org.apache.drill.exec.physical.impl.sort

Class SortRecordBatchBuilder

java.lang.Object

org.apache.drill.exec.physical.impl.sort.SortRecordBatchBuilder

All Implemented Interfaces:

AutoCloseable

public class SortRecordBatchBuilder
extends Object
implements AutoCloseable

Constructor Summary

Constructors

Constructor and Description
SortRecordBatchBuilder(BufferAllocator a)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(RecordBatchData rbd)
boolean	add(VectorAccessible batch) Add another record batch to the set of record batches.
void	build(FragmentContext context, VectorContainer outputContainer)
void	build(VectorContainer outputContainer)
void	clear()
void	close()
List<VectorContainer>	getHeldRecordBatches()
SelectionVector4	getSv4()
boolean	isEmpty()
static long	memoryNeeded(int recordCount) For given record count, return the memory that SortRecordBatchBuilder needs for its own purpose.

Methods inherited from class java.lang.Object

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

Constructor Detail

SortRecordBatchBuilder

public SortRecordBatchBuilder(BufferAllocator a)

Method Detail

add

public boolean add(VectorAccessible batch)

Add another record batch to the set of record batches. TODO: Refactor this and other (RecordBatchData) method into one method.

Parameters:

batch -

Returns:

True if the requested add completed successfully. Returns false in the case that this builder is full and cannot receive additional packages.

Throws:

SchemaChangeException

add

public void add(RecordBatchData rbd)

isEmpty

public boolean isEmpty()

build

public void build(FragmentContext context,
         VectorContainer outputContainer)
           throws SchemaChangeException

Throws:

SchemaChangeException

build

public void build(VectorContainer outputContainer)
           throws SchemaChangeException

Throws:

SchemaChangeException

getSv4

public SelectionVector4 getSv4()

clear

public void clear()

close

public void close()

Specified by:

close in interface AutoCloseable

getHeldRecordBatches

public List<VectorContainer> getHeldRecordBatches()

memoryNeeded

public static long memoryNeeded(int recordCount)

For given record count, return the memory that SortRecordBatchBuilder needs for its own purpose. This is used in ExternalSortBatch to make decisions about whether to spill or not.

Parameters:

recordCount - expected output record count

Returns:

number of bytes needed for an SV4, power-of-two rounded