

@classmethod
def validate(cls, mapper_spec):
    'Validates mapper specification.\n\n    Output writer parameters are expected to be passed as "output_writer"\n    subdictionary of mapper_spec.params. To be compatible with previous\n    API output writer is advised to check mapper_spec.params and issue\n    a warning if "output_writer" subdicationary is not present.\n    _get_params helper method can be used to simplify implementation.\n\n    Args:\n      mapper_spec: an instance of model.MapperSpec to validate.\n    '
    raise NotImplementedError(('validate() not implemented in %s' % mapper_spec))

dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/output_writers.py OutputWriter.validate/VarMisuse@23/207 `cls`->`mapper_spec`