Why does Nginx log same request two times?

[cpriest]

Was it ever determined whether this was an issue with the logger or with double-connections?  I'm getting double-log entries while using nginx as a load balancer in front of 3 other servers.  For a double-log entry on nginx side, there are two individual log entries on the target servers.

Any idea if my issue is related to this one?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,26189,26936#msg-26936