Uses of Interface
org.apache.hadoop.mapred.RecordReader

Packages that use RecordReader

Package	Description
org.apache.hadoop.mapred
org.apache.hadoop.mapred.join
org.apache.hadoop.mapred.lib
org.apache.hadoop.mapred.lib.db

Uses of RecordReader in org.apache.hadoop.mapred

Classes in org.apache.hadoop.mapred that implement RecordReader

Modifier and Type	Class and Description
class	KeyValueLineRecordReader This class treats a line in the input as a key/value pair separated by a separator character.
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 SequenceFiles.

Methods in org.apache.hadoop.mapred that return RecordReader

Modifier and Type	Method and Description
abstract RecordReader<K,V>	MultiFileInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter)
RecordReader<K,V>	SequenceFileInputFilter.getRecordReader(InputSplit split, JobConf job, Reporter reporter) Create a record reader for the given split
RecordReader<LongWritable,Text>	TextInputFormat.getRecordReader(InputSplit genericSplit, JobConf job, Reporter reporter)
RecordReader<BytesWritable,BytesWritable>	SequenceFileAsBinaryInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter)
RecordReader<LongWritable,BytesWritable>	FixedLengthInputFormat.getRecordReader(InputSplit genericSplit, JobConf job, Reporter reporter)
abstract RecordReader<K,V>	FileInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter)
RecordReader<Text,Text>	SequenceFileAsTextInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter)
RecordReader<K,V>	SequenceFileInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter)
RecordReader<Text,Text>	KeyValueTextInputFormat.getRecordReader(InputSplit genericSplit, JobConf job, Reporter reporter)
RecordReader<K,V>	InputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter) Get the RecordReader for the given InputSplit.

Methods in org.apache.hadoop.mapred with parameters of type RecordReader

Modifier and Type	Method and Description
void	MapRunnable.run(RecordReader<K1,V1> input, OutputCollector<K2,V2> output, Reporter reporter) Start mapping input <key, value> pairs.
void	MapRunner.run(RecordReader<K1,V1> input, OutputCollector<K2,V2> output, Reporter reporter)

Uses of RecordReader in org.apache.hadoop.mapred.join

Subinterfaces of RecordReader in org.apache.hadoop.mapred.join

Modifier and Type	Interface and Description
interface	ComposableRecordReader<K extends WritableComparable,V extends Writable> Additional operations required of a RecordReader to participate in a join.

Classes in org.apache.hadoop.mapred.join that implement RecordReader

Modifier and Type	Class and Description
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.

Uses of RecordReader in org.apache.hadoop.mapred.lib

Classes in org.apache.hadoop.mapred.lib that implement RecordReader

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.

Fields in org.apache.hadoop.mapred.lib declared as RecordReader

Modifier and Type	Field and Description
protected RecordReader<K,V>	CombineFileRecordReader.curReader

Fields in org.apache.hadoop.mapred.lib with type parameters of type RecordReader

Modifier and Type	Field and Description
protected Constructor<RecordReader<K,V>>	CombineFileRecordReader.rrConstructor

Methods in org.apache.hadoop.mapred.lib that return RecordReader

Modifier and Type	Method and Description
abstract RecordReader<K,V>	CombineFileInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter) This is not implemented yet.
RecordReader<LongWritable,Text>	NLineInputFormat.getRecordReader(InputSplit genericSplit, JobConf job, Reporter reporter)
RecordReader<K,V>	CombineSequenceFileInputFormat.getRecordReader(InputSplit split, JobConf conf, Reporter reporter)
RecordReader<LongWritable,Text>	CombineTextInputFormat.getRecordReader(InputSplit split, JobConf conf, Reporter reporter)

Methods in org.apache.hadoop.mapred.lib with parameters of type RecordReader

Modifier and Type	Method and Description
void	MultithreadedMapRunner.run(RecordReader<K1,V1> input, OutputCollector<K2,V2> output, Reporter reporter)

Constructor parameters in org.apache.hadoop.mapred.lib with type arguments of type RecordReader

Constructor and Description
CombineFileRecordReader(JobConf job, CombineFileSplit split, Reporter reporter, Class<RecordReader<K,V>> rrClass) A generic RecordReader that can hand out different recordReaders for each chunk in the CombineFileSplit.

Uses of RecordReader in org.apache.hadoop.mapred.lib.db

Methods in org.apache.hadoop.mapred.lib.db that return RecordReader

Modifier and Type	Method and Description
RecordReader<LongWritable,T>	DBInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter) Get the RecordReader for the given InputSplit.