Reload of NGinX doesnt kill some of the older worker processes

[shivramg94]

I am facing an issue where once I issued a reload to the NGinX binary, few
of the older worker processes are not dying. They still remain orphaned. 

This is the configuration before issuing a reload :

[poduser at ucfc2z3a-1582-lb8-nginx1 logs]$ ps -ef | grep nginx
poduser  12540 22030  0 06:39 ?        00:00:00 nginx: worker process       
   
poduser  12541 22030  0 06:39 ?        00:00:00 nginx: worker process       
   
poduser  12762 11601  0 06:41 pts/0    00:00:00 grep nginx
poduser  22030     1  1 May12 ?        00:49:01 nginx: master process
/u01/app/Oracle_Nginx/sbin/nginx
poduser  23528 22030  0 May12 ?        00:00:22 nginx: worker process       
   
poduser  24950 22030  0 May12 ?        00:00:22 nginx: worker process 

Configuration after issuing a relaod

[poduser at ucfc2z3a-1582-lb8-nginx1 logs]$ ps -ef | grep nginx
poduser  13280 22030  2 06:45 ?        00:00:00 nginx: worker process       
   
poduser  13281 22030  2 06:45 ?        00:00:00 nginx: worker process       
   
poduser  13323 11601  0 06:45 pts/0    00:00:00 grep nginx
poduser  22030     1  1 May12 ?        00:49:02 nginx: master process
/u01/app/Oracle_Nginx/sbin/nginx
poduser  23528 22030  0 May12 ?        00:00:22 nginx: worker process       
   
poduser  24950 22030  0 May12 ?        00:00:22 nginx: worker process     

If you notice, there are two worker processes orphaned with PID's 23528 and
24950. Could someone please explain the cause for this, as to why few of the
worker processes are orphaned?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,274213,274213#msg-274213