Package org.apache.hadoop.hdfs.server.federation.resolver

Interface FederationNamenodeContext

All Known Implementing Classes:
MembershipState, MembershipStatePBImpl
public interface FederationNamenodeContext
Interface for a discovered NN and its current server endpoints.

  • Method Details

    • getRpcAddress

      String getRpcAddress()
      Get the RPC server address of the namenode.
      Returns:
      RPC server address in the form of host:port.

    • getServiceAddress

      String getServiceAddress()
      Get the Service RPC server address of the namenode.
      Returns:
      Service RPC server address in the form of host:port.

    • getLifelineAddress

      String getLifelineAddress()
      Get the Lifeline RPC server address of the namenode.
      Returns:
      Lifeline RPC server address in the form of host:port.

    • getWebScheme

      String getWebScheme()
      Get the Scheme of web address of the namenode.
      Returns:
      Scheme of web address (HTTP/HTTPS).

    • getWebAddress

      String getWebAddress()
      Get the HTTP(s) server address of the namenode.
      Returns:
      HTTP(s) address in the form of host:port.

    • getNamenodeKey

      String getNamenodeKey()
      Get the unique key representing the namenode.
      Returns:
      Combination of the nameservice and the namenode IDs.

    • getNameserviceId

      String getNameserviceId()
      Identifier for the nameservice/namespace.
      Returns:
      Namenode nameservice identifier.

    • getNamenodeId

      String getNamenodeId()
      Identifier for the namenode.
      Returns:
      String

    • getState

      FederationNamenodeServiceState getState()
      The current state of the namenode (active, standby, etc).
      Returns:
      FederationNamenodeServiceState State of the namenode.

    • getDateModified

      long getDateModified()
      The update date.
      Returns:
      Long with the update date.