org.apache.beam.runners.samza

Enum SamzaExecutionEnvironment

java.lang.Object

java.lang.Enum<SamzaExecutionEnvironment>

org.apache.beam.runners.samza.SamzaExecutionEnvironment

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<SamzaExecutionEnvironment>

public enum SamzaExecutionEnvironment
extends java.lang.Enum<SamzaExecutionEnvironment>

Different Samza execution environments that defines how the Samza job will be deployed.

Enum Constant Summary

Enum Constants

Enum Constant and Description
LOCAL Runs the Samza job on the local machine with only one container.
STANDALONE Runs Samza job as a stand alone embedded library mode which can be imported into your Java application.
YARN Submits and runs the Samza job on YARN, a remote clustered resource manager.

Method Summary

Modifier and Type	Method and Description
static SamzaExecutionEnvironment	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static SamzaExecutionEnvironment[]	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

LOCAL

public static final SamzaExecutionEnvironment LOCAL

Runs the Samza job on the local machine with only one container. There is no coordination required since there is only one container deployed in a single JVM. This setting is generally used for development and testing.

YARN

public static final SamzaExecutionEnvironment YARN

Submits and runs the Samza job on YARN, a remote clustered resource manager. Samza works with the YARN to provision and coordinate resources for your application and run it across a cluster of machines. It also handles failures of individual instances and automatically restarts them.

STANDALONE

public static final SamzaExecutionEnvironment STANDALONE

Runs Samza job as a stand alone embedded library mode which can be imported into your Java application. You can increase your application's capacity by spinning up multiple instances. These instances will then dynamically coordinate with each other and distribute work among themselves. If an instance fails, the tasks running on it will be re-assigned to the remaining ones. By default, Samza uses Zookeeper for coordination across individual instances.

Method Detail

values

public static SamzaExecutionEnvironment[] 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 (SamzaExecutionEnvironment c : SamzaExecutionEnvironment.values())
    System.out.println(c);

Returns:

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

valueOf

public static SamzaExecutionEnvironment valueOf(java.lang.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:

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

java.lang.NullPointerException - if the argument is null