org.apache.hadoop.mapreduce

类 CounterGroup

java.lang.Object

org.apache.hadoop.mapreduce.CounterGroup

所有已实现的接口:

Iterable<Counter>, Writable

public class CounterGroup
extends Object
implements Writable, Iterable<Counter>

A group of Counters that logically belong together. Typically, it is an Enum subclass and the counters are the values.

构造器概要

构造器

限定符	构造器和说明
protected	CounterGroup(String name)
protected	CounterGroup(String name, String displayName)

方法概要

方法

限定符和类型	方法和说明
boolean	equals(Object genericRight)
Counter	findCounter(String counterName)
protected Counter	findCounter(String counterName, String displayName) Internal to find a counter in a group.
String	getDisplayName() Get the display name of the group.
String	getName() Get the internal name of the group
static ResourceBundle	getResourceBundle(String enumClassName) Returns the specified resource bundle, or throws an exception.
int	hashCode()
void	incrAllCounters(CounterGroup rightGroup)
Iterator<Counter>	iterator()
void	readFields(DataInput in) Deserialize the fields of this object from in.
int	size() Returns the number of counters in this group.
void	write(DataOutput out) Serialize the fields of this object to out.

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CounterGroup

protected CounterGroup(String name)

CounterGroup

protected CounterGroup(String name,
            String displayName)

方法详细资料

getResourceBundle

@InterfaceAudience.Private
public static ResourceBundle getResourceBundle(String enumClassName)
                                        throws MissingResourceException

Returns the specified resource bundle, or throws an exception.

抛出:

MissingResourceException - if the bundle isn't found

getName

public String getName()

Get the internal name of the group

返回:

the internal name

getDisplayName

public String getDisplayName()

Get the display name of the group.

返回:

the human readable name

findCounter

protected Counter findCounter(String counterName,
                  String displayName)

Internal to find a counter in a group.

参数:

counterName - the name of the counter

displayName - the display name of the counter

返回:

the counter that was found or added

findCounter

public Counter findCounter(String counterName)

iterator

public Iterator<Counter> iterator()

指定者:

iterator 在接口中 Iterable<Counter>

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException

size

public int size()

Returns the number of counters in this group.

equals

public boolean equals(Object genericRight)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

incrAllCounters

public void incrAllCounters(CounterGroup rightGroup)