org.apache.avro.mapreduce

Class AvroKeyRecordReader<T>

java.lang.Object

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

org.apache.avro.mapreduce.AvroRecordReaderBase<AvroKey<T>,org.apache.hadoop.io.NullWritable,T>

org.apache.avro.mapreduce.AvroKeyRecordReader<T>

Type Parameters:

T - The (java) type of data in Avro container file.

All Implemented Interfaces:

Closeable, AutoCloseable

public class AvroKeyRecordReader<T>
extends AvroRecordReaderBase<AvroKey<T>,org.apache.hadoop.io.NullWritable,T>

Reads records from an input split representing a chunk of an Avro container file.

Constructor Summary

Constructors

Constructor and Description
AvroKeyRecordReader(Schema readerSchema) Constructor.

Method Summary

Modifier and Type	Method and Description
AvroKey<T>	getCurrentKey()
org.apache.hadoop.io.NullWritable	getCurrentValue()
boolean	nextKeyValue()

Methods inherited from class org.apache.avro.mapreduce.AvroRecordReaderBase

close, createAvroFileReader, createSeekableInput, getCurrentRecord, getProgress, initialize

Methods inherited from class java.lang.Object

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

Constructor Detail

AvroKeyRecordReader

public AvroKeyRecordReader(Schema readerSchema)

Constructor.

Parameters:

readerSchema - The reader schema to use for the records in the Avro container file.

Method Detail

nextKeyValue

public boolean nextKeyValue()
                     throws IOException,
                            InterruptedException

Overrides:

nextKeyValue in class AvroRecordReaderBase<AvroKey<T>,org.apache.hadoop.io.NullWritable,T>

Throws:

IOException

InterruptedException

getCurrentKey

public AvroKey<T> getCurrentKey()
                         throws IOException,
                                InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<AvroKey<T>,org.apache.hadoop.io.NullWritable>

Throws:

IOException

InterruptedException

getCurrentValue

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

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<AvroKey<T>,org.apache.hadoop.io.NullWritable>

Throws:

IOException

InterruptedException