pegasus.mapreduce.common.io

Class MatrixRecordReader<V extends org.apache.hadoop.io.Writable>

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V>

pegasus.mapreduce.common.io.MatrixRecordReader<V>

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class MatrixRecordReader<V extends org.apache.hadoop.io.Writable>
extends org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V>

Constructor Summary

Constructors

Constructor and Description
MatrixRecordReader(java.lang.Class<V> valueClass, org.apache.hadoop.conf.Configuration conf)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixRecordReader

public MatrixRecordReader(java.lang.Class<V> valueClass,
                          org.apache.hadoop.conf.Configuration conf)

Method Detail

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.mapreduce.TaskAttemptContext context)
                throws java.io.IOException,
                       java.lang.InterruptedException

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

java.lang.InterruptedException

nextKeyValue

public boolean nextKeyValue()
                     throws java.io.IOException,
                            java.lang.InterruptedException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

java.lang.InterruptedException

getCurrentKey

public IntIntPairWritable getCurrentKey()
                                 throws java.io.IOException,
                                        java.lang.InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

java.lang.InterruptedException

getCurrentValue

public V getCurrentValue()
                  throws java.io.IOException,
                         java.lang.InterruptedException

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

java.lang.InterruptedException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

getProgress

public float getProgress()
                  throws java.io.IOException,
                         java.lang.InterruptedException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<IntIntPairWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

java.lang.InterruptedException