alluxio.master.journal.checkpoint

Enum CheckpointType

java.lang.Object

java.lang.Enum<CheckpointType>

alluxio.master.journal.checkpoint.CheckpointType

All Implemented Interfaces:

Serializable, Comparable<CheckpointType>

public enum CheckpointType
extends Enum<CheckpointType>

Enumeration of different checkpoint types used by the master.

Enum Constant Summary

Enum Constants

Enum Constant and Description
COMPOUND This format uses kryo's chunked encoding to write multiple [checkpoint_name, checkpoint_bytes] entries to the output stream.
INODE_PROTOS This format sequentially writes delimited InodeMeta.Inode protocol buffers one after another using the protocol buffer writeDelimitedTo method.
JOURNAL_ENTRY This format sequentially writes delimited journal entries one after another using the protocol buffer writeDelimitedTo method.
LONG A checkpoint consisting of a single long value written by a data output stream.
LONGS A series of longs written by DataOutputStream.
ROCKS_PARALLEL A RocksDB backup in .zip format with multi threads.
ROCKS_SINGLE A RocksDB backup in .tar.gz format with single thread.

Method Summary

Modifier and Type	Method and Description
static CheckpointType	fromLong(long id)
CheckpointFormat	getCheckpointFormat()
long	getId()
static CheckpointType	valueOf(String name) Returns the enum constant of this type with the specified name.
static CheckpointType[]	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

JOURNAL_ENTRY

public static final CheckpointType JOURNAL_ENTRY

This format sequentially writes delimited journal entries one after another using the protocol buffer writeDelimitedTo method.

COMPOUND

public static final CheckpointType COMPOUND

This format uses kryo's chunked encoding to write multiple [checkpoint_name, checkpoint_bytes] entries to the output stream.

LONGS

public static final CheckpointType LONGS

A series of longs written by DataOutputStream.

ROCKS_SINGLE

public static final CheckpointType ROCKS_SINGLE

A RocksDB backup in .tar.gz format with single thread.

INODE_PROTOS

public static final CheckpointType INODE_PROTOS

This format sequentially writes delimited InodeMeta.Inode protocol buffers one after another using the protocol buffer writeDelimitedTo method.

LONG

public static final CheckpointType LONG

A checkpoint consisting of a single long value written by a data output stream.

ROCKS_PARALLEL

public static final CheckpointType ROCKS_PARALLEL

A RocksDB backup in .zip format with multi threads.

Method Detail

values

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

Returns:

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

valueOf

public static CheckpointType 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

getId

public long getId()

Returns:

the checkpoint type's id

getCheckpointFormat

public CheckpointFormat getCheckpointFormat()

Returns:

the checkpoint format

fromLong

public static CheckpointType fromLong(long id)

Parameters:

id - a checkpoint type id

Returns:

the corresponding checkpoint type