public interface ValueAggregatorDescriptor
Modifier and Type | Field and Description |
---|---|
static org.apache.hadoop.io.Text |
ONE |
static java.lang.String |
TYPE_SEPARATOR |
Modifier and Type | Method and Description |
---|---|
void |
configure(JobConf job)
Configure the object
|
java.util.ArrayList<java.util.Map.Entry<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>> |
generateKeyValPairs(java.lang.Object key,
java.lang.Object val)
Generate a list of aggregation-id/value pairs for the given key/value pair.
|
static final java.lang.String TYPE_SEPARATOR
static final org.apache.hadoop.io.Text ONE
java.util.ArrayList<java.util.Map.Entry<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>> generateKeyValPairs(java.lang.Object key, java.lang.Object val)
key
- input keyval
- input valuevoid configure(JobConf job)
job
- a JobConf object that may contain the information that can be used
to configure the object.Copyright © 2009 The Apache Software Foundation