Package | Description |
---|---|
org.apache.hadoop.examples.pi |
This package consists of a map/reduce application,
distbbp,
which computes exact binary digits of the mathematical constant π.
|
org.apache.hadoop.examples.terasort |
This package consists of 3 map/reduce applications for Hadoop to
compete in the annual terabyte sort
competition.
|
org.apache.hadoop.io |
Generic i/o code for use when reading and writing data to the network,
to databases, and to files.
|
Modifier and Type | Method and Description |
---|---|
RecordReader<NullWritable,SummationWritable> |
DistSum.Machine.AbstractInputFormat.createRecordReader(InputSplit generic,
TaskAttemptContext context)
Specify how to read the records
|
Modifier and Type | Method and Description |
---|---|
protected void |
DistSum.ReduceSide.PartitionMapper.map(NullWritable nw,
SummationWritable sigma,
Mapper.Context context)
Partitions sigma into parts
|
protected void |
DistSum.MapSide.SummingMapper.map(NullWritable nw,
SummationWritable sigma,
Mapper.Context context) |
Modifier and Type | Method and Description |
---|---|
void |
TeraGen.SortGenMapper.map(LongWritable row,
NullWritable ignored,
Mapper.Context context) |
Modifier and Type | Method and Description |
---|---|
static NullWritable |
NullWritable.get()
Returns the single instance of this class.
|
Modifier and Type | Method and Description |
---|---|
int |
NullWritable.compareTo(NullWritable other) |
Copyright © 2013 Apache Software Foundation. All rights reserved.