alluxio.worker.block.annotator

Class LRFUAnnotator

java.lang.Object

alluxio.worker.block.annotator.LRFUAnnotator

All Implemented Interfaces:

BlockAnnotator<LRFUAnnotator.LRFUSortedField>

public class LRFUAnnotator
extends Object
implements BlockAnnotator<LRFUAnnotator.LRFUSortedField>

BlockAnnotator implementation of LRFU scheme.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	LRFUAnnotator.LRFUSortedField Sorted-field for LRFU.

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

BlockAnnotator.Factory

Constructor Summary

Constructors

Constructor and Description
LRFUAnnotator() Creates a new LRFU annotator.

Method Summary

Modifier and Type	Method and Description
boolean	isOnlineSorter() LRFU is an offline scheme.
BlockSortedField	updateSortedField(long blockId, LRFUAnnotator.LRFUSortedField oldValue) Used to get a new sorted-field for the given block at the current logical time.
void	updateSortedFields(List<Pair<Long,LRFUAnnotator.LRFUSortedField>> blockList) 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

LRFUAnnotator

public LRFUAnnotator()

Creates a new LRFU annotator.

Method Detail

updateSortedField

public BlockSortedField updateSortedField(long blockId,
                                          LRFUAnnotator.LRFUSortedField 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<LRFUAnnotator.LRFUSortedField>

Parameters:

blockId - block Id

oldValue - old sorted-field value

Returns:

the new sorted-field value

updateSortedFields

public void updateSortedFields(List<Pair<Long,LRFUAnnotator.LRFUSortedField>> blockList)

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<LRFUAnnotator.LRFUSortedField>

Parameters:

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

isOnlineSorter

public boolean isOnlineSorter()

LRFU is an offline scheme.

Specified by:

isOnlineSorter in interface BlockAnnotator<LRFUAnnotator.LRFUSortedField>

Returns:

false