alluxio.client

Enum UnderStorageType

java.lang.Object

java.lang.Enum<UnderStorageType>

alluxio.client.UnderStorageType

All Implemented Interfaces:

Serializable, Comparable<UnderStorageType>

@ThreadSafe
public enum UnderStorageType
extends Enum<UnderStorageType>

Specifies the type of data interaction with Alluxio's Under Storage. This is not applicable for reads. Only writing temporary data is suggested to use type NO_PERSIST where writing to Under Storage will be skipped and data may be lost when evicted from Alluxio storage.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ASYNC_PERSIST Persist data to the under storage asynchronously.
NO_PERSIST Do not persist data to the under storage.
SYNC_PERSIST Persist data to the under storage synchronously.

Method Summary

Modifier and Type	Method and Description
boolean	isAsyncPersist()
boolean	isSyncPersist()
static UnderStorageType	valueOf(String name) Returns the enum constant of this type with the specified name.
static UnderStorageType[]	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

SYNC_PERSIST

public static final UnderStorageType SYNC_PERSIST

Persist data to the under storage synchronously.

NO_PERSIST

public static final UnderStorageType NO_PERSIST

Do not persist data to the under storage.

ASYNC_PERSIST

public static final UnderStorageType ASYNC_PERSIST

Persist data to the under storage asynchronously.

Method Detail

values

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

Returns:

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

valueOf

public static UnderStorageType 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

isSyncPersist

public boolean isSyncPersist()

Returns:

whether the data should be persisted to the under storage synchronously

isAsyncPersist

public boolean isAsyncPersist()

Returns:

whether the data should be persisted to the under storage asynchronously