org.apache.hadoop.mapred.lib
Class FilterOutputFormat<K,V>
java.lang.Object
org.apache.hadoop.mapred.lib.FilterOutputFormat<K,V>
- All Implemented Interfaces:
- OutputFormat<K,V>
- Direct Known Subclasses:
- LazyOutputFormat
@InterfaceAudience.Public
@InterfaceStability.Stable
public class FilterOutputFormat<K,V>
- extends Object
- implements OutputFormat<K,V>
FilterOutputFormat is a convenience class that wraps OutputFormat.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
baseOut
protected OutputFormat<K,V> baseOut
FilterOutputFormat
public FilterOutputFormat()
FilterOutputFormat
public FilterOutputFormat(OutputFormat<K,V> out)
- Create a FilterOutputFormat based on the supplied output format.
- Parameters:
out
- the underlying OutputFormat
getRecordWriter
public RecordWriter<K,V> getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress)
throws IOException
- Description copied from interface:
OutputFormat
- Get the
RecordWriter
for the given job.
- Specified by:
getRecordWriter
in interface OutputFormat<K,V>
job
- configuration for the job whose output is being written.name
- the unique name for this part of the output.progress
- mechanism for reporting progress while writing to file.
- Returns:
- a
RecordWriter
to write the output for the job.
- Throws:
IOException
checkOutputSpecs
public void checkOutputSpecs(FileSystem ignored,
JobConf job)
throws IOException
- Description copied from interface:
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 interface OutputFormat<K,V>
job
- job configuration.
- Throws:
IOException
- when output should not be attempted
Copyright © 2014 Apache Software Foundation. All Rights Reserved.