/** {@inheritDoc} */
@Override
public synchronized Iterable<String> getGroupNames() {
Collection<String> res = new HashSet<>();
for (HadoopCounter counter : cntrs.values()) res.add(counter.group());
return res;
}
/**
* Returns size of a group.
*
* @param grpName Name of the group.
* @return amount of counters in the given group.
*/
public int groupSize(String grpName) {
int res = 0;
for (HadoopCounter counter : cntrs.values()) {
if (grpName.equals(counter.group())) res++;
}
return res;
}
/**
* Creates new instance based on given counters.
*
* @param cntrs Counters to adapt.
*/
public HadoopMapReduceCounters(
org.apache.ignite.internal.processors.hadoop.counter.HadoopCounters cntrs) {
for (HadoopCounter cntr : cntrs.all())
if (cntr instanceof HadoopLongCounter)
this.cntrs.put(new T2<>(cntr.group(), cntr.name()), (HadoopLongCounter) cntr);
}