org.apache.ignite.internal.processors.hadoop.counter

Interface HadoopCounters

public interface HadoopCounters

Counters store.

Method Summary

Modifier and Type	Method and Description
Collection<HadoopCounter>	all() Returns all existing counters.
<T extends HadoopCounter> T	counter(String grp, String name, Class<T> cls) Returns counter for the specified group and counter name.
void	merge(HadoopCounters other) Merges all counters from another store with existing counters.

Method Detail

counter

<T extends HadoopCounter> T counter(String grp,
                                    String name,
                                    Class<T> cls)

Returns counter for the specified group and counter name. Creates new if it does not exist.

Parameters:

grp - Counter group name.

name - Counter name.

cls - Class for new instance creation if it's needed.

Returns:

The counter that was found or added or null if create is false.

all

Collection<HadoopCounter> all()

Returns all existing counters.

Returns:

Collection of counters.

merge

void merge(HadoopCounters other)

Merges all counters from another store with existing counters.

Parameters:

other - Counters to merge with.