| 程序包 | 说明 |
|---|---|
| org.apache.hadoop.contrib.index.mapred | |
| 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.mapred |
A software framework for easily writing applications which process vast
amounts of data (multi-terabyte data-sets) parallelly on large clusters
(thousands of nodes) built of commodity hardware in a reliable, fault-tolerant
manner.
|
| org.apache.hadoop.mapred.lib |
Library of generally useful mappers, reducers, and partitioners.
|
| org.apache.hadoop.mapred.lib.db |
org.apache.hadoop.mapred.lib.db Package
This package contains a library to read records from a database as an
input to a mapreduce job, and write the output records to the database.
|
| 限定符和类型 | 方法和说明 |
|---|---|
RecordWriter<Shard,Text> |
IndexUpdateOutputFormat.getRecordWriter(FileSystem fs,
JobConf job,
String name,
Progressable progress) |
| 限定符和类型 | 方法和说明 |
|---|---|
RecordWriter<Text,Text> |
TeraOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
| 限定符和类型 | 类和说明 |
|---|---|
protected static class |
TextOutputFormat.LineRecordWriter<K,V> |
| 限定符和类型 | 方法和说明 |
|---|---|
RecordWriter<K,V> |
TextOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
RecordWriter<K,V> |
SequenceFileOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
RecordWriter<BytesWritable,BytesWritable> |
SequenceFileAsBinaryOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
RecordWriter<K,V> |
OutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress)
Get the
RecordWriter for the given job. |
RecordWriter<WritableComparable,Writable> |
MapFileOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
abstract RecordWriter<K,V> |
FileOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
| 限定符和类型 | 方法和说明 |
|---|---|
protected RecordWriter<K,V> |
MultipleTextOutputFormat.getBaseRecordWriter(FileSystem fs,
JobConf job,
String name,
Progressable arg3) |
protected RecordWriter<K,V> |
MultipleSequenceFileOutputFormat.getBaseRecordWriter(FileSystem fs,
JobConf job,
String name,
Progressable arg3) |
protected abstract RecordWriter<K,V> |
MultipleOutputFormat.getBaseRecordWriter(FileSystem fs,
JobConf job,
String name,
Progressable arg3) |
RecordWriter<K,V> |
NullOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress) |
RecordWriter<K,V> |
MultipleOutputFormat.getRecordWriter(FileSystem fs,
JobConf job,
String name,
Progressable arg3)
Create a composite record writer that can write key/value data to different
output files
|
| 限定符和类型 | 类和说明 |
|---|---|
protected class |
DBOutputFormat.DBRecordWriter
A RecordWriter that writes the reduce output to a SQL table
|
| 限定符和类型 | 方法和说明 |
|---|---|
RecordWriter<K,V> |
DBOutputFormat.getRecordWriter(FileSystem filesystem,
JobConf job,
String name,
Progressable progress)
Get the
RecordWriter for the given job. |
Copyright © 2009 The Apache Software Foundation