Uses of Interface
org.apache.hadoop.hdfs.server.federation.resolver.FederationNamenodeContext

Packages that use FederationNamenodeContext

Package	Description
org.apache.hadoop.hdfs.server.federation.resolver	The resolver package contains indepedent data resolvers used in HDFS federation.
org.apache.hadoop.hdfs.server.federation.router	The router package includes the core services for a HDFS federation router.
org.apache.hadoop.hdfs.server.federation.router.async	This package contains classes that facilitate asynchronous operations within the Hadoop Distributed File System (HDFS) Federation router.
org.apache.hadoop.hdfs.server.federation.store.records	Contains the abstract definitions of the state store data records.
org.apache.hadoop.hdfs.server.federation.store.records.impl.pb	The protobuf implementations of state store data records defined in the org.apache.hadoop.hdfs.server.federation.store.records package.

Uses of FederationNamenodeContext in org.apache.hadoop.hdfs.server.federation.resolver

Methods in org.apache.hadoop.hdfs.server.federation.resolver that return types with arguments of type FederationNamenodeContext

Modifier and Type	Method	Description
List<? extends FederationNamenodeContext>	ActiveNamenodeResolver.getNamenodesForBlockPoolId(String blockPoolId)	Returns a prioritized list of the most recent cached registration entries for a single block pool ID.
List<? extends FederationNamenodeContext>	MembershipNamenodeResolver.getNamenodesForBlockPoolId(String bpId)
List<? extends FederationNamenodeContext>	ActiveNamenodeResolver.getNamenodesForNameserviceId(String nameserviceId, boolean listObserversFirst)	Returns a prioritized list of the most recent cached registration entries for a single nameservice ID.
List<? extends FederationNamenodeContext>	MembershipNamenodeResolver.getNamenodesForNameserviceId(String nsId, boolean listObserversFirst)

Methods in org.apache.hadoop.hdfs.server.federation.resolver with parameters of type FederationNamenodeContext

Modifier and Type	Method	Description
int	NamenodePriorityComparator.compare(FederationNamenodeContext o1, FederationNamenodeContext o2)
void	ActiveNamenodeResolver.rotateCache(String nsId, FederationNamenodeContext namenode, boolean listObserversFirst)	Rotate cache, make the current namenode have the lowest priority, to ensure that the current namenode will not be accessed first next time.
void	MembershipNamenodeResolver.rotateCache(String nsId, FederationNamenodeContext namenode, boolean listObserversFirst)	Rotate cache, make the current namenode have the lowest priority, to ensure that the current namenode will not be accessed first next time.

Uses of FederationNamenodeContext in org.apache.hadoop.hdfs.server.federation.router

Methods in org.apache.hadoop.hdfs.server.federation.router that return types with arguments of type FederationNamenodeContext

Modifier and Type	Method	Description
List<? extends FederationNamenodeContext>	RouterRpcClient.getOrderedNamenodes(String nsId, boolean isObserverRead)	Get a prioritized list of NNs that share the same nameservice ID (in the same namespace).

Methods in org.apache.hadoop.hdfs.server.federation.router with parameters of type FederationNamenodeContext

Modifier and Type	Method	Description
protected void	RouterRpcClient.handleInvokeMethodIOException(FederationNamenodeContext namenode, IOException ioe, RouterRpcClient.ExecutionStatus status, boolean useObserver)	The RPC request to the NameNode throws an exception, handle it according to the type of exception.
protected Object	RouterRpcClient.handlerInvokeException(FederationNamenodeContext namenode, Boolean listObserverFirst, int retryCount, Method method, Object obj, Throwable e, Object[] params)	Handle the exception when an RPC request to the NameNode throws an exception.
protected Object	RouterRpcClient.invoke(FederationNamenodeContext namenode, Boolean listObserverFirst, int retryCount, Method method, Object obj, Object... params)	Invokes a method on the designated object.
protected void	RouterRpcClient.postProcessResult(Method method, RouterRpcClient.ExecutionStatus status, FederationNamenodeContext namenode, String nsId, org.apache.hadoop.hdfs.NameNodeProxiesClient.ProxyAndInfo<?> client)	The RPC request is successfully processed by the NameNode, the NameNode status in the router cache is updated according to the ExecutionStatus.
protected org.apache.hadoop.io.retry.RetryPolicy.RetryAction.RetryDecision	RouterRpcClient.shouldRetry(IOException ioe, int retryCount, String nsId, FederationNamenodeContext namenode, boolean listObserverFirst)	If we should retry the RPC call.

Method parameters in org.apache.hadoop.hdfs.server.federation.router with type arguments of type FederationNamenodeContext

Modifier and Type	Method	Description
protected Object	RouterRpcClient.handlerAllNamenodeFail(List<? extends FederationNamenodeContext> namenodes, Method method, Map<FederationNamenodeContext,IOException> ioes, Object[] params)	All namenodes cannot successfully process the RPC request, throw corresponding exceptions according to the exception type of each namenode.
protected Object	RouterRpcClient.handlerAllNamenodeFail(List<? extends FederationNamenodeContext> namenodes, Method method, Map<FederationNamenodeContext,IOException> ioes, Object[] params)	All namenodes cannot successfully process the RPC request, throw corresponding exceptions according to the exception type of each namenode.
Object	RouterRpcClient.invokeMethod(org.apache.hadoop.security.UserGroupInformation ugi, List<? extends FederationNamenodeContext> namenodes, boolean useObserver, Class<?> protocol, Method method, Object... params)	Invokes a method against the ClientProtocol proxy server.

Uses of FederationNamenodeContext in org.apache.hadoop.hdfs.server.federation.router.async

Methods in org.apache.hadoop.hdfs.server.federation.router.async with parameters of type FederationNamenodeContext

Modifier and Type	Method	Description
protected Object	RouterAsyncRpcClient.invoke(FederationNamenodeContext namenode, Boolean listObserverFirst, int retryCount, Method method, Object obj, Object... params)	Asynchronously invokes a method on a specified NameNode in the context of the given namespace and NameNode information.

Method parameters in org.apache.hadoop.hdfs.server.federation.router.async with type arguments of type FederationNamenodeContext

Modifier and Type	Method	Description
Object	RouterAsyncRpcClient.invokeMethod(org.apache.hadoop.security.UserGroupInformation ugi, List<? extends FederationNamenodeContext> namenodes, boolean useObserver, Class<?> protocol, Method method, Object... params)	Invokes a method against the ClientProtocol proxy server.

Uses of FederationNamenodeContext in org.apache.hadoop.hdfs.server.federation.store.records

Classes in org.apache.hadoop.hdfs.server.federation.store.records that implement FederationNamenodeContext

Modifier and Type	Class	Description
class	MembershipState	Data schema for storing NN registration information in the StateStoreService.

Uses of FederationNamenodeContext in org.apache.hadoop.hdfs.server.federation.store.records.impl.pb

Classes in org.apache.hadoop.hdfs.server.federation.store.records.impl.pb that implement FederationNamenodeContext

Modifier and Type	Class	Description
class	MembershipStatePBImpl	Protobuf implementation of the MembershipState record.