alluxio.master.table

Class Partition

java.lang.Object

alluxio.master.table.Partition

public class Partition
extends Object

The table partition class.

Constructor Summary

Constructors

Constructor and Description
Partition(String partitionSpec, Layout baseLayout) Creates an instance.
Partition(UdbPartition udbPartition) Creates an instance from a udb partition.

Method Summary

Modifier and Type	Method and Description
static Partition	fromProto(LayoutRegistry layoutRegistry, Partition proto)
Layout	getLayout()
String	getSpec()
TransformPlan	getTransformPlan(TransformContext transformContext, TransformDefinition definition) Returns a plan to transform this partition.
boolean	isTransformed(String definition)
Partition	toProto()
void	transform(String definition, Layout layout) Transform the partition.

Methods inherited from class java.lang.Object

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

Constructor Detail

Partition

public Partition(String partitionSpec,
                 Layout baseLayout)

Creates an instance.

Parameters:

partitionSpec - the partition spec

baseLayout - the partition layout

Partition

public Partition(UdbPartition udbPartition)

Creates an instance from a udb partition.

Parameters:

udbPartition - the udb partition

Method Detail

getLayout

public Layout getLayout()

Returns:

the current layout

transform

public void transform(String definition,
                      Layout layout)

Transform the partition.

Parameters:

definition - the transformation definition

layout - the transformed layout

isTransformed

public boolean isTransformed(String definition)

Parameters:

definition - the transformation definition

Returns:

whether the latest transformation of Partition has the same definition

getSpec

public String getSpec()

Returns:

the partition speck

getTransformPlan

public TransformPlan getTransformPlan(TransformContext transformContext,
                                      TransformDefinition definition)
                               throws IOException

Returns a plan to transform this partition.

Parameters:

transformContext - the TransformContext

definition - the transformation definition

Returns:

the transformation plan

Throws:

IOException

toProto

public Partition toProto()

Returns:

the proto representation

fromProto

public static Partition fromProto(LayoutRegistry layoutRegistry,
                                  Partition proto)

Parameters:

layoutRegistry - the layout registry

proto - the proto representation

Returns:

the java representation