WARNING: Creating index file failed at disconode-dr-40: {badrpc,
                                                         {'EXIT',
                                                          {{badmatch,
                                                            {error,enoent}},
                                                           [{shuffle,
                                                             process_task,3},
                                                            {shuffle,
                                                             '-merged_index/3-fun-0-',
                                                             4},
                                                            {lists,foldl,3},
                                                            {shuffle,
                                                             merged_index,3},
                                                            {shuffle,
                                                             combine_tasks_node,
                                                             4},
                                                            {rpc,
                                                             '-handle_call_call/6-fun-0-',
                                                             5}]}}} (retrying)