public class LongSumAggregator extends BasicAggregator<org.apache.hadoop.io.LongWritable>
Constructor and Description |
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LongSumAggregator() |
Modifier and Type | Method and Description |
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void |
aggregate(org.apache.hadoop.io.LongWritable value)
Add a new value.
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org.apache.hadoop.io.LongWritable |
createInitialValue()
Return new aggregated value which is neutral to aggregate operation.
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getAggregatedValue, reset, setAggregatedValue
public void aggregate(org.apache.hadoop.io.LongWritable value)
Aggregator
value
- Value to be aggregated.public org.apache.hadoop.io.LongWritable createInitialValue()
Aggregator
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