alluxio.master.meta

Interface MetaMaster

All Superinterfaces:

JournalEntryIterable, JournalEntryStateMachine, Master, Server<Boolean>

All Known Implementing Classes:

DefaultMetaMaster

public interface MetaMaster
extends Master

The interface of meta master.

Method Summary

Modifier and Type	Method and Description
BackupResponse	backup(BackupOptions options) Backs up the master.
ConfigCheckReport	getConfigCheckReport()
List<ConfigProperty>	getConfiguration(GetConfigurationOptions options)
List<Address>	getMasterAddresses()
long	getMasterId(Address address) Returns a master id for the given master, creating one if the master is new.
InetSocketAddress	getRpcAddress()
long	getStartTimeMs()
long	getUptimeMs()
int	getWebPort()
List<Address>	getWorkerAddresses()
boolean	isInSafeMode()
MetaCommand	masterHeartbeat(long masterId) A standby master periodically heartbeats with the leader master.
void	masterRegister(long masterId, RegisterMasterTOptions options) A standby master registers with the leader master.

Methods inherited from interface alluxio.master.Master

createJournalContext

Methods inherited from interface alluxio.master.journal.JournalEntryStateMachine

getName, processJournalEntry, resetState

Methods inherited from interface alluxio.master.journal.JournalEntryIterable

getJournalEntryIterator

Methods inherited from interface alluxio.Server

getDependencies, getName, getServices, start, stop

Method Detail

backup

BackupResponse backup(BackupOptions options)
               throws IOException

Backs up the master.

Parameters:

options - method options

Returns:

the uri of the created backup

Throws:

IOException

getConfigCheckReport

ConfigCheckReport getConfigCheckReport()

Returns:

the server-side configuration checker report

getConfiguration

List<ConfigProperty> getConfiguration(GetConfigurationOptions options)

Parameters:

options - method options

Returns:

configuration information list

getMasterAddresses

List<Address> getMasterAddresses()

Returns:

the addresses of live masters

getMasterId

long getMasterId(Address address)

Returns a master id for the given master, creating one if the master is new.

Parameters:

address - the master hostname

Returns:

the master id for this master

getRpcAddress

InetSocketAddress getRpcAddress()

Returns:

this master's rpc address

getStartTimeMs

long getStartTimeMs()

Returns:

the start time of the master in milliseconds

getUptimeMs

long getUptimeMs()

Returns:

the uptime of the master in milliseconds

getWebPort

int getWebPort()

Returns:

the master's web port

getWorkerAddresses

List<Address> getWorkerAddresses()

Returns:

the addresses of live workers

isInSafeMode

boolean isInSafeMode()

Returns:

true if Alluxio is running in safe mode, false otherwise

masterHeartbeat

MetaCommand masterHeartbeat(long masterId)

A standby master periodically heartbeats with the leader master.

Parameters:

masterId - the master id

Returns:

an optional command for the standby master to execute

masterRegister

void masterRegister(long masterId,
                    RegisterMasterTOptions options)
             throws NotFoundException

A standby master registers with the leader master.

Parameters:

masterId - the master id of the standby master registering

options - the options that contains master configuration

Throws:

NotFoundException - if masterId cannot be found