org.apache.carbondata.hadoop.readsupport.impl

Class ArrayWritableReadSupport

java.lang.Object

org.apache.carbondata.hadoop.readsupport.impl.ArrayWritableReadSupport

All Implemented Interfaces:

CarbonReadSupport<org.apache.hadoop.io.ArrayWritable>

public class ArrayWritableReadSupport
extends Object
implements CarbonReadSupport<org.apache.hadoop.io.ArrayWritable>

Constructor Summary

Constructors

Constructor and Description
ArrayWritableReadSupport()

Method Summary

Modifier and Type	Method and Description
void	close() This method iwll be used to clear the dictionary cache and update access count for each column involved which will be used during eviction of columns from LRU cache if memory reaches threshold
void	intialize(CarbonColumn[] carbonColumns, AbsoluteTableIdentifier absoluteTableIdentifier) It can use [CarbonColumn] array to create its own schema to create its row.
org.apache.hadoop.io.ArrayWritable	readRow(Object[] data)

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayWritableReadSupport

public ArrayWritableReadSupport()

Method Detail

intialize

public void intialize(CarbonColumn[] carbonColumns,
                      AbsoluteTableIdentifier absoluteTableIdentifier)

Description copied from interface: CarbonReadSupport

It can use [CarbonColumn] array to create its own schema to create its row.

Specified by:

intialize in interface CarbonReadSupport<org.apache.hadoop.io.ArrayWritable>

readRow

public org.apache.hadoop.io.ArrayWritable readRow(Object[] data)

Specified by:

readRow in interface CarbonReadSupport<org.apache.hadoop.io.ArrayWritable>

close

public void close()

This method iwll be used to clear the dictionary cache and update access count for each column involved which will be used during eviction of columns from LRU cache if memory reaches threshold

Specified by:

close in interface CarbonReadSupport<org.apache.hadoop.io.ArrayWritable>