org.apache.mahout.df.mapreduce.partial
Class Step0Job.Step0Mapper
java.lang.Object
org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable,Step0Job.Step0Output>
org.apache.mahout.df.mapreduce.partial.Step0Job.Step0Mapper
- Enclosing class:
- Step0Job
protected static class Step0Job.Step0Mapper
- extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable,Step0Job.Step0Output>
Outputs the first key and the size of the partition
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper |
org.apache.hadoop.mapreduce.Mapper.Context |
Method Summary |
protected void |
cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
|
protected void |
configure(int p)
Useful when testing |
protected void |
map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
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 |
run |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Step0Job.Step0Mapper
protected Step0Job.Step0Mapper()
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.IntWritable,Step0Job.Step0Output>
- Throws:
java.io.IOException
java.lang.InterruptedException
configure
protected void configure(int p)
- Useful when testing
- Parameters:
p
-
map
protected void map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
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.IntWritable,Step0Job.Step0Output>
- Throws:
java.io.IOException
java.lang.InterruptedException
cleanup
protected void cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
cleanup
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable,Step0Job.Step0Output>
- Throws:
java.io.IOException
java.lang.InterruptedException
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