com.ebay.erl.mobius.core.datajoin
Class DataJoinMapper<IK,IV,OK extends org.apache.hadoop.io.WritableComparable<?>,OV extends org.apache.hadoop.io.WritableComparable<?>>
java.lang.Object
org.apache.hadoop.mapred.MapReduceBase
com.ebay.erl.mobius.core.datajoin.DataJoinMapper<IK,IV,OK,OV>
- Type Parameters:
IK
- IV
- OK
- OV
-
- All Implemented Interfaces:
- java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<IK,IV,OK,OV>
- Direct Known Subclasses:
- AbstractMobiusMapper
public abstract class DataJoinMapper<IK,IV,OK extends org.apache.hadoop.io.WritableComparable<?>,OV extends org.apache.hadoop.io.WritableComparable<?>>
- extends org.apache.hadoop.mapred.MapReduceBase
- implements org.apache.hadoop.mapred.Mapper<IK,IV,OK,OV>
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
Field Summary |
protected org.apache.hadoop.conf.Configuration |
conf
|
protected boolean |
hasReducer
|
Method Summary |
void |
configure(org.apache.hadoop.mapred.JobConf job)
|
org.apache.hadoop.io.WritableComparable<?> |
extractSortValueKeyword(OV value)
|
abstract java.lang.String |
getDatasetID()
|
java.lang.Class<?> |
getSortValueComparator()
|
abstract void |
joinmap(IK key,
IV value,
org.apache.hadoop.mapred.OutputCollector<OK,OV> output,
org.apache.hadoop.mapred.Reporter reporter)
|
void |
map(IK key,
IV value,
org.apache.hadoop.mapred.OutputCollector<OK,OV> output,
org.apache.hadoop.mapred.Reporter reporter)
|
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 |
conf
protected org.apache.hadoop.conf.Configuration conf
hasReducer
protected boolean hasReducer
DataJoinMapper
public DataJoinMapper()
configure
public void configure(org.apache.hadoop.mapred.JobConf job)
- Specified by:
configure
in interface org.apache.hadoop.mapred.JobConfigurable
- Overrides:
configure
in class org.apache.hadoop.mapred.MapReduceBase
map
public void map(IK key,
IV value,
org.apache.hadoop.mapred.OutputCollector<OK,OV> output,
org.apache.hadoop.mapred.Reporter reporter)
throws java.io.IOException
- Specified by:
map
in interface org.apache.hadoop.mapred.Mapper<IK,IV,OK extends org.apache.hadoop.io.WritableComparable<?>,OV extends org.apache.hadoop.io.WritableComparable<?>>
- Throws:
java.io.IOException
joinmap
public abstract void joinmap(IK key,
IV value,
org.apache.hadoop.mapred.OutputCollector<OK,OV> output,
org.apache.hadoop.mapred.Reporter reporter)
throws java.io.IOException
- Throws:
java.io.IOException
getDatasetID
public abstract java.lang.String getDatasetID()
extractSortValueKeyword
public org.apache.hadoop.io.WritableComparable<?> extractSortValueKeyword(OV value)
getSortValueComparator
public java.lang.Class<?> getSortValueComparator()