Package org.apache.hadoop.fs

Class CompositeCrcFileChecksum

java.lang.Object

org.apache.hadoop.fs.FileChecksum

org.apache.hadoop.fs.CompositeCrcFileChecksum

All Implemented Interfaces:

Writable

@LimitedPrivate("HDFS")
@Unstable
public class CompositeCrcFileChecksum
extends FileChecksum

Composite CRC.

Field Summary

Fields

Modifier and Type	Field	Description
static int	LENGTH

Constructor Summary

Constructors

Constructor	Description
CompositeCrcFileChecksum(int crc, DataChecksum.Type crcType, int bytesPerCrc)	Create a CompositeCrcFileChecksum.

Method Summary

Modifier and Type	Method	Description
java.lang.String	getAlgorithmName()	The checksum algorithm name.
byte[]	getBytes()	The value of the checksum in bytes.
Options.ChecksumOpt	getChecksumOpt()
int	getLength()	The length of the checksum in bytes.
void	readFields(java.io.DataInput in)	Deserialize the fields of this object from in.
java.lang.String	toString()
void	write(java.io.DataOutput out)	Serialize the fields of this object to out.

Methods inherited from class org.apache.hadoop.fs.FileChecksum

equals, hashCode

Methods inherited from class java.lang.Object

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

Field Detail

LENGTH

public static final int LENGTH

See Also:

Constant Field Values

Constructor Detail

CompositeCrcFileChecksum

public CompositeCrcFileChecksum(int crc,
                                DataChecksum.Type crcType,
                                int bytesPerCrc)

Create a CompositeCrcFileChecksum.

Parameters:

crc - crc.

crcType - crcType.

bytesPerCrc - bytesPerCrc.

Method Detail

getAlgorithmName

public java.lang.String getAlgorithmName()

Description copied from class: FileChecksum

The checksum algorithm name.

Specified by:

getAlgorithmName in class FileChecksum

Returns:

algorithm name.

getLength

public int getLength()

Description copied from class: FileChecksum

The length of the checksum in bytes.

Specified by:

getLength in class FileChecksum

Returns:

length.

getBytes

public byte[] getBytes()

Description copied from class: FileChecksum

The value of the checksum in bytes.

Specified by:

getBytes in class FileChecksum

Returns:

byte array.

getChecksumOpt

public Options.ChecksumOpt getChecksumOpt()

Overrides:

getChecksumOpt in class FileChecksum

readFields

public void readFields(java.io.DataInput in)
                throws java.io.IOException

Description copied from interface: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Parameters:

in - DataInput to deseriablize this object from.

Throws:

java.io.IOException - any other problem for readFields.

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Description copied from interface: Writable

Serialize the fields of this object to out.

Parameters:

out - DataOuput to serialize this object into.

Throws:

java.io.IOException - any other problem for write.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object