| Package | Description |
|---|---|
| org.apache.hadoop.mapred.lib.aggregate | |
| org.apache.hadoop.mapreduce.lib.aggregate |
| Class and Description |
|---|
| DoubleValueSum
This class implements a value aggregator that sums up a sequence of double
values.
|
| LongValueMax
This class implements a value aggregator that maintain the maximum of
a sequence of long values.
|
| LongValueMin
This class implements a value aggregator that maintain the minimum of
a sequence of long values.
|
| LongValueSum
This class implements a value aggregator that sums up
a sequence of long values.
|
| StringValueMax
This class implements a value aggregator that maintain the biggest of
a sequence of strings.
|
| StringValueMin
This class implements a value aggregator that maintain the smallest of
a sequence of strings.
|
| UniqValueCount
This class implements a value aggregator that dedupes a sequence of objects.
|
| UserDefinedValueAggregatorDescriptor
This class implements a wrapper for a user defined value
aggregator descriptor.
|
| ValueAggregator
This interface defines the minimal protocol for value aggregators.
|
| ValueAggregatorBaseDescriptor
This class implements the common functionalities of
the subclasses of ValueAggregatorDescriptor class.
|
| ValueAggregatorDescriptor
This interface defines the contract a value aggregator descriptor must
support.
|
| ValueHistogram
This class implements a value aggregator that computes the
histogram of a sequence of strings.
|
| Class and Description |
|---|
| ValueAggregator
This interface defines the minimal protocol for value aggregators.
|
| ValueAggregatorDescriptor
This interface defines the contract a value aggregator descriptor must
support.
|
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