org.apache.flink.api.common

Enum RuntimeExecutionMode

java.lang.Object

java.lang.Enum<RuntimeExecutionMode>

org.apache.flink.api.common.RuntimeExecutionMode

All Implemented Interfaces:

Serializable, Comparable<RuntimeExecutionMode>

@PublicEvolving
public enum RuntimeExecutionMode
extends Enum<RuntimeExecutionMode>

Runtime execution mode of DataStream programs. Among other things, this controls task scheduling, network shuffle behavior, and time semantics. Some operations will also change their record emission behaviour based on the configured execution mode.

See Also:

https://cwiki.apache.org/confluence/display/FLINK/FLIP-134%3A+Batch+execution+for+the+DataStream+API

Enum Constant Summary

Enum Constants

Enum Constant and Description
AUTOMATIC Flink will set the execution mode to BATCH if all sources are bounded, or STREAMING if there is at least one source which is unbounded.
BATCH The Pipeline will be executed with Batch Semantics.
STREAMING The Pipeline will be executed with Streaming Semantics.

Method Summary

Modifier and Type	Method and Description
static RuntimeExecutionMode	valueOf(String name) Returns the enum constant of this type with the specified name.
static RuntimeExecutionMode[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

STREAMING

public static final RuntimeExecutionMode STREAMING

The Pipeline will be executed with Streaming Semantics. All tasks will be deployed before execution starts, checkpoints will be enabled, and both processing and event time will be fully supported.

BATCH

public static final RuntimeExecutionMode BATCH

The Pipeline will be executed with Batch Semantics. Tasks will be scheduled gradually based on the scheduling region they belong, shuffles between regions will be blocking, watermarks are assumed to be "perfect" i.e. no late data, and processing time is assumed to not advance during execution.

AUTOMATIC

public static final RuntimeExecutionMode AUTOMATIC

Flink will set the execution mode to BATCH if all sources are bounded, or STREAMING if there is at least one source which is unbounded.

Method Detail

values

public static RuntimeExecutionMode[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (RuntimeExecutionMode c : RuntimeExecutionMode.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static RuntimeExecutionMode valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null