. Ignored if null.

userBytesPerChecksum - User-specified bytesPerChecksum Ignored if < 0.

Returns:

ChecksumOpt.

processChecksumOpt

public static Options.ChecksumOpt processChecksumOpt(Options.ChecksumOpt defaultOpt,
 Options.ChecksumOpt userOpt)

A helper method for processing user input and default value to create a combined checksum option.

Parameters:

defaultOpt - Default checksum option

userOpt - User-specified checksum option

Returns:

ChecksumOpt.