alluxio.worker.block.annotator

Class LRUAnnotator

java.lang.Object

alluxio.worker.block.annotator.LRUAnnotator

All Implemented Interfaces:

BlockAnnotator<LRUAnnotator.LRUSortedField>

public class LRUAnnotator
extends Object
implements BlockAnnotator<LRUAnnotator.LRUSortedField>

BlockAnnotator implementation of LRU scheme.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	LRUAnnotator.LRUSortedField Sorted-field for LRU.

Nested classes/interfaces inherited from interface alluxio.worker.block.annotator.BlockAnnotator

BlockAnnotator.Factory

Constructor Summary

Constructors

Constructor and Description
LRUAnnotator() Creates a new LRU annotator.

Method Summary

Modifier and Type	Method and Description
boolean	isOnlineSorter() LRU is an online scheme.
BlockSortedField	updateSortedField(long blockId, LRUAnnotator.LRUSortedField oldValue) Used to get a new sorted-field for the given block at the current logical time.
void	updateSortedFields(List<Pair<Long,LRUAnnotator.LRUSortedField>> blocks) Updates sorted-field values for all {block-id, sorted-field} pairs at the same logical time.

Methods inherited from class java.lang.Object

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

Constructor Detail

LRUAnnotator

public LRUAnnotator()

Creates a new LRU annotator.

Method Detail

updateSortedField

public BlockSortedField updateSortedField(long blockId,
                                          LRUAnnotator.LRUSortedField oldValue)

Description copied from interface: BlockAnnotator

Used to get a new sorted-field for the given block at the current logical time.

Specified by:

updateSortedField in interface BlockAnnotator<LRUAnnotator.LRUSortedField>

Parameters:

blockId - block Id

oldValue - old sorted-field value

Returns:

the new sorted-field value

updateSortedFields

public void updateSortedFields(List<Pair<Long,LRUAnnotator.LRUSortedField>> blocks)

Description copied from interface: BlockAnnotator

Updates sorted-field values for all {block-id, sorted-field} pairs at the same logical time. Note: Currently not required for online schemes, so not called.

Specified by:

updateSortedFields in interface BlockAnnotator<LRUAnnotator.LRUSortedField>

Parameters:

blocks - list of {block-id, sorted-field} pairs

isOnlineSorter

public boolean isOnlineSorter()

LRU is an online scheme.

Specified by:

isOnlineSorter in interface BlockAnnotator<LRUAnnotator.LRUSortedField>

Returns:

true