org.apache.hadoop.mapred.join
Interface ComposableInputFormat<K extends WritableComparable,V extends Writable>

All Superinterfaces:
InputFormat<K,V>
All Known Implementing Classes:
CompositeInputFormat, Parser.Node

@InterfaceAudience.Public
@InterfaceStability.Stable
public interface ComposableInputFormat<K extends WritableComparable,V extends Writable>
extends InputFormat<K,V>

Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.


Method Summary
 ComposableRecordReader<K,V> getRecordReader(InputSplit split, JobConf job, Reporter reporter)
          Get the RecordReader for the given InputSplit.
 
Methods inherited from interface org.apache.hadoop.mapred.InputFormat
getSplits
 

Method Detail

getRecordReader

ComposableRecordReader<K,V> getRecordReader(InputSplit split,
                                            JobConf job,
                                            Reporter reporter)
                                                                                        throws IOException
Description copied from interface: InputFormat
Get the RecordReader for the given InputSplit.

It is the responsibility of the RecordReader to respect record boundaries while processing the logical split to present a record-oriented view to the individual task.

Specified by:
getRecordReader in interface InputFormat<K extends WritableComparable,V extends Writable>
Parameters:
split - the InputSplit
job - the job that this split belongs to
Returns:
a RecordReader
Throws:
IOException


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