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

Packages that use RecordReader

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

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

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

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

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

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

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

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

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

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

protected RecordReader<K,V>

CombineFileRecordReader.curReader

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

protected Class<RecordReader<K,V>>	CombineFileRecordReader.rrClass
protected Constructor<RecordReader<K,V>>	CombineFileRecordReader.rrConstructor

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

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

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

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

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

RecordReader<LongWritable,T>

DBInputFormat.getRecordReader(InputSplit split, JobConf job, Reporter reporter) Get the RecordReader for the given InputSplit.