Uses of Class
org.apache.hadoop.mapreduce.RecordReader

Packages that use RecordReader

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

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

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

Modifier and Type	Method and Description
RecordReader<K,V>	CombineFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)

Uses of RecordReader in org.apache.hadoop.mapreduce

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

Modifier and Type	Method and Description
abstract RecordReader<K,V>	InputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for a given split.

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

Subclasses of RecordReader in org.apache.hadoop.mapreduce.lib.db

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.

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

Modifier and Type	Method and Description
protected RecordReader<LongWritable,T>	OracleDataDrivenDBInputFormat.createDBRecordReader(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit split, Configuration conf)
protected RecordReader<LongWritable,T>	DBInputFormat.createDBRecordReader(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit split, Configuration conf)
protected RecordReader<LongWritable,T>	DataDrivenDBInputFormat.createDBRecordReader(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit split, Configuration conf)
RecordReader<LongWritable,T>	DBInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for a given split.

Uses of RecordReader in org.apache.hadoop.mapreduce.lib.input

Subclasses of RecordReader in org.apache.hadoop.mapreduce.lib.input

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	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.

Fields in org.apache.hadoop.mapreduce.lib.input declared as RecordReader

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

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

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

Methods in org.apache.hadoop.mapreduce.lib.input that return RecordReader

Modifier and Type	Method and Description
RecordReader<K,V>	CombineSequenceFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<K,V>	SequenceFileInputFilter.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for the given split
abstract RecordReader<K,V>	CombineFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) This is not implemented yet.
RecordReader<BytesWritable,BytesWritable>	SequenceFileAsBinaryInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<Text,Text>	SequenceFileAsTextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,Text>	TextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<K,V>	SequenceFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,Text>	CombineTextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,BytesWritable>	FixedLengthInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<LongWritable,Text>	NLineInputFormat.createRecordReader(InputSplit genericSplit, TaskAttemptContext context)
RecordReader<Text,Text>	KeyValueTextInputFormat.createRecordReader(InputSplit genericSplit, TaskAttemptContext context)

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

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.

Uses of RecordReader in org.apache.hadoop.mapreduce.lib.join

Subclasses of RecordReader in org.apache.hadoop.mapreduce.lib.join

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.

Methods in org.apache.hadoop.mapreduce.lib.join that return RecordReader

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.