org.apache.jackrabbit.oak.segment.file

Class GCJournal

java.lang.Object

org.apache.jackrabbit.oak.segment.file.GCJournal

public class GCJournal
extends Object

Persists the repository size and the reclaimed size following a cleanup operation in the gc journal file with the format: 'repoSize, reclaimedSize, timestamp, gcGen, nodes compacted'.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GCJournal.GCJournalEntry

Field Summary

Fields

Modifier and Type	Field and Description
static String	GC_JOURNAL

Constructor Summary

Constructors

Constructor and Description
GCJournal(File directory)

Method Summary

Modifier and Type	Method and Description
void	persist(long reclaimedSize, long repoSize, int gcGeneration, long nodes) Persists the repository stats (current size, reclaimed size, gc generation, number of compacted nodes) following a cleanup operation for a successful compaction.
GCJournal.GCJournalEntry	read() Returns the latest entry available
Collection<GCJournal.GCJournalEntry>	readAll() Returns all available entries from the journal

Methods inherited from class java.lang.Object

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

Field Detail

GC_JOURNAL

public static final String GC_JOURNAL

See Also:

Constant Field Values

Constructor Detail

GCJournal

public GCJournal(@Nonnull
                 File directory)

Method Detail

persist

public void persist(long reclaimedSize,
                    long repoSize,
                    int gcGeneration,
                    long nodes)

Persists the repository stats (current size, reclaimed size, gc generation, number of compacted nodes) following a cleanup operation for a successful compaction. NOOP if the gcGeneration is the same as the one persisted previously.

Parameters:

reclaimedSize - size reclaimed by cleanup

repoSize - current repo size

gcGeneration - gc generation

nodes - number of compacted nodes

read

public GCJournal.GCJournalEntry read()

Returns the latest entry available

readAll

public Collection<GCJournal.GCJournalEntry> readAll()

Returns all available entries from the journal