org.apache.tez.runtime.library.common.readers

Class UnorderedKVReader<K,V>

java.lang.Object

org.apache.tez.runtime.api.Reader

org.apache.tez.runtime.library.api.KeyValueReader

org.apache.tez.runtime.library.common.readers.UnorderedKVReader<K,V>

@InterfaceStability.Unstable
@InterfaceAudience.Private
public class UnorderedKVReader<K,V>
extends KeyValueReader

Constructor Summary

Constructors

Constructor and Description
UnorderedKVReader(ShuffleManager shuffleManager, org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.io.compress.CompressionCodec codec, boolean ifileReadAhead, int ifileReadAheadLength, int ifileBufferSize, org.apache.tez.common.counters.TezCounter inputRecordCounter)

Method Summary

Methods

Modifier and Type	Method and Description
Object	getCurrentKey() Returns the current key
Object	getCurrentValue() Returns the current value
boolean	next() Moves to the next key/values(s) pair
IFile.Reader	openIFileReader(FetchedInput fetchedInput)

Methods inherited from class java.lang.Object

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

Constructor Detail

UnorderedKVReader

public UnorderedKVReader(ShuffleManager shuffleManager,
                 org.apache.hadoop.conf.Configuration conf,
                 org.apache.hadoop.io.compress.CompressionCodec codec,
                 boolean ifileReadAhead,
                 int ifileReadAheadLength,
                 int ifileBufferSize,
                 org.apache.tez.common.counters.TezCounter inputRecordCounter)
                  throws IOException

Throws:

IOException

Method Detail

next

public boolean next()
             throws IOException

Moves to the next key/values(s) pair

Specified by:

next in class KeyValueReader

Returns:

true if another key/value(s) pair exists, false if there are no more.

Throws:

IOException - if an error occurs

getCurrentKey

public Object getCurrentKey()
                     throws IOException

Description copied from class: KeyValueReader

Returns the current key

Specified by:

getCurrentKey in class KeyValueReader

Returns:

the current key

Throws:

IOException

getCurrentValue

public Object getCurrentValue()
                       throws IOException

Description copied from class: KeyValueReader

Returns the current value

Specified by:

getCurrentValue in class KeyValueReader

Returns:

the current value

Throws:

IOException

openIFileReader

public IFile.Reader openIFileReader(FetchedInput fetchedInput)
                             throws IOException

Throws:

IOException