Package org.apache.hadoop.fs

Class FileChecksum

java.lang.Object

org.apache.hadoop.fs.FileChecksum

All Implemented Interfaces:

Writable

Direct Known Subclasses:

CompositeCrcFileChecksum, EtagChecksum, MD5MD5CRC32FileChecksum

@Public
@Stable
public abstract class FileChecksum
extends java.lang.Object
implements Writable

An abstract class representing file checksums for files.

Constructor Summary

Constructors

Constructor	Description
FileChecksum()

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object other)	Return true if both the algorithms and the values are the same.
abstract java.lang.String	getAlgorithmName()	The checksum algorithm name.
abstract byte[]	getBytes()	The value of the checksum in bytes.
Options.ChecksumOpt	getChecksumOpt()
abstract int	getLength()	The length of the checksum in bytes.
int	hashCode()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.hadoop.io.Writable

readFields, write

Constructor Detail

FileChecksum

public FileChecksum()

Method Detail

getAlgorithmName

public abstract java.lang.String getAlgorithmName()

The checksum algorithm name.

Returns:

algorithm name.

getLength

public abstract int getLength()

The length of the checksum in bytes.

Returns:

length.

getBytes

public abstract byte[] getBytes()

The value of the checksum in bytes.

Returns:

byte array.

getChecksumOpt

public Options.ChecksumOpt getChecksumOpt()

equals

public boolean equals(java.lang.Object other)

Return true if both the algorithms and the values are the same.

Overrides:

equals in class java.lang.Object

Parameters:

other - other.

Returns:

if equal true, not false.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object