org.apache.carbondata.hadoop

Class CarbonRecordReader<T>

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<Void,T>

org.apache.carbondata.hadoop.CarbonRecordReader<T>

All Implemented Interfaces:

Closeable, AutoCloseable

public class CarbonRecordReader<T>
extends org.apache.hadoop.mapreduce.RecordReader<Void,T>

Reads the data from Carbon store.

Constructor Summary

Constructors

Constructor and Description
CarbonRecordReader(QueryModel queryModel, CarbonReadSupport<T> readSupport)

Method Summary

Modifier and Type	Method and Description
void	close()
Void	getCurrentKey()
T	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

Constructor Detail

CarbonRecordReader

public CarbonRecordReader(QueryModel queryModel,
                          CarbonReadSupport<T> readSupport)

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<Void,T>

Throws:

IOException

InterruptedException

nextKeyValue

public boolean nextKeyValue()

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<Void,T>

getCurrentKey

public Void getCurrentKey()
                   throws IOException,
                          InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<Void,T>

Throws:

IOException

InterruptedException

getCurrentValue

public T getCurrentValue()
                  throws IOException,
                         InterruptedException

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<Void,T>

Throws:

IOException

InterruptedException

getProgress

public float getProgress()
                  throws IOException,
                         InterruptedException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<Void,T>

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<Void,T>

Throws:

IOException