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

类 HadoopInputFormatBase<K,V,T>

java.lang.Object

org.apache.flink.api.common.io.RichInputFormat<T,SPITTYPE>

org.apache.flink.api.java.hadoop.common.HadoopInputFormatCommonBase<T,HadoopInputSplit>

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

类型参数:

K - Type of key

V - Type of value

T - The type itself

所有已实现的接口:

Serializable, org.apache.flink.api.common.io.InputFormat<T,HadoopInputSplit>, org.apache.flink.core.io.InputSplitSource<HadoopInputSplit>

直接已知子类:

HadoopInputFormat

@Internal
public abstract class HadoopInputFormatBase<K,V,T>
extends HadoopInputFormatCommonBase<T,HadoopInputSplit>

Common base for Java and Scala API for using Hadoop input formats with Flink.

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
protected boolean	fetched
protected boolean	hasNext
protected K	key
protected Class<K>	keyClass
protected V	value
protected Class<V>	valueClass

从类继承的字段 org.apache.flink.api.java.hadoop.common.HadoopInputFormatCommonBase

credentials

构造器概要

构造器

构造器和说明
HadoopInputFormatBase(org.apache.hadoop.mapred.InputFormat<K,V> mapredInputFormat, Class<K> key, Class<V> value, org.apache.hadoop.mapred.JobConf job)

方法概要

限定符和类型	方法和说明
void	close()
void	configure(org.apache.flink.configuration.Configuration parameters)
HadoopInputSplit[]	createInputSplits(int minNumSplits)
protected void	fetchNext()
org.apache.flink.core.io.InputSplitAssigner	getInputSplitAssigner(HadoopInputSplit[] inputSplits)
org.apache.hadoop.mapred.JobConf	getJobConf()
org.apache.flink.api.common.io.statistics.BaseStatistics	getStatistics(org.apache.flink.api.common.io.statistics.BaseStatistics cachedStats)
void	open(HadoopInputSplit split)
boolean	reachedEnd()

从类继承的方法 org.apache.flink.api.java.hadoop.common.HadoopInputFormatCommonBase

getCredentialsFromUGI, read, write

从类继承的方法 org.apache.flink.api.common.io.RichInputFormat

closeInputFormat, getRuntimeContext, openInputFormat, setRuntimeContext

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.api.common.io.InputFormat

nextRecord

字段详细资料

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

构造器详细资料

HadoopInputFormatBase

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

方法详细资料

getJobConf

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

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

getStatistics

public org.apache.flink.api.common.io.statistics.BaseStatistics getStatistics(org.apache.flink.api.common.io.statistics.BaseStatistics cachedStats)
                                                                       throws IOException

抛出:

IOException

createInputSplits

public HadoopInputSplit[] createInputSplits(int minNumSplits)
                                     throws IOException

抛出:

IOException

getInputSplitAssigner

public org.apache.flink.core.io.InputSplitAssigner getInputSplitAssigner(HadoopInputSplit[] inputSplits)

open

public void open(HadoopInputSplit split)
          throws IOException

抛出:

IOException

reachedEnd

public boolean reachedEnd()
                   throws IOException

抛出:

IOException

fetchNext

protected void fetchNext()
                  throws IOException

抛出:

IOException

close

public void close()
           throws IOException

抛出:

IOException