org.apache.avro.mapreduce

Class AvroOutputFormatBase<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.AvroOutputFormatBase<K,V>

Type Parameters:

K - The type of key to write.

V - The type of value to write.

Direct Known Subclasses:

AvroKeyOutputFormat, AvroKeyValueOutputFormat

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

Abstract base class for output formats that write Avro container files.

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
AvroOutputFormatBase()

Method Summary

Modifier and Type	Method and Description
protected OutputStream	getAvroFileOutputStream(org.apache.hadoop.mapreduce.TaskAttemptContext context) Gets the target output stream where the Avro container file should be written.
protected static CodecFactory	getCompressionCodec(org.apache.hadoop.mapreduce.TaskAttemptContext context) Gets the configured compression codec from the task context.
protected static int	getSyncInterval(org.apache.hadoop.mapreduce.TaskAttemptContext context) Gets the configured sync interval from the task context.

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

checkOutputSpecs, getCompressOutput, getDefaultWorkFile, getOutputCommitter, getOutputCompressorClass, getOutputName, getOutputPath, getPathForWorkFile, getRecordWriter, 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

AvroOutputFormatBase

public AvroOutputFormatBase()

Method Detail

getCompressionCodec

protected static CodecFactory getCompressionCodec(org.apache.hadoop.mapreduce.TaskAttemptContext context)

Gets the configured compression codec from the task context.

Parameters:

context - The task attempt context.

Returns:

The compression codec to use for the output Avro container file.

getAvroFileOutputStream

protected OutputStream getAvroFileOutputStream(org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                        throws IOException

Gets the target output stream where the Avro container file should be written.

Parameters:

context - The task attempt context.

Returns:

The target output stream.

Throws:

IOException

getSyncInterval

protected static int getSyncInterval(org.apache.hadoop.mapreduce.TaskAttemptContext context)

Gets the configured sync interval from the task context.

Parameters:

context - The task attempt context.

Returns:

The sync interval to use for the output Avro container file.