pegasus.mapreduce.common.io

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

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.IntWritable,V>

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

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class VectorRecordReader<V extends org.apache.hadoop.io.Writable>
extends org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.IntWritable,V>

Constructor Summary

Constructors

Constructor and Description
VectorRecordReader(java.io.InputStream in, org.apache.hadoop.mapreduce.TaskAttemptContext context, java.lang.Class<V> valueClass)

Method Summary

Modifier and Type	Method and Description
void	close()
org.apache.hadoop.io.IntWritable	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

VectorRecordReader

public VectorRecordReader(java.io.InputStream in,
                          org.apache.hadoop.mapreduce.TaskAttemptContext context,
                          java.lang.Class<V> valueClass)
                   throws java.io.IOException

Throws:

java.io.IOException

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<org.apache.hadoop.io.IntWritable,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<org.apache.hadoop.io.IntWritable,V extends org.apache.hadoop.io.Writable>

Throws:

java.io.IOException

java.lang.InterruptedException

getCurrentKey

public org.apache.hadoop.io.IntWritable getCurrentKey()
                                               throws java.io.IOException,
                                                      java.lang.InterruptedException

Specified by:

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

Throws:

java.io.IOException

java.lang.InterruptedException

getProgress

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

Specified by:

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

Throws:

java.io.IOException