@Override // DatanodeProtocol public DatanodeRegistration registerDatanode(DatanodeRegistration nodeReg) throws IOException { verifyVersion(nodeReg.getVersion()); namesystem.registerDatanode(nodeReg); return nodeReg; }
@Override // NamenodeProtocol public NamenodeRegistration register(NamenodeRegistration registration) throws IOException { verifyVersion(registration.getVersion()); NamenodeRegistration myRegistration = nn.setRegistration(); namesystem.registerBackupNode(registration, myRegistration); return myRegistration; }
/** * Verify request. * * <p>Verifies correctness of the datanode version, registration ID, and if the datanode does not * need to be shutdown. * * @param nodeReg data node registration * @throws IOException */ void verifyRequest(NodeRegistration nodeReg) throws IOException { verifyVersion(nodeReg.getVersion()); if (!namesystem.getRegistrationID().equals(nodeReg.getRegistrationID())) { LOG.warn( "Invalid registrationID - expected: " + namesystem.getRegistrationID() + " received: " + nodeReg.getRegistrationID()); throw new UnregisteredNodeException(nodeReg); } }