Package org.apache.cassandra.db.commitlog

Class CommitLogArchiver

java.lang.Object

org.apache.cassandra.db.commitlog.CommitLogArchiver

public class CommitLogArchiver
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
java.util.Map<java.lang.String,java.util.concurrent.Future<?>>	archivePending
static java.text.SimpleDateFormat	format
java.util.concurrent.TimeUnit	precision
long	restorePointInTime
CommitLogPosition	snapshotCommitLogPosition

Constructor Summary

Constructors

Constructor	Description
CommitLogArchiver(java.lang.String archiveCommand, java.lang.String restoreCommand, java.lang.String restoreDirectories, long restorePointInTime, CommitLogPosition snapshotCommitLogPosition, java.util.concurrent.TimeUnit precision)

Method Summary

Modifier and Type	Method	Description
static CommitLogArchiver	construct()
static CommitLogArchiver	disabled()
void	maybeArchive(java.lang.String path, java.lang.String name)	Differs from the above because it can be used on any file, rather than only managed commit log segments (and thus cannot call waitForFinalSync), and in the treatment of failures.
void	maybeArchive(CommitLogSegment segment)
void	maybeRestoreArchive()
boolean	maybeWaitForArchiving(java.lang.String name)

Methods inherited from class java.lang.Object

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

Field Detail

format

public static final java.text.SimpleDateFormat format

archivePending

public final java.util.Map<java.lang.String,java.util.concurrent.Future<?>> archivePending

restorePointInTime

public long restorePointInTime

snapshotCommitLogPosition

public CommitLogPosition snapshotCommitLogPosition

precision

public final java.util.concurrent.TimeUnit precision

Constructor Detail

CommitLogArchiver

public CommitLogArchiver(java.lang.String archiveCommand,
                         java.lang.String restoreCommand,
                         java.lang.String restoreDirectories,
                         long restorePointInTime,
                         CommitLogPosition snapshotCommitLogPosition,
                         java.util.concurrent.TimeUnit precision)

Method Detail

disabled

public static CommitLogArchiver disabled()

construct

public static CommitLogArchiver construct()

maybeArchive

public void maybeArchive(CommitLogSegment segment)

maybeArchive

public void maybeArchive(java.lang.String path,
                         java.lang.String name)

Differs from the above because it can be used on any file, rather than only managed commit log segments (and thus cannot call waitForFinalSync), and in the treatment of failures. Used to archive files present in the commit log directory at startup (CASSANDRA-6904). Since the files being already archived by normal operation could cause subsequent hard-linking or other operations to fail, we should not throw errors on failure

maybeWaitForArchiving

public boolean maybeWaitForArchiving(java.lang.String name)

maybeRestoreArchive

public void maybeRestoreArchive()