22ccc43670dac93eb7fe81520a84cf3979d05693,rllib/agents/dqn/dqn.py,,validate_config_and_setup_param_noise,#Any#,152

Before Change

    Rewrites rollout_fragment_length to take into account n_step truncation.
    
    // PyTorch check.
    if config["use_pytorch"]:
        raise ValueError("DQN does not support PyTorch yet! Use tf instead.")

    // TODO(sven): Remove at some point.
    //  Backward compatibility of epsilon-exploration config AND beta-annealing
    // fraction settings (both based on schedule_max_timesteps, which is
    // deprecated).
    schedule_max_timesteps = None
    if config.get("schedule_max_timesteps", DEPRECATED_VALUE) != \
            DEPRECATED_VALUE:
        deprecation_warning(

After Change

    //  Backward compatibility of epsilon-exploration config AND beta-annealing
    // fraction settings (both based on schedule_max_timesteps, which is
    // deprecated).
    if config.get("grad_norm_clipping", DEPRECATED_VALUE) != DEPRECATED_VALUE:
        deprecation_warning("grad_norm_clipping", "grad_clip")
        config["grad_clip"] = config.pop("grad_norm_clipping")

    schedule_max_timesteps = None
    if config.get("schedule_max_timesteps", DEPRECATED_VALUE) != \
            DEPRECATED_VALUE:
        deprecation_warning(

Instances