| Package | Description | 
|---|---|
| org.apache.hadoop.mapred.lib.aggregate | |
| org.apache.hadoop.mapreduce.lib.aggregate | 
| Modifier and Type | Interface and Description | 
|---|---|
interface  | 
ValueAggregatorDescriptor
This interface defines the contract a value aggregator descriptor must
 support. 
 | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
UserDefinedValueAggregatorDescriptor
This class implements a wrapper for a user defined value 
 aggregator descriptor. 
 | 
class  | 
ValueAggregatorBaseDescriptor
This class implements the common functionalities of 
 the subclasses of ValueAggregatorDescriptor class. 
 | 
| Modifier and Type | Field and Description | 
|---|---|
protected ValueAggregatorDescriptor | 
UserDefinedValueAggregatorDescriptor.theAggregatorDescriptor  | 
| Modifier and Type | Field and Description | 
|---|---|
protected static ArrayList<ValueAggregatorDescriptor> | 
ValueAggregatorJobBase.aggregatorDescriptorList  | 
| Modifier and Type | Method and Description | 
|---|---|
protected static ValueAggregatorDescriptor | 
ValueAggregatorJobBase.getValueAggregatorDescriptor(String spec,
                            Configuration conf)  | 
| Modifier and Type | Method and Description | 
|---|---|
protected static ArrayList<ValueAggregatorDescriptor> | 
ValueAggregatorJobBase.getAggregatorDescriptors(Configuration conf)  | 
Copyright © 2019 Apache Software Foundation. All rights reserved.