alluxio.master.selectionpolicy

Interface MasterSelectionPolicy

All Known Implementing Classes:

AbstractMasterSelectionPolicy, SelectionPolicyAnyMaster, SelectionPolicyAnyStandbyMaster, SelectionPolicyPrimaryMaster, SelectionPolicySpecifiedMaster

public interface MasterSelectionPolicy

Interface for master selection policy that determines which master node a client should connect to.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	MasterSelectionPolicy.Factory Factory for MasterSelectionPolicy.
static class	MasterSelectionPolicy.Type The enum for master selection policies.

Method Summary

Modifier and Type	Method and Description
InetSocketAddress	getGrpcMasterAddress(MasterInquireClient masterInquireClient) Gets the master address the client makes gRPC request to.
InetSocketAddress	getPrimaryMasterAddressCached(MasterInquireClient masterInquireClient) Get and cache the primary master address.
MasterSelectionPolicy.Type	getType()
void	resetPrimaryMasterAddressCache() Resets the cached primary master address.

Method Detail

getPrimaryMasterAddressCached

InetSocketAddress getPrimaryMasterAddressCached(MasterInquireClient masterInquireClient)
                                         throws UnavailableException

Get and cache the primary master address.

Parameters:

masterInquireClient - master inquire client

Returns:

the remote address of primary master gRPC server

Throws:

UnavailableException - if address cannot be determined

getGrpcMasterAddress

InetSocketAddress getGrpcMasterAddress(MasterInquireClient masterInquireClient)
                                throws UnavailableException

Gets the master address the client makes gRPC request to.

Parameters:

masterInquireClient - master inquire client

Returns:

the remote address of master gRPC server

Throws:

UnavailableException - if address cannot be determined

resetPrimaryMasterAddressCache

void resetPrimaryMasterAddressCache()

Resets the cached primary master address.

getType

MasterSelectionPolicy.Type getType()

Returns:

the type of the master selection policy