org.apache.mahout.fpm.pfpgrowth
Class TransactionSortingMapper
java.lang.Object
org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,TransactionTree>
org.apache.mahout.fpm.pfpgrowth.TransactionSortingMapper
public class TransactionSortingMapper
- extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,TransactionTree>
maps each transaction to all unique items groups in the transaction.
mapper outputs the group id as key and the transaction as value
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper |
org.apache.hadoop.mapreduce.Mapper.Context |
Method Summary |
protected void |
map(org.apache.hadoop.io.LongWritable offset,
org.apache.hadoop.io.Text input,
org.apache.hadoop.mapreduce.Mapper.Context context)
|
protected void |
setup(org.apache.hadoop.mapreduce.Mapper.Context context)
|
Methods inherited from class org.apache.hadoop.mapreduce.Mapper |
cleanup, run |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TransactionSortingMapper
public TransactionSortingMapper()
map
protected void map(org.apache.hadoop.io.LongWritable offset,
org.apache.hadoop.io.Text input,
org.apache.hadoop.mapreduce.Mapper.Context context)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
map
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,TransactionTree>
- Throws:
java.io.IOException
java.lang.InterruptedException
setup
protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
setup
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,TransactionTree>
- Throws:
java.io.IOException
java.lang.InterruptedException
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