@InterfaceAudience.Public @InterfaceStability.Stable public interface Counter extends Writable
Counters
represent global counters, defined either by the
Map-Reduce framework or applications. Each Counter
is named by
an Enum
and has a long for the value.
Counters
are bunched into Groups, each comprising of
counters from a particular Enum
class.
Modifier and Type | Method and Description |
---|---|
String |
getDisplayName()
Get the display name of the counter.
|
String |
getName() |
long |
getValue()
What is the current value of this counter?
|
void |
increment(long incr)
Increment this counter by the given value
|
void |
setDisplayName(String displayName)
Deprecated.
(and no-op by default)
|
void |
setValue(long value)
Set this counter by the given value
|
readFields, write
@Deprecated void setDisplayName(String displayName)
displayName
- of the counterString getName()
String getDisplayName()
long getValue()
void setValue(long value)
value
- the value to setvoid increment(long incr)
incr
- the value to increase this counter byCopyright © 2021 Apache Software Foundation. All rights reserved.