Package 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.log file with the format: 'repoSize, reclaimedSize, timestamp, gc generation, gc full generation (since Oak 1.8), number of nodes compacted, root id (since Oak 1.8)'.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GCJournal.GCJournalEntry

Constructor Summary

Constructors

Constructor	Description
GCJournal(@NotNull GCJournalFile journalFile)

Method Summary

Modifier and Type	Method	Description
void	persist(long reclaimedSize, long repoSize, @NotNull GCGeneration gcGeneration, long nodes, @NotNull String root)	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

Constructor Details

GCJournal

public GCJournal(@NotNull
 @NotNull GCJournalFile journalFile)

Method Details

persist

public void persist(long reclaimedSize,
 long repoSize,
 @NotNull
 @NotNull GCGeneration gcGeneration,
 long nodes,
 @NotNull
 @NotNull String root)

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

root - record id of the compacted root node

read

public GCJournal.GCJournalEntry read()

Returns the latest entry available

readAll

public Collection<GCJournal.GCJournalEntry> readAll()

Returns all available entries from the journal