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java.lang.Object org.apache.hadoop.mapred.Counters.Group
public static class Counters.Group
Group
of counters, comprising of counters from a particular
counter Enum
class.
Group
handles localization of the class name and the
counter names.
Method Summary | |
---|---|
Counters.Counter |
getCounter(int id,
String name)
Deprecated. use getCounter(String) instead |
long |
getCounter(String counterName)
Returns the value of the specified counter, or 0 if the counter does not exist. |
Counters.Counter |
getCounterForName(String name)
Get the counter for the given name and create it if it doesn't exist. |
String |
getDisplayName()
Returns localized name of the group. |
String |
getName()
Returns raw name of the group. |
Iterator<Counters.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 . |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
---|
public String getName()
public String getDisplayName()
public long getCounter(String counterName)
@Deprecated public Counters.Counter getCounter(int id, String name)
getCounter(String)
instead
id
- the numeric id of the counter within the groupname
- the internal counter name
public Counters.Counter getCounterForName(String name)
name
- the internal counter name
public int size()
public void write(DataOutput out) throws IOException
Writable
out
.
write
in interface Writable
out
- DataOuput
to serialize this object into.
IOException
public void readFields(DataInput in) throws IOException
Writable
in
.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields
in interface Writable
in
- DataInput
to deseriablize this object from.
IOException
public Iterator<Counters.Counter> iterator()
iterator
in interface Iterable<Counters.Counter>
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