org.apache.hadoop.mapred

Interface RecordWriter<K,V> [ source ]

All Known Implementing Classes:

DBOutputFormat.DBRecordWriter, TeraOutputFormat.TeraRecordWriter, TestMiniMRLocalFS.MyOutputFormat.MyRecordWriter, TextOutputFormat.LineRecordWriter

public interface RecordWriter<K,V>

RecordWriter writes the output <key, value> pairs to an output file.

RecordWriter implementations write the job outputs to the FileSystem.

See Also:

OutputFormat

Method Summary

Methods

Modifier and Type	Method and Description
void	close(Reporter reporter) Close this RecordWriter to future operations.
void	write(K key, V value) Writes a key/value pair.

Method Detail

write

void write(K key,
         V value)
           throws IOException

Writes a key/value pair.

Parameters:

key - the key to write.

value - the value to write.

Throws:

IOException

close

void close(Reporter reporter)
           throws IOException

Close this RecordWriter to future operations.

Parameters:

reporter - facility to report progress.

Throws:

IOException