org.apache.pig.impl.util.avro

Class AvroRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

org.apache.pig.impl.util.avro.AvroRecordReader

All Implemented Interfaces:

Closeable, AutoCloseable

public final class AvroRecordReader
extends org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

RecordReader for Avro files

Constructor Summary

Constructors

Constructor and Description
AvroRecordReader(org.apache.avro.Schema s) Creates new instance of AvroRecordReader.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
org.apache.hadoop.io.NullWritable	getCurrentKey()
org.apache.avro.generic.GenericData.Record	getCurrentValue() Returns current value.
float	getProgress()
void	initialize(org.apache.hadoop.mapreduce.InputSplit isplit, org.apache.hadoop.mapreduce.TaskAttemptContext tc)
boolean	nextKeyValue()

Methods inherited from class java.lang.Object

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

Constructor Detail

AvroRecordReader

public AvroRecordReader(org.apache.avro.Schema s)

Creates new instance of AvroRecordReader.

Parameters:

s - The input schema.

Method Detail

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<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

Throws:

IOException

getCurrentValue

public org.apache.avro.generic.GenericData.Record getCurrentValue()
                                                           throws IOException,
                                                                  InterruptedException

Returns current value.

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

Returns:

the current value

Throws:

IOException - when an IO error occurs

InterruptedException - when interrupted

getCurrentKey

public org.apache.hadoop.io.NullWritable getCurrentKey()
                                                throws IOException,
                                                       InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

Throws:

IOException

InterruptedException

getProgress

public float getProgress()
                  throws IOException,
                         InterruptedException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

Throws:

IOException

InterruptedException

initialize

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

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

Throws:

IOException

InterruptedException

nextKeyValue

public boolean nextKeyValue()
                     throws IOException,
                            InterruptedException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.avro.generic.GenericData.Record>

Throws:

IOException

InterruptedException