org.apache.hadoop.io

接口 SequenceFile.Sorter.RawKeyValueIterator

封闭类:

SequenceFile.Sorter

public static interface SequenceFile.Sorter.RawKeyValueIterator

The interface to iterate over raw keys/values of SequenceFiles.

方法概要

方法

限定符和类型	方法和说明
void	close() closes the iterator so that the underlying streams can be closed
DataOutputBuffer	getKey() Gets the current raw key
Progress	getProgress() Gets the Progress object; this has a float (0.0 - 1.0) indicating the bytes processed by the iterator so far
SequenceFile.ValueBytes	getValue() Gets the current raw value
boolean	next() Sets up the current key and value (for getKey and getValue)

方法详细资料

getKey

DataOutputBuffer getKey()
                        throws IOException

Gets the current raw key

返回:

DataOutputBuffer

抛出:

IOException

getValue

SequenceFile.ValueBytes getValue()
                                 throws IOException

Gets the current raw value

返回:

ValueBytes

抛出:

IOException

next

boolean next()
             throws IOException

Sets up the current key and value (for getKey and getValue)

返回:

true if there exists a key/value, false otherwise

抛出:

IOException

close

void close()
           throws IOException

closes the iterator so that the underlying streams can be closed

抛出:

IOException

getProgress

Progress getProgress()

Gets the Progress object; this has a float (0.0 - 1.0) indicating the bytes processed by the iterator so far