org.apache.carbondata.hadoop

Class CarbonMultiBlockSplit

java.lang.Object

org.apache.hadoop.mapreduce.InputSplit

org.apache.carbondata.hadoop.CarbonMultiBlockSplit

All Implemented Interfaces:

Serializable, org.apache.hadoop.io.Writable

public class CarbonMultiBlockSplit
extends org.apache.hadoop.mapreduce.InputSplit
implements Serializable, org.apache.hadoop.io.Writable

This class wraps multiple blocks belong to a same node to one split. So the scanning task will scan multiple blocks. This is an optimization for concurrent query.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CarbonMultiBlockSplit()
CarbonMultiBlockSplit(List<CarbonInputSplit> splitList, String[] locations)
CarbonMultiBlockSplit(List<CarbonInputSplit> splitList, String[] locations, org.apache.carbondata.core.statusmanager.FileFormat fileFormat)
CarbonMultiBlockSplit(List<org.apache.carbondata.core.datastore.block.Distributable> blocks, String hostname)

Method Summary

Modifier and Type	Method and Description
void	calculateLength()
List<CarbonInputSplit>	getAllSplits() Return all splits for scan
org.apache.carbondata.core.statusmanager.FileFormat	getFileFormat()
long	getLength()
String[]	getLocations()
void	readFields(DataInput in)
void	setFileFormat(org.apache.carbondata.core.statusmanager.FileFormat fileFormat)
void	setLength(long length)
void	write(DataOutput out)

Methods inherited from class org.apache.hadoop.mapreduce.InputSplit

getLocationInfo

Methods inherited from class java.lang.Object

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

Constructor Detail

CarbonMultiBlockSplit

public CarbonMultiBlockSplit()

CarbonMultiBlockSplit

public CarbonMultiBlockSplit(List<org.apache.carbondata.core.datastore.block.Distributable> blocks,
                             String hostname)

CarbonMultiBlockSplit

public CarbonMultiBlockSplit(List<CarbonInputSplit> splitList,
                             String[] locations)

CarbonMultiBlockSplit

public CarbonMultiBlockSplit(List<CarbonInputSplit> splitList,
                             String[] locations,
                             org.apache.carbondata.core.statusmanager.FileFormat fileFormat)

Method Detail

getAllSplits

public List<CarbonInputSplit> getAllSplits()

Return all splits for scan

Returns:

split list for scan

getLength

public long getLength()

Specified by:

getLength in class org.apache.hadoop.mapreduce.InputSplit

setLength

public void setLength(long length)

calculateLength

public void calculateLength()

getLocations

public String[] getLocations()

Specified by:

getLocations in class org.apache.hadoop.mapreduce.InputSplit

write

public void write(DataOutput out)
           throws IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

getFileFormat

public org.apache.carbondata.core.statusmanager.FileFormat getFileFormat()

setFileFormat

public void setFileFormat(org.apache.carbondata.core.statusmanager.FileFormat fileFormat)