org.apache.hadoop.hive.druid.io

Class DruidVectorizedWrapper<T extends Comparable<T>>

java.lang.Object

org.apache.hadoop.hive.druid.io.DruidVectorizedWrapper<T>

Type Parameters:

T - type of the Druid query.

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,VectorizedRowBatch>

public class DruidVectorizedWrapper<T extends Comparable<T>>
extends Object
implements org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,VectorizedRowBatch>

A Wrapper class that consumes row-by-row from base Druid Record Reader and provides a Vectorized one.

Constructor Summary

Constructors

Constructor and Description
DruidVectorizedWrapper(DruidQueryRecordReader reader, org.apache.hadoop.conf.Configuration jobConf)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

DruidVectorizedWrapper

public DruidVectorizedWrapper(DruidQueryRecordReader reader,
                              org.apache.hadoop.conf.Configuration jobConf)

Method Detail

next

public boolean next(org.apache.hadoop.io.NullWritable nullWritable,
                    VectorizedRowBatch vectorizedRowBatch)
             throws IOException

Specified by:

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

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,VectorizedRowBatch>

createValue

public VectorizedRowBatch createValue()

Specified by:

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

getPos

public long getPos()
            throws IOException

Specified by:

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

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

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

Throws:

IOException

getProgress

public float getProgress()
                  throws IOException

Specified by:

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

Throws:

IOException