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Packages that use Combiner | |
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org.apache.accumulo.core.iterators | |
org.apache.accumulo.core.iterators.user |
Uses of Combiner in org.apache.accumulo.core.iterators |
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Subclasses of Combiner in org.apache.accumulo.core.iterators | |
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class |
LongCombiner
A TypedValueCombiner that translates each Value to a Long before reducing, then encodes the reduced Long back to a Value. |
class |
TypedValueCombiner<V>
A Combiner that decodes each Value to type V before reducing, then encodes the result of typedReduce back to Value. |
Uses of Combiner in org.apache.accumulo.core.iterators.user |
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Subclasses of Combiner in org.apache.accumulo.core.iterators.user | |
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class |
MaxCombiner
A Combiner that interprets Values as Longs and returns the largest Long among them. |
class |
MinCombiner
A Combiner that interprets Values as Longs and returns the smallest Long among them. |
class |
SummingArrayCombiner
A Combiner that interprets Values as arrays of Longs and returns an array of element-wise sums. |
class |
SummingCombiner
A Combiner that interprets Values as Longs and returns their sum. |
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