nginx reload issues

[oowl]

Hi. I read ngx_lua_ipc code, I have a question want to ask.
if nginx exec reload, some old worker waiting exist request end. At this time, the new worker and old worker try to receive data from the same pipe, So we don't know how to dispatch data from these workers? Maybe this is a small problem, I can not see any code trying to solve this problem. Is there anything wrong with what I understand?