org.apache.hadoop.vertica
Class VerticaStreamingOutput

java.lang.Object
  extended by org.apache.hadoop.mapreduce.OutputFormat<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
      extended by org.apache.hadoop.vertica.VerticaStreamingOutput

public class VerticaStreamingOutput
extends OutputFormat<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>


Constructor Summary
VerticaStreamingOutput()
           
 
Method Summary
 void checkOutputSpecs(JobContext context)
          Check for validity of the output-specification for the job.
 OutputCommitter getOutputCommitter(TaskAttemptContext context)
          Get the output committer for this output format.
 RecordWriter<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> getRecordWriter(TaskAttemptContext context)
          Get the RecordWriter for the given task.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

VerticaStreamingOutput

public VerticaStreamingOutput()
Method Detail

checkOutputSpecs

public void checkOutputSpecs(JobContext context)
                      throws IOException
Description copied from class: OutputFormat
Check for validity of the output-specification for the job.

This is to validate the output specification for the job when it is a job is submitted. Typically checks that it does not already exist, throwing an exception when it already exists, so that output is not overwritten.

Specified by:
checkOutputSpecs in class OutputFormat<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
Parameters:
context - information about the job
Throws:
IOException - when output should not be attempted

getRecordWriter

public RecordWriter<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> getRecordWriter(TaskAttemptContext context)
                                                                                  throws IOException
Description copied from class: OutputFormat
Get the RecordWriter for the given task.

Specified by:
getRecordWriter in class OutputFormat<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
Parameters:
context - the information about the current task.
Returns:
a RecordWriter to write the output for the job.
Throws:
IOException

getOutputCommitter

public OutputCommitter getOutputCommitter(TaskAttemptContext context)
                                   throws IOException,
                                          InterruptedException
Description copied from class: OutputFormat
Get the output committer for this output format. This is responsible for ensuring the output is committed correctly.

Specified by:
getOutputCommitter in class OutputFormat<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
Parameters:
context - the task context
Returns:
an output committer
Throws:
IOException
InterruptedException


Copyright © 2009 The Apache Software Foundation