alluxio.master.meta

Class DefaultMetaMaster.State

java.lang.Object

alluxio.master.meta.DefaultMetaMaster.State

All Implemented Interfaces:

Checkpointed, Journaled, JournalEntryIterable

Enclosing class:

DefaultMetaMaster

@NotThreadSafe
public static final class DefaultMetaMaster.State
extends Object
implements Journaled

Journaled state for MetaMaster.

Constructor Summary

Constructors

Constructor and Description
State()

Method Summary

Modifier and Type	Method and Description
void	applyAndJournal(java.util.function.Supplier<JournalContext> ctx, String clusterId)
CheckpointName	getCheckpointName()
String	getClusterID()
CloseableIterator<Journal.JournalEntry>	getJournalEntryIterator()
boolean	processJournalEntry(Journal.JournalEntry entry) Attempts to apply a journal entry.
void	resetState() Resets the object's journaled state.

Methods inherited from class java.lang.Object

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

Methods inherited from interface alluxio.master.journal.Journaled

applyAndJournal, restoreFromCheckpoint, writeToCheckpoint

Constructor Detail

State

public State()

Method Detail

getClusterID

public String getClusterID()

Returns:

the cluster ID

getCheckpointName

public CheckpointName getCheckpointName()

Specified by:

getCheckpointName in interface Checkpointed

Returns:

a name for this checkpointed class

processJournalEntry

public boolean processJournalEntry(Journal.JournalEntry entry)

Description copied from interface: Journaled

Attempts to apply a journal entry.

Specified by:

processJournalEntry in interface Journaled

Parameters:

entry - the entry to apply

Returns:

whether the entry type is supported by this journaled object

applyAndJournal

public void applyAndJournal(java.util.function.Supplier<JournalContext> ctx,
                            String clusterId)

Parameters:

ctx - the journal context

clusterId - the clusterId journal clusterId

resetState

public void resetState()

Description copied from interface: Journaled

Resets the object's journaled state.

Specified by:

resetState in interface Journaled

getJournalEntryIterator

public CloseableIterator<Journal.JournalEntry> getJournalEntryIterator()

Specified by:

getJournalEntryIterator in interface JournalEntryIterable

Returns:

an CloseableIterator that iterates all the journal entries