An object of this class represents a counter with a group name, counter name, value, and type of aggregation to be performed
Custom counters created by the client or app Stores the names of the counters, and the final aggregated values Since there is no way to get the list of available counters from the context, we need to call addCustomCounter to store the information about the list of available counters.
Stores the information about the counter names and values
Wrapper around Hadoop Counter to make it easier to use.
Hadoop Counters in group "Giraph Stats".
Hadoop Counters in group "Giraph Timers" for timing things.
Base class for groups of Hadoop Counters.
To store the type of aggregation to be done on the counters
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