org.apache.avro.mapreduce

Class AvroSequenceFileOutputFormat<K,V>

java.lang.Object

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

org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>

org.apache.avro.mapreduce.AvroSequenceFileOutputFormat<K,V>

Type Parameters:

K - The job output key type (may be a Writable, AvroKey).

V - The job output value type (may be a Writable, AvroValue).

public class AvroSequenceFileOutputFormat<K,V>
extends org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>

A sequence file output format that knows how to write AvroKeys and AvroValues in addition to Writables.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat

org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.Counter

Field Summary

Fields inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat

BASE_OUTPUT_NAME, COMPRESS, COMPRESS_CODEC, COMPRESS_TYPE, OUTDIR, PART

Constructor Summary

Constructors

Constructor and Description
AvroSequenceFileOutputFormat()

Method Summary

Modifier and Type	Method and Description
static org.apache.hadoop.io.SequenceFile.CompressionType	getOutputCompressionType(org.apache.hadoop.conf.Configuration conf) Gets type of compression for the output sequence file.
org.apache.hadoop.mapreduce.RecordWriter<K,V>	getRecordWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context)
static void	setOutputCompressionType(org.apache.hadoop.mapreduce.Job job, org.apache.hadoop.io.SequenceFile.CompressionType compressionType) Sets the type of compression for the output sequence file.

Methods inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat

checkOutputSpecs, getCompressOutput, getDefaultWorkFile, getOutputCommitter, getOutputCompressorClass, getOutputName, getOutputPath, getPathForWorkFile, getUniqueFile, getWorkOutputPath, setCompressOutput, setOutputCompressorClass, setOutputName, setOutputPath

Methods inherited from class java.lang.Object

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

Constructor Detail

AvroSequenceFileOutputFormat

public AvroSequenceFileOutputFormat()

Method Detail

getRecordWriter

public org.apache.hadoop.mapreduce.RecordWriter<K,V> getRecordWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                              throws IOException,
                                                                     InterruptedException

Specified by:

getRecordWriter in class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>

Throws:

IOException

InterruptedException

setOutputCompressionType

public static void setOutputCompressionType(org.apache.hadoop.mapreduce.Job job,
                                            org.apache.hadoop.io.SequenceFile.CompressionType compressionType)

Sets the type of compression for the output sequence file.

Parameters:

job - The job configuration.

compressionType - The compression type for the target sequence file.

getOutputCompressionType

public static org.apache.hadoop.io.SequenceFile.CompressionType getOutputCompressionType(org.apache.hadoop.conf.Configuration conf)

Gets type of compression for the output sequence file.

Parameters:

conf - The job configuration.

Returns:

The compression type.