org.apache.flink.api.java.io

Class RemoteCollectorOutputFormat<T>

java.lang.Object

org.apache.flink.api.java.io.RemoteCollectorOutputFormat<T>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.io.OutputFormat<T>

public class RemoteCollectorOutputFormat<T>
extends Object
implements org.apache.flink.api.common.io.OutputFormat<T>

An output format that sends results through JAVA RMI to an RemoteCollector implementation. The client has to provide an implementation of RemoteCollector and has to write it's plan's output into an instance of RemoteCollectorOutputFormat. Further in the client's VM parameters -Djava.rmi.server.hostname should be set to the own IP address.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	PORT Config parameter for the remote's port number
static String	REMOTE Config parameter for the remote's address
static String	RMI_ID An id used necessary for Java RMI

Constructor Summary

Constructors

Constructor and Description
RemoteCollectorOutputFormat() Create a new RemoteCollectorOutputFormat instance.
RemoteCollectorOutputFormat(String remote, int port, String rmiId) Creates a new RemoteCollectorOutputFormat instance for the specified remote and port.

Method Summary

Modifier and Type	Method and Description
void	close() This method unbinds the reference of the implementation of RemoteCollector.
void	configure(org.apache.flink.configuration.Configuration parameters)
void	open(int taskNumber, int numTasks)
String	toString()
void	writeRecord(T record) This method forwards records simply to the remote's RemoteCollector implementation

Methods inherited from class java.lang.Object

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

Field Detail

PORT

public static final String PORT

Config parameter for the remote's port number

See Also:

Constant Field Values

REMOTE

public static final String REMOTE

Config parameter for the remote's address

See Also:

Constant Field Values

RMI_ID

public static final String RMI_ID

An id used necessary for Java RMI

See Also:

Constant Field Values

Constructor Detail

RemoteCollectorOutputFormat

public RemoteCollectorOutputFormat()

Create a new RemoteCollectorOutputFormat instance. The remote and port for this output are by default localhost:8888 but can be configured via a Configuration object.

See Also:

REMOTE, PORT

RemoteCollectorOutputFormat

public RemoteCollectorOutputFormat(String remote,
                                   int port,
                                   String rmiId)

Creates a new RemoteCollectorOutputFormat instance for the specified remote and port.

Parameters:

rmiId -

Method Detail

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

Specified by:

configure in interface org.apache.flink.api.common.io.OutputFormat<T>

open

public void open(int taskNumber,
                 int numTasks)
          throws IOException

Specified by:

open in interface org.apache.flink.api.common.io.OutputFormat<T>

Throws:

IOException

writeRecord

public void writeRecord(T record)
                 throws IOException

This method forwards records simply to the remote's RemoteCollector implementation

Specified by:

writeRecord in interface org.apache.flink.api.common.io.OutputFormat<T>

Throws:

IOException

close

public void close()
           throws IOException

This method unbinds the reference of the implementation of RemoteCollector.

Specified by:

close in interface org.apache.flink.api.common.io.OutputFormat<T>

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object