com.intel.hadoop.graphbuilder.idnormalize.mapreduce
Class TransEdgeMapper<VidType extends org.apache.hadoop.io.WritableComparable<VidType>>
java.lang.Object
org.apache.hadoop.mapred.MapReduceBase
com.intel.hadoop.graphbuilder.idnormalize.mapreduce.TransEdgeMapper<VidType>
- Type Parameters:
VidType
-
- All Implemented Interfaces:
- java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text>
public class TransEdgeMapper<VidType extends org.apache.hadoop.io.WritableComparable<VidType>>
- extends org.apache.hadoop.mapred.MapReduceBase
- implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text>
This mapper class maps each edge as (u,v,data) into (h(v), (D(u), v, data))
where D is the dictionary that contains entry u. Because the input is
partitioned by the hash of source vertex, the number of dictionary loading is
minimized.
Method Summary |
void |
configure(org.apache.hadoop.mapred.JobConf conf)
|
void |
map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text> out,
org.apache.hadoop.mapred.Reporter reporter)
|
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase |
close |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.io.Closeable |
close |
TransEdgeMapper
public TransEdgeMapper()
configure
public void configure(org.apache.hadoop.mapred.JobConf conf)
- Specified by:
configure
in interface org.apache.hadoop.mapred.JobConfigurable
- Overrides:
configure
in class org.apache.hadoop.mapred.MapReduceBase
map
public void map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text> out,
org.apache.hadoop.mapred.Reporter reporter)
throws java.io.IOException
- Specified by:
map
in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text>
- Throws:
java.io.IOException