When running NNBased-Recommender, specifying --mixer skip_mixer will failed to MIX.
W0203 18:02:52.974720 21170 push_mixer.cpp:296] unsupported method (get_pull_argument_impl) : mix failed
Some mixables which are used in NNBased-Recommender do not support get_pull_argument, push and pull.
This also applies for jubaanomaly using light_lof.
weight_manager (recommender & anomaly) and sparse_matrix_storage (recommender) both don't override methods needed for push/pull mixer, although they're in the mixable_holder.
In the meeting on 2014-02-10, we asked @beam2d to list possible solutions.
I think this problem is now resolved by the refactoring done in core/server separation.