com.asakusafw.runtime.stage.input

Class StageInputRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader

com.asakusafw.runtime.stage.input.StageInputRecordReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class StageInputRecordReader
extends org.apache.hadoop.mapreduce.RecordReader

An implementation of Hadoop RecordReader for handling multiple Map operations.

Since:

0.1.0

Version:

0.2.6

Constructor Summary

Constructors

Constructor and Description
StageInputRecordReader()

Method Summary

Modifier and Type	Method and Description
void	close()
Object	getCurrentKey()
Object	getCurrentValue()
float	getProgress()
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext taskContext)
boolean	nextKeyValue()

Methods inherited from class java.lang.Object

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

Constructor Detail

StageInputRecordReader

public StageInputRecordReader()

Method Detail

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.mapreduce.TaskAttemptContext taskContext)
                throws IOException,
                       InterruptedException

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader

Throws:

IOException

InterruptedException

nextKeyValue

public boolean nextKeyValue()
                     throws IOException,
                            InterruptedException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader

Throws:

IOException

InterruptedException

getCurrentKey

public Object getCurrentKey()
                     throws IOException,
                            InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader

Throws:

IOException

InterruptedException

getCurrentValue

public Object getCurrentValue()
                       throws IOException,
                              InterruptedException

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader

Throws:

IOException

InterruptedException

getProgress

public float getProgress()
                  throws IOException,
                         InterruptedException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader

Throws:

IOException

InterruptedException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class org.apache.hadoop.mapreduce.RecordReader

Throws:

IOException