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

Packages that use RecordReader

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

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

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

RecordReader<K,V>

CombineFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)

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

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

protected class

DBInputFormat.DBRecordReader A RecordReader that reads records from a SQL table.

Uses of RecordReader in org.apache.hadoop.mapreduce

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

abstract RecordReader<K,V>

InputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for a given split.

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

static <K1,V1,K2,V2> Mapper.Context

ContextFactory.cloneMapContext(MapContext<K1,V1,K2,V2> context, org.apache.hadoop.conf.Configuration conf, RecordReader<K1,V1> reader, RecordWriter<K2,V2> writer) Copy a custom WrappedMapper.Context, optionally replacing the input and output.

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

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

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

protected RecordReader<org.apache.hadoop.io.LongWritable,T>	DBInputFormat.createDBRecordReader(DBInputFormat.DBInputSplit split, org.apache.hadoop.conf.Configuration conf)
protected RecordReader<org.apache.hadoop.io.LongWritable,T>	DataDrivenDBInputFormat.createDBRecordReader(DBInputFormat.DBInputSplit split, org.apache.hadoop.conf.Configuration conf)
protected RecordReader<org.apache.hadoop.io.LongWritable,T>	OracleDataDrivenDBInputFormat.createDBRecordReader(DBInputFormat.DBInputSplit split, org.apache.hadoop.conf.Configuration conf)
RecordReader<org.apache.hadoop.io.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

class	CombineFileRecordReader<K,V> A generic RecordReader that can hand out different recordReaders for each chunk in a CombineFileSplit.
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 SequenceFiles.

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

protected RecordReader<K,V>

CombineFileRecordReader.curReader

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

protected Constructor<? extends RecordReader<K,V>>

CombineFileRecordReader.rrConstructor

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

RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>	NLineInputFormat.createRecordReader(InputSplit genericSplit, TaskAttemptContext context)
RecordReader<K,V>	SequenceFileInputFilter.createRecordReader(InputSplit split, TaskAttemptContext context) Create a record reader for the given split
RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>	KeyValueTextInputFormat.createRecordReader(InputSplit genericSplit, TaskAttemptContext context)
RecordReader<K,V>	SequenceFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>	TextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<K,V>	DelegatingInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
RecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>	SequenceFileAsTextInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)
abstract RecordReader<K,V>	CombineFileInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context) This is not implemented yet.
RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>	SequenceFileAsBinaryInputFormat.createRecordReader(InputSplit split, TaskAttemptContext context)

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

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

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

RecordReader<K,TupleWritable>

CompositeInputFormat.createRecordReader(InputSplit split, TaskAttemptContext taskContext) Construct a CompositeRecordReader for the children of this InputFormat as defined in the init expression.

Uses of RecordReader in org.apache.hadoop.mapreduce.task

Constructors in org.apache.hadoop.mapreduce.task with parameters of type RecordReader

MapContextImpl(org.apache.hadoop.conf.Configuration conf, TaskAttemptID taskid, RecordReader<KEYIN,VALUEIN> reader, RecordWriter<KEYOUT,VALUEOUT> writer, OutputCommitter committer, StatusReporter reporter, InputSplit split)