org.apache.flink.api.java

Class LocalEnvironment

java.lang.Object

org.apache.flink.api.java.ExecutionEnvironment

org.apache.flink.api.java.LocalEnvironment

@Public
public class LocalEnvironment
extends ExecutionEnvironment

An ExecutionEnvironment that runs the program locally, multi-threaded, in the JVM where the environment is instantiated.

When this environment is instantiated, it uses a default parallelism of 1. The default parallelism can be set via ExecutionEnvironment.setParallelism(int).

Local environments can also be instantiated through ExecutionEnvironment.createLocalEnvironment() and ExecutionEnvironment.createLocalEnvironment(int). The former version will pick a default parallelism equal to the number of hardware contexts in the local machine.

Field Summary

Fields inherited from class org.apache.flink.api.java.ExecutionEnvironment

lastJobExecutionResult, LOG

Constructor Summary

Constructors

Constructor and Description
LocalEnvironment() Creates a new local environment.
LocalEnvironment(Configuration config) Creates a new local environment that configures its local executor with the given configuration.

Method Summary

Modifier and Type	Method and Description
String	toString()

Methods inherited from class org.apache.flink.api.java.ExecutionEnvironment

addDefaultKryoSerializer, addDefaultKryoSerializer, areExplicitEnvironmentsAllowed, clearJobListeners, configure, createCollectionsEnvironment, createInput, createInput, createLocalEnvironment, createLocalEnvironment, createLocalEnvironment, createLocalEnvironmentWithWebUI, createProgramPlan, createProgramPlan, createProgramPlan, createRemoteEnvironment, createRemoteEnvironment, createRemoteEnvironment, execute, execute, executeAsync, executeAsync, fromCollection, fromCollection, fromCollection, fromCollection, fromElements, fromElements, fromParallelCollection, fromParallelCollection, generateSequence, getConfig, getConfiguration, getDefaultLocalParallelism, getExecutionEnvironment, getExecutionPlan, getExecutorServiceLoader, getJobListeners, getLastJobExecutionResult, getNumberOfExecutionRetries, getParallelism, getRestartStrategy, getUserCodeClassLoader, initializeContextEnvironment, readCsvFile, readFile, readFileOfPrimitives, readFileOfPrimitives, readTextFile, readTextFile, readTextFileWithValue, readTextFileWithValue, registerCachedFile, registerCachedFile, registerJobListener, registerType, registerTypeWithKryoSerializer, registerTypeWithKryoSerializer, resetContextEnvironment, setDefaultLocalParallelism, setNumberOfExecutionRetries, setParallelism, setRestartStrategy

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalEnvironment

public LocalEnvironment()

Creates a new local environment.

LocalEnvironment

public LocalEnvironment(Configuration config)

Creates a new local environment that configures its local executor with the given configuration.

Parameters:

config - The configuration used to configure the local executor.

Method Detail

toString

public String toString()

Overrides:

toString in class Object