com.aliyun.odps.counter

Class Counters

java.lang.Object

com.aliyun.odps.counter.Counters

All Implemented Interfaces:

Writable, Iterable<CounterGroup>

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

Counters 由多个 CounterGroup 组成，保存了所有的 Counter 的信息.

See Also:

Counter, CounterGroup, TaskAttemptContext#getCounter(String, String), RunningJob#getCounters()

Constructor Summary

Constructors

Constructor and Description
Counters()
Counters(Counters counters)

Method Summary

Modifier and Type	Method and Description
int	countCounters() 返回Counter的个数
boolean	equals(Object genericRight)
Counter	findCounter(Enum<?> key) 查找 Counter，给定 enum 对象.
Counter	findCounter(String groupName, String counterName) 查找 Counter，给定 Counter 组名和 Counter 名
CounterGroup	getGroup(String groupName) 获取给定名字的 Counter 组，若不存在此 Counter 组，则新建一个.
Collection<String>	getGroupNames() 返回 Counter 组名的集合
int	hashCode()
void	incrAllCounters(Counters other) 将传入的 Counters 里的 Counter 值与本 Counters 的Counter值相加
Iterator<CounterGroup>	iterator()
void	readFields(DataInput in) 从 DataInput 读取
String	toString() 返回Counters的字符串形式.
void	write(DataOutput out) 输出到 DataOutput

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Counters

public Counters()

Counters

public Counters(Counters counters)

Method Detail

findCounter

public Counter findCounter(String groupName,
                           String counterName)

查找 Counter，给定 Counter 组名和 Counter 名

Parameters:

groupName - Counter 组名

counterName - Counter 名称

Returns:

查找到的 Counter 对象

findCounter

public Counter findCounter(Enum<?> key)

查找 Counter，给定 enum 对象.

Parameters:

key - enum 对象

Returns:

查找到的 Counter 对象

getGroupNames

public Collection<String> getGroupNames()

返回 Counter 组名的集合

Returns:

Counter 组名的集合

iterator

public Iterator<CounterGroup> iterator()

Specified by:

iterator in interface Iterable<CounterGroup>

getGroup

public CounterGroup getGroup(String groupName)

获取给定名字的 Counter 组，若不存在此 Counter 组，则新建一个.

Parameters:

groupName - Counter 组名

Returns:

Counter 组

countCounters

public int countCounters()

返回Counter的个数

Returns:

Counter的个数

toString

public String toString()

返回Counters的字符串形式.

Overrides:

toString in class Object

Returns:

Counters的字符串形式

incrAllCounters

public void incrAllCounters(Counters other)

将传入的 Counters 里的 Counter 值与本 Counters 的Counter值相加

Parameters:

other - 待加的Counters

equals

public boolean equals(Object genericRight)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

write

public void write(DataOutput out)
           throws IOException

输出到 DataOutput

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从 DataInput 读取

Specified by:

readFields in interface Writable

Throws:

IOException