alluxio.client.block.policy

Class SpecificHostPolicy

java.lang.Object

alluxio.client.block.policy.SpecificHostPolicy

All Implemented Interfaces:

BlockLocationPolicy

@ThreadSafe
public final class SpecificHostPolicy
extends Object
implements BlockLocationPolicy

Always returns a worker with the hostname specified by PropertyKey.WORKER_HOSTNAME (alluxio.worker.hostname).

Nested Class Summary

Nested classes/interfaces inherited from interface alluxio.client.block.policy.BlockLocationPolicy

BlockLocationPolicy.Factory

Constructor Summary

Constructors

Constructor and Description
SpecificHostPolicy(AlluxioConfiguration conf) Constructs a new SpecificHostPolicy.
SpecificHostPolicy(String hostname) Constructs the policy with the hostname.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
WorkerNetAddress	getWorker(GetWorkerOptions options) Returns null if no active worker matches the hostname provided in WORKER_HOSTNAME (alluxio.worker.hostname).
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SpecificHostPolicy

public SpecificHostPolicy(AlluxioConfiguration conf)

Constructs a new SpecificHostPolicy.

Parameters:

conf - Alluxio configuration

SpecificHostPolicy

public SpecificHostPolicy(String hostname)

Constructs the policy with the hostname.

Parameters:

hostname - the name of the host

Method Detail

getWorker

public WorkerNetAddress getWorker(GetWorkerOptions options)

Returns null if no active worker matches the hostname provided in WORKER_HOSTNAME (alluxio.worker.hostname).

Specified by:

getWorker in interface BlockLocationPolicy

Parameters:

options - the options to get a block worker network address for a block

Returns:

the address of the worker to write to, null if no worker can be selected

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object