Durability (Apache HBase 1.4.11 API)

java.lang.Object
- java.lang.Enum<Durability>
- - org.apache.hadoop.hbase.client.Durability

All Implemented Interfaces:

Serializable, Comparable<Durability>
```
@InterfaceAudience.Public
@InterfaceStability.Evolving
public enum Durability
extends Enum<Durability>
```
Enum describing the durability guarantees for tables and Mutations Note that the items must be sorted in order of increasing durability

Enum Constant Summary

Enum Constants
Enum Constant and Description
`ASYNC_WAL` Write the Mutation to the WAL asynchronously
`FSYNC_WAL` Write the Mutation to the WAL synchronously and force the entries to disk.
`SKIP_WAL` Do not write the Mutation to the WAL
`SYNC_WAL` Write the Mutation to the WAL synchronously.
`USE_DEFAULT` If this is for tables durability, use HBase's global default value (SYNC_WAL).

Method Summary

Methods
Modifier and Type	Method and Description
`static Durability`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static Durability[]`	`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
  - USE_DEFAULT
```
public static final Durability USE_DEFAULT
```
    If this is for tables durability, use HBase's global default value (SYNC_WAL). Otherwise, if this is for mutation, use the table's default setting to determine durability. This must remain the first option.
  - SKIP_WAL
```
public static final Durability SKIP_WAL
```
    Do not write the Mutation to the WAL
  - ASYNC_WAL
```
public static final Durability ASYNC_WAL
```
    Write the Mutation to the WAL asynchronously
  - SYNC_WAL
```
public static final Durability SYNC_WAL
```
    Write the Mutation to the WAL synchronously. The data is flushed to the filesystem implementation, but not necessarily to disk. For HDFS this will flush the data to the designated number of DataNodes. See HADOOP-6313
  - FSYNC_WAL
```
public static final Durability FSYNC_WAL
```
    Write the Mutation to the WAL synchronously and force the entries to disk. (Note: this is currently not supported and will behave identical to SYNC_WAL) See HADOOP-6313
- Method Detail
  - values
```
public static Durability[] 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 (Durability c : Durability.values())
    System.out.println(c);
```
    Returns:
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static Durability 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

Enum Durability

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

USE_DEFAULT

SKIP_WAL

ASYNC_WAL

SYNC_WAL

FSYNC_WAL

Method Detail

values

valueOf