org.apache.hadoop.hdfs.client

Enum HdfsDataOutputStream.SyncFlag

java.lang.Object

java.lang.Enum<HdfsDataOutputStream.SyncFlag>

org.apache.hadoop.hdfs.client.HdfsDataOutputStream.SyncFlag

All Implemented Interfaces:

Serializable, Comparable<HdfsDataOutputStream.SyncFlag>

Enclosing class:

HdfsDataOutputStream

public static enum HdfsDataOutputStream.SyncFlag
extends Enum<HdfsDataOutputStream.SyncFlag>

Enum Constant Summary

Enum Constants

Enum Constant and Description
END_BLOCK Sync the data to DataNode, close the current block, and allocate a new block
UPDATE_LENGTH When doing sync to DataNodes, also update the metadata (block length) in the NameNode.

Method Summary

Methods

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

UPDATE_LENGTH

public static final HdfsDataOutputStream.SyncFlag UPDATE_LENGTH

When doing sync to DataNodes, also update the metadata (block length) in the NameNode.

END_BLOCK

public static final HdfsDataOutputStream.SyncFlag END_BLOCK

Sync the data to DataNode, close the current block, and allocate a new block

Method Detail

values

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

Returns:

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

valueOf

public static HdfsDataOutputStream.SyncFlag 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