org.apache.tez.runtime.common.objectregistry
Enum ObjectLifeCycle

java.lang.Object
  java.lang.Enum<ObjectLifeCycle>
      org.apache.tez.runtime.common.objectregistry.ObjectLifeCycle

All Implemented Interfaces:

Serializable, Comparable<ObjectLifeCycle>

public enum ObjectLifeCycle
extends Enum<ObjectLifeCycle>

Defines the valid lifecycle and scope of Objects stored in ObjectRegistry. Objects are guaranteed to not be valid outside of their defined life-cycle period. Objects are not guaranteed to be retained through the defined period as they may be evicted for various reasons.

Enum Constant Summary

DAG
Objects are valid for the lifetime of the DAG.

SESSION
Objects are valid for the lifetime of the Tez JVM/Session

VERTEX
Objects are valid for the lifetime of the Vertex.

Method Summary

static ObjectLifeCycle	valueOf(String name) Returns the enum constant of this type with the specified name.
static ObjectLifeCycle[]	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

SESSION

public static final ObjectLifeCycle SESSION

Objects are valid for the lifetime of the Tez JVM/Session

DAG

public static final ObjectLifeCycle DAG

Objects are valid for the lifetime of the DAG.

VERTEX

public static final ObjectLifeCycle VERTEX

Objects are valid for the lifetime of the Vertex.

Method Detail

values

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

Returns:

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

valueOf

public static ObjectLifeCycle 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