CompressedWriteBlock (Apache SystemDS 3.3.0 API)

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

All Methods Instance Methods Concrete Methods
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 Detail
  - mb
```
public MatrixBlock mb
```
- Constructor Detail
  - 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 Detail
  - 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>