alluxio.master

Class LocalAlluxioMaster

java.lang.Object

alluxio.master.LocalAlluxioMaster

@NotThreadSafe
public final class LocalAlluxioMaster
extends Object

Constructs an isolated master. Primary users of this class are the LocalAlluxioCluster and MultiMasterLocalAlluxioCluster. Isolated is defined as having its own root directory, and port.

Method Summary

Methods

Modifier and Type	Method and Description
void	clearClients() Clears all the clients.
static LocalAlluxioMaster	create() Creates a new local Alluxio master with an isolated work directory and port.
static LocalAlluxioMaster	create(String workDirectory) Creates a new local Alluxio master with a isolated port.
InetSocketAddress	getAddress()
FileSystem	getClient()
AlluxioMaster	getInternalMaster()
String	getJournalFolder()
String	getRPCBindHost() Gets the actual bind hostname on RPC service (used by unit test only).
int	getRPCLocalPort() Gets the actual port that the RPC service is listening on (used by unit test only).
String	getUri()
String	getWebBindHost() Gets the actual bind hostname on web service (used by unit test only).
int	getWebLocalPort() Gets the actual port that the web service is listening on (used by unit test only).
boolean	isServing()
void	kill() Kills the master thread, by calling Thread.interrupt().
void	start() Starts the master.
void	stop() Stops the master and cleans up client connections.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static LocalAlluxioMaster create()
                                 throws IOException

Creates a new local Alluxio master with an isolated work directory and port.

Returns:

an instance of Alluxio master

Throws:

IOException - when unable to do file operation or listen on port

create

public static LocalAlluxioMaster create(String workDirectory)
                                 throws IOException

Creates a new local Alluxio master with a isolated port.

Parameters:

workDirectory - Alluxio work directory, this method will create it if it doesn't exist yet

Returns:

the created Alluxio master

Throws:

IOException - when unable to do file operation or listen on port

start

public void start()

Starts the master.

isServing

public boolean isServing()

Returns:

true if the master is serving, false otherwise

stop

public void stop()
          throws Exception

Stops the master and cleans up client connections.

Throws:

Exception - when the operation fails

kill

public void kill()
          throws Exception

Kills the master thread, by calling Thread.interrupt().

Throws:

Exception - if master thread cannot be interrupted

clearClients

public void clearClients()
                  throws IOException

Clears all the clients.

Throws:

IOException - if the client pool cannot be closed

getAddress

public InetSocketAddress getAddress()

Returns:

the externally resolvable address of the master (used by unit test only)

getInternalMaster

public AlluxioMaster getInternalMaster()

Returns:

the internal AlluxioMaster

getRPCBindHost

public String getRPCBindHost()

Gets the actual bind hostname on RPC service (used by unit test only).

Returns:

the RPC bind hostname

getRPCLocalPort

public int getRPCLocalPort()

Gets the actual port that the RPC service is listening on (used by unit test only).

Returns:

the RPC local port

getWebBindHost

public String getWebBindHost()

Gets the actual bind hostname on web service (used by unit test only).

Returns:

the Web bind hostname

getWebLocalPort

public int getWebLocalPort()

Gets the actual port that the web service is listening on (used by unit test only).

Returns:

the Web local port

getUri

public String getUri()

Returns:

the URI of the master

getClient

public FileSystem getClient()
                     throws IOException

Returns:

the client from the pool

Throws:

IOException - if the client cannot be retrieved

getJournalFolder

public String getJournalFolder()

Returns:

the folder of the journal