org.apache.hadoop.mapreduce.lib.aggregate.ValueAggregatorJobBase<K1,V1>

@Public @Stable public class ValueAggregatorJobBase<K1 extends WritableComparable<?>,V1 extends Writable> extends Object

This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate.

Field Details
- DESCRIPTOR
  
  public static final String DESCRIPTOR
  See Also:
  
  Constant Field Values
- DESCRIPTOR_NUM
  
  public static final String DESCRIPTOR_NUM
  See Also:
  
  Constant Field Values
- USER_JAR
  
  public static final String USER_JAR
  See Also:
  
  Constant Field Values
- aggregatorDescriptorList
  
  protected static ArrayList<ValueAggregatorDescriptor> aggregatorDescriptorList
Constructor Details
- ValueAggregatorJobBase
  
  public ValueAggregatorJobBase()
Method Details
- setup
  
  public static void setup(Configuration job)
- getValueAggregatorDescriptor
  
  protected static ValueAggregatorDescriptor getValueAggregatorDescriptor(String spec, Configuration conf)
- getAggregatorDescriptors
  
  protected static ArrayList<ValueAggregatorDescriptor> getAggregatorDescriptors(Configuration conf)
- logSpec
  
  protected static void logSpec()

Class ValueAggregatorJobBase<K1 extends WritableComparable<?>,V1 extends Writable>

Field Summary