object
method bigblock_size : int
method custom : string -> string
method enhanced_mapping : int
method input_dir : string
method job_id : string
method log_dir : string
method map_tasks : int
method merge_limit : int
method name : string
method output_dir : string
method partitions : int
method split_limit : int
method task_files : string list
method work_dir : string
end
