Package org.apache.hadoop.ipc

Interface VersionedProtocol

All Known Subinterfaces:
HAServiceProtocolPB, ZKFCProtocolPB
All Known Implementing Classes:
HAServiceProtocolServerSideTranslatorPB, ZKFCProtocolServerSideTranslatorPB
public interface VersionedProtocol
Superclass of all protocols that use Hadoop RPC. Subclasses of this interface are also supposed to have a static final long versionID field.

  • Method Summary

    Modifier and Type
    Method
    Description
    ProtocolSignature
    getProtocolSignature(String protocol, long clientVersion, int clientMethodsHash)
    Return protocol version corresponding to protocol interface.
    long
    getProtocolVersion(String protocol, long clientVersion)
    Return protocol version corresponding to protocol interface.

  • Method Details

    • getProtocolVersion

      long getProtocolVersion(String protocol, long clientVersion) throws IOException
      Return protocol version corresponding to protocol interface.
      Parameters:
      protocol - The classname of the protocol interface
      clientVersion - The version of the protocol that the client speaks
      Returns:
      the version that the server will speak
      Throws:
      IOException - if any IO error occurs

    • getProtocolSignature

      ProtocolSignature getProtocolSignature(String protocol, long clientVersion, int clientMethodsHash) throws IOException
      Return protocol version corresponding to protocol interface.
      Parameters:
      protocol - The classname of the protocol interface
      clientVersion - The version of the protocol that the client speaks
      clientMethodsHash - the hashcode of client protocol methods
      Returns:
      the server protocol signature containing its version and a list of its supported methods
      Throws:
      IOException - raised on errors performing I/O.
      See Also: