org.apache.hadoop.mapreduce.lib.db
Class DBOutputFormat.DBRecordWriter

java.lang.Object
  org.apache.hadoop.mapreduce.RecordWriter<K,V>
      org.apache.hadoop.mapreduce.lib.db.DBOutputFormat.DBRecordWriter

Enclosing class:

DBOutputFormat<K extends DBWritable,V>

@InterfaceStability.Evolving
public class DBOutputFormat.DBRecordWriter
extends RecordWriter<K,V>

A RecordWriter that writes the reduce output to a SQL table

Constructor Summary

DBOutputFormat.DBRecordWriter()

DBOutputFormat.DBRecordWriter(Connection connection, PreparedStatement statement)

Method Summary

void	close(TaskAttemptContext context) Close this RecordWriter to future operations.
Connection	getConnection()
PreparedStatement	getStatement()
void	write(K key, V value) Writes a key/value pair.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DBOutputFormat.DBRecordWriter

public DBOutputFormat.DBRecordWriter()
                              throws SQLException

Throws:

SQLException

DBOutputFormat.DBRecordWriter

public DBOutputFormat.DBRecordWriter(Connection connection,
                                     PreparedStatement statement)
                              throws SQLException

Throws:

SQLException

Method Detail

getConnection

public Connection getConnection()

getStatement

public PreparedStatement getStatement()

close

public void close(TaskAttemptContext context)
           throws IOException

Close this RecordWriter to future operations.

Specified by:

close in class RecordWriter<K extends DBWritable,V>

Parameters:

context - the context of the task

Throws:

IOException

write

public void write(K key,
                  V value)
           throws IOException

Writes a key/value pair.

Specified by:

write in class RecordWriter<K extends DBWritable,V>

Parameters:

key - the key to write.

value - the value to write.

Throws:

IOException