org.apache.hadoop.yarn.api.protocolrecords
Interface AllocateResponse

All Known Implementing Classes:

AllocateResponsePBImpl

@InterfaceAudience.Public
@InterfaceStability.Stable
public interface AllocateResponse

The response sent by the ResourceManager the ApplicationMaster during resource negotiation.

The response, via AMResponse, includes:

• Response ID to track duplicate responses.
• A reboot flag to let the ApplicationMaster know that its horribly out of sync and needs to reboot.
• A list of newly allocated Container.
• A list of completed Container.
• The available headroom for resources in the cluster for the application.

See Also:

AMRMProtocol.allocate(AllocateRequest)

Method Summary

AMResponse	getAMResponse() Get the AMResponse sent by the ResourceManager.
int	getNumClusterNodes() Get the number of hosts available on the cluster.
void	setAMResponse(AMResponse amResponse)
void	setNumClusterNodes(int numNodes)

Method Detail

getAMResponse

@InterfaceAudience.Public
@InterfaceStability.Stable
AMResponse getAMResponse()

Get the AMResponse sent by the ResourceManager.

Returns:

AMResponse sent by the ResourceManager

setAMResponse

@InterfaceAudience.Private
@InterfaceStability.Unstable
void setAMResponse(AMResponse amResponse)

getNumClusterNodes

@InterfaceAudience.Public
@InterfaceStability.Stable
int getNumClusterNodes()

Get the number of hosts available on the cluster.

Returns:

the available host count.

setNumClusterNodes

@InterfaceAudience.Private
@InterfaceStability.Unstable
void setNumClusterNodes(int numNodes)