org.apache.hadoop.mapred
Class SpillRecord

java.lang.Object
  org.apache.hadoop.mapred.SpillRecord

@InterfaceAudience.LimitedPrivate(value="MapReduce")
@InterfaceStability.Unstable
public class SpillRecord
extends Object

Constructor Summary

SpillRecord(int numPartitions)

SpillRecord(org.apache.hadoop.fs.Path indexFileName, JobConf job)

SpillRecord(org.apache.hadoop.fs.Path indexFileName, JobConf job, Checksum crc, String expectedIndexOwner)

SpillRecord(org.apache.hadoop.fs.Path indexFileName, JobConf job, String expectedIndexOwner)

Method Summary

IndexRecord	getIndex(int partition) Get spill offsets for given partition.
void	putIndex(IndexRecord rec, int partition) Set spill offsets for given partition.
int	size() Return number of IndexRecord entries in this spill.
void	writeToFile(org.apache.hadoop.fs.Path loc, JobConf job) Write this spill record to the location provided.
void	writeToFile(org.apache.hadoop.fs.Path loc, JobConf job, Checksum crc)

Methods inherited from class java.lang.Object

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

Constructor Detail

SpillRecord

public SpillRecord(int numPartitions)

SpillRecord

public SpillRecord(org.apache.hadoop.fs.Path indexFileName,
                   JobConf job)
            throws IOException

Throws:

IOException

SpillRecord

public SpillRecord(org.apache.hadoop.fs.Path indexFileName,
                   JobConf job,
                   String expectedIndexOwner)
            throws IOException

Throws:

IOException

SpillRecord

public SpillRecord(org.apache.hadoop.fs.Path indexFileName,
                   JobConf job,
                   Checksum crc,
                   String expectedIndexOwner)
            throws IOException

Throws:

IOException

Method Detail

size

public int size()

Return number of IndexRecord entries in this spill.

getIndex

public IndexRecord getIndex(int partition)

Get spill offsets for given partition.

putIndex

public void putIndex(IndexRecord rec,
                     int partition)

Set spill offsets for given partition.

writeToFile

public void writeToFile(org.apache.hadoop.fs.Path loc,
                        JobConf job)
                 throws IOException

Write this spill record to the location provided.

Throws:

IOException

writeToFile

public void writeToFile(org.apache.hadoop.fs.Path loc,
                        JobConf job,
                        Checksum crc)
                 throws IOException

Throws:

IOException