org.apache.hadoop.hbase.mapreduce

Class HFileInputFormat.HFileRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

org.apache.hadoop.hbase.mapreduce.HFileInputFormat.HFileRecordReader

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

HFileInputFormat

private static class HFileInputFormat.HFileRecordReader
extends org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Record reader for HFiles.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.hadoop.conf.Configuration	conf
private long	count
private HFile.Reader	in
private HFileScanner	scanner
private boolean	seeked
private Cell	value A private cache of the key value so it doesn't need to be loaded twice from the scanner.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	HFileRecordReader()

Method Summary

Modifier and Type	Method and Description
void	close()
org.apache.hadoop.io.NullWritable	getCurrentKey()
Cell	getCurrentValue()
float	getProgress()
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)
boolean	nextKeyValue()

Methods inherited from class java.lang.Object

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

Field Detail

in

private HFile.Reader in

conf

protected org.apache.hadoop.conf.Configuration conf

scanner

private HFileScanner scanner

value

private Cell value

A private cache of the key value so it doesn't need to be loaded twice from the scanner.

count

private long count

seeked

private boolean seeked

Constructor Detail

HFileRecordReader

private HFileRecordReader()

Method Detail

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.mapreduce.TaskAttemptContext context)
                throws IOException,
                       InterruptedException

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Throws:

IOException

InterruptedException

nextKeyValue

public boolean nextKeyValue()
                     throws IOException,
                            InterruptedException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Throws:

IOException

InterruptedException

getCurrentKey

public org.apache.hadoop.io.NullWritable getCurrentKey()
                                                throws IOException,
                                                       InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Throws:

IOException

InterruptedException

getCurrentValue

public Cell getCurrentValue()
                     throws IOException,
                            InterruptedException

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Throws:

IOException

InterruptedException

getProgress

public float getProgress()
                  throws IOException,
                         InterruptedException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Throws:

IOException

InterruptedException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,Cell>

Throws:

IOException