Package | Description |
---|---|
org.apache.hadoop.examples |
Hadoop example code.
|
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.mapred.gridmix | |
org.apache.hadoop.mapred.lib | |
org.apache.hadoop.mapred.lib.db | |
org.apache.hadoop.mapreduce | |
org.apache.hadoop.mapreduce.lib.db | |
org.apache.hadoop.mapreduce.lib.input | |
org.apache.hadoop.mapreduce.lib.join | |
org.apache.hadoop.mapreduce.task | |
org.apache.hadoop.tools.mapred | |
org.apache.hadoop.tools.mapred.lib |
Modifier and Type | Class and Description |
---|---|
static class |
MultiFileWordCount.CombineFileLineRecordReader
RecordReader is responsible from extracting records from a chunk
of the CombineFileSplit.
|
Modifier and Type | Method and Description |
---|---|
RecordReader<LongWritable,IntWritable> |
BaileyBorweinPlouffe.BbpInputFormat.createRecordReader(InputSplit generic,
TaskAttemptContext context)
Create a record reader for a given split.
|
RecordReader<MultiFileWordCount.WordOffset,Text> |
MultiFileWordCount.MyInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context) |
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 |
---|---|
RecordReader<Text,Text> |
TeraInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context) |
Modifier and Type | Method and Description |
---|---|
RecordReader<LongWritable,LongWritable> |
SleepJob.SleepInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context) |
Modifier and Type | Method and Description |
---|---|
RecordReader<K,V> |
CombineFileInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context) |
Modifier and Type | Class and Description |
---|---|
protected class |
DBInputFormat.DBRecordReader
A RecordReader that reads records from a SQL table.
|
Modifier and Type | Method and Description |
---|---|
abstract RecordReader<K,V> |
InputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context)
Create a record reader for a given split.
|
Modifier and Type | Method and Description |
---|---|
static <K1,V1,K2,V2> |
ContextFactory.cloneMapContext(MapContext<K1,V1,K2,V2> context,
Configuration conf,
RecordReader<K1,V1> reader,
RecordWriter<K2,V2> writer)
Copy a custom WrappedMapper.Context, optionally replacing
the input and output.
|
Modifier and Type | Class and Description |
---|---|
class |
DataDrivenDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a SQL table,
using data-driven WHERE clause splits.
|
class |
DBRecordReader<T extends DBWritable>
A RecordReader that reads records from a SQL table.
|
class |
MySQLDataDrivenDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a MySQL table via DataDrivenDBRecordReader
|
class |
MySQLDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a MySQL table.
|
class |
OracleDataDrivenDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a Oracle table via DataDrivenDBRecordReader
|
class |
OracleDBRecordReader<T extends DBWritable>
A RecordReader that reads records from an Oracle SQL table.
|
Modifier and Type | Method and Description |
---|---|
protected RecordReader<LongWritable,T> |
DataDrivenDBInputFormat.createDBRecordReader(DBInputFormat.DBInputSplit split,
Configuration conf) |
protected RecordReader<LongWritable,T> |
OracleDataDrivenDBInputFormat.createDBRecordReader(DBInputFormat.DBInputSplit split,
Configuration conf) |
protected RecordReader<LongWritable,T> |
DBInputFormat.createDBRecordReader(DBInputFormat.DBInputSplit split,
Configuration conf) |
RecordReader<LongWritable,T> |
DBInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context)
Create a record reader for a given split.
|
Modifier and Type | Class and Description |
---|---|
class |
CombineFileRecordReader<K,V>
A generic RecordReader that can hand out different recordReaders
for each chunk in a
CombineFileSplit . |
class |
CombineFileRecordReaderWrapper<K,V>
A wrapper class for a record reader that handles a single file split.
|
class |
DelegatingRecordReader<K,V>
This is a delegating RecordReader, which delegates the functionality to the
underlying record reader in
TaggedInputSplit |
class |
KeyValueLineRecordReader
This class treats a line in the input as a key/value pair separated by a
separator character.
|
class |
LineRecordReader
Treats keys as offset in file and value as line.
|
static class |
SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader
Read records from a SequenceFile as binary (raw) bytes.
|
class |
SequenceFileAsTextRecordReader
This class converts the input keys and values to their String forms by
calling toString() method.
|
class |
SequenceFileRecordReader<K,V>
An
RecordReader for SequenceFile s. |
Modifier and Type | Field and Description |
---|---|
protected RecordReader<K,V> |
CombineFileRecordReader.curReader |
Modifier and Type | Field and Description |
---|---|
protected Class<? extends RecordReader<K,V>> |
CombineFileRecordReader.rrClass |
protected Constructor<? extends RecordReader<K,V>> |
CombineFileRecordReader.rrConstructor |
Constructor and Description |
---|
CombineFileRecordReader(CombineFileSplit split,
TaskAttemptContext context,
Class<? extends RecordReader<K,V>> rrClass)
A generic RecordReader that can hand out different recordReaders
for each chunk in the CombineFileSplit.
|
Modifier and Type | Class and Description |
---|---|
class |
ComposableRecordReader<K extends WritableComparable<?>,V extends Writable>
Additional operations required of a RecordReader to participate in a join.
|
class |
CompositeRecordReader<K extends WritableComparable<?>,V extends Writable,X extends Writable>
A RecordReader that can effect joins of RecordReaders sharing a common key
type and partitioning.
|
class |
InnerJoinRecordReader<K extends WritableComparable<?>>
Full inner join.
|
class |
JoinRecordReader<K extends WritableComparable<?>>
Base class for Composite joins returning Tuples of arbitrary Writables.
|
class |
MultiFilterRecordReader<K extends WritableComparable<?>,V extends Writable>
Base class for Composite join returning values derived from multiple
sources, but generally not tuples.
|
class |
OuterJoinRecordReader<K extends WritableComparable<?>>
Full outer join.
|
class |
OverrideRecordReader<K extends WritableComparable<?>,V extends Writable>
Prefer the "rightmost" data source for this key.
|
class |
WrappedRecordReader<K extends WritableComparable<?>,U extends Writable>
Proxy class for a RecordReader participating in the join framework.
|
Modifier and Type | Method and Description |
---|---|
RecordReader<K,TupleWritable> |
CompositeInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext taskContext)
Construct a CompositeRecordReader for the children of this InputFormat
as defined in the init expression.
|
Constructor and Description |
---|
MapContextImpl(Configuration conf,
TaskAttemptID taskid,
RecordReader<KEYIN,VALUEIN> reader,
RecordWriter<KEYOUT,VALUEOUT> writer,
OutputCommitter committer,
StatusReporter reporter,
InputSplit split) |
Modifier and Type | Method and Description |
---|---|
RecordReader<Text,FileStatus> |
UniformSizeInputFormat.createRecordReader(InputSplit split,
TaskAttemptContext context)
Implementation of InputFormat::createRecordReader().
|
Modifier and Type | Class and Description |
---|---|
class |
DynamicRecordReader<K,V>
The DynamicRecordReader is used in conjunction with the DynamicInputFormat
to implement the "Worker pattern" for DistCp.
|
Modifier and Type | Method and Description |
---|---|
RecordReader<K,V> |
DynamicInputFormat.createRecordReader(InputSplit inputSplit,
TaskAttemptContext taskAttemptContext)
Implementation of Inputformat::createRecordReader().
|
Copyright © 2013 Apache Software Foundation. All rights reserved.