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

java.lang.Object
  extended by org.apache.hadoop.mapreduce.OutputFormat<K,V>
      extended by org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>
          extended by org.apache.hadoop.mapreduce.lib.output.SequenceFileOutputFormat<K,V>
Direct Known Subclasses:
SequenceFileAsBinaryOutputFormat

public class SequenceFileOutputFormat<K,V>
extends FileOutputFormat<K,V>

An OutputFormat that writes SequenceFiles.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat
FileOutputFormat.Counter
 
Field Summary
 
Fields inherited from class org.apache.hadoop.mapreduce.lib.output.FileOutputFormat
BASE_OUTPUT_NAME, PART
 
Constructor Summary
SequenceFileOutputFormat()
           
 
Method Summary
static SequenceFile.CompressionType getOutputCompressionType(JobContext job)
          Get the SequenceFile.CompressionType for the output SequenceFile.
 RecordWriter<K,V> getRecordWriter(TaskAttemptContext context)
          Get the RecordWriter for the given task.
static void setOutputCompressionType(Job job, SequenceFile.CompressionType style)
          Set the SequenceFile.CompressionType for the output SequenceFile.
 
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

SequenceFileOutputFormat

public SequenceFileOutputFormat()
Method Detail

getRecordWriter

public RecordWriter<K,V> getRecordWriter(TaskAttemptContext context)
                                  throws IOException,
                                         InterruptedException
Description copied from class: OutputFormat
Get the RecordWriter for the given task.

Specified by:
getRecordWriter in class FileOutputFormat<K,V>
Parameters:
context - the information about the current task.
Returns:
a RecordWriter to write the output for the job.
Throws:
IOException
InterruptedException

getOutputCompressionType

public static SequenceFile.CompressionType getOutputCompressionType(JobContext job)
Get the SequenceFile.CompressionType for the output SequenceFile.

Parameters:
job - the Job
Returns:
the SequenceFile.CompressionType for the output SequenceFile, defaulting to SequenceFile.CompressionType.RECORD

setOutputCompressionType

public static void setOutputCompressionType(Job job,
                                            SequenceFile.CompressionType style)
Set the SequenceFile.CompressionType for the output SequenceFile.

Parameters:
job - the Job to modify
style - the SequenceFile.CompressionType for the output SequenceFile


Copyright © 2009 The Apache Software Foundation