org.apache.hudi.hadoop

Class BootstrapColumnStichingRecordReader

java.lang.Object

org.apache.hudi.hadoop.BootstrapColumnStichingRecordReader

All Implemented Interfaces:

org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

public class BootstrapColumnStichingRecordReader
extends Object
implements org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

Stitches 2 record reader returned rows and presents a concatenated view to clients.

Constructor Summary

Constructors

Constructor and Description
BootstrapColumnStichingRecordReader(org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable> left, int numLeftColumns, org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable> right, int numRightColumns, boolean validate)

Method Summary

Modifier and Type	Method and Description
void	close()
org.apache.hadoop.io.NullWritable	createKey()
org.apache.hadoop.io.ArrayWritable	createValue()
long	getPos()
float	getProgress()
boolean	next(org.apache.hadoop.io.NullWritable key, org.apache.hadoop.io.ArrayWritable value)

Methods inherited from class java.lang.Object

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

Constructor Detail

BootstrapColumnStichingRecordReader

public BootstrapColumnStichingRecordReader(org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable> left,
                                           int numLeftColumns,
                                           org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable> right,
                                           int numRightColumns,
                                           boolean validate)

Method Detail

next

public boolean next(org.apache.hadoop.io.NullWritable key,
                    org.apache.hadoop.io.ArrayWritable value)
             throws IOException

Specified by:

next in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

Throws:

IOException

createKey

public org.apache.hadoop.io.NullWritable createKey()

Specified by:

createKey in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

createValue

public org.apache.hadoop.io.ArrayWritable createValue()

Specified by:

createValue in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

getPos

public long getPos()
            throws IOException

Specified by:

getPos in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

Throws:

IOException

getProgress

public float getProgress()
                  throws IOException

Specified by:

getProgress in interface org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.ArrayWritable>

Throws:

IOException