alluxio.master

Class MultiMasterLocalAlluxioCluster

java.lang.Object

alluxio.master.AbstractLocalAlluxioCluster

alluxio.master.MultiMasterLocalAlluxioCluster

@NotThreadSafe
public final class MultiMasterLocalAlluxioCluster
extends AbstractLocalAlluxioCluster

A local Alluxio cluster with multiple masters.

Field Summary

Fields inherited from class alluxio.master.AbstractLocalAlluxioCluster

LOG, mHostname, mUfsCluster, mWorkDirectory, mWorkers

Constructor Summary

Constructors

Constructor and Description
MultiMasterLocalAlluxioCluster(int masters) Runs a multi master local Alluxio cluster with a single worker.
MultiMasterLocalAlluxioCluster(int masters, int numWorkers)

Method Summary

Methods

Modifier and Type	Method and Description
FileSystem	getClient() Returns a FileSystem client.
int	getLeaderIndex()
LocalAlluxioMaster	getMaster() Gets the master which should be listening for RPC and Web requests.
String	getUri()
boolean	killLeader() Iterates over the masters in the order of master creation, kill the leader master.
boolean	killStandby() Iterates over the masters in the order of master creation, kill the first standby master.
protected void	startMaster() Configures and starts a master.
protected void	startWorkers() Configures and starts the workers.
void	stopFS() Stops the alluxio filesystem's service thread only.

Methods inherited from class alluxio.master.AbstractLocalAlluxioCluster

initConfiguration, reset, runWorkers, setAlluxioWorkDirectory, setHostname, setupTest, start, stop, stopUFS

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiMasterLocalAlluxioCluster

public MultiMasterLocalAlluxioCluster(int masters)

Runs a multi master local Alluxio cluster with a single worker.

Parameters:

masters - the number masters to run

MultiMasterLocalAlluxioCluster

public MultiMasterLocalAlluxioCluster(int masters,
                              int numWorkers)

Parameters:

masters - the number of masters to run

numWorkers - the number of workers to run

Method Detail

getClient

public FileSystem getClient()
                     throws IOException

Description copied from class: AbstractLocalAlluxioCluster

Returns a FileSystem client.

Specified by:

getClient in class AbstractLocalAlluxioCluster

Returns:

a FileSystem client

Throws:

IOException - when the operation fails

getUri

public String getUri()

Returns:

the URI of the master

getMaster

public LocalAlluxioMaster getMaster()

Description copied from class: AbstractLocalAlluxioCluster

Gets the master which should be listening for RPC and Web requests.

Specified by:

getMaster in class AbstractLocalAlluxioCluster

getLeaderIndex

public int getLeaderIndex()

Returns:

index of leader master in mMasters, or -1 if there is no leader temporarily

killStandby

public boolean killStandby()

Iterates over the masters in the order of master creation, kill the first standby master.

Returns:

true if a standby master is successfully killed, otherwise, false

killLeader

public boolean killLeader()

Iterates over the masters in the order of master creation, kill the leader master.

Returns:

true if the leader master is successfully killed, false otherwise

startWorkers

protected void startWorkers()
                     throws IOException,
                            ConnectionFailedException

Description copied from class: AbstractLocalAlluxioCluster

Configures and starts the workers.

Specified by:

startWorkers in class AbstractLocalAlluxioCluster

Throws:

IOException - if an I/O error occurs

ConnectionFailedException - if network connection failed

startMaster

protected void startMaster()
                    throws IOException

Description copied from class: AbstractLocalAlluxioCluster

Configures and starts a master.

Specified by:

startMaster in class AbstractLocalAlluxioCluster

Throws:

IOException - when the operation fails

stopFS

public void stopFS()
            throws Exception

Description copied from class: AbstractLocalAlluxioCluster

Stops the alluxio filesystem's service thread only.

Specified by:

stopFS in class AbstractLocalAlluxioCluster

Throws:

Exception - when the operation fails