org.apache.hadoop.mapreduce.lib.output
Class SequenceFileOutputFormat<K,V>
java.lang.Object
org.apache.hadoop.mapreduce.OutputFormat<K,V>
org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>
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.
| 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 |
SequenceFileOutputFormat
public SequenceFileOutputFormat()
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 modifystyle - the SequenceFile.CompressionType for the output
SequenceFile
Copyright © 2009 The Apache Software Foundation