title: Package org.apache.hadoop.ipc.protobuf empty
body: <p>I just get the last stable Hadoop version (2.4) and followed <a href="https://wiki.apache.org/hadoop/EclipseEnvironment" rel="noreferrer">this</a> instruction to import it into Eclipse.</p>
  
  <p>However, I've having several build errors of <code>cannot be resolved to a type</code> in the test src folder. As an example:</p>
  
  <pre><code>import org.apache.hadoop.ipc.protobuf.TestProtos.EchoRequestProto;
  import org.apache.hadoop.ipc.protobuf.TestProtos.EchoResponseProto;
  import org.apache.hadoop.ipc.protobuf.TestProtos.EmptyRequestProto;
  import org.apache.hadoop.ipc.protobuf.TestProtos.EmptyResponseProto;
  import org.apache.hadoop.ipc.protobuf.TestRpcServiceProtos.TestProtobufRpcProto;
  import org.apache.hadoop.ipc.protobuf.TestRpcServiceProtos.TestProtobufRpc2Proto;
  </code></pre>
  
  <p>Eclipse cannot find any of these classes, simply because <strong>org.apache.hadoop.ipc.protobuf</strong> package is empty. Am I doing something wrong? Missing some configuration step?</p>