org.apache.jackrabbit.oak.segment.file

Class GCNodeWriteMonitor

java.lang.Object

org.apache.jackrabbit.oak.segment.file.GCNodeWriteMonitor

public class GCNodeWriteMonitor
extends Object

Monitors the compaction cycle and keeps a compacted nodes counter, in order to provide a best effort progress log based on extrapolating the previous size and node count and current size to deduce current node count.

Field Summary

Fields

Modifier and Type	Field and Description
static GCNodeWriteMonitor	EMPTY

Constructor Summary

Constructors

Constructor and Description
GCNodeWriteMonitor(long gcProgressLog)

Method Summary

Modifier and Type	Method and Description
void	compacted()
void	finished()
long	getCompactedNodes() Compacted nodes in current cycle
int	getEstimatedPercentage() Estimated completion percentage.
long	getEstimatedTotal() Estimated nodes to compact in current cycle.
long	getGcProgressLog()
void	init(long gcCount, long prevSize, long prevCompactedNodes, long currentSize)
boolean	isCompactionRunning()
void	setGcProgressLog(long gcProgressLog)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final GCNodeWriteMonitor EMPTY

Constructor Detail

GCNodeWriteMonitor

public GCNodeWriteMonitor(long gcProgressLog)

Method Detail

compacted

public void compacted()

init

public void init(long gcCount,
                 long prevSize,
                 long prevCompactedNodes,
                 long currentSize)

Parameters:

gcCount - current gc run

prevSize - size from latest successful compaction

prevCompactedNodes - number of nodes compacted during latest compaction operation

currentSize - current repository size

finished

public void finished()

getCompactedNodes

public long getCompactedNodes()

Compacted nodes in current cycle

getEstimatedTotal

public long getEstimatedTotal()

Estimated nodes to compact in current cycle. Can be -1 if the estimation could not be performed.

getEstimatedPercentage

public int getEstimatedPercentage()

Estimated completion percentage. Can be -1 if the estimation could not be performed.

isCompactionRunning

public boolean isCompactionRunning()

getGcProgressLog

public long getGcProgressLog()

setGcProgressLog

public void setGcProgressLog(long gcProgressLog)