Package org.apache.sysds.runtime.compress.io

Class CompressedWriteBlock

java.lang.Object

org.apache.sysds.runtime.compress.io.CompressedWriteBlock

All Implemented Interfaces:

Serializable, Comparable<CompressedWriteBlock>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<CompressedWriteBlock>

public class CompressedWriteBlock
extends Object
implements org.apache.hadoop.io.WritableComparable<CompressedWriteBlock>, Serializable

Write block for serializing either a instance of MatrixBlock or CompressedMatrixBlock, To allow spark to read in either or.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
MatrixBlock	mb

Constructor Summary

Constructors

Constructor	Description
CompressedWriteBlock()	Write block used to point to a underlying instance of CompressedMatrixBlock or MatrixBlock, Unfortunately spark require a specific object type to serialize therefore we use this class.
CompressedWriteBlock(MatrixBlock mb)

Method Summary

Modifier and Type	Method	Description
int	compareTo(CompressedWriteBlock arg0)
MatrixBlock	get()
void	readFields(DataInput in)
void	write(DataOutput out)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

mb

public MatrixBlock mb

Constructor Details

CompressedWriteBlock

public CompressedWriteBlock()

Write block used to point to a underlying instance of CompressedMatrixBlock or MatrixBlock, Unfortunately spark require a specific object type to serialize therefore we use this class.

CompressedWriteBlock

public CompressedWriteBlock(MatrixBlock mb)

Method Details

write

public void write(DataOutput out)
           throws IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

get

public MatrixBlock get()

compareTo

public int compareTo(CompressedWriteBlock arg0)

Specified by:

compareTo in interface Comparable<CompressedWriteBlock>