TachyonConf (Tachyon Common 0.8.2 API)

java.lang.Object
- tachyon.conf.TachyonConf

```
public final class TachyonConf
extends Object
```
All the runtime configuration properties of Tachyon. This class works like a dictionary and serves each Tachyon configuration property as a key-value pair.
Tachyon configuration properties are loaded into this class in the following order with decreasing priority:
1. Java system properties;
2. Environment variables via tachyon-env.sh or from OS settings;
3. Site specific properties via tachyon-site.properties file;
4. Default properties via tachyon-default.properties file.
The default properties are defined in a property file tachyon-default.properties distributed with Tachyon jar. Tachyon users can override values of these default properties by creating tachyon-site.properties and putting it under java CLASSPATH when running Tachyon (e.g., ${TACHYON_HOME}/conf/)
Developers can create an instance of this class by new TachyonConf(), which will load values from any Java system properties set as well.
The class only supports creation using new TachyonConf(properties) to override default values.

Field Summary

Fields
Modifier and Type Field and Description

static String DEFAULT_PROPERTIES
File to set default properties

static String SITE_PROPERTIES
File to set customized properties

Fields
Modifier and Type	Field and Description
`static String`	`DEFAULT_PROPERTIES` File to set default properties
`static String`	`SITE_PROPERTIES` File to set customized properties

Constructor Summary

Constructors
Constructor and Description
`TachyonConf()` Default constructor.
`TachyonConf(Map<String,String> props)` Overrides default properties.
`TachyonConf(Properties props)` Overrides default properties.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`containsKey(String key)`
`boolean`	`equals(Object obj)`
`String`	`get(String key)`
`boolean`	`getBoolean(String key)`
`long`	`getBytes(String key)`
`<T> Class<T>`	`getClass(String key)`
`double`	`getDouble(String key)`
`<T extends Enum<T>> T`	`getEnum(String key, Class<T> enumType)`
`float`	`getFloat(String key)`
`int`	`getInt(String key)`
`Properties`	`getInternalProperties()`
`List<String>`	`getList(String key, String delimiter)`
`long`	`getLong(String key)`
`int`	`hashCode()`
`void`	`merge(TachyonConf alternateConf)` Merge the current configuration properties with another one.
`void`	`set(String key, String value)`
`Map<String,String>`	`toMap()` Returns the properties as a Map.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - DEFAULT_PROPERTIES
```
public static final String DEFAULT_PROPERTIES
```
    File to set default properties
    
    See Also:
    Constant Field Values
  - SITE_PROPERTIES
```
public static final String SITE_PROPERTIES
```
    File to set customized properties
    
    See Also:
    Constant Field Values
- Constructor Detail
  - TachyonConf
```
public TachyonConf(Map<String,String> props)
```
    Overrides default properties.
    
    Parameters:
    props - override Properties
  - TachyonConf
```
public TachyonConf(Properties props)
```
    Overrides default properties.
    
    Parameters:
    props - override Properties
  - TachyonConf
```
public TachyonConf()
```
    Default constructor. Most clients will call this constructor to allow default loading of properties to happen.
- Method Detail
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - getInternalProperties
```
public Properties getInternalProperties()
```
    Returns:
    the deep copy of the internal Properties of this TachyonConf instance
  - merge
```
public void merge(TachyonConf alternateConf)
```
    Merge the current configuration properties with another one. A property from the new configuration wins if it also appears in the current configuration.
    
    Parameters:
    alternateConf - The source TachyonConf to be merged.
  - set
```
public void set(String key,
       String value)
```
  - get
```
public String get(String key)
```
  - containsKey
```
public boolean containsKey(String key)
```
  - getInt
```
public int getInt(String key)
```
  - getLong
```
public long getLong(String key)
```
  - getDouble
```
public double getDouble(String key)
```
  - getFloat
```
public float getFloat(String key)
```
  - getBoolean
```
public boolean getBoolean(String key)
```
  - getList
```
public List<String> getList(String key,
                   String delimiter)
```
  - getEnum
```
public <T extends Enum<T>> T getEnum(String key,
                            Class<T> enumType)
```
  - getBytes
```
public long getBytes(String key)
```
  - getClass
```
public <T> Class<T> getClass(String key)
```
  - toMap
```
public Map<String,String> toMap()
```
    Returns the properties as a Map.
    
    Returns:
    a Map from each property name to its property values
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class TachyonConf

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_PROPERTIES

SITE_PROPERTIES

Constructor Detail

TachyonConf

TachyonConf

TachyonConf

Method Detail

hashCode

equals

getInternalProperties

merge

set

get

containsKey

getInt

getLong

getDouble

getFloat

getBoolean

getList

getEnum

getBytes

getClass

toMap

toString