de.hpi.fgis.voidgen.hadoop.closure
Class Step1Reducer
java.lang.Object
org.apache.hadoop.mapreduce.Reducer<Step1Pair,ClusterId,ClusterId,NodeXOrId>
de.hpi.fgis.voidgen.hadoop.closure.Step1Reducer
public class Step1Reducer
- extends org.apache.hadoop.mapreduce.Reducer<Step1Pair,ClusterId,ClusterId,NodeXOrId>
Applies the current smallest cluster identifier
to each vertex and each other cluster identifier
that describes the same cluster.
Prepares the key-value pairs for the second step
of transitive closure generation (merging clusters).
- Author:
- Johannes Gosda, Hasso Plattner Institute at University of Potsdam, Germany
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer |
org.apache.hadoop.mapreduce.Reducer.Context |
Method Summary |
void |
reduce(Step1Pair key,
java.lang.Iterable<ClusterId> values,
org.apache.hadoop.mapreduce.Reducer.Context context)
|
Methods inherited from class org.apache.hadoop.mapreduce.Reducer |
cleanup, run, setup |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Step1Reducer
public Step1Reducer()
reduce
public void reduce(Step1Pair key,
java.lang.Iterable<ClusterId> values,
org.apache.hadoop.mapreduce.Reducer.Context context)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
reduce
in class org.apache.hadoop.mapreduce.Reducer<Step1Pair,ClusterId,ClusterId,NodeXOrId>
- Throws:
java.io.IOException
java.lang.InterruptedException