Package org.apache.hadoop.yarn.server.federation.policies

Interface ConfigurableFederationPolicy

All Known Subinterfaces:

FederationAMRMProxyPolicy, FederationRouterPolicy

All Known Implementing Classes:

AbstractAMRMProxyPolicy, AbstractConfigurableFederationPolicy, AbstractRouterPolicy, BroadcastAMRMProxyPolicy, HashBasedRouterPolicy, HomeAMRMProxyPolicy, LoadBasedRouterPolicy, LocalityMulticastAMRMProxyPolicy, LocalityRouterPolicy, PriorityRouterPolicy, RejectAMRMProxyPolicy, RejectRouterPolicy, UniformRandomRouterPolicy, WeightedRandomRouterPolicy

public interface ConfigurableFederationPolicy

This interface provides a general method to reinitialize a policy. The semantics are try-n-swap, so in case of an exception is thrown the implementation must ensure the previous state and configuration is preserved.

Method Summary

Modifier and Type	Method	Description
void	reinitialize(FederationPolicyInitializationContext policyContext)	This method is invoked to initialize of update the configuration of policies.

Method Detail

reinitialize

void reinitialize(FederationPolicyInitializationContext policyContext)
           throws FederationPolicyInitializationException

This method is invoked to initialize of update the configuration of policies. The implementor should provide try-n-swap semantics, and retain state if possible.

Parameters:

policyContext - the new context to provide to implementor.

Throws:

FederationPolicyInitializationException - in case the initialization fails.