com.ebay.erl.mobius.core.mapred
Class TotalSortReducer
java.lang.Object
org.apache.hadoop.mapred.MapReduceBase
com.ebay.erl.mobius.core.datajoin.DataJoinReducer<Tuple,Tuple,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.WritableComparable<?>>
com.ebay.erl.mobius.core.mapred.DefaultMobiusReducer
com.ebay.erl.mobius.core.mapred.TotalSortReducer
- All Implemented Interfaces:
- java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<DataJoinKey,DataJoinValue,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.WritableComparable<?>>
public class TotalSortReducer
- extends DefaultMobiusReducer
Reducer for mobius total sort job.
This product is licensed under the Apache License, Version 2.0,
available at http://www.apache.org/licenses/LICENSE-2.0.
This product contains portions derived from Apache hadoop which is
licensed under the Apache License, Version 2.0, available at
http://hadoop.apache.org.
© 2007 – 2012 eBay Inc., Evan Chiu, Woody Zhou, Neel Sundaresan
Fields inherited from class com.ebay.erl.mobius.core.mapred.DefaultMobiusReducer |
_persistantCriteria, _projections, isOuterJoin, multiDatasetExtendFunction, multiDatasetGroupFunction, nullReplacement, outputColumnNames, reporterSet, requirePreCrossProduct, singleDatasetExtendFunction, singleDatasetExtendFunResult, singleDatasetGroupFunction, valuesForAllDatasets |
Method Summary |
void |
configure(org.apache.hadoop.mapred.JobConf conf)
|
void |
joinreduce(Tuple key,
DataJoinValueGroup<Tuple> values,
org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.WritableComparable<?>> output,
org.apache.hadoop.mapred.Reporter reporter)
reduce() |
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase |
close |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.io.Closeable |
close |
TotalSortReducer
public TotalSortReducer()
configure
public void configure(org.apache.hadoop.mapred.JobConf conf)
- Specified by:
configure
in interface org.apache.hadoop.mapred.JobConfigurable
- Overrides:
configure
in class DefaultMobiusReducer
joinreduce
public void joinreduce(Tuple key,
DataJoinValueGroup<Tuple> values,
org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.WritableComparable<?>> output,
org.apache.hadoop.mapred.Reporter reporter)
throws java.io.IOException
- reduce()
Output key is NullWritable
and output
value is Tuple
- Overrides:
joinreduce
in class DefaultMobiusReducer
- Throws:
java.io.IOException