Package org.apache.hadoop.ipc

Annotation Interface ProtocolInfo

@Retention(RUNTIME) public @interface ProtocolInfo
The protocol name that is used when a client and server connect. By default the class name of the protocol interface is the protocol name. Why override the default name (i.e. the class name)? One use case overriding the default name (i.e. the class name) is when there are multiple implementations of the same protocol, each with say a different version/serialization. In Hadoop this is used to allow multiple server and client adapters for different versions of the same protocol service.

  • Required Element Summary

    Required Elements
    Modifier and Type
    Required Element
    Description
    String
    protocolName
     

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    long
    protocolVersion
     

  • Element Details

    • protocolName

      String protocolName

    • protocolVersion

      long protocolVersion
      Default:
      -1L