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java.lang.Objectorg.apache.hadoop.mapreduce.Counters
public class Counters
| Constructor Summary | |
|---|---|
Counters()
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Counters(Counters counters)
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| Method Summary | |
|---|---|
int |
countCounters()
Returns the total number of counters, by summing the number of counters in each group. |
boolean |
equals(Object genericRight)
|
Counter |
findCounter(Enum<?> key)
Find the counter for the given enum. |
Counter |
findCounter(String groupName,
String counterName)
|
CounterGroup |
getGroup(String groupName)
Returns the named counter group, or an empty group if there is none with the specified name. |
Collection<String> |
getGroupNames()
Returns the names of all counter classes. |
int |
hashCode()
|
void |
incrAllCounters(Counters other)
Increments multiple counters by their amounts in another Counters instance. |
Iterator<CounterGroup> |
iterator()
|
void |
readFields(DataInput in)
Read a set of groups. |
String |
toString()
Return textual representation of the counter values. |
void |
write(DataOutput out)
Write the set of groups. |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public Counters()
public Counters(Counters counters)
| Method Detail |
|---|
public Counter findCounter(String groupName,
String counterName)
public Counter findCounter(Enum<?> key)
key - the counter key
public Collection<String> getGroupNames()
public Iterator<CounterGroup> iterator()
iterator in interface Iterable<CounterGroup>public CounterGroup getGroup(String groupName)
public int countCounters()
public void write(DataOutput out)
throws IOException
write in interface Writableout - DataOuput to serialize this object into.
IOException
public void readFields(DataInput in)
throws IOException
readFields in interface Writablein - DataInput to deseriablize this object from.
IOExceptionpublic String toString()
toString in class Objectpublic void incrAllCounters(Counters other)
other - the other Counters instancepublic boolean equals(Object genericRight)
equals in class Objectpublic int hashCode()
hashCode in class Object
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