Package org.apache.flink.client.python

Class PythonGatewayServer

java.lang.Object

org.apache.flink.client.python.PythonGatewayServer

public class PythonGatewayServer
extends Object

The Py4j Gateway Server provides RPC service for user's python process.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	PythonGatewayServer.Watchdog	A simple watch dog interface.

Field Summary

Fields

Modifier and Type	Field	Description
static PythonGatewayServer.Watchdog	watchdog	This watchdog object is provided to Python side to check whether its parent process is alive.

Constructor Summary

Constructors

Constructor	Description
PythonGatewayServer()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Main method to start a local GatewayServer on a ephemeral port.

Methods inherited from class java.lang.Object

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

Field Details

watchdog

public static PythonGatewayServer.Watchdog watchdog

This watchdog object is provided to Python side to check whether its parent process is alive.

Constructor Details

PythonGatewayServer

public PythonGatewayServer()

Method Details

main

public static void main(String[] args)
                 throws IOException,
ExecutionException,
InterruptedException

Main method to start a local GatewayServer on a ephemeral port. It tells python side via a file.

See: py4j.GatewayServer.main()

Throws:

IOException

ExecutionException

InterruptedException