alluxio.master.file.meta

Class UfsSyncUtils

java.lang.Object

alluxio.master.file.meta.UfsSyncUtils

@NotThreadSafe
public final class UfsSyncUtils
extends Object

Util methods for UFS sync.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UfsSyncUtils.SyncPlan A class describing how to sync an inode with the ufs.

Method Summary

Modifier and Type	Method and Description
static UfsSyncUtils.SyncPlan	computeSyncPlan(Inode inode, Fingerprint ufsFingerprint, boolean containsMountPoint) Given an inode and ufs status, returns a sync plan describing how to sync the inode with the ufs.
static boolean	inodeUfsIsContentSynced(Inode inode, Fingerprint inodeFingerprint, Fingerprint ufsFingerprint) Returns true if the given inode's content is synced with the ufs status.
static boolean	inodeUfsIsMetadataSynced(Inode inode, Fingerprint inodeFingerprint, Fingerprint ufsFingerprint) Returns true if the given inode's metadata matches the ufs fingerprint.

Methods inherited from class java.lang.Object

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

Method Detail

computeSyncPlan

public static UfsSyncUtils.SyncPlan computeSyncPlan(Inode inode,
                                                    Fingerprint ufsFingerprint,
                                                    boolean containsMountPoint)

Given an inode and ufs status, returns a sync plan describing how to sync the inode with the ufs.

Parameters:

inode - the inode to sync

ufsFingerprint - the ufs fingerprint to check for the sync

containsMountPoint - true if this inode contains a mount point, false otherwise

Returns:

a UfsSyncUtils.SyncPlan describing how to sync the inode with the ufs

inodeUfsIsContentSynced

public static boolean inodeUfsIsContentSynced(Inode inode,
                                              Fingerprint inodeFingerprint,
                                              Fingerprint ufsFingerprint)

Returns true if the given inode's content is synced with the ufs status. This is a single inode check, so for directory inodes, this does not consider the children inodes.

Parameters:

inode - the inode to check for sync

inodeFingerprint - the inode's parsed fingerprint

ufsFingerprint - the ufs fingerprint to check for the sync

Returns:

true of the inode is synced with the ufs status

inodeUfsIsMetadataSynced

public static boolean inodeUfsIsMetadataSynced(Inode inode,
                                               Fingerprint inodeFingerprint,
                                               Fingerprint ufsFingerprint)

Returns true if the given inode's metadata matches the ufs fingerprint.

Parameters:

inode - the inode to check for sync

inodeFingerprint - the inode's parsed fingerprint

ufsFingerprint - the ufs fingerprint to check for the sync

Returns:

true of the inode is synced with the ufs status