Package org.apache.orc.mapred

Class OrcKey

java.lang.Object

org.apache.orc.mapred.OrcKey

All Implemented Interfaces:

Comparable<OrcKey>, Writable, WritableComparable<OrcKey>, JobConfigurable

public final class OrcKey
extends Object
implements WritableComparable<OrcKey>, JobConfigurable

This type provides a wrapper for OrcStruct so that it can be sent through the MapReduce shuffle as a key.

The user should set the JobConf with orc.mapred.key.type with the type string of the type.

Field Summary

Fields

Modifier and Type	Field	Description
WritableComparable	key

Constructor Summary

Constructors

Constructor	Description
OrcKey()
OrcKey(WritableComparable key)

Method Summary

Modifier and Type	Method	Description
int	compareTo(OrcKey o)
void	configure(JobConf conf)
boolean	equals(Object o)
int	hashCode()
void	readFields(DataInput dataInput)
void	write(DataOutput dataOutput)

Methods inherited from class java.lang.Object

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

Field Details

key

public WritableComparable key

Constructor Details

OrcKey

public OrcKey(WritableComparable key)

OrcKey

public OrcKey()

Method Details

write

public void write(DataOutput dataOutput)
           throws IOException

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput dataInput)
                throws IOException

Specified by:

readFields in interface Writable

Throws:

IOException

configure

public void configure(JobConf conf)

Specified by:

configure in interface JobConfigurable

compareTo

public int compareTo(OrcKey o)

Specified by:

compareTo in interface Comparable<OrcKey>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object