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 static 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()

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()

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