alluxio.master

Interface Master

All Superinterfaces:

Checkpointed, Journaled, JournalEntryIterable, Server<Boolean>

All Known Subinterfaces:

BlockMaster, FileSystemMaster, JournalMaster, MetaMaster, MetricsMaster, TableMaster

All Known Implementing Classes:

AbstractMaster, CoreMaster, DefaultBlockMaster, DefaultFileSystemMaster, DefaultJournalMaster, DefaultMetaMaster, DefaultMetricsMaster, DefaultTableMaster, DefaultThrottleMaster, JobMaster, NoopMaster

public interface Master
extends Journaled, Server<Boolean>

This interface contains common operations for all masters.

Method Summary

Modifier and Type	Method and Description
JournalContext	createJournalContext()
MasterContext	getMasterContext()
default Map<ServiceType,GrpcService>	getStandbyServices()

Methods inherited from interface alluxio.master.journal.Journaled

applyAndJournal, processJournalEntry, resetState, restoreFromCheckpoint, writeToCheckpoint

Methods inherited from interface alluxio.master.journal.checkpoint.Checkpointed

getCheckpointName

Methods inherited from interface alluxio.master.journal.JournalEntryIterable

getJournalEntryIterator

Methods inherited from interface alluxio.Server

close, getDependencies, getName, getServices, start, stop

Method Detail

createJournalContext

JournalContext createJournalContext()
                             throws UnavailableException

Returns:

a journal context for writing journal entries to the master

Throws:

UnavailableException

getMasterContext

MasterContext getMasterContext()

Returns:

a master context

getStandbyServices

default Map<ServiceType,GrpcService> getStandbyServices()

Returns:

a map from service names to gRPC services that serve RPCs for this master, if the master is a standby master.