org.apache.flink.api.java.hadoop.mapred

Class HadoopInputFormatBase<K,V,T>

java.lang.Object

org.apache.flink.api.java.hadoop.mapred.HadoopInputFormatBase<K,V,T>

All Implemented Interfaces:

Serializable, InputFormat<T,HadoopInputSplit>, InputSplitSource<HadoopInputSplit>

Direct Known Subclasses:

HadoopInputFormat

public abstract class HadoopInputFormatBase<K,V,T>
extends Object
implements InputFormat<T,HadoopInputSplit>

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	fetched
protected boolean	hasNext
protected K	key
protected Class<K>	keyClass
protected V	value
protected Class<V>	valueClass

Constructor Summary

Constructors

Constructor and Description
HadoopInputFormatBase(org.apache.hadoop.mapred.InputFormat<K,V> mapredInputFormat, Class<K> key, Class<V> value, org.apache.hadoop.mapred.JobConf job)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	configure(Configuration parameters)
HadoopInputSplit[]	createInputSplits(int minNumSplits)
protected void	fetchNext()
InputSplitAssigner	getInputSplitAssigner(HadoopInputSplit[] inputSplits)
org.apache.hadoop.mapred.JobConf	getJobConf()
BaseStatistics	getStatistics(BaseStatistics cachedStats)
void	open(HadoopInputSplit split)
boolean	reachedEnd()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.api.common.io.InputFormat

nextRecord

Field Detail

keyClass

protected Class<K> keyClass

valueClass

protected Class<V> valueClass

key

protected transient K key

value

protected transient V value

fetched

protected transient boolean fetched

hasNext

protected transient boolean hasNext

Constructor Detail

HadoopInputFormatBase

public HadoopInputFormatBase(org.apache.hadoop.mapred.InputFormat<K,V> mapredInputFormat,
                     Class<K> key,
                     Class<V> value,
                     org.apache.hadoop.mapred.JobConf job)

Method Detail

getJobConf

public org.apache.hadoop.mapred.JobConf getJobConf()

configure

public void configure(Configuration parameters)

Specified by:

configure in interface InputFormat<T,HadoopInputSplit>

getStatistics

public BaseStatistics getStatistics(BaseStatistics cachedStats)
                             throws IOException

Specified by:

getStatistics in interface InputFormat<T,HadoopInputSplit>

Throws:

IOException

createInputSplits

public HadoopInputSplit[] createInputSplits(int minNumSplits)
                                     throws IOException

Specified by:

createInputSplits in interface InputFormat<T,HadoopInputSplit>

Specified by:

createInputSplits in interface InputSplitSource<HadoopInputSplit>

Throws:

IOException

getInputSplitAssigner

public InputSplitAssigner getInputSplitAssigner(HadoopInputSplit[] inputSplits)

Specified by:

getInputSplitAssigner in interface InputFormat<T,HadoopInputSplit>

Specified by:

getInputSplitAssigner in interface InputSplitSource<HadoopInputSplit>

open

public void open(HadoopInputSplit split)
          throws IOException

Specified by:

open in interface InputFormat<T,HadoopInputSplit>

Throws:

IOException

reachedEnd

public boolean reachedEnd()
                   throws IOException

Specified by:

reachedEnd in interface InputFormat<T,HadoopInputSplit>

Throws:

IOException

fetchNext

protected void fetchNext()
                  throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface InputFormat<T,HadoopInputSplit>

Throws:

IOException